/* ============================================
   Template Library - Dark Mysterious Theme
   Professional yet Enigmatic Design
   ============================================ */

:root {
    /* Dark Base Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a1f2e;
    --bg-card: rgba(26, 31, 46, 0.8);
    --bg-card-hover: rgba(30, 36, 52, 0.95);
    
    /* Accent Colors - Purple/Blue Mysterious Gradient */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #a855f7;
    --accent-glow: rgba(139, 92, 246, 0.3);
    
    /* Text Colors */
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Border & Shadow */
    --border-color: rgba(99, 102, 241, 0.2);
    --border-hover: rgba(139, 92, 246, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ============================================
   Animated Background
   ============================================ */

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        ellipse at 20% 50%,
        rgba(99, 102, 241, 0.15) 0%,
        transparent 50%
    ),
    radial-gradient(
        ellipse at 80% 80%,
        rgba(139, 92, 246, 0.1) 0%,
        transparent 50%
    ),
    radial-gradient(
        ellipse at 40% 20%,
        rgba(168, 85, 247, 0.08) 0%,
        transparent 50%
    );
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-10%, -10%) rotate(120deg); }
    66% { transform: translate(10%, 10%) rotate(240deg); }
}

.bg-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(2px 2px at 60% 70%, rgba(99, 102, 241, 0.2), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(168, 85, 247, 0.2), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(139, 92, 246, 0.2), transparent),
        radial-gradient(2px 2px at 90% 60%, rgba(99, 102, 241, 0.2), transparent);
    background-size: 200% 200%;
    animation: particleMove 30s linear infinite;
    opacity: 0.6;
}

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

/* ============================================
   Main Container
   ============================================ */

.main-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding: var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
}

/* ============================================
   Header
   ============================================ */

.main-header {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.main-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent,
        var(--accent-primary),
        var(--accent-secondary),
        var(--accent-primary),
        transparent
    );
    animation: headerGlow 3s ease infinite;
}

@keyframes headerGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

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

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

.btn-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.btn-back:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: translateX(-2px);
}

.btn-back .icon {
    font-size: 18px;
}

.header-title {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.title-icon {
    font-size: 36px;
    filter: drop-shadow(0 0 10px var(--accent-glow));
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

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

.language-selector {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.language-selector:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.language-selector option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.5);
}

.btn-icon {
    font-size: 18px;
    font-weight: 300;
}

/* ============================================
   Search Section
   ============================================ */

.search-section {
    margin-bottom: var(--spacing-lg);
}

.search-container {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: var(--text-tertiary);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-clear {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 24px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

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

.filter-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filter-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.filter-tag:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.filter-tag.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: transparent;
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* ============================================
   Templates Section
   ============================================ */

.templates-section {
    margin-bottom: var(--spacing-xl);
}

.templates-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-sm);
}

.templates-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.view-toggle {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-tertiary);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.view-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 18px;
    font-family: inherit;
}

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

.view-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* ============================================
   Templates Grid
   ============================================ */

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
}

.templates-grid.list-view {
    grid-template-columns: 1fr;
}

.template-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.template-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--accent-primary),
        var(--accent-secondary),
        var(--accent-primary)
    );
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.template-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.template-card:hover::before {
    transform: scaleX(1);
}

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

.template-icon {
    font-size: 32px;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.template-badge {
    padding: 4px var(--spacing-xs);
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 11px;
    color: var(--accent-primary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.template-card-body {
    margin-bottom: var(--spacing-sm);
}

.template-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.template-description {
    font-size: 14px;
    color: var(--text-tertiary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.template-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--text-muted);
}

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

.template-action-btn {
    padding: 6px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.template-action-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* List View */
.template-card.list-view {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.template-card.list-view .template-icon {
    font-size: 40px;
    flex-shrink: 0;
}

.template-card.list-view .template-card-body {
    flex: 1;
    margin-bottom: 0;
}

.template-card.list-view .template-card-footer {
    border-top: none;
    padding-top: 0;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
}

/* ============================================
   Loading & Empty States
   ============================================ */

.template-loading,
.templates-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-tertiary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    animation: spin 1s linear infinite;
}

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

.empty-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.templates-empty h3 {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.templates-empty p {
    color: var(--text-muted);
}

/* ============================================
   Modal
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    animation: fadeIn var(--transition-normal);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    animation: modalSlideIn var(--transition-normal);
    z-index: 1001;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-large {
    width: 90%;
    max-width: 1200px;
}

.modal-preview {
    width: 90%;
    max-width: 1000px;
}

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

.modal-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 32px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all var(--transition-fast);
    font-family: inherit;
}

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

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 100px);
}

.preview-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.preview-container {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: white;
    min-height: 500px;
}

.preview-container iframe {
    width: 100%;
    height: 600px;
    border: none;
}

/* ============================================
   Form Styles
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: 'JetBrains Mono', monospace;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: 'JetBrains Mono', monospace;
}

.form-help {
    margin-top: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Skeleton Loader
   ============================================ */

.skeleton {
    animation: skeletonPulse 1.5s ease-in-out infinite;
    pointer-events: none;
}

@keyframes skeletonPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.skeleton-icon,
.skeleton-badge,
.skeleton-title,
.skeleton-text,
.skeleton-meta,
.skeleton-actions {
    background: linear-gradient(90deg, 
        var(--bg-tertiary) 0%, 
        rgba(99, 102, 241, 0.1) 50%, 
        var(--bg-tertiary) 100%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s infinite;
    border-radius: 4px;
}

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

.skeleton-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.skeleton-badge {
    width: 60px;
    height: 20px;
}

.skeleton-title {
    width: 70%;
    height: 20px;
    margin-bottom: var(--spacing-xs);
}

.skeleton-text {
    width: 100%;
    height: 14px;
    margin-bottom: var(--spacing-xs);
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-meta {
    width: 100px;
    height: 14px;
}

.skeleton-actions {
    width: 100px;
    height: 32px;
}

.skeleton-header,
.skeleton-body,
.skeleton-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.skeleton-footer {
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 500px;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    color: var(--text-primary);
    font-size: 14px;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

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

.toast-success {
    border-left: 3px solid #10b981;
}

.toast-error {
    border-left: 3px solid #ef4444;
}

.toast-warning {
    border-left: 3px solid #f59e0b;
}

.toast-info {
    border-left: 3px solid var(--accent-primary);
}

/* ============================================
   Search Highlighting
   ============================================ */

template-card mark {
    background: rgba(99, 102, 241, 0.3);
    color: var(--accent-primary);
    padding: 2px 4px;
    border-radius: 4px;
    font-weight: 600;
}

/* ============================================
   Error State
   ============================================ */

.error-state {
    color: #ef4444;
}

.error-state .empty-icon {
    filter: grayscale(0);
}

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

@media (max-width: 768px) {
    .main-container {
        padding: var(--spacing-sm);
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .header-left {
        flex-direction: column;
        align-items: stretch;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .preview-actions {
        flex-direction: column;
    }
    
    .preview-actions .btn {
        width: 100%;
    }
}