/* ============================================
   EDU DOCS - MODERN COLOR SCHEME
   ============================================ */

/* Variables */
:root {
    /* Modern Color Palette */
    --primary: #4361ee;      /* Vibrant blue */
    --primary-light: #4895ef;
    --primary-dark: #3a0ca3;
    --secondary: #7209b7;    /* Purple */
    --accent: #f72585;       /* Pink */
    --success: #4cc9f0;      /* Cyan */
    --warning: #f8961e;      /* Orange */
    --danger: #f94144;       /* Red */
    
    /* Neutral Colors */
    --light: #f8f9fa;
    --lighter: #ffffff;
    --gray: #adb5bd;
    --dark: #343a40;
    --darker: #212529;
    --text-light: #6c757d;
    --text-medium: #495057;
    
    /* Background Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-success: linear-gradient(135deg, var(--success) 0%, #4cc9f0 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent) 0%, #f72585 100%);
    --gradient-warning: linear-gradient(135deg, var(--warning) 0%, #f9c74f 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 12px 40px rgba(67, 97, 238, 0.25);
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-round: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.loading-spinner i {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner p {
    font-size: 1.2rem;
    font-weight: 500;
    color: white;
}

/* Header */
header {
    background: var(--lighter);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo i {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo h1 {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}

.tagline {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    font-weight: 500;
    position: relative;
}

.nav-link:hover {
    background: var(--light);
    color: var(--primary);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.cart-link {
    position: relative;
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-round);
    min-width: 20px;
    height: 20px;
    text-align: center;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--light);
    border-radius: var(--radius-md);
}

.user-avatar i {
    font-size: 2rem;
    color: var(--primary);
}

.user-info {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

#userName {
    font-weight: 600;
    color: var(--dark);
}

.btn-logout {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: color var(--transition-fast);
    padding: 0;
}

.btn-logout:hover {
    color: #d00000;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
}

/* Buttons */
.btn-primary, .btn-success, .btn-secondary, .btn-danger, .btn-outline {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all var(--transition-normal);
    text-decoration: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 15px rgba(76, 201, 240, 0.3);
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(76, 201, 240, 0.4);
}

.btn-success:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--light);
    color: var(--dark);
    border: 2px solid var(--gray);
}

.btn-secondary:hover {
    background: var(--gray);
    color: white;
    border-color: var(--gray);
}

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

.btn-danger:hover {
    background: #d00000;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* Sections */
.section {
    display: none;
    min-height: calc(100vh - 80px);
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--dark);
    font-size: 1.8rem;
}

.section-title i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Auth */
.auth-container {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 450px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-light);
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    z-index: 1;
}

.input-group input,
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background: var(--light);
    font-family: inherit;
}

.input-group textarea {
    padding: 1rem;
    min-height: 100px;
    resize: vertical;
}

.input-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
    background: white;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    font-size: 1rem;
    z-index: 2;
}

.password-toggle:hover {
    color: var(--primary);
}

.auth-divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
}

.auth-divider::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 45%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray));
}

.auth-divider::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    width: 45%;
    height: 1px;
    background: linear-gradient(90deg, var(--gray), transparent);
}

.auth-divider span {
    background: var(--lighter);
    padding: 0 1rem;
    color: var(--gray);
    font-size: 0.9rem;
}

.auth-links {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-links p {
    color: var(--text-light);
}

/* Store */
.hero-banner {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: 4rem;
    color: white;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: white;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.stat i {
    font-size: 1.5rem;
    color: var(--success);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image i {
    font-size: 8rem;
    opacity: 0.8;
}

/* Categories */
.categories-section {
    margin-bottom: 3rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: var(--lighter);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.category-card.active {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.category-card.active .category-icon i {
    color: white !important;
}

.category-card.active .category-count {
    color: rgba(255, 255, 255, 0.9);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.category-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.category-count {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Documents Section */
.documents-section {
    margin-top: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    min-width: 300px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
}

.search-box input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 3rem;
    border: 2px solid var(--light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background: var(--lighter);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.filter-select {
    padding: 0.8rem 1rem;
    border: 2px solid var(--light);
    border-radius: var(--radius-md);
    background: var(--lighter);
    color: var(--dark);
    font-size: 1rem;
    cursor: pointer;
    min-width: 200px;
    transition: all var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

/* Documents Grid */
.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.document-card {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--light);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.document-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.doc-image {
    height: 200px;
    background: linear-gradient(135deg, #4361ee20, #7209b720);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.doc-image i {
    font-size: 4rem;
    color: var(--primary);
    opacity: 0.8;
}

.doc-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-round);
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
}

.doc-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.doc-category {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.doc-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark);
    line-height: 1.3;
}

.doc-description {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.doc-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.doc-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.doc-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 1rem 0;
}

.doc-price small {
    display: block;
    font-size: 0.9rem;
    color: var(--gray);
    text-decoration: line-through;
    margin-top: 0.2rem;
}

.doc-actions {
    display: flex;
    gap: 0.8rem;
    margin-top: auto;
}

.doc-actions .btn-primary,
.doc-actions .btn-outline {
    flex: 1;
}

/* Cart */
.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.continue-shopping {
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.continue-shopping:hover {
    color: var(--primary-dark);
}

.cart-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.cart-items {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.empty-cart,
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-icon {
    font-size: 4rem;
    color: var(--gray);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-cart h3,
.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.empty-cart p,
.empty-state p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 80px 2fr 1fr 1fr;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--light);
}

.cart-item:last-child {
    border-bottom: none;
}

.item-image {
    width: 80px;
    height: 80px;
    background: var(--light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.item-image i {
    font-size: 2rem;
    color: var(--primary);
}

.item-details h4 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.item-author {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.item-price {
    color: var(--primary);
    font-weight: 600;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.quantity-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--gray);
    background: var(--lighter);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    transition: all var(--transition-fast);
}

.quantity-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.quantity-value {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
}

.item-total {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

.item-total strong {
    font-size: 1.2rem;
    color: var(--primary);
}

.remove-item {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 5px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-item:hover {
    background: rgba(249, 65, 68, 0.1);
}

.cart-summary {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    align-self: start;
    position: sticky;
    top: 6rem;
}

.cart-summary h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.summary-details {
    margin: 2rem 0;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--light);
    color: var(--text-medium);
}

.summary-row.total {
    border-bottom: none;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    padding-top: 1rem;
    border-top: 2px solid var(--light);
}

/* Payment Section */
.payment-container {
    background: var(--lighter);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-lg);
}

.payment-header {
    text-align: center;
    margin-bottom: 3rem;
}

.payment-subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.payment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.qr-display {
    text-align: center;
    margin-bottom: 2rem;
}

.qr-code {
    position: relative;
    width: 250px;
    height: 250px;
    margin: 0 auto 1rem;
    border: 2px dashed var(--primary);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: white;
}

#qrImage {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.qr-note {
    color: var(--text-light);
    font-size: 0.9rem;
}

.payment-details {
    background: var(--light);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.payment-details h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-medium);
}

.detail-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.detail-item .price {
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.payment-notice {
    background: linear-gradient(135deg, #4cc9f0 0%, #4361ee 100%);
    color: white;
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.payment-notice i {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.payment-notice p {
    margin-bottom: 0;
    line-height: 1.5;
}

.payment-notice strong {
    font-weight: 600;
}

/* Upload Area */
.upload-section {
    background: var(--lighter);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.upload-header {
    margin-bottom: 2rem;
}

.upload-header h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.upload-subtitle {
    color: var(--accent);
    font-weight: 600;
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

.upload-area {
    border: 3px dashed var(--primary);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(67, 97, 238, 0.05);
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: 2rem;
}

.upload-area:hover {
    background: rgba(67, 97, 238, 0.1);
    border-color: var(--secondary);
}

.upload-icon i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.upload-hint {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 1rem;
}

.file-preview {
    margin-bottom: 2rem;
    display: none;
}

.preview-container {
    position: relative;
    width: 200px;
    height: 150px;
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--light);
}

#previewImage {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-overlay {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.file-info {
    text-align: left;
}

#fileName {
    font-size: 1rem;
    color: var(--dark);
    margin-bottom: 0.3rem;
}

#fileSize {
    color: var(--text-light);
    font-size: 0.9rem;
}

.upload-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-bottom: 2rem;
}

.payment-instructions {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-top: 2rem;
}

.payment-instructions h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.payment-instructions ol {
    padding-left: 1.5rem;
    margin-top: 1rem;
}

.payment-instructions li {
    margin-bottom: 0.8rem;
    color: var(--text-medium);
    line-height: 1.5;
}

.payment-instructions strong {
    color: var(--primary);
    font-weight: 600;
}

/* My Documents */
.my-docs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light);
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    color: var(--text-medium);
}

.stat-item i {
    color: var(--primary);
    font-size: 1.2rem;
}

.stat-item strong {
    color: var(--primary);
    font-weight: 600;
}

#confirmedDocs {
    color: var(--success);
}

.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.8rem 1.5rem;
    background: var(--light);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-medium);
}

.filter-tab:hover {
    background: var(--primary);
    color: white;
}

.filter-tab.active {
    background: var(--gradient-primary);
    color: white;
}

/* My Documents Grid */
.my-docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.my-doc-card {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    border: 2px solid var(--light);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.my-doc-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.doc-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(67, 97, 238, 0.1);
    border-radius: var(--radius-md);
}

.doc-content {
    flex: 1;
    min-width: 0;
}

.doc-content h4 {
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-size: 1.1rem;
    line-height: 1.3;
}

.doc-description {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0.5rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.doc-meta {
    display: flex;
    gap: 1rem;
    margin: 0.8rem 0;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-light);
}

.doc-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.status-confirmed {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.status-pending {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    color: white;
}

.doc-info {
    margin-top: 0.8rem;
    font-size: 0.8rem;
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.doc-info small {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.doc-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-shrink: 0;
    min-width: 140px;
}

/* Admin Section */
.admin-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.admin-card {
    background: var(--lighter);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid var(--light);
    box-shadow: var(--shadow-sm);
}

.admin-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.admin-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.admin-card h3 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.admin-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Admin Toolbar */
.admin-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.admin-table-header {
    background: var(--light);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--dark);
}

.admin-document-item {
    background: var(--lighter);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    border: 1px solid var(--light);
    transition: all var(--transition-fast);
}

.admin-document-item:hover {
    background: white;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.doc-badge-small {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    margin-right: 5px;
    margin-top: 5px;
}

/* Form Checkbox */
.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-checkbox label {
    cursor: pointer;
    user-select: none;
    color: var(--text-medium);
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--light);
}

/* Preview Content */
.preview-content {
    padding: 1rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--light);
    flex-wrap: wrap;
    gap: 1rem;
}

.preview-category {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-medium);
}

.preview-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.preview-description {
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: var(--text-medium);
}

.preview-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-medium);
}

.detail-item i {
    color: var(--primary);
    font-size: 1.1rem;
}

.preview-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* Bill Details */
.bill-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 1rem 0;
}

.bill-info {
    background: var(--light);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.bill-info p {
    margin-bottom: 0.8rem;
    display: flex;
    justify-content: space-between;
    color: var(--text-medium);
}

.bill-info strong {
    min-width: 150px;
    color: var(--dark);
}

.bill-image {
    border: 2px solid var(--light);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    min-height: 300px;
}

.bill-image img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

/* Footer */
footer {
    background: var(--darker);
    color: white;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--success);
}

.footer-logo h3 {
    color: white;
    font-size: 1.5rem;
}

.footer-description {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-round);
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.bank-info p,
.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--gray);
}

.bank-info i,
.contact-info i {
    color: var(--success);
    width: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-note {
    font-size: 0.9rem;
    color: var(--gray);
    opacity: 0.8;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--dark);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 1001;
    max-width: 350px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.toast::before {
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1.2rem;
}

.toast.success::before {
    content: '✓';
    color: var(--success);
}

.toast.error::before {
    content: '✗';
    color: var(--danger);
}

.toast.warning::before {
    content: '⚠';
    color: var(--warning);
}

.toast.info::before {
    content: 'ℹ';
    color: var(--primary);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
    z-index: 1002;
    padding: 1rem;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--lighter);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: white;
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close-modal {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-round);
    transition: background-color var(--transition-fast);
}

.close-modal:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1.5rem 2rem;
    background: var(--light);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp 0.5s ease;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(67, 97, 238, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(67, 97, 238, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(67, 97, 238, 0);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* Print styles */
@media print {
    .navbar,
    .footer-container,
    .nav-menu,
    .btn-logout,
    .cart-link,
    .continue-shopping,
    .upload-actions,
    .doc-actions button,
    .modal {
        display: none !important;
    }
    
    .section {
        display: block !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 1.5rem;
    }
    
    .payment-content {
        gap: 2rem;
    }
}

@media (max-width: 1024px) {
    .payment-content,
    .cart-container {
        grid-template-columns: 1fr;
    }
    
    .bill-details {
        grid-template-columns: 1fr;
    }
    
    .admin-panel {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        width: 100%;
        flex-wrap: wrap;
        justify-content: center;
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero-banner {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters {
        flex-direction: column;
        width: 100%;
    }
    
    .search-box,
    .filter-select {
        width: 100%;
    }
    
    .documents-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .upload-actions {
        flex-direction: column;
    }
    
    .upload-actions button {
        width: 100%;
    }
    
    .my-docs-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-panel {
        grid-template-columns: 1fr;
    }
    
    .row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .preview-details {
        grid-template-columns: 1fr;
    }
    
    .preview-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1rem;
    }
    
    .item-image {
        margin: 0 auto;
    }
    
    .quantity-control {
        justify-content: center;
    }
    
    .item-total {
        align-items: center;
        text-align: center;
    }
    
    .my-doc-card {
        flex-direction: column;
        gap: 1rem;
    }
    
    .doc-actions {
        width: 100%;
        flex-direction: row;
        justify-content: flex-end;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .documents-grid {
        grid-template-columns: 1fr;
    }
    
    .auth-card {
        padding: 2rem 1.5rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .payment-container {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    
    .stat-item {
        width: 100%;
        justify-content: center;
    }
    
    .filter-tabs {
        width: 100%;
        justify-content: center;
    }
    
    .filter-tab {
        flex: 1;
        justify-content: center;
        min-width: 100px;
    }
    
    .modal-content {
        margin: 0.5rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer button {
        width: 100%;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.bg-light { background: var(--light); }
.bg-lighter { background: var(--lighter); }
.bg-primary { background: var(--primary); color: white; }
.bg-success { background: var(--success); color: white; }

.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-gray { color: var(--gray); }
.text-light { color: var(--text-light); }

.font-small { font-size: 0.9rem; }
.font-large { font-size: 1.1rem; }
.font-bold { font-weight: 600; }

.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light);
    border-radius: var(--radius-round);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-round);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Selection */
::selection {
    background: rgba(67, 97, 238, 0.2);
    color: var(--primary-dark);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Loading Spinner for buttons */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
    left: 50%;
    top: 50%;
    margin-left: -10px;
    margin-top: -10px;
}

/* Tooltip */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark);
    color: white;
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 0.5rem;
}

[data-tooltip]:hover::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--dark);
    margin-bottom: -5px;
}
/* Thêm vào cuối file style.css, trước } */

/* Thêm status mới */
.status-rejected {
    background: linear-gradient(135deg, #f94144 0%, #f72585 100%);
    color: white;
}

/* Style cho loại tài liệu video */
.doc-badge.video-badge {
    background: var(--danger) !important;
}

/* Style cho drive link */
.doc-badge.drive-badge {
    background: var(--primary) !important;
}