/* -------------------------------------------------------------
 * Premium Aesthetic CSS Design System
 * Tailored Harmonious HSL Palette based on reference screenshot
 * ------------------------------------------------------------- */

:root {
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Harmonious Color Palette */
    --color-bg-app: hsl(220, 20%, 97%); /* Light grayish blue background */
    --color-bg-card: hsl(0, 0%, 100%); /* Pure white card background */
    
    --color-text-primary: hsl(220, 40%, 12%); /* Very dark navy text */
    --color-text-secondary: hsl(218, 15%, 45%); /* Slate gray for captions */
    --color-border: hsl(220, 20%, 90%);
    
    /* Theme Accents */
    --color-primary: hsl(220, 75%, 35%); /* Deep premium blue */
    --color-primary-hover: hsl(220, 85%, 28%);
    --color-primary-light: hsl(220, 85%, 96%);
    
    --color-secondary: hsl(220, 10%, 93%);
    --color-secondary-hover: hsl(220, 10%, 87%);
    
    /* Signature and status colors */
    --color-success-bg: hsl(136, 40%, 93%); /* Soft pastel green */
    --color-success-text: hsl(136, 70%, 23%); /* Dark green */
    
    --color-warning-bg: hsl(45, 85%, 93%); /* Soft yellow-orange */
    --color-warning-text: hsl(35, 80%, 25%); /* Dark orange */
    
    --color-danger-bg: hsl(0, 80%, 95%); /* Soft light red */
    --color-danger-text: hsl(0, 75%, 35%); /* Crimson red */
    
    --color-empty-text: hsl(220, 10%, 75%);
    
    /* Layout Variables */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --shadow-soft: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 8px -1px rgba(15, 23, 42, 0.03);
    --shadow-premium: 0 12px 30px -4px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-app);
    color: var(--color-text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding: 24px;
    min-height: 100vh;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 1. Header Styles */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.header-left .header-icon {
    color: var(--color-primary);
    margin-right: 8px;
}

.header-left h1 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--color-text-primary);
}

.header-left .subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Toggle Switch */
.bypass-control {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--color-bg-card);
    padding: 8px 14px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.bypass-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: hsl(220, 10%, 80%);
    transition: .3s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
}

input:checked + .slider {
    background-color: var(--color-primary);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--color-primary);
}

input:checked + .slider:before {
    transform: translateX(16px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 700;
    padding: 10px 18px;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-soft);
}

.btn-primary {
    background-color: var(--color-danger-text); /* Matches red button from reference print */
    color: white;
}

.btn-primary:hover {
    background-color: hsl(0, 75%, 28%);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--color-bg-card);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.btn-secondary:hover {
    background-color: var(--color-secondary);
    color: var(--color-text-primary);
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--color-danger-bg);
    border-color: hsl(0, 80%, 90%);
    color: var(--color-danger-text);
}

.btn-danger:hover {
    background-color: var(--color-danger-text);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: var(--border-radius-sm);
}

/* 2. Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-radius: var(--border-radius-md);
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    box-shadow: var(--shadow-soft);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    border-color: hsl(45, 80%, 85%);
}

.hidden {
    display: none !important;
}

/* 3. Filters Card */
.filters-card {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    padding: 20px 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.8px;
    color: var(--color-text-secondary);
}

/* Custom Styled Select */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper select {
    width: 100%;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    padding: 10px 36px 10px 14px;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-md);
    appearance: none;
    cursor: pointer;
    transition: all 0.2s;
}

.select-wrapper select:hover {
    border-color: hsl(220, 30%, 75%);
}

.select-wrapper select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.select-arrow {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: transform 0.2s;
}

/* Search input */
.filter-search {
    grid-column: span 1.5;
}

@media (max-width: 900px) {
    .filter-search {
        grid-column: span 1;
    }
}

.search-input-wrapper {
    position: relative;
    width: 100%;
}

.search-input-wrapper input {
    width: 100%;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    padding: 10px 14px 10px 38px;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-md);
    transition: all 0.2s;
}

.search-input-wrapper input::placeholder {
    color: var(--color-empty-text);
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-empty-text);
    font-size: 14px;
}

/* Divisor control */
.divisor-control {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background: var(--color-bg-card);
    overflow: hidden;
    height: 40px;
}

.divisor-btn {
    background: var(--color-secondary);
    border: none;
    font-family: var(--font-family);
    font-size: 16px;
    font-weight: 800;
    color: var(--color-text-secondary);
    width: 32px;
    height: 100%;
    cursor: pointer;
    transition: background 0.2s;
}

.divisor-btn:hover {
    background: var(--color-secondary-hover);
    color: var(--color-text-primary);
}

.divisor-control input {
    border: none;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    width: 60px;
    height: 100%;
    appearance: textfield;
}

.divisor-control input:focus {
    outline: none;
}

.divisor-control input::-webkit-outer-spin-button,
.divisor-control input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* 4. Stats Badge Row */
.stats-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: var(--shadow-soft);
    border: 1px solid transparent;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.badge-blue {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-color: hsl(220, 75%, 90%);
}
.badge-blue .badge-dot { background-color: var(--color-primary); }

.badge-orange {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
    border-color: hsl(45, 80%, 88%);
}
.badge-orange .badge-dot { background-color: var(--color-warning-text); }

.badge-green {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
    border-color: hsl(136, 40%, 88%);
}
.badge-green .badge-dot { background-color: var(--color-success-text); }

.badge-purple {
    background-color: hsl(265, 80%, 96%);
    color: hsl(265, 80%, 45%);
    border-color: hsl(265, 70%, 90%);
}
.badge-purple .badge-dot { background-color: hsl(265, 80%, 45%); }

/* 5. Grid Grade Card */
.grid-card {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-premium);
    overflow: hidden;
}

.table-scroll-container {
    width: 100%;
    overflow-x: auto;
}

/* Custom Scrollbar for premium feel */
.table-scroll-container::-webkit-scrollbar {
    height: 8px;
    width: 8px;
}
.table-scroll-container::-webkit-scrollbar-track {
    background: var(--color-bg-app);
}
.table-scroll-container::-webkit-scrollbar-thumb {
    background: hsl(220, 15%, 80%);
    border-radius: 4px;
}
.table-scroll-container::-webkit-scrollbar-thumb:hover {
    background: hsl(220, 15%, 70%);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

/* Headers style (Matches reference photo navy blue) */
th {
    background-color: hsl(210, 50%, 18%); /* Slate Navy Header */
    color: white;
    font-weight: 700;
    padding: 14px 16px;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.8px;
    border-bottom: 2px solid hsl(210, 50%, 12%);
    white-space: nowrap;
    text-align: center; /* Center task headers and other columns by default */
}

th.col-num {
    width: 40px;
    min-width: 40px;
    max-width: 40px;
    text-align: center;
    position: sticky;
    left: 0;
    z-index: 12;
    background-color: hsl(210, 50%, 18%);
}

th.col-student {
    position: sticky;
    left: 40px;
    z-index: 12;
    background-color: hsl(210, 50%, 18%);
    width: 220px;
    min-width: 220px;
    max-width: 220px;
    text-align: left; /* Overrides default to keep student column left aligned */
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

th.col-grade {
    width: 80px;
    min-width: 80px;
    max-width: 80px;
    text-align: center;
    background-color: hsl(210, 50%, 14%); /* Slightly darker for the general grade column */
    white-space: normal;
    line-height: 1.2;
}

/* Row styles */
td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    color: var(--color-text-primary);
    vertical-align: middle;
    white-space: nowrap;
    text-align: center; /* Center task scores by default */
}

tr {
    transition: background-color 0.15s ease;
}

/* Hover micro-animation */
tr:hover {
    background-color: hsl(220, 20%, 95%);
}

td.col-num {
    position: sticky;
    left: 0;
    z-index: 9;
    background-color: var(--color-bg-card);
    width: 40px;
    min-width: 40px;
    max-width: 40px;
    text-align: center;
    color: var(--color-text-secondary);
    font-weight: 600;
}

/* Sticky Student Name Column */
td.col-student {
    position: sticky;
    left: 40px;
    background-color: var(--color-bg-card);
    z-index: 9;
    width: 220px;
    min-width: 220px;
    max-width: 220px;
    text-align: left; /* Keep student column left aligned */
    font-weight: 700;
    color: var(--color-text-primary);
    box-shadow: 2px 0 5px rgba(0,0,0,0.02);
    white-space: normal;
    line-height: 1.3;
}

/* Keep sticky column background matches row hover */
tr:hover td.col-num,
tr:hover td.col-student {
    background-color: hsl(220, 20%, 95%) !important;
}

/* Cell grade styles (Harmony block design) */
.cell-grade-block {
    text-align: center;
    font-weight: 700;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    display: block;
    width: 64px;
    margin: 0 auto;
}

.grade-high {
    background-color: var(--color-success-bg);
    color: var(--color-success-text);
}

.grade-medium {
    background-color: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.grade-low {
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
}

.grade-empty {
    color: var(--color-empty-text);
    text-align: center;
    font-weight: 500;
}

/* Data de Entrega e Duração nas células de nota */
.cell-submitted-at,
.cell-submitted-time,
.cell-duration {
    display: none !important;
}

/* Quando .show-details estiver ativo na tabela, exibe-os no site (mas não na impressão) */
.show-details .cell-submitted-at {
    font-size: 9.5px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    text-align: center;
    line-height: 1.2;
    font-weight: 500;
    display: block !important;
    cursor: help;
}

.show-details .cell-submitted-time {
    font-size: 8.5px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    text-align: center;
    line-height: 1.2;
    font-weight: 500;
    opacity: 0.8;
    display: block !important;
    cursor: help;
}

.show-details .cell-duration {
    font-size: 9.5px;
    color: var(--color-text-secondary);
    white-space: nowrap;
    text-align: center;
    line-height: 1.2;
    font-weight: 500;
    display: inline-flex !important;
    align-items: center;
    gap: 3px;
    cursor: help;
}

.badge-draft {
    font-size: 9px;
    padding: 2px 5px;
    border-radius: 4px;
    background-color: hsl(35, 100%, 90%);
    color: hsl(35, 90%, 35%);
    font-weight: 800;
    text-transform: uppercase;
    border: 1px solid hsl(35, 80%, 80%);
    display: inline-block;
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* Nota Geral special cell */
td.col-grade {
    text-align: center;
    font-size: 15px;
    font-weight: 800;
    width: 80px;
    min-width: 80px;
    max-width: 80px;
}

td.col-grade.grade-text-high {
    color: var(--color-success-text);
}
td.col-grade.grade-text-medium {
    color: var(--color-warning-text);
}
td.col-grade.grade-text-low {
    color: var(--color-danger-text);
}

/* Table Empty and Loader states */
.table-empty {
    text-align: center;
    padding: 60px !important;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.empty-icon {
    font-size: 32px;
    color: var(--color-empty-text);
    margin-bottom: 12px;
}

/* 6. Upload drawer panel (expandable at bottom) */
.upload-drawer {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-premium);
    overflow: hidden;
    margin-top: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drawer-header {
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: var(--color-primary-light);
    color: var(--color-primary);
    transition: background 0.2s;
}

.drawer-header:hover {
    background: hsl(220, 85%, 93%);
}

.drawer-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
}

.drawer-toggle i {
    transition: transform 0.3s;
}

.drawer-toggle.expanded i {
    transform: rotate(180deg);
}

.drawer-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    border-top: 1px solid var(--color-border);
    transition: max-height 0.3s ease, opacity 0.3s ease;
    max-height: 1000px;
    opacity: 1;
}

.drawer-content.collapsed {
    max-height: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    border-top: none;
}

/* Upload Dropzone */
.upload-zone {
    border: 2px dashed hsl(220, 25%, 80%);
    border-radius: var(--border-radius-lg);
    padding: 40px 20px;
    text-align: center;
    background-color: hsl(220, 20%, 99%);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.upload-zone:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.upload-icon {
    font-size: 42px;
    color: hsl(220, 25%, 70%);
    margin-bottom: 8px;
    transition: color 0.2s;
}

.upload-zone:hover .upload-icon {
    color: var(--color-primary);
}

.upload-zone h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.upload-zone p {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.hidden-input {
    display: none;
}

/* Upload file list & status */
.upload-status {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 16px;
    background-color: var(--color-bg-app);
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.status-header h4 {
    font-size: 14px;
    font-weight: 700;
}

.progress-bar-container {
    height: 6px;
    width: 100%;
    background-color: var(--color-secondary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--color-primary);
    transition: width 0.3s;
}

.file-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    font-size: 12px;
}

.file-name {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.signature-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 10px;
}

.upload-footer {
    display: flex;
    justify-content: flex-end;
}

/* 7. PDF Printing Layout System */
.print-header {
    display: none;
}

@media print {
    @page {
        size: portrait;
        margin: 3mm 5mm; /* Spacious but compact margins */
    }

    body {
        background-color: white;
        color: black;
        padding: 0;
        margin: 0;
        font-size: 9.6px; /* More readable font size */
        line-height: 1.2;
        min-height: auto !important;
    }
    
    .app-container {
        max-width: 100%;
        padding: 0;
        margin: 0;
    }
    
    .no-print {
        display: none !important;
    }
    
    .cell-submitted-at,
    .cell-submitted-time,
    .cell-duration,
    .show-details .cell-submitted-at,
    .show-details .cell-submitted-time,
    .show-details .cell-duration {
        display: none !important;
    }
    
    .grid-card {
        border: none;
        box-shadow: none;
        padding: 0;
        margin: 0;
        overflow: visible !important; /* Ensure no overflow hidden clips the bottom corners */
    }

    .table-scroll-container {
        overflow: visible !important;
        max-height: none !important;
    }

    table {
        border: 1px solid black;
        font-size: 9.6px; /* Comfortable text size */
        width: auto !important;
        max-width: 100%;
        margin: 0 auto !important;
        line-height: 1.1;
    }

    tr {
        page-break-inside: avoid;
    }

    /* Force the last row's cells to have a black bottom border to collapse nicely with the table border and resolve corner gaps */
    tr:last-child td {
        border-bottom: 1px solid black !important;
    }

    th {
        background-color: white !important;
        color: black !important;
        border-bottom: 2px solid black !important;
        padding: 4.5px 3.5px !important;
        font-size: 9.6px !important;
    }

    th.col-num {
        position: static !important;
        background-color: white !important;
        box-shadow: none !important;
        width: 32px !important;
        min-width: 32px !important;
        max-width: 32px !important;
    }

    th.col-student {
        position: static !important;
        background-color: white !important;
        box-shadow: none !important;
        width: auto !important;
        min-width: 190px !important;
        max-width: none !important;
    }

    th.col-grade {
        width: 120px;
        min-width: 120px;
        max-width: 120px;
    }

    td {
        border-bottom: 1px solid black;
        padding: 3.2px 3px !important; /* Balanced padding for a professional, clean spreadsheet */
        font-weight: 500;
        font-size: 9.5px !important;
    }

    td.col-num {
        position: static !important;
        background-color: transparent !important;
        box-shadow: none !important;
        width: 32px !important;
        min-width: 32px !important;
        max-width: 32px !important;
    }

    td.col-student {
        position: static !important;
        background-color: transparent !important;
        box-shadow: none !important;
        width: auto !important;
        min-width: 190px !important;
        max-width: none !important;
    }

    /* Force Student Name and metadata */
    .student-info {
        display: block !important;
        line-height: 1.1 !important;
        text-align: left !important;
    }

    .student-name {
        font-size: 9.6px !important;
        font-weight: 700 !important;
        display: inline !important;
        white-space: nowrap !important; /* Keep student name on a single line */
    }

    .student-meta {
        display: inline !important;
        margin-left: 6px !important;
    }

    /* Hide RA on print as requested by the user to save space and avoid clutter */
    .student-ra {
        display: none !important;
    }

    .badge-transferido {
        font-size: 7.5px !important;
        padding: 1px 4px !important;
        display: inline !important;
        margin-left: 4px !important;
    }

    /* Keep grades visual context with clean spacing */
    .cell-grade-block {
        border: 1px solid #ccc;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        padding: 2.5px !important;
        font-size: 9.5px !important;
        width: 34px !important;
        margin: 0 auto !important;
        line-height: 1.1 !important;
    }

    .cell-grade-draft {
        display: none !important;
    }

    .print-header {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 8px;
        border-bottom: 1px solid black;
        padding-bottom: 5px;
    }

    .print-header-content {
        text-align: left;
    }

    .print-header h2 {
        font-size: 15px !important; /* Prominent premium title font size */
        font-weight: 800 !important;
        margin-bottom: 2px !important;
        color: #000 !important;
    }

    .print-metadata {
        font-size: 11px !important; /* Requested larger font size for class, bimester and subject details */
        color: #111 !important;
        font-weight: 700 !important;
        margin-top: 2px !important;
    }

    .print-header-qrcode {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        gap: 2px;
        margin-left: 15px;
    }

    .print-qrcode-img {
        width: 46px;
        height: 46px;
        object-fit: contain;
    }

    .print-qrcode-text {
        font-size: 7px;
        font-weight: 700;
        color: #222;
        white-space: nowrap;
    }
}

/* -------------------------------------------------------------
 * 8. Refinement Features (Landing Page, Dynamic Average & Col-Grade toggle)
 * ------------------------------------------------------------- */

/* Rule to dynamically hide the final grade column */
.grades-table:not(.show-final-grade) .col-grade {
    display: none !important;
}

/* Landing Page Layout */
#landing-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 160px);
    padding: 20px 0;
}

.landing-card {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-premium);
    padding: 40px;
    max-width: 650px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    animation: fadeIn 0.4s ease-out;
}

.landing-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.landing-icon {
    font-size: 36px;
    color: var(--color-primary);
}

.landing-card h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.landing-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.landing-dropzone {
    width: 100%;
    border: 2px dashed hsl(220, 25%, 80%);
    border-radius: var(--border-radius-lg);
    padding: 40px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: hsl(220, 20%, 99%);
}

.landing-dropzone:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.landing-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
    margin-top: 10px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 15px;
}

.landing-loading-state {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-primary-light);
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
}

.loading-icon {
    color: var(--color-primary);
}

/* Button Warning (Gold/Yellow style) */
.btn-warning {
    background-color: hsl(38, 92%, 50%); /* Gold color from warning status */
    color: hsl(220, 40%, 10%);
    border-color: hsl(38, 92%, 45%);
}

.btn-warning:hover {
    background-color: hsl(38, 92%, 43%);
    transform: translateY(-1px);
}

.invisible-label {
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 768px) {
    .invisible-label {
        display: none;
    }
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Premium Custom Error Modal CSS */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.45); /* Soft dim backdrop */
    backdrop-filter: blur(8px); /* Modern blur */
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Support scrolling on small viewports */
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.25s ease;
    overflow-y: auto; /* Enable scrollbar if modal content exceeds window height */
    padding: 40px 20px; /* Safe padding for scrolled area */
}

.modal-card {
    background-color: var(--color-bg-card);
    padding: 24px 22px;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 480px; /* Increased from 440px to reduce text layout height */
    text-align: center;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--color-border);
    animation: modalScaleIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin: auto; /* Vertically and horizontally center if space permits, scrollable otherwise */
}

@keyframes modalScaleIn {
    from {
        transform: scale(0.92);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-icon-wrapper {
    width: 56px;
    height: 56px;
    background-color: var(--color-danger-bg);
    color: var(--color-danger-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px auto;
    font-size: 24px;
    border: 1px solid hsl(0, 80%, 90%);
}

.modal-card h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}

.modal-card p,
.modal-card .modal-message {
    font-size: 13.5px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 18px;
    font-weight: 500;
    white-space: pre-wrap;
}

.btn-modal {
    width: 100%;
    padding: 12px;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--border-radius-md);
}

/* ==========================================
   CSS EXTRA: AUTHENTICATION & SUBSCRIPTION SCREEN (SAAS)
   ========================================== */

/* Login Overlay and background elements */
.login-screen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: radial-gradient(circle at 10% 20%, rgb(4, 11, 29) 0%, rgb(18, 27, 54) 90%);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    z-index: 10000;
    overflow-y: auto;
    padding: 40px 20px;
}

.glass-card {
    background: rgba(255, 255, 255, 0.03) !important;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3) !important;
}

.login-card {
    width: 100%;
    max-width: 680px;
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    color: #e2e8f0;
    animation: fadeIn 0.5s ease-out;
}

.login-title {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.login-subtitle {
    font-size: 15px;
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 35px;
}

.login-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    text-align: left;
    margin-bottom: 40px;
}

@media (max-width: 600px) {
    .login-features {
        grid-template-columns: 1fr;
    }
}

.feature-item {
    background: rgba(255, 255, 255, 0.02);
    padding: 20px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.feature-icon {
    font-size: 24px;
    color: #60a5fa;
    margin-top: 2px;
}

.feature-item h3 {
    font-size: 14px;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 6px;
}

.feature-item p {
    font-size: 12.5px;
    color: #94a3b8;
    line-height: 1.5;
}

.login-action-box {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 40px;
}

.login-action-box h2 {
    font-size: 18px;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 8px;
}

.login-action-box p {
    font-size: 13px;
    color: #94a3b8;
    margin-bottom: 24px;
}

.btn-google {
    background-color: #4285F4 !important;
    color: white !important;
    border: none !important;
    border-radius: 30px !important;
    padding: 14px 32px !important;
    font-size: 14px !important;
    font-weight: 700 !important;
    box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3) !important;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-google:hover {
    background-color: #357ae8 !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4) !important;
}

.login-faq {
    text-align: left;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 30px;
}

.login-faq h2 {
    font-size: 16px;
    font-weight: 700;
    color: #e2e8f0;
    margin-bottom: 20px;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 600px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

.faq-item h4 {
    font-size: 13.5px;
    color: #cbd5e1;
    margin-bottom: 6px;
    font-weight: 600;
}

.faq-item p {
    font-size: 12.5px;
    color: #94a3b8;
    line-height: 1.5;
}

/* Subscription page */
.subscription-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: radial-gradient(circle at 10% 20%, rgb(4, 11, 29) 0%, rgb(18, 27, 54) 90%);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    z-index: 10000;
    overflow-y: auto;
    padding: 40px 20px;
}

.subscription-card {
    width: 100%;
    max-width: 620px;
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    color: #e2e8f0;
    animation: fadeIn 0.4s ease-out;
}

.crown-icon-wrapper {
    width: 72px;
    height: 72px;
    background: rgba(250, 204, 21, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
    border: 1px solid rgba(250, 204, 21, 0.2);
}

.subscription-crown {
    font-size: 32px;
    color: #facc15;
}

.subscription-card h2 {
    font-size: 24px;
    font-weight: 800;
    color: #facc15;
    margin-bottom: 10px;
}

.sub-intro {
    font-size: 14.5px;
    color: #cbd5e1;
    margin-bottom: 30px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.plans-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

@media (max-width: 580px) {
    .plans-container {
        grid-template-columns: 1fr;
    }
}

.plan-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.plan-card.highlight {
    background: rgba(96, 165, 250, 0.03);
    border-color: rgba(96, 165, 250, 0.25);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.05);
}

.plan-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255,255,255,0.08);
    padding: 3px 8px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 20px;
    color: #cbd5e1;
}

.plan-card.highlight .plan-badge {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.plan-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 12px;
}

.plan-price {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.plan-price span {
    font-size: 12px;
    font-weight: 500;
    color: #94a3b8;
}

.plan-card p {
    font-size: 12px;
    color: #94a3b8;
    line-height: 1.5;
    margin-bottom: 25px;
    text-align: center;
    min-height: 36px;
}

.btn-plan {
    width: 100%;
    padding: 12px !important;
    border-radius: 30px !important;
    font-weight: 700 !important;
    font-size: 13px !important;
}

.payment-disclaimer {
    font-size: 12px;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-bottom: 30px;
}

.status-msg {
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 25px;
    font-size: 13px;
    font-weight: 600;
    animation: fadeIn 0.2s ease;
}

.status-msg.info {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.status-msg.error {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.subscription-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    font-size: 13px;
    color: #64748b;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    flex-wrap: wrap;
}

.subscription-footer strong {
    color: #60a5fa;
}

.divider {
    color: rgba(255, 255, 255, 0.1);
}

.btn-link {
    background: transparent !important;
    border: none !important;
    cursor: pointer;
    font-family: inherit;
    font-weight: 700;
    font-size: 13px;
    padding: 0 !important;
}

.btn-danger-link {
    color: #f87171 !important;
}

.btn-danger-link:hover {
    color: #fca5a5 !important;
    text-decoration: underline;
}

/* CPF Modal customizations */
#cpf-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: radial-gradient(circle at 50% 50%, rgb(15, 23, 42) 0%, rgb(8, 12, 24) 100%) !important;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    z-index: 10000;
    backdrop-filter: blur(20px);
    opacity: 1;
    overflow-y: auto;
    padding: 40px 20px;
}

#cpf-modal .glass-card {
    background: rgba(30, 41, 59, 0.45) !important;
    backdrop-filter: blur(24px) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7), 0 0 50px rgba(96, 165, 250, 0.05) !important;
    border-radius: 28px !important;
    padding: 48px 40px !important;
    max-width: 480px !important;
    width: 90% !important;
    text-align: center;
    color: #f1f5f9 !important;
    animation: modalScaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.blue-icon {
    background-color: rgba(59, 130, 246, 0.15) !important;
    color: #60a5fa !important;
    border: 1px solid rgba(59, 130, 246, 0.3) !important;
    width: 64px !important;
    height: 64px !important;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
    font-size: 28px !important;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

#cpf-modal h3 {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    display: block;
}

#cpf-modal p {
    font-size: 14px;
    color: #94a3b8 !important; /* Soft high-contrast text */
    line-height: 1.6;
    margin-bottom: 28px;
    font-weight: 500;
    display: block;
}

.form-group {
    text-align: left;
    margin-bottom: 24px;
    width: 100%;
}

.form-group label {
    display: block;
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    background: rgba(0, 0, 0, 0.45) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    color: #fff !important;
    padding: 14px 18px !important;
    border-radius: 14px !important;
    font-size: 16px !important;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.25s ease;
}

.form-control:focus {
    outline: none;
    border-color: #60a5fa !important;
    background: rgba(0, 0, 0, 0.6) !important;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4) !important;
}

.error-text {
    color: #f87171;
    font-size: 11.5px;
    font-weight: 600;
    margin-top: 8px;
}

.modal-actions {
    display: flex;
    gap: 14px;
    width: 100%;
    margin-top: 32px;
}

.modal-actions button {
    flex: 1;
}

#cpf-modal .btn-primary {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6) !important;
    color: white !important;
    border: none !important;
    font-weight: 700 !important;
    padding: 14px !important;
    border-radius: 14px !important;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3) !important;
    transition: all 0.2s ease;
    cursor: pointer;
}

#cpf-modal .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.45) !important;
}

#cpf-modal .btn-secondary {
    background: rgba(255, 255, 255, 0.08) !important;
    color: #f1f5f9 !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    font-weight: 700 !important;
    padding: 14px !important;
    border-radius: 14px !important;
    transition: all 0.2s ease;
    cursor: pointer;
}

#cpf-modal .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    border-color: rgba(255, 255, 255, 0.25) !important;
}

/* Universal layout modifications for Premium dashboard */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 6px 12px;
    border-radius: 30px;
    box-shadow: var(--shadow-soft);
}

.user-avatar {
    font-size: 20px;
    color: var(--color-primary);
}

.user-details {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.user-email {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-primary);
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-status-badge {
    font-size: 9px;
    font-weight: 800;
    color: var(--color-success-text);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.btn-sm {
    padding: 8px 12px !important;
    font-size: 11px !important;
}

/* ─────────────────────────────────────────────────────────────
 * App Navigation and Tab-Based Layout
 * ───────────────────────────────────────────────────────────── */

.app-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 6px 16px;
    margin-bottom: 10px;
    gap: 1rem;
    flex-wrap: wrap;
    box-shadow: var(--shadow-soft);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 13.5px;
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: var(--color-secondary);
}

.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    border: 1px solid hsl(220, 75%, 90%);
}

#nav-btn-download {
    color: var(--color-danger-text);
    background: var(--color-danger-bg);
    border: 1px solid hsl(0, 80%, 90%);
}

#nav-btn-download:hover {
    background: hsl(0, 80%, 92%);
    color: var(--color-danger-text);
}

#nav-btn-download.active {
    background: var(--color-danger-text);
    color: white;
    border-color: var(--color-danger-text);
}

/* Account Details Page */
.account-container {
    max-width: 900px;
    margin: 10px auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.account-card {
    padding: 24px;
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
}

.account-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), hsl(220, 85%, 55%));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    color: white;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    border: 2px solid var(--color-border);
}

.account-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.account-info h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.account-info .email {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.account-status-badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.account-status-badge.active {
    background: var(--color-success-bg);
    border: 1px solid hsl(136, 40%, 88%);
    color: var(--color-success-text);
}

.account-status-badge.inactive {
    background: var(--color-danger-bg);
    border: 1px solid hsl(0, 80%, 90%);
    color: var(--color-danger-text);
}

.validity-card {
    padding: 24px;
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.validity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.validity-title {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    letter-spacing: 1px;
    font-weight: 800;
}

.validity-date {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-primary);
}

.validity-days {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    border: 1px solid hsl(220, 75%, 90%);
}

.validity-bar-bg {
    height: 10px;
    background: var(--color-secondary);
    border-radius: 5px;
    overflow: hidden;
}

.validity-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), hsl(136, 70%, 50%));
    border-radius: 5px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.plans-section-title {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 6px;
    text-align: center;
    color: var(--color-text-primary);
}

.plans-section-desc {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
}

.plans-container-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .plans-container-inner {
        grid-template-columns: 1fr;
    }
}

.plan-card-inner {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.plan-card-inner:hover {
    transform: translateY(-4px);
    border-color: hsl(220, 30%, 75%);
    box-shadow: var(--shadow-premium);
}

.plan-card-inner.popular {
    border-color: hsl(136, 40%, 80%);
    background: hsl(136, 40%, 99%);
}

.plan-card-inner.popular:hover {
    border-color: hsl(136, 70%, 50%);
    box-shadow: var(--shadow-premium);
}

.plan-badge-popular {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, hsl(136, 70%, 30%), hsl(136, 50%, 45%));
    color: white;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.plan-title-inner {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.plan-price-inner {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.plan-price-val {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.plan-price-period {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 600;
}

.plan-desc-inner {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-weight: 500;
}

.plan-features-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    list-style: none;
    font-size: 13px;
}

.plan-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
    font-weight: 600;
}

.plan-feature-item i {
    color: var(--color-success-text);
}

/* Purchase History */
.history-card {
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.history-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.history-header i {
    font-size: 20px;
    color: var(--color-primary);
}

.history-header h3 {
    font-size: 16px;
    font-weight: 800;
    color: var(--color-text-primary);
    margin: 0;
}

#history-loading, #history-empty {
    text-align: center;
    color: var(--color-text-secondary);
    padding: 30px 0;
    font-size: 14px;
    font-weight: 600;
}

#history-loading i {
    margin-right: 8px;
}

#history-empty i {
    display: block;
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

#history-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.history-table th {
    padding: 12px;
    font-weight: 700;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border);
    background-color: var(--color-secondary);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
    text-align: center;
}

.history-table td {
    padding: 14px 12px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-weight: 600;
    text-align: center;
}

.history-table tbody tr:hover td {
    background: var(--color-primary-light);
}

.payment-method-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    background: var(--color-primary-light);
    padding: 4px 10px;
    border-radius: 12px;
    border: 1px solid hsl(220, 75%, 90%);
    color: var(--color-primary);
    font-weight: 700;
}

.payment-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 12px;
}

.payment-status-badge.approved {
    background: var(--color-success-bg);
    border: 1px solid hsl(136, 40%, 88%);
    color: var(--color-success-text);
}

/* About Page */
.about-container {
    max-width: 900px;
    margin: 10px auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.about-header h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.about-header p {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.about-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow-soft);
}

.about-card:hover {
    transform: translateY(-3px);
    border-color: hsl(220, 30%, 75%);
    box-shadow: var(--shadow-premium);
}

.about-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-icon-wrapper i {
    font-size: 20px;
}

.about-card.analysis .about-icon-wrapper {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.about-card.print .about-icon-wrapper {
    background: hsl(265, 80%, 96%);
    color: hsl(265, 80%, 45%);
}

.about-card.speed .about-icon-wrapper {
    background: var(--color-warning-bg);
    color: var(--color-warning-text);
}

.about-card.privacy .about-icon-wrapper {
    background: var(--color-success-bg);
    color: var(--color-success-text);
}

.about-card h3 {
    font-size: 15px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.about-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-weight: 500;
}

.about-faq {
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
}

.about-faq h3 {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 16px;
    text-align: center;
    color: var(--color-text-primary);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.faq-question {
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: 14px;
}

.faq-answer {
    color: var(--color-text-secondary);
    font-size: 13px;
    line-height: 1.5;
    font-weight: 500;
}

/* -------------------------------------------------------------
 * 9. Requisitos e Compatibilidade CSS (Aba Sobre)
 * ------------------------------------------------------------- */
.about-compat-card {
    padding: 28px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.compat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-primary);
}

.compat-header i {
    font-size: 22px;
}

.compat-header h3 {
    font-size: 17px;
    font-weight: 800;
    color: var(--color-text-primary);
}

.compat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.compat-item {
    display: flex;
    gap: 14px;
    padding: 16px;
    border-radius: var(--border-radius-md);
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    transition: all 0.25s ease;
}

.compat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.compat-item i {
    font-size: 20px;
    margin-top: 2px;
}

.compat-item div {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.compat-item strong {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.compat-item span {
    font-size: 12px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    font-weight: 500;
}

/* Specific compat card variations */
.compat-item.compat-ok {
    border-color: hsl(136, 40%, 85%);
    background: hsl(136, 40%, 98%);
}
.compat-item.compat-ok i {
    color: var(--color-success-text);
}

.compat-item.compat-no {
    border-color: hsl(0, 80%, 90%);
    background: hsl(0, 80%, 99%);
}
.compat-item.compat-no i {
    color: var(--color-danger-text);
}

.compat-item.compat-soon {
    border-color: hsl(220, 75%, 90%);
    background: hsl(220, 85%, 99%);
}
.compat-item.compat-soon i {
    color: var(--color-primary);
}

.compat-item.compat-warn {
    border-color: hsl(45, 80%, 85%);
    background: hsl(45, 85%, 98%);
}
.compat-item.compat-warn i {
    color: var(--color-warning-text);
}

/* -------------------------------------------------------------
 * 10. Download Page CSS (Aba Download)
 * ------------------------------------------------------------- */
.download-container {
    max-width: 900px;
    margin: 10px auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.download-header {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 20px 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    position: relative;
    flex-wrap: wrap;
}

.download-header-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.download-header h2 {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-text-primary);
    margin: 0;
}

.download-header p {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin: 4px 0 0 0;
    font-weight: 500;
}

.download-active-badge {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-success-bg);
    color: var(--color-success-text);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    border: 1px solid hsl(136, 40%, 85%);
    text-transform: uppercase;
}

@media (max-width: 600px) {
    .download-active-badge {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
}

.download-main-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-premium);
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: relative;
}

.download-file-info {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.download-file-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: hsl(220, 85%, 96%);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    border: 1px solid hsl(220, 75%, 90%);
}

.download-file-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.download-file-details h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-text-primary);
    margin: 0;
}

.download-version {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--color-primary);
    background: var(--color-primary-light);
    align-self: flex-start;
    padding: 2px 8px;
    border-radius: 6px;
    border: 1px solid hsl(220, 75%, 90%);
}

.download-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.download-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-secondary);
    background: var(--color-secondary);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-download-main {
    background: linear-gradient(135deg, var(--color-primary), hsl(220, 85%, 50%));
    color: white;
    padding: 16px 32px;
    border-radius: var(--border-radius-md);
    font-weight: 800;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(15, 23, 42, 0.15);
    border: none;
    width: 100%;
}

.btn-download-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(15, 23, 42, 0.25);
    background: linear-gradient(135deg, hsl(220, 85%, 28%), hsl(220, 85%, 45%));
}

.download-requirements {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
    font-size: 12.5px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.download-requirements i {
    color: var(--color-primary);
    font-size: 15px;
}

.how-to-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.how-to-header {
    text-align: center;
    margin-bottom: 8px;
}

.how-to-header h3 {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.how-to-header p {
    font-size: 13.5px;
    color: var(--color-text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 20px;
}

@media (max-width: 900px) {
    .steps-container {
        grid-template-columns: 1fr;
    }
}

.step-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    box-shadow: var(--shadow-soft);
    position: relative;
    transition: all 0.25s ease;
}

.step-card:hover {
    transform: translateY(-2px);
    border-color: hsl(220, 30%, 75%);
    box-shadow: var(--shadow-premium);
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.15);
}

.step-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.step-content h4 {
    font-size: 14.5px;
    font-weight: 800;
    color: var(--color-text-primary);
    margin: 0;
}

.step-content p {
    font-size: 12.5px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
    font-weight: 500;
}

.step-gif-placeholder {
    height: 110px;
    background: var(--color-secondary);
    border: 1px dashed var(--color-border);
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 700;
    margin-top: 10px;
}

.step-gif-placeholder i {
    font-size: 20px;
    color: var(--color-empty-text);
}

.step-gif-container {
    position: relative;
    margin-top: 12px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-soft);
    cursor: zoom-in;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.step-gif-container:hover {
    transform: scale(1.025);
    box-shadow: var(--shadow-premium);
}

.step-gif {
    display: block;
    width: 100%;
    height: auto;
    max-height: 280px;
    object-fit: contain;
}

.step-gif-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(4px);
    color: white;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 4px;
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.2s ease;
}

.step-gif-container:hover .step-gif-badge {
    background: var(--color-primary);
}

/* Lightbox Premium Styles */
.lightbox-overlay {
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.lightbox-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 82vh;
    border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transform: scale(0.96);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lightbox-overlay.show .lightbox-content {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 28px;
    color: #f1f1f1;
    font-size: 42px;
    font-weight: 800;
    line-height: 1;
    transition: color 0.2s, transform 0.2s;
    cursor: pointer;
    user-select: none;
}

.lightbox-close:hover {
    color: #ef4444;
    transform: scale(1.1);
}

.lightbox-caption {
    margin: 15px auto 0 auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #f8fafc;
    font-size: 14px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: rgba(15, 23, 42, 0.6);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.account-cpf-span {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--color-text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 2px;
}

.account-cpf-span i {
    color: var(--color-primary);
}

.account-cpf-span strong {
    color: var(--color-text-primary);
}

/* -------------------------------------------------------------
 * 11. Footer / Rodapé (Assinatura)
 * ------------------------------------------------------------- */
.app-footer {
    margin-top: 40px;
    margin-bottom: 24px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 13.5px;
    font-weight: 500;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.footer-contact {
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-secondary);
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    font-weight: 600;
}

.footer-contact i {
    color: #38bdf8; /* Telegram blue color */
    font-size: 15px;
}

.footer-contact a {
    color: #0284c7;
    text-decoration: none;
    font-weight: 700;
    transition: color 0.2s;
}

.footer-contact a:hover {
    color: #0369a1;
    text-decoration: underline;
}

/* -------------------------------------------------------------
 * 12. Free Trial Restrictions & Warning Banner Styles
 * ------------------------------------------------------------- */
.trial-print-warning {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--color-warning-bg);
    border: 1px solid hsl(45, 80%, 88%);
    color: var(--color-warning-text);
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    font-size: 13px;
    font-weight: 700;
    margin-top: 16px;
    box-shadow: var(--shadow-soft);
}

.trial-print-warning i {
    font-size: 16px;
}

.account-status-badge.active.trial {
    background: var(--color-warning-bg) !important;
    border: 1px solid hsl(45, 80%, 88%) !important;
    color: var(--color-warning-text) !important;
}

.user-status-badge.active-pro.trial-header-badge {
    background-color: var(--color-warning-bg) !important;
    color: var(--color-warning-text) !important;
    border: 1px solid hsl(45, 80%, 85%) !important;
}

@media print {
    .is-trial-account tbody tr:nth-child(n+11) {
        display: none !important;
    }
    
    .trial-print-warning:not(.hidden) {
        display: flex !important;
        border: 1px solid black !important;
        color: black !important;
        background: white !important;
        margin-top: 15px !important;
        font-size: 9px !important;
        padding: 6px 10px !important;
        border-radius: 4px !important;
        box-shadow: none !important;
    }
}

/* Warning banner styling for unassigned classes */
.unassigned-class-warning {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: hsl(45, 100%, 96%);
    border: 1px solid hsl(45, 80%, 80%);
    border-left: 4px solid var(--color-warning-text, #eab308);
    border-radius: var(--border-radius-md, 8px);
    padding: 14px 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.unassigned-class-warning.hidden {
    display: none !important;
}
.unassigned-class-warning .warning-icon {
    color: var(--color-warning-text, #eab308);
    font-size: 18px;
    margin-top: 2px;
}
.unassigned-class-warning .warning-text-box strong {
    display: block;
    font-size: 13.5px;
    color: hsl(24, 80%, 30%);
    font-weight: 700;
    margin-bottom: 4px;
}
.unassigned-class-warning .warning-text-box p {
    margin: 0;
    font-size: 12.5px;
    color: hsl(24, 30%, 35%);
    line-height: 1.5;
    font-weight: 500;
}

/* Neutral grade colors (no format / no color) for unassigned classes */
.cell-grade-block.grade-neutral {
    background-color: var(--color-bg-sidebar, #f8fafc) !important;
    color: var(--color-text-secondary, #475569) !important;
    border: 1px solid var(--color-border, #e2e8f0) !important;
}

.grade-text-neutral {
    color: var(--color-text-primary) !important;
    font-weight: 600 !important;
}

/* Navigation Dropdown (JS-controlled via .open class) */
.nav-dropdown {
    position: relative;
    display: inline-block;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-card, #ffffff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 12px;
    padding: 8px;
    min-width: 180px;
    z-index: 1000;
    box-shadow: var(--shadow-premium, 0 10px 25px rgba(0,0,0,0.1));
    animation: dropdown-fade-in 0.15s ease;
}

@keyframes dropdown-fade-in {
    from { opacity: 0; transform: translateX(-50%) translateY(-6px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.nav-dropdown.open .nav-dropdown-menu {
    display: block;
}

.nav-dropdown.open .dropdown-toggle {
    color: var(--color-primary, #3b82f6);
}

.nav-dropdown-item {
    color: var(--color-text-secondary, #475569);
    font-size: 13px;
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-dropdown-item:hover {
    color: var(--color-primary, #3b82f6);
    background: var(--color-primary-light, #eff6ff);
}

.nav-dropdown-item i {
    width: 16px;
    text-align: center;
}

/* 13. Tooltip Premium CSS-Only */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::before,
[data-tooltip]::after {
    position: absolute;
    left: 50%;
    transform: translate(-50%, 8px);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    z-index: 99999;
}

[data-tooltip]::before {
    content: "";
    border-width: 6px 6px 0 6px;
    border-style: solid;
    border-color: #0f172a transparent transparent transparent;
    bottom: calc(100% + 4px);
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    bottom: calc(100% + 10px);
    background-color: #0f172a;
    color: #f8fafc;
    font-size: 11.5px;
    font-weight: 600;
    line-height: 1.45;
    padding: 8px 12px;
    border-radius: 8px;
    white-space: normal;
    width: 250px;
    text-align: center;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* =============================================================
   Social Media Cards Grid (Glassmorphism & Brand Glow Effects)
   ============================================================= */
.social-cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 24px auto 30px auto;
    width: 100%;
    max-width: 100%;
}

@media (max-width: 640px) {
    .social-cards-container {
        grid-template-columns: 1fr;
        gap: 12px;
        margin: 20px auto 24px auto;
    }
}

.social-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.social-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
    background: rgba(255, 255, 255, 0.05);
}

.social-icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.social-card:hover .social-icon-wrapper {
    transform: scale(1.1);
}

/* Instagram specific styles */
.instagram-card .social-icon-wrapper {
    background: rgba(236, 72, 153, 0.1);
    color: #f472b6;
    border: 1px solid rgba(236, 72, 153, 0.2);
}
.instagram-card:hover {
    box-shadow: 0 10px 25px rgba(236, 72, 153, 0.15);
    background: rgba(236, 72, 153, 0.05);
    border-color: rgba(236, 72, 153, 0.3);
}
.instagram-card:hover h4 {
    color: #f472b6;
}

/* Facebook specific styles */
.facebook-card .social-icon-wrapper {
    background: rgba(59, 130, 246, 0.1);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.2);
}
.facebook-card:hover {
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.15);
    background: rgba(59, 130, 246, 0.05);
    border-color: rgba(59, 130, 246, 0.3);
}
.facebook-card:hover h4 {
    color: #60a5fa;
}

/* WhatsApp specific styles */
.whatsapp-card .social-icon-wrapper {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.whatsapp-card:hover {
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.15);
    background: rgba(16, 185, 129, 0.05);
    border-color: rgba(16, 185, 129, 0.3);
}
.whatsapp-card:hover h4 {
    color: #34d399;
}

.social-card-text {
    text-align: left;
}

.social-card-text h4 {
    font-size: 13.5px;
    font-weight: 700;
    color: #f1f5f9;
    margin: 0;
    transition: color 0.2s ease;
}

.social-card-text p {
    font-size: 11.5px;
    color: #94a3b8;
    margin: 2px 0 0 0;
}

/* =============================================================
   Navigation Social Icons (Compact Circle Buttons)
   ============================================================= */
.nav-social-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-social-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.nav-social-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}

.nav-instagram {
    background: hsla(339, 81%, 96%, 1);
    color: hsl(339, 81%, 55%);
    border: 1px solid hsla(339, 81%, 92%, 1);
}
.nav-instagram:hover {
    background: hsl(339, 81%, 55%);
    color: white;
    border-color: hsl(339, 81%, 50%);
}

.nav-facebook {
    background: hsla(220, 85%, 96%, 1);
    color: hsl(220, 85%, 55%);
    border: 1px solid hsla(220, 85%, 92%, 1);
}
.nav-facebook:hover {
    background: hsl(220, 85%, 55%);
    color: white;
    border-color: hsl(220, 85%, 50%);
}

.nav-whatsapp {
    background: hsla(142, 70%, 96%, 1);
    color: hsl(142, 70%, 40%);
    border: 1px solid hsla(142, 70%, 92%, 1);
}
.nav-whatsapp:hover {
    background: hsl(142, 70%, 40%);
    color: white;
    border-color: hsl(142, 70%, 35%);
}

/* Tooltip offset specifically for nav bar items to avoid clipping */
.nav-social-links [data-tooltip]::after {
    width: 180px;
}

/* Prevent task columns from getting squished by setting a minimum width */
.grades-table th:not(.col-num):not(.col-student):not(.col-grade),
.grades-table td:not(.col-num):not(.col-student):not(.col-grade) {
    min-width: 55px;
    width: 55px;
}

.grades-table th:not(.col-num):not(.col-student):not(.col-grade) {
    white-space: normal;
    line-height: 1.1;
    font-size: 10px;
}