/**
 * Comparator Prețuri România
 * Design modern, distinctiv, dark theme cu accente vibrante
 */

/* ============================================
   CSS Variables & Base
   ============================================ */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --bg-card-hover: #222233;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography */
    --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s 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-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Background Effects
   ============================================ */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(139, 92, 246, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(168, 85, 247, 0.08), transparent);
    pointer-events: none;
    z-index: -2;
}

.bg-noise {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */
.header {
    text-align: center;
    padding: var(--space-3xl) 0;
    animation: fadeInDown 0.8s ease;
}

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

.logo-icon {
    font-size: 3rem;
    animation: bounce 2s infinite;
}

.logo h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.tagline strong {
    color: var(--accent-primary);
    font-weight: 600;
}

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

/* ============================================
   Search Section
   ============================================ */
.search-section {
    margin-bottom: var(--space-3xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.search-form {
    position: relative;
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
}

.search-input-wrapper {
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-sm);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

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

.search-input-wrapper input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 1.125rem;
    color: var(--text-primary);
    padding: var(--space-md) var(--space-lg);
}

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

.search-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-xl);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.search-btn:active {
    transform: translateY(0);
}

.search-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   Categories
   ============================================ */
.categories {
    text-align: center;
}

.categories-label {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
    max-width: 900px;
    margin: 0 auto;
}

.category-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    font-family: inherit;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.category-btn:hover {
    border-color: var(--cat-color, var(--accent-primary));
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.category-btn.active {
    border-color: var(--cat-color, var(--accent-primary));
    background: rgba(99, 102, 241, 0.1);
}

.cat-icon {
    font-size: 2rem;
}

.cat-name {
    font-size: 0.875rem;
    font-weight: 500;
}

/* ============================================
   Loading State
   ============================================ */
.loading-state {
    text-align: center;
    padding: var(--space-3xl);
}

.loader {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-xl);
}

.loader-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.loader-ring:nth-child(2) {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-top-color: var(--accent-secondary);
    animation-delay: -0.4s;
}

.loader-ring:nth-child(3) {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-top-color: #a855f7;
    animation-delay: -0.8s;
}

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

.loading-sub {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

/* ============================================
   Results Section
   ============================================ */
.results-section {
    animation: fadeInUp 0.5s ease;
}

.results-header {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.results-header h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.results-header h2 span {
    color: var(--accent-primary);
}

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

.results-grid {
    display: grid;
    gap: var(--space-lg);
}

/* Result Card */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.result-card:hover {
    border-color: var(--border-color-hover);
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.result-card:hover::before {
    opacity: 1;
}

.result-card.rank-1 {
    border-color: #ffd700;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), var(--bg-card));
}

.result-card.rank-1::before {
    background: linear-gradient(180deg, #ffd700, #ffb700);
    opacity: 1;
}

.result-card.rank-2 {
    border-color: #c0c0c0;
}

.result-card.rank-2::before {
    background: linear-gradient(180deg, #c0c0c0, #a0a0a0);
    opacity: 1;
}

.result-card.rank-3 {
    border-color: #cd7f32;
}

.result-card.rank-3::before {
    background: linear-gradient(180deg, #cd7f32, #a0522d);
    opacity: 1;
}

.result-info {
    min-width: 0;
}

.result-rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.result-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.result-source {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
}

.result-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.result-price-section {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    min-width: 150px;
}

.result-price {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
    white-space: nowrap;
}

.result-price.no-price {
    color: var(--text-muted);
    font-size: 1rem;
}

.confidence-badge {
    font-size: 0.625rem;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-sm);
}

.confidence-badge.high {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.confidence-badge.medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.confidence-badge.low {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
}

.result-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-base);
    margin-top: var(--space-md);
}

.result-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--text-muted);
}

.no-results-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.no-results h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

/* ============================================
   Error State
   ============================================ */
.error-state {
    text-align: center;
    padding: var(--space-3xl);
}

.error-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-lg);
}

.error-state h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.error-state p {
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.retry-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-xl);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    margin-top: auto;
    padding-top: var(--space-3xl);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    margin-bottom: var(--space-lg);
}

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

.footer-note {
    margin-top: var(--space-sm);
    font-size: 0.75rem !important;
}

.footer-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.badge {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

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

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: var(--space-md);
    }
    
    .header {
        padding: var(--space-xl) 0;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .search-input-wrapper {
        flex-direction: column;
        padding: var(--space-sm);
    }
    
    .search-btn {
        width: 100%;
        justify-content: center;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .result-card {
        grid-template-columns: 1fr;
    }
    
    .result-price-section {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        margin-top: var(--space-md);
        padding-top: var(--space-md);
        border-top: 1px solid var(--border-color);
    }
    
    .result-link {
        margin-top: 0;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }
    
    .category-btn {
        padding: var(--space-md);
    }
    
    .cat-icon {
        font-size: 1.5rem;
    }
    
    .cat-name {
        font-size: 0.75rem;
    }
    
    .footer-badges {
        flex-direction: column;
        align-items: center;
    }
}