/* ===================================
   CSS RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Neural Arc / Helium AI Brand Colors */
    --primary: #00E5FF;
    --primary-dark: #00B8D4;
    --secondary: #006D77;
    --accent: #00E5FF;
    --success: #10b981;
    --danger: #ef4444;
    
    /* Neutral Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #EDF6F9;
    --bg-tertiary: #D9E8EA;
    --text-primary: #0A1128;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --border: #D9E8EA;
    --border-light: #EDF6F9;
    
    /* 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);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-primary);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===================================
   HEADER
   =================================== */
.header {
    background: linear-gradient(135deg, #006D77 0%, #00E5FF 100%);
    color: white;
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
}

.header h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.95;
    font-weight: 400;
    margin-top: var(--spacing-sm);
}

/* ===================================
   SEARCH & FILTER SECTION
   =================================== */
.search-section {
    background: var(--bg-primary);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.search-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    width: 20px;
    height: 20px;
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 3rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-base);
    background: var(--bg-secondary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
}

.clear-btn {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.filter-container {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn i {
    width: 18px;
    height: 18px;
}

.filter-btn .count {
    background: var(--bg-tertiary);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.filter-btn.active .count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.results-info {
    text-align: center;
    margin-top: var(--spacing-md);
}

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

.results-info strong {
    color: var(--primary);
    font-weight: 600;
}

/* ===================================
   BENTO GRID GALLERY
   =================================== */
.gallery-section {
    padding: var(--spacing-2xl) 0;
    min-height: 60vh;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    animation: fadeIn 0.5s ease-in-out;
}

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

.bento-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
}

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

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-placeholder {
    width: 100%;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-tertiary);
}

.card-placeholder i {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
}

.card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.card-category {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

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

.card-colors {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: auto;
}

.color-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border);
    transition: all var(--transition-fast);
}

.color-dot:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-md);
}

.no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.no-results-icon {
    width: 64px;
    height: 64px;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-lg);
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   MODAL
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    animation: modalFadeIn var(--transition-base);
}

.modal.active {
    display: block;
}

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

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-primary);
    max-width: 1200px;
    margin: 2rem auto;
    border-radius: var(--radius-xl);
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    animation: modalSlideUp var(--transition-slow);
    box-shadow: var(--shadow-xl);
}

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

.modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--bg-secondary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

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

.modal-body {
    padding: var(--spacing-2xl);
}

.modal-header {
    margin-bottom: var(--spacing-xl);
}

.modal-title-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-primary);
    margin: 0;
}

.modal-category {
    padding: 0.5rem 1rem;
    background: var(--secondary);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.modal-timestamp {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.modal-timestamp::before {
    content: '⏱';
}

.modal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.modal-left,
.modal-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.modal-image-container {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-secondary);
}

.modal-image {
    width: 100%;
    height: auto;
    display: block;
}

.image-placeholder {
    width: 100%;
    height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-tertiary);
}

.image-placeholder i {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
}

.modal-description,
.modal-elements,
.modal-palette,
.modal-prompt {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.modal-description h3,
.modal-elements h3,
.modal-palette h3,
.modal-prompt h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.modal-description h3 i,
.modal-elements h3 i,
.modal-palette h3 i,
.modal-prompt h3 i {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.modal-description p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.modal-elements ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.modal-elements li {
    color: var(--text-secondary);
    padding-left: var(--spacing-lg);
    position: relative;
}

.modal-elements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.color-swatches {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
}

.color-swatch {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.color-box {
    width: 100%;
    height: 60px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.color-box:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.color-code {
    font-size: 0.75rem;
    font-family: 'Courier New', monospace;
    color: var(--text-tertiary);
    text-align: center;
}

.prompt-box {
    position: relative;
}

.prompt-box p {
    color: var(--text-secondary);
    line-height: 1.7;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-md);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    width: 100%;
    justify-content: center;
}

.copy-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.copy-btn i {
    width: 16px;
    height: 16px;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.action-btn i {
    width: 18px;
    height: 18px;
}

.action-btn.primary {
    background: var(--primary);
    color: var(--text-primary);
}

.action-btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.action-btn.secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

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

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

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

.footer-left p {
    margin: 0;
    opacity: 0.9;
}

.footer-subtitle {
    font-size: 0.875rem;
    opacity: 0.7;
    margin-top: var(--spacing-xs);
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    transition: all var(--transition-base);
}

.footer-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-link i {
    width: 20px;
    height: 20px;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 1024px) {
    .modal-grid {
        grid-template-columns: 1fr;
    }
    
    .bento-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-xl) 0;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .filter-container {
        flex-direction: column;
    }
    
    .filter-btn {
        width: 100%;
        justify-content: space-between;
    }
    
    .bento-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
    
    .modal-body {
        padding: var(--spacing-lg);
    }
    
    .modal-title {
        font-size: 1.75rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .color-swatches {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .search-input {
        font-size: 0.875rem;
    }
    
    .modal-title-section {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
    animation: modalSlideUp 0.3s ease-in-out;
}