:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 8px;
    --spacing-lg: 1rem;
    --spacing-xl: 2rem;
}

.smart-exam-listing {
    background: var(--light-color);
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Compact Header */
.smart-header {
    background: #fff;
    padding: 5px0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--box-shadow);
}

.breadcrumb-smart {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    margin: 0;
    padding: 0;
    background: none;
    flex-wrap: wrap;
}

.breadcrumb-smart a {
    color: #000000;
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.breadcrumb-smart a:hover {
    background: var(--light-color);
    text-decoration: none;
}

.breadcrumb-smart .separator {
    color: var(--secondary-color);
    font-weight: 400;
}

.current-path {
    /* background: var(--primary-color); */
    color: #a31616;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Compact Quick Actions with Scroll */
.quick-actions {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    position: relative;
    margin-top: var(--spacing-lg);
}

.quick-actions-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: var(--spacing-md);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    position: relative;
}

.quick-actions-title .count-badge {
    background: var(--primary-color);
    color: #fff;
    padding: 2px var(--spacing-xs);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

.actions-container {
    position: relative;
    overflow: hidden;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    max-height: 200px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

.actions-grid::-webkit-scrollbar {
    width: 4px;
}

.actions-grid::-webkit-scrollbar-track {
    background: transparent;
}

.actions-grid::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}

.actions-grid::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

/* Scroll indicators */
.scroll-indicator {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.scroll-indicator:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.scroll-indicator.left {
    left: -16px;
}

.scroll-indicator.right {
    right: -16px;
}

.scroll-indicator.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Show more/less toggle */
.show-more-toggle {
    text-align: center;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.show-more-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.show-more-btn:hover {
    background: var(--light-color);
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-sm);
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
    font-size: 0.875rem;
}

.action-btn:hover {
    background: var(--primary-color);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-lg);
}

.action-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    box-shadow: var(--box-shadow-lg);
}

.action-icon {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.action-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-align: center;
    line-height: 1.2;
}

/* Compact Exam Type Groups */
.exam-type-group {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.exam-type-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #fff;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.exam-type-header:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
}

.exam-type-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.exam-type-title i {
    font-size: 1.25rem;
}

.exam-type-count {
    background: rgba(255,255,255,0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.exam-type-toggle {
    font-size: 1rem;
    transition: var(--transition);
}

.exam-type-toggle.collapsed {
    transform: rotate(180deg);
}

.exam-type-body {
    padding: var(--spacing-lg);
    background: var(--light-color);
}

/* Ultra Compact Exam Items - 3 Parts Layout */
.exam-item-smart {
    display: flex;
    align-items: stretch;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-sm);
    background: #fff;
    transition: var(--transition);
    position: relative;
    min-height: 60px; /* Fixed minimum height */
    align-items: center;
}

.exam-item-smart:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-1px);
    border-color: var(--primary-color);
}

.exam-item-smart::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--success-color);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

/* Part 1: Icon/Image */
.exam-icon-smart {
    width: 45px;
    height: 45px;
    background: var(--success-color);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: var(--spacing-sm);
}

.exam-icon-smart i {
    color: #fff;
    font-size: 26px;
}

/* Part 2: Content Info */
.exam-content-smart {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
    justify-content: space-between;
}

.exam-title-smart {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 2px;
    line-height: 1.2;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.exam-title-smart .badge {
    font-size: 0.5rem;
    padding: 1px var(--spacing-xs);
    border-radius: 9999px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 1px;
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-color), #f97316);
    color: #fff;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: #fff;
}

/* Compact Meta Info */
.exam-meta-smart {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: 13px;
    color: var(--secondary-color);
    margin-bottom: 2px;
}

.exam-meta-item-smart {
    display: flex;
    align-items: center;
    gap: 2px;
}

.exam-meta-item-smart i {
    font-size: 0.625rem;
    color: var(--primary-color);
}

/* Compact Teacher Info */
.exam-teacher-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.625rem;
}

.exam-teacher-avatar {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-color);
}

.exam-teacher-name {
    font-size: 0.625rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.exam-teacher-role {
    font-size: 0.5rem;
    color: var(--secondary-color);
    opacity: 0.8;
}

/* Part 3: Button */
.exam-button-smart {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 15px;
    height: fit-content;
    align-self: center;
}

.exam-button-smart:hover {
    background: var(--primary-hover);
    color: #fff;
    text-decoration: none;
    transform: scale(1.02);
}

.exam-button-smart[style*="background: #ffc107"]:hover {
    background: #f59e0b !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.font-weight-bold {
    font-weight: 700;
}

/* Compact Load More Button */
.btn-load-more {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: #fff;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-load-more:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-lg);
}

.btn-load-more:active {
    transform: translateY(0);
}

.btn-load-more i {
    transition: var(--transition);
}

.btn-load-more:hover i {
    transform: translateY(1px);
}

.btn-load-more.loading {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Empty State */
.no-exam-type {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--secondary-color);
}

.no-exam-type i {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-container {
        padding: 0 var(--spacing-sm);
    }

    .quick-actions {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .actions-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xs);
        max-height: 150px;
    }

    .action-btn {
        padding: var(--spacing-sm) var(--spacing-xs);
    }

    .action-icon {
        font-size: 1rem;
        margin-bottom: 2px;
    }

    .action-label {
        font-size: 0.625rem;
    }

    .scroll-indicator {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }

    .scroll-indicator.left {
        left: -14px;
    }

    .scroll-indicator.right {
        right: -14px;
    }

    /* Mobile Exam Item Optimization - Keep Compact Layout */
    .exam-item-smart {
        padding: var(--spacing-xs);
        min-height: 50px;
    }

    .exam-icon-smart {
        width: 35px;
        height: 35px;
        margin-right: var(--spacing-xs);
    }

    .exam-icon-smart i {
        font-size: 0.75rem;
    }

    .exam-title-smart {
        font-size: 0.625rem;
        margin-bottom: 1px;
    }

    .exam-title-smart .badge {
        font-size: 0.5rem;
        padding: 1px var(--spacing-xs);
    }

    .exam-meta-smart {
        font-size: 0.5rem;
        gap: var(--spacing-xs);
        margin-bottom: 1px;
    }

    .exam-meta-item-smart i {
        font-size: 0.5rem;
    }

    .exam-teacher-info {
        font-size: 0.5rem;
    }

    .exam-teacher-avatar {
        width: 12px;
        height: 12px;
    }

    .exam-teacher-name {
        font-size: 0.5rem;
    }

    .exam-teacher-role {
        font-size: 0.5rem;
    }

    .exam-button-smart {
        padding: var(--spacing-xs);
        font-size: 0.5rem;
    }

    .exam-type-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .exam-type-title {
        font-size: 1rem;
    }

    .exam-type-count {
        font-size: 0.625rem;
        padding: 2px var(--spacing-xs);
    }

    .exam-type-body {
        padding: var(--spacing-md);
    }

    .breadcrumb-smart {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
        max-height: 120px;
    }

    .scroll-indicator {
        width: 24px;
        height: 24px;
        font-size: 0.625rem;
    }

    .scroll-indicator.left {
        left: -12px;
    }

    .scroll-indicator.right {
        right: -12px;
    }

    /* Extra Small Mobile Optimization - Ultra Compact */
    .exam-item-smart {
        padding: 4px;
        min-height: 45px;
    }

    .exam-icon-smart {
        width: 35px;
        height: 35px;
        margin-right: 6px;
    }

    .exam-icon-smart i {
        font-size: 22px;
    }

    .exam-title-smart {
        font-size: 0.5rem;
        margin-bottom: 1px;
    }

    .exam-title-smart .badge {
        font-size: 0.5rem;
        padding: 1px 4px;
    }

    .exam-meta-smart {
        font-size: 0.5rem;
        gap: 4px;
        margin-bottom: 1px;
    }

    .exam-meta-item-smart i {
        font-size: 0.5rem;
    }

    .exam-teacher-info {
        font-size: 0.5rem;
    }

    .exam-teacher-avatar {
        width: 10px;
        height: 10px;
    }

    .exam-teacher-name {
        font-size: 0.5rem;
    }

    .exam-teacher-role {
        font-size: 0.5rem;
    }

    .exam-button-smart {
        padding: 4px 6px;
        font-size: 0.5rem;
    }

    .exam-type-title {
        font-size: 0.875rem;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .exam-title-smart {
        font-size: 15px;
    }

    .exam-meta-smart {
        font-size: 0.625rem;
    }

    .exam-button-smart {
        font-size: 13px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Loading Animation */
.loading-skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Smooth Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.exam-item-smart {
    animation: fadeInUp 0.3s ease forwards;
}

/* Touch-friendly improvements */
@media (max-width: 768px) {
    .exam-item-smart {
        /* Touch target minimum 44px */
        min-height: 44px;
        /* Better touch feedback */
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        /* Prevent text selection on touch */
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
        align-items: center;
    }

    .exam-button-smart {
        /* Touch target minimum 44px */
        min-height: 32px;
        min-width: 44px;
        /* Better touch feedback */
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }

    .action-btn {
        /* Touch target minimum 44px */
        min-height: 44px;
        /* Better touch feedback */
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }

    /* Improve scrolling on iOS */
    .actions-grid {
        -webkit-overflow-scrolling: touch;
    }

    /* Better focus states for accessibility */
    .exam-item-smart:focus,
    .exam-button-smart:focus,
    .action-btn:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
}