/* ============================================
   Jain Agama Search Engine - Premium Styles
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Colors - Dark Theme with Warm Accents */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #16161f;
    --bg-hover: #1f1f2e;

    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    --accent-primary: #e8a54b;
    --accent-secondary: #d4893a;
    --accent-glow: rgba(232, 165, 75, 0.3);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --success: #4ade80;
    --warning: #fbbf24;
    --error: #f87171;

    /* Typography */
    --font-devanagari: 'Noto Serif Devanagari', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at top, rgba(232, 165, 75, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(232, 165, 75, 0.03) 0%, transparent 40%);
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-primary);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        filter: drop-shadow(0 0 8px var(--accent-glow));
    }

    50% {
        filter: drop-shadow(0 0 16px var(--accent-glow));
    }
}

.logo-title {
    font-family: var(--font-devanagari);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.logo-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.header-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    width: 100%;
}

/* ============================================
   Search Section
   ============================================ */
.search-section {
    margin-bottom: var(--spacing-2xl);
}

.search-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.search-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.search-icon {
    width: 24px;
    height: 24px;
    color: var(--text-muted);
    flex-shrink: 0;
    margin-right: var(--spacing-md);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1.125rem;
    font-family: var(--font-devanagari);
    color: var(--text-primary);
    width: 100%;
}

.search-input::placeholder {
    color: var(--text-muted);
    font-family: var(--font-sans);
}

.clear-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    opacity: 0;
    pointer-events: none;
}

.clear-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

.clear-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Search Options */
.search-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.advanced-options {
    background: rgba(255, 255, 255, 0.02);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    border-top: none;
    border: 1px dashed var(--border-color);
}

.option-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tooltip-hint {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: help;
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.tooltip-hint:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* Toggle Switch */
.toggle-switch {
    display: flex;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 2px;
}

.toggle-switch input {
    display: none;
}

.toggle-switch label {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.toggle-switch input:checked+label {
    background: var(--bg-hover);
    color: var(--text-primary);
    font-weight: 500;
}

/* Range Slider */
.range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100px;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    outline: none;
    border: 1px solid var(--border-color);
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

.option-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.volume-filters {
    display: flex;
    gap: var(--spacing-xs);
}

.volume-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.volume-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.volume-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

/* Checkbox Styling */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-hover);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-label input:checked+.checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-label input:checked+.checkmark::after {
    content: '✓';
    color: var(--bg-primary);
    font-size: 12px;
    font-weight: bold;
}

/* Search Info */
.search-info {
    margin-top: var(--spacing-md);
    text-align: center;
}

.hint-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   Results Section
   ============================================ */
.results-section {
    min-height: 400px;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

/* Initial State */
.initial-state,
.no-results-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.initial-icon,
.no-results-icon {
    width: 120px;
    height: 120px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.initial-state h2,
.no-results-state h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.initial-state p,
.no-results-state p {
    color: var(--text-secondary);
    max-width: 400px;
}

/* Results Container */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.results-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.results-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.search-time {
    margin-left: var(--spacing-sm);
    color: var(--text-muted);
}

/* Result Card */
.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.result-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(232, 165, 75, 0.1);
}

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

.result-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.result-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    background: rgba(232, 165, 75, 0.15);
    border: 1px solid rgba(232, 165, 75, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-primary);
}

.result-page {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.view-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.view-btn svg {
    width: 16px;
    height: 16px;
}

.result-text {
    font-family: var(--font-devanagari);
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.result-text mark {
    background: rgba(232, 165, 75, 0.3);
    color: var(--accent-primary);
    padding: 2px 4px;
    border-radius: 3px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.page-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.page-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
    font-weight: 600;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-ellipsis {
    color: var(--text-muted);
    padding: 0 var(--spacing-sm);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 95%;
    max-width: 1000px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    flex: 1;
    overflow: auto;
    padding: var(--spacing-lg);
}

/* Split View Layout */
.split-view {
    display: flex;
    gap: var(--spacing-lg);
    height: 100%;
    min-height: 400px;
}

.image-panel,
.text-panel {
    flex: 1;
    min-width: 0;
    /* Prevent flex overflow */
    display: flex;
    flex-direction: column;
}

.text-panel {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
}

.text-content {
    font-family: var(--font-devanagari);
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
    overflow-y: auto;
    height: 100%;
    padding-right: var(--spacing-sm);
    white-space: pre-wrap;
    /* Preserve formatting */
}

/* Custom scrollbar for text */
.text-content::-webkit-scrollbar {
    width: 6px;
}

.text-content::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 3px;
}

.image-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.image-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.image-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
}

.image-loading.hidden {
    display: none;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.nav-btn svg {
    width: 18px;
    height: 18px;
}

.page-indicator {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .header-stats {
        width: 100%;
        justify-content: center;
    }

    .logo-title {
        font-size: 1.25rem;
    }

    .search-input {
        font-size: 1rem;
    }

    .search-options {
        flex-direction: column;
        align-items: flex-start;
    }

    .volume-filters {
        flex-wrap: wrap;
    }

    .result-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .modal-footer {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .split-view {
        flex-direction: column;
    }

    .image-container {
        min-height: 300px;
    }

    .text-panel {
        min-height: 200px;
        max-height: 300px;
    }

    .nav-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.result-card {
    animation: fadeIn var(--transition-normal) ease-out;
}

.result-card:nth-child(1) {
    animation-delay: 0ms;
}

.result-card:nth-child(2) {
    animation-delay: 50ms;
}

.result-card:nth-child(3) {
    animation-delay: 100ms;
}

.result-card:nth-child(4) {
    animation-delay: 150ms;
}

.result-card:nth-child(5) {
    animation-delay: 200ms;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}