/* ==========================================
   CSS Variables & Root Styles
   ========================================== */
:root {
    /* Light Mode Colors - Jeju-inspired palette */
    --primary-color: #0066FF;
    --primary-rgb: 0, 102, 255;
    --primary-light: #3385FF;
    --primary-dark: #0052CC;
    --secondary-color: #FF6B6B;
    --accent-color: #4ECDC4;
    --jeju-orange: #FF9500;
    --jeju-green: #2ECC71;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F3F5;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6C757D;
    --text-tertiary: #ADB5BD;
    --text-inverse: #FFFFFF;
    
    /* Border & Shadow */
    --border-color: #E9ECEF;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Spacing */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-primary: #0F1419;
    --bg-secondary: #16191E;
    --bg-tertiary: #1C2026;
    --bg-card: #1C2026;
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    --text-primary: #E7E9EA;
    --text-secondary: #8B949E;
    --text-tertiary: #586069;
    
    --border-color: #2D333B;
    --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);
}

/* ==========================================
   Global Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   Header
   ========================================== */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
    animation: float 3s ease-in-out infinite;
}

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

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text .subtitle {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: -4px;
}

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

.admin-link {
    background: var(--bg-tertiary);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.admin-link:hover {
    background: var(--jeju-orange);
    color: white;
    transform: scale(1.05) rotate(90deg);
}

.logout-btn {
    background: var(--bg-tertiary);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    background: var(--danger-color, #ef4444);
    color: white;
    transform: scale(1.05);
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.threads-link {
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.threads-link:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    background: linear-gradient(135deg, 
        rgba(0, 102, 255, 0.05) 0%, 
        rgba(78, 205, 196, 0.05) 100%);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border-color);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.hero-badge i {
    animation: flutter 2s ease-in-out infinite;
}

@keyframes flutter {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.commercial-notice {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(var(--primary-rgb), 0.05);
    border: 1px solid rgba(var(--primary-rgb), 0.1);
    border-radius: var(--radius-md);
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.commercial-notice a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.commercial-notice a:hover {
    border-bottom-color: var(--primary-color);
}

/* Search Bar */
.search-container {
    margin-bottom: var(--spacing-lg);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0 var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
    transition: all var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.search-box i {
    color: var(--text-tertiary);
    font-size: 1.25rem;
}

.search-box input {
    flex: 1;
    border: none;
    background: none;
    padding: 1rem 0.75rem;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
}

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

.clear-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: -4px;
}

/* ==========================================
   Filter Section
   ========================================== */
.filter-section {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 85px;
    z-index: 999;
    backdrop-filter: blur(10px);
}

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

.filter-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.reset-btn {
    background: var(--bg-tertiary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

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

.filter-chips {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.chip {
    background: var(--bg-secondary);
    border: 2px solid transparent;
    padding: 0.625rem 1.25rem;
    border-radius: 100px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.chip:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.chip.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ==========================================
   Prompts Section
   ========================================== */
.prompts-section {
    padding: var(--spacing-xl) 0;
    min-height: 60vh;
}

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

.results-info {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.results-info span {
    color: var(--primary-color);
    font-weight: 700;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-controls label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.sort-controls select {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.sort-controls select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Prompts Grid */
.prompts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

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

.prompt-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.card-thumbnail {
    width: 100%;
    height: 240px;
    object-fit: cover;
    background: var(--bg-secondary);
}

.card-content {
    padding: var(--spacing-md);
}

.card-category {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.375rem 0.875rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-category.nano-banana {
    background: linear-gradient(135deg, #FF9500, #FFB800);
}

.card-category.grok {
    background: linear-gradient(135deg, #0066FF, #00B8FF);
}

.card-category.sora {
    background: linear-gradient(135deg, #FF6B6B, #FF9999);
}

.card-category.veo {
    background: linear-gradient(135deg, #9B59B6, #C792EA);
}

.card-category.kling {
    background: linear-gradient(135deg, #16A085, #1ABC9C);
}

.card-category.other {
    background: linear-gradient(135deg, #4ECDC4, #44A08D);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.card-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    line-height: 1.6;
}

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

.card-date {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.card-likes {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--secondary-color);
    font-size: 0.875rem;
    font-weight: 500;
}

.card-likes-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    background: transparent;
    border: none;
    color: var(--secondary-color);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.card-likes-btn:hover {
    background: var(--bg-tertiary);
    color: var(--danger-color);
    transform: scale(1.05);
}

.card-likes-btn:active {
    transform: scale(0.95);
}

.card-likes-btn.liked {
    color: var(--danger-color);
}

.card-likes-btn i {
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.card-likes-btn:hover i {
    color: var(--danger-color);
}

.card-likes-btn i.pulse {
    animation: heartPulse 0.6s ease-in-out;
}

@keyframes heartPulse {
    0% {
        transform: scale(1);
    }
    25% {
        transform: scale(1.3);
    }
    50% {
        transform: scale(1.1);
    }
    75% {
        transform: scale(1.4);
    }
    100% {
        transform: scale(1);
    }
}

.likes-count {
    font-family: 'Inter', sans-serif;
    font-variant-numeric: tabular-nums;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: var(--spacing-sm);
}

.tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.25rem 0.625rem;
    border-radius: 100px;
    font-size: 0.75rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.empty-state i {
    font-size: 4rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    animation: spin 1s linear infinite;
}

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

.loading-state p {
    color: var(--text-secondary);
}

/* ==========================================
   Pagination
   ========================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
}

.page-btn:hover:not(.disabled):not(.active) {
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

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

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

.page-ellipsis {
    color: var(--text-tertiary);
    padding: 0 0.5rem;
    user-select: none;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .pagination {
        gap: 0.25rem;
    }
    
    .page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.8125rem;
    }
}

/* ==========================================
   Modal
   ========================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    animation: fadeIn var(--transition-normal);
}

.modal.active {
    display: block;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    max-width: 900px;
    max-height: 90vh;
    margin: 5vh auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    animation: slideUp var(--transition-normal);
}

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

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-primary);
    z-index: 10;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--secondary-color);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-xl);
    max-height: 85vh;
    overflow-y: auto;
}

.modal-category {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.modal-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.modal-date {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.modal-likes {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.modal-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.modal-images img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}

.modal-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.modal-prompt {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.prompt-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.copy-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.copy-btn:active {
    transform: scale(0.95);
}

.prompt-code {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.modal-tags .tag {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
}

/* ==========================================
   Toast Notification
   ========================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all var(--transition-normal);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.toast i {
    font-size: 1.25rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ==========================================
   License Notice
   ========================================== */
.license-notice {
    margin: var(--spacing-md) auto var(--spacing-lg);
    padding: var(--spacing-md);
    max-width: 700px;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.05), rgba(78, 205, 196, 0.05));
    border: 1px solid rgba(var(--primary-rgb), 0.15);
    border-radius: var(--radius-lg);
    text-align: center;
}

.license-notice h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.license-notice h4 i {
    color: var(--jeju-orange);
}

.license-notice p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: var(--spacing-xs) 0;
    line-height: 1.6;
}

.license-terms {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: var(--spacing-sm) 0;
    font-size: 0.85rem;
}

.license-terms i {
    color: var(--primary-color);
}

.license-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.license-link:hover {
    background: var(--primary-color);
    color: white;
}

/* ==========================================
   Authentication Screen
   ========================================== */
.auth-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.auth-container {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    text-align: center;
    animation: slideUp 0.5s ease;
}

.auth-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-logo i {
    font-size: 2.5rem;
    color: white;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.auth-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

.auth-input-group {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.auth-input-group i.fa-key {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 1.1rem;
}

.auth-input-group input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    padding-left: 3rem;
    padding-right: 3rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.auth-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-card);
}

.toggle-password {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.5rem;
    transition: color var(--transition-fast);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.toggle-password:active {
    transform: translateY(-50%) scale(0.95);
}

.auth-error {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid var(--secondary-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    color: var(--secondary-color);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.auth-submit {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
}

.auth-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.auth-footer {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.auth-footer i {
    color: var(--accent-color);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* ==========================================
   Dark Mode Specific Styles
   ========================================== */
body.dark-mode .license-notice {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(78, 205, 196, 0.1));
    border-color: rgba(var(--primary-rgb), 0.2);
}

body.dark-mode .license-link {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

body.dark-mode .license-link:hover {
    background: var(--primary-light);
    color: var(--text-inverse);
}

body.dark-mode .auth-container {
    background: var(--bg-card);
}

body.dark-mode .auth-input-group input {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-mode .auth-input-group input:focus {
    background: var(--bg-tertiary);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .commercial-notice {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .prompts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .filter-chips {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--spacing-xs);
        -webkit-overflow-scrolling: touch;
    }
    
    .chip {
        white-space: nowrap;
    }
    
    .prompts-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .modal-content {
        max-width: 95vw;
        margin: 2.5vh auto;
        max-height: 95vh;
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
    
    .modal-images {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .logo-text h1 {
        font-size: 1.25rem;
    }
    
    .threads-link {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .toast {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        left: var(--spacing-md);
    }
    
    .license-notice {
        padding: var(--spacing-sm);
    }
    
    .license-notice h4 {
        font-size: 0.9rem;
    }
    
    .license-terms {
        font-size: 0.75rem;
        flex-direction: column;
    }
    
    .auth-container {
        padding: var(--spacing-lg);
    }
    
    .auth-title {
        font-size: 1.5rem;
    }
    
    .auth-logo {
        width: 60px;
        height: 60px;
    }
    
    .auth-logo i {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .filter-section {
        top: 80px;
    }
    
    .prompts-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Scrollbar Styling
   ========================================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

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

/* ==========================================
   Utility Classes
   ========================================== */
.hide {
    display: none !important;
}

.show {
    display: block !important;
}

.fade-in {
    animation: fadeIn var(--transition-normal);
}

.slide-up {
    animation: slideUp var(--transition-normal);
}