.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-2xl);
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    transition: all var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.logo svg {
    color: var(--primary-600);
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    font-size: var(--font-size-base);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--gradient-primary);
    transition: transform var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
    background: var(--primary-50);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.translate-link {
    color: #14b8a6;
    font-weight: 600;
}

.translate-link:hover,
.translate-link.active {
    color: #0d9488;
    background: rgba(20, 184, 166, 0.1);
}

.translate-link::after {
    background: #14b8a6;
}

@media (max-width: 768px) {
    .header-content {
        justify-content: space-between;
        gap: var(--spacing-md);
        padding: var(--spacing-md) 0;
    }

    .logo-text {
        font-size: var(--font-size-xl);
    }

    .nav {
        gap: var(--spacing-xs);
    }

    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs);
    }
}

.header-auth {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-user {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #555;
    font-size: 0.9rem;
}

.auth-user span {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-logout-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    background: none;
    border: 1px solid #ddd;
    cursor: pointer;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    color: #555;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.auth-logout-btn:hover {
    background: #f5f5f5;
    border-color: #ccc;
}

.auth-login-link {
    padding: 0.4rem 1rem;
    background: #3f51b5;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.auth-login-link:hover {
    background: #303f9f;
}.main-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--spacing-3xl) 0;
}

.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer p {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin: 0;
}.card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card-glass {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-clickable {
    cursor: pointer;
}

.card-clickable:active {
    transform: translateY(-2px);
}.home-page {
    width: 100%;
}

.hero {
    text-align: center;
    padding: var(--spacing-3xl) 0;
    margin-bottom: var(--spacing-3xl);
}

.hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    color: white;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
}

.features {
    margin-bottom: var(--spacing-3xl);
}

.features-title {
    text-align: center;
    color: white;
    margin-bottom: var(--spacing-2xl);
    font-size: var(--font-size-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.feature-link {
    text-decoration: none;
    animation: fadeIn 0.6s ease-out both;
}

.feature-link.disabled {
    pointer-events: none;
    opacity: 0.6;
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    position: relative;
}

.feature-icon {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    transition: transform var(--transition-base);
}

.feature-link:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.feature-description {
    color: var(--gray-600);
    font-size: var(--font-size-base);
    margin: 0;
}

.feature-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-accent);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.info-section {
    margin-top: var(--spacing-3xl);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.info-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.info-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.info-card p {
    color: var(--gray-600);
    margin: 0;
    font-size: var(--font-size-base);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-xl);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn:not(:disabled):active {
    transform: translateY(0);
}

/* Sizes */
.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    gap: var(--spacing-xs);
}

.btn-md {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    gap: var(--spacing-sm);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    gap: var(--spacing-md);
}

/* Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:not(:disabled):hover {
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:not(:disabled):hover {
    background: var(--gray-300);
}

.btn-outline {
    background: transparent;
    color: var(--primary-600);
    border: 2px solid var(--primary-600);
}

.btn-outline:not(:disabled):hover {
    background: var(--primary-50);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-700);
}

.btn-ghost:not(:disabled):hover {
    background: var(--gray-100);
}

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

.btn-danger:not(:disabled):hover {
    background: #dc2626;
}

/* Full Width */
.btn-full-width {
    width: 100%;
}

/* Loading State */
.btn-loading {
    pointer-events: none;
}

.btn-spinner {
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* Icon */
.btn-content {
    display: flex;
    align-items: center;
    gap: inherit;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon svg {
    width: 1.2em;
    height: 1.2em;
}.file-upload {
    width: 100%;
}

.upload-zone {
    border: 3px dashed var(--gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    background: white;
    transition: all var(--transition-base);
    cursor: pointer;
}

.upload-zone:hover {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

.upload-zone.dragging {
    border-color: var(--primary-600);
    background: var(--primary-100);
    transform: scale(1.02);
}

.upload-icon {
    color: var(--primary-500);
    margin-bottom: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

.upload-zone h3 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xl);
}

.upload-zone p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
}

.upload-hint {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-top: var(--spacing-md);
}

.upload-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    color: var(--error);
    font-size: var(--font-size-sm);
    animation: fadeIn 0.3s ease-out;
}

.file-list {
    margin-top: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.file-list h4 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
    animation: slideIn 0.3s ease-out;
}

.file-item:hover {
    background: var(--gray-50);
    border-color: var(--primary-300);
}

.file-icon {
    color: var(--error);
    flex-shrink: 0;
}

.file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.file-name {
    color: var(--gray-800);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

.file-remove {
    background: transparent;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-remove:hover {
    background: var(--error);
    color: white;
}

@media (max-width: 768px) {
    .upload-zone {
        padding: var(--spacing-xl);
    }

    .upload-icon {
        width: 36px;
        height: 36px;
    }

    .upload-zone h3 {
        font-size: var(--font-size-lg);
    }
}.progress-container {
    width: 100%;
    margin: var(--spacing-lg) 0;
    font-family: var(--font-family);
}

.progress-bar-bg {
    width: 100%;
    height: 12px;
    background-color: var(--gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--gray-200);
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease-out;
    position: relative;
}

.progress-bar-fill.translating {
    background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 50%, #3b82f6 100%);
    background-size: 200% 100%;
    animation: translatingAnimation 2s linear infinite;
}

.progress-bar-fill.completed {
    background: #10b981;
    /* green */
}

.progress-bar-fill.failed {
    background: #ef4444;
    /* red */
}

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

    100% {
        background-position: -100% 0;
    }
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.progress-stage {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.progress-percent {
    color: var(--gray-500);
}.task-progress-panel {
    margin-top: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.task-actions {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.success-message {
    color: var(--success-color, #10b981);
    font-weight: 600;
    margin: 0;
}

.error-message {
    color: var(--danger-color, #ef4444);
    font-weight: 500;
    margin: 0;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal, 1000);
    animation: fadeIn var(--transition-fast) ease-out;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow-xl);
    position: relative;
    padding: var(--spacing-xl);
    animation: slideUp var(--transition-fast) ease-out;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.modal-icon {
    width: ৪৮px;
    /* Typo from me, wait! I will correct in next file rewrite or fix now. Let's fix now. */
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon.destructive {
    background-color: #fef2f2;
    color: #ef4444;
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.modal-body {
    text-align: center;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.modal-footer {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.modal-footer .btn {
    min-width: 120px;
}

.btn.btn-destructive {
    background: #ef4444;
    color: white;
}

.btn.btn-destructive:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(239, 68, 68, 0.2);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}.conversion-history {
    margin-top: var(--spacing-2xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-200);
}

.conversion-history.empty {
    text-align: center;
    color: var(--gray-500);
    padding: var(--spacing-xl);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.history-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.refresh-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.refresh-btn:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.refresh-btn .spinning {
    animation: spin 1s linear infinite;
}

.table-responsive {
    overflow-x: auto;
}

.history-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-sm);
}

.history-table th,
.history-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.history-table th {
    font-weight: 600;
    color: var(--gray-600);
    background: var(--gray-50);
}

.history-table tbody tr:hover {
    background: var(--gray-50);
}

.filename-cell {
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.date-cell,
.size-cell {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
}

.actions-cell {
    display: flex;
    gap: var(--spacing-xs);
}

.actions-cell .delete-btn:hover {
    background: #fef2f2;
    color: #ef4444;
    border-color: #fca5a5;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.status-badge .capitalize {
    text-transform: capitalize;
}

.status-completed {
    background: #ecfdf5;
    color: #10b981;
}

.status-failed {
    background: #fef2f2;
    color: #ef4444;
}

.status-pending,
.status-processing {
    background: #eff6ff;
    color: #3b82f6;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
}

.page-info {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}.pdf-viewer-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.pdf-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray-500);
    gap: 1rem;
}

.spinner {
    animation: spin 1s linear infinite;
    width: 32px;
    height: 32px;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.pdf-document-wrapper {
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    padding: 2rem;
    background: #525659;
    /* Standard PDF viewer background color */
}

.pdf-document {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.pdf-page canvas {
    display: block !important;
    max-width: 100%;
    height: auto !important;
}

.pdf-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: white;
    border-top: 1px solid var(--gray-200);
    z-index: 10;
}

.pdf-pagination,
.pdf-zoom {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gray-100);
    padding: 0.25rem;
    border-radius: 6px;
}

.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: white;
    border-radius: 4px;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.control-btn:hover:not(:disabled) {
    background: var(--primary-50);
    color: var(--primary-600);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--gray-50);
}

.page-info,
.zoom-info {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-700);
    min-width: 60px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.zoom-info {
    min-width: 40px;
}/* Split PDF Page Styles - Top-Down Layout */

.split-workspace {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Top Section: Inputs */
.split-inputs-column {
    width: 100%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.inputs-header {
    margin-bottom: var(--spacing-md);
}

.inputs-header h3 {
    font-size: var(--font-size-lg);
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--gray-800);
}

.mode-selector {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--gray-100);
    padding: 4px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    max-width: 400px;
    /* Limit width of mode selector */
}

.mode-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-btn.active {
    background: white;
    color: var(--primary-600);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.input-hint {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    display: flex;
    align-items: center;
    margin: 0;
}

.range-list {
    margin-bottom: var(--spacing-lg);
}

.range-item {
    background: var(--gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-fast);
    max-width: 800px;
    /* Prevent it from being too wide */
}

.range-item:focus-within {
    border-color: var(--primary-300);
    box-shadow: 0 0 0 2px var(--primary-100);
}

.range-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xs);
}

.range-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
}

.range-input-wrapper .form-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    height: 38px;
}

.btn-icon-danger {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--radius-md);
    color: var(--gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon-danger:hover:not(:disabled) {
    border-color: var(--error);
    color: var(--error);
    background: rgba(239, 68, 68, 0.05);
}

.btn-icon-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--gray-100);
}

.inputs-actions {
    margin-bottom: var(--spacing-xl);
}

.main-action {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

/* Bottom Section: Viewer */
.split-viewer-column {
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 700px;
    /* Fixed larger height for viewer */
    margin-bottom: var(--spacing-xl);
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.viewer-header h3 {
    font-size: var(--font-size-lg);
    margin: 0;
    color: var(--gray-800);
}

.page-count {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    font-weight: 500;
}

.viewer-container {
    flex: 1;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-md);
    overflow: hidden;
}

/* Adjust PDFPageSelector styles when inside viewer */
.split-viewer-column .pdf-page-selector {
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.split-viewer-column .pages-container {
    flex: 1;
    overflow-y: auto;
    /* Custom scrollbar for inner container */
    scrollbar-width: thin;
    scrollbar-color: var(--gray-300) transparent;
}

.split-viewer-column .selector-header {
    display: none;
    /* Hide standard selector header as we only use it for viewing */
}.pdf-page-selector {
    width: 100%;
    margin: 1.5rem 0;
}

.selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.selection-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.selection-count {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
}

.selection-count strong {
    color: var(--primary-color);
    font-weight: 600;
}

.selection-range {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    font-family: 'Courier New', monospace;
}

.selection-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-text {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.btn-text:hover:not(:disabled) {
    background: rgba(139, 92, 246, 0.1);
}

.btn-text:disabled {
    color: rgba(255, 255, 255, 0.3);
    cursor: not-allowed;
}

.btn-text-small {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    text-decoration: underline;
    transition: opacity 0.2s ease;
}

.btn-text-small:hover {
    opacity: 0.8;
}

.range-hint {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    margin-bottom: 1rem;
    color: #60a5fa;
    font-size: 0.9rem;
}

.pages-container {
    min-height: 200px;
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.6);
}

.spinner {
    animation: spin 1s linear infinite;
    width: 32px;
    height: 32px;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    padding: 1rem 0;
}

.page-item {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.page-item:hover {
    transform: translateY(-4px);
    border-color: rgba(139, 92, 246, 0.5);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
}

.page-item.selected {
    border-color: var(--primary-color);
    background: rgba(139, 92, 246, 0.1);
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
}

.page-item.range-start {
    border-color: #60a5fa;
    background: rgba(59, 130, 246, 0.1);
}

.page-item.disabled {
    border-color: rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.2);
    cursor: default;
    opacity: 0.7;
}

.page-item.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: rgba(255, 255, 255, 0.05);
}

.page-item.disabled .page-preview {
    opacity: 0.5;
    position: relative;
}

.disabled-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    z-index: 10;
}

.disabled-overlay span {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 4px;
    backdrop-filter: blur(2px);
}

.page-preview {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.95);
    overflow: hidden;
}

.page-preview canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.page-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
}

.page-number {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.page-checkbox {
    display: flex;
    align-items: center;
}

.icon-checked {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
}

.icon-unchecked {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.3);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .pages-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 0.75rem;
    }

    .page-preview {
        height: 160px;
    }

    .selector-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .selection-actions {
        width: 100%;
        justify-content: flex-end;
    }
}.translation-history {
    margin-top: var(--spacing-2xl);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-200);
}

.translation-history.empty {
    text-align: center;
    color: var(--gray-500);
    padding: var(--spacing-xl);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.history-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
}

.refresh-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.refresh-btn:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.refresh-btn .spinning {
    animation: spin 1s linear infinite;
}

.table-responsive {
    overflow-x: auto;
}

.history-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--font-size-sm);
}

.history-table th,
.history-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.history-table th {
    font-weight: 600;
    color: var(--gray-600);
    background: var(--gray-50);
}

.history-table tbody tr:hover {
    background: var(--gray-50);
}

.filename-cell {
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.date-cell {
    color: var(--gray-500);
    font-size: var(--font-size-xs);
}

.actions-cell {
    display: flex;
    gap: var(--spacing-xs);
}

.actions-cell .delete-btn:hover {
    background: #fef2f2;
    color: #ef4444;
    border-color: #fca5a5;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.status-badge .capitalize {
    text-transform: capitalize;
}

.status-completed {
    background: #ecfdf5;
    color: #10b981;
}

.status-failed {
    background: #fef2f2;
    color: #ef4444;
}

.status-pending,
.status-translating {
    background: #eff6ff;
    color: #3b82f6;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
}

.page-info {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}.translate-page {
    padding: 2rem 1rem;
    min-height: calc(100vh - 64px - 100px); /* Adjust based on header and footer height */
}

.translate-container {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.options-section {
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
}

.language-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--surface-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.2s;
    outline: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.language-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.language-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.action-section {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.error-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    color: var(--danger-color);
    font-size: 0.95rem;
}

/* Status Section */
.status-section {
    width: 100%;
}

.task-card {
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.task-icon {
    color: var(--primary-color);
    padding: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 8px;
}

.task-details h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    word-break: break-all;
}

.task-details p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.task-status {
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.processing-state, .success-state, .failed-state {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.processing-state {
    color: var(--primary-color);
}

.success-state {
    color: var(--success-color);
}

.success-icon {
    color: var(--success-color);
}

.failed-state {
    color: var(--danger-color);
}

.error-icon {
    color: var(--danger-color);
}

.spin-icon {
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.task-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.convert-page .conversion-config {
    margin: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: rgba(255, 255, 255, 0.5);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.convert-page .file-info-box {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.convert-page .file-icon {
    color: var(--primary-color);
}

.convert-page .file-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.convert-page .file-name {
    font-weight: 500;
    color: var(--gray-800);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.convert-page .file-size {
    font-size: 13px;
    color: var(--gray-500);
}

.convert-page .target-select-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.convert-page .target-label {
    font-weight: 600;
    color: var(--gray-700);
}

.convert-page .target-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.convert-page .target-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    background: white;
    padding: 12px 16px;
    border-radius: 8px;
    border: 2px solid transparent;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
    flex: 1;
    min-width: 140px;
}

.convert-page .target-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.convert-page .target-option.selected {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.05), rgba(74, 144, 226, 0.1));
}

.convert-page .target-option input[type="radio"] {
    display: none;
}

.convert-page .option-content {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    color: var(--gray-700);
}

.convert-page .target-option.selected .option-content {
    color: var(--primary-color);
}.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 140px);
    width: 100%;
}

.login-card {
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card h2 {
    margin-bottom: 0.5rem;
    color: #333;
}

.login-card p {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.login-error {
    background: #ffebee;
    color: #c62828;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    border: 1px solid #ef9a9a;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-size: 0.9rem;
    font-weight: 500;
}

.login-form input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.login-form input:focus {
    outline: none;
    border-color: #3f51b5;
}

.login-button {
    width: 100%;
    padding: 0.8rem;
    background: #3f51b5;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 0.5rem;
}

.login-button:hover {
    background: #303f9f;
}

.login-button:disabled {
    background: #9fa8da;
    cursor: not-allowed;
}/* ===========================
   字体：优先调用系统内置 Inter，无需外部 CDN
   =========================== */

/* 400 Regular */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Inter Regular'), local('Inter-Regular'), local('Inter');
}

/* 500 Medium */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: local('Inter Medium'), local('Inter-Medium');
}

/* 600 SemiBold */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: local('Inter SemiBold'), local('Inter-SemiBold');
}

/* 700 Bold */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: local('Inter Bold'), local('Inter-Bold');
}

/* ===========================
   Import Shared Page Styles (must be first)
   =========================== */

/* ===========================
   CSS Reset & Base Styles
   =========================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===========================
   Design Tokens
   =========================== */

:root {
  /* Primary Colors - Modern Blue/Purple Gradient */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  /* Accent Colors - Purple */
  --accent-400: #a78bfa;
  --accent-500: #8b5cf6;
  --accent-600: #7c3aed;
  --accent-700: #6d28d9;

  /* Neutral Colors - Dark Theme */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ===========================
   Base Styles
   =========================== */

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--gradient-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===========================
   Typography
   =========================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--gray-600);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
}

/* ===========================
   Utility Classes
   =========================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.text-center {
  text-align: center;
}

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

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}

/* ===========================
   Glassmorphism Effect
   =========================== */

.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.glass-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

/* ===========================
   Animations
   =========================== */

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-in {
  animation: slideIn 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* ===========================
   Scrollbar Styling
   =========================== */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
  border-radius: var(--radius-full);
}

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

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-600);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===========================
   Focus States
   =========================== */

:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}