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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--gray-500);
    font-size: 1.1rem;
}

.search-group {
    min-width: 150px;
    flex: 1;
}

#search-input {
    width: 100%;
    height: 38px;
    padding: 0.625rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.9375rem;
    font-family: inherit;
    background: white;
    cursor: text;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-sizing: border-box;
}

#search-input:hover {
    border-color: var(--primary);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#search-input::placeholder {
    color: var(--gray-400);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 150px;
    flex: 1;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
}

.filter-group select {
    height: 38px;
    padding: 0.625rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.9375rem;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.filter-group select:hover {
    border-color: var(--primary);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.stats-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.stat {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    text-align: center;
    min-width: 120px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-800);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat.available .stat-value {
    color: var(--success);
}

.stat.unavailable .stat-value {
    color: var(--danger);
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.error {
    text-align: center;
    padding: 3rem;
    background: var(--danger-bg);
    border-radius: 12px;
    color: var(--danger);
}

.domain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.domain-card {
    background: white;
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 2px solid transparent;
}

.domain-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.domain-card.available {
    border-color: var(--success);
}

.domain-card.unavailable {
    opacity: 0.7;
}

.domain-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
    word-break: break-all;
}

.domain-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge.available {
    background: var(--success-bg);
    color: var(--success);
}

.badge.unavailable {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge.premium {
    background: var(--warning-bg);
    color: var(--warning);
}

.domain-pricing {
    margin-bottom: 1rem;
}

.price-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9375rem;
    padding: 0.25rem 0;
}

.price-label {
    color: var(--gray-500);
}

.price-value {
    font-weight: 600;
    color: var(--gray-700);
}

.register-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: background-color 0.2s;
}

.register-btn:hover {
    background: var(--primary-dark);
}

.register-btn.disabled {
    background: var(--gray-300);
    cursor: not-allowed;
    pointer-events: none;
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray-500);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
    }

    .controls {
        padding: 1rem;
    }

    .filter-group {
        flex: 1;
        min-width: 100%;
    }

    .search-group {
        min-width: 100%;
    }

    .stats-bar {
        flex-direction: column;
    }

    .stat {
        min-width: 100%;
    }

    .domain-grid {
        grid-template-columns: 1fr;
    }
}