/* Variables */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-elevated: #1a1a24;
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --success: #10b981;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.search-box {
    flex: 1;
    display: flex;
    gap: 0.5rem;
}

.search-box input {
    flex: 1;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-box button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.search-box button:hover {
    background: var(--accent-hover);
}

/* Main */
.main {
    padding: 2rem 0;
}

/* Sections */
section {
    margin-bottom: 3rem;
}

section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.category-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.2s, border-color 0.2s;
}

.category-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.category-card .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.category-card .name {
    font-weight: 500;
}

/* Stores Grid */
.stores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.store-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.2s, border-color 0.2s;
}

.store-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.store-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.store-card .count {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Coupons */
.coupons-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.filters {
    display: flex;
    gap: 0.5rem;
}

.filters select {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.coupons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.coupon-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, border-color 0.2s;
}

.coupon-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.coupon-card .store {
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
    text-decoration: none;
}

.coupon-card .store:hover {
    text-decoration: underline;
}

.coupon-card .name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.coupon-card .description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.coupon-card .code-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.coupon-card .code {
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: monospace;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: background 0.2s;
}

.coupon-card .code:hover {
    background: var(--accent-hover);
}

.coupon-card .discount {
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

.coupon-card .expires {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

/* Load More */
.load-more {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 2rem auto 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.load-more:hover {
    border-color: var(--accent);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--success);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Loading & Empty States */
.loading, .empty, .error {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error {
    color: #ef4444;
}

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .search-box {
        width: 100%;
    }
    
    .coupons-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filters {
        width: 100%;
    }
    
    .filters select {
        flex: 1;
    }
    
    .coupons-grid {
        grid-template-columns: 1fr;
    }
}