:root {
    --bg:            #0f1117;
    --bg-elevated:   #181b24;
    --bg-card:       #1e2230;
    --bg-card-hover: #252a3a;
    --text:          #e8ecf1;
    --text-muted:    #8b92a8;
    --text-dim:      #5a6078;
    --accent:        #6366f1;
    --accent-light:  #818cf8;
    --accent-glow:   rgba(99,102,241,0.15);
    --success:       #22c55e;
    --success-bg:    rgba(34,197,94,0.08);
    --danger:        #ef4444;
    --danger-bg:     rgba(239,68,68,0.08);
    --warning:       #f59e0b;
    --warning-bg:    rgba(245,158,11,0.08);
    --border:        rgba(255,255,255,0.06);
    --border-hover:  rgba(255,255,255,0.12);
    --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono:     'JetBrains Mono', 'Fira Code', monospace;
    --shadow-sm:     0 1px 2px rgba(0,0,0,0.3);
    --shadow:        0 4px 24px rgba(0,0,0,0.4);
    --shadow-lg:     0 12px 48px rgba(0,0,0,0.5);
    --radius:        14px;
    --radius-sm:     10px;
    --transition:    0.2s cubic-bezier(0.4,0,0.2,1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* Animated background mesh */
.bg-mesh {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(99,102,241,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139,92,246,0.06) 0%, transparent 55%);
    animation: meshPulse 8s ease-in-out infinite alternate;
}

@keyframes meshPulse {
    0%   { opacity: 0.3; }
    100% { opacity: 0.5; }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header */
.site-header {
    padding: 2.5rem 0 1rem;
    text-align: center;
}

.logo-wrap {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    color: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text);
}

.tagline {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.01em;
}

/* Hero */
.hero {
    padding: 1.5rem 0 2.5rem;
}

.hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.25rem 1.75rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.hero-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

.hero-card h2 {
    font-family: var(--font-sans);
    font-size: 1.65rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lead {
    font-size: 0.9375rem;
    color: var(--text-muted);
    max-width: 440px;
    margin: 0 auto 1.75rem;
    font-weight: 400;
    line-height: 1.55;
}

/* Search Form */
.search-form {
    max-width: 520px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
}

.input-wrap {
    position: relative;
    flex: 1;
}

.input-prefix {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    opacity: 0.5;
    pointer-events: none;
    z-index: 2;
}

.input-group input {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    width: 100%;
    padding: 0.9rem 1rem 0.9rem 2.6rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    outline: none;
}

.input-group input:focus {
    border-color: var(--accent);
    background: var(--bg-card);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.input-group input::placeholder {
    color: var(--text-dim);
    font-weight: 400;
}

.btn-primary {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.9rem 1.75rem;
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 20px rgba(99,102,241,0.35);
    transform: translateY(-1px);
}

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

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

.spinner {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.spinner-ring {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Results */
.results {
    padding: 0 0 2.5rem;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding: 0 0.25rem;
}

.results-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.results-count {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-weight: 500;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
}

.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    cursor: default;
}

.result-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.result-card.available {
    border-color: rgba(34,197,94,0.25);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--success-bg) 100%);
}

.result-card.available:hover {
    border-color: rgba(34,197,94,0.4);
    box-shadow: 0 4px 20px rgba(34,197,94,0.1);
}

.result-card.taken {
    border-color: rgba(239,68,68,0.15);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--danger-bg) 100%);
    opacity: 0.75;
}

.result-card.taken:hover {
    border-color: rgba(239,68,68,0.25);
}

.result-card.unknown {
    border-color: rgba(245,158,11,0.2);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--warning-bg) 100%);
}

.domain-info h4 {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.15rem;
    color: var(--text);
    letter-spacing: -0.01em;
}

.domain-info .status {
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    background: rgba(255,255,255,0.04);
}

.status .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

.status.available  { color: var(--success); }
.status.taken      { color: var(--danger); }
.status.unknown    { color: var(--warning); }

.dot.available  { background: var(--success); box-shadow: 0 0 6px var(--success); }
.dot.taken      { background: var(--danger); }
.dot.unknown    { background: var(--warning); }

.result-action .btn-small {
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    white-space: nowrap;
    transition: all var(--transition);
    letter-spacing: 0.01em;
}

.result-action .btn-small:hover {
    transform: translateY(-1px);
}

.btn-small.register {
    background: var(--success);
    color: #fff;
    box-shadow: 0 2px 8px rgba(34,197,94,0.25);
}

.btn-small.register:hover {
    background: #16a34a;
    box-shadow: 0 4px 16px rgba(34,197,94,0.35);
}

.btn-small.check {
    background: var(--bg-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-small.check:hover {
    border-color: var(--border-hover);
    color: var(--text);
}

.btn-small.taken-btn {
    background: transparent;
    color: var(--text-dim);
    border: 1px dashed var(--border);
    cursor: default;
}

/* Suggestions divider */
.suggestions-divider {
    display: flex;
    align-items: center;
    margin: 1.75rem 0 1rem;
    gap: 0.75rem;
}

.suggestions-divider::before,
.suggestions-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.suggestions-divider span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

/* Features */
.features {
    padding: 2rem 0 2.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.feature {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: border-color var(--transition), transform var(--transition);
}

.feature:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.feature-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.feature h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--text);
}

.feature p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Affiliate */
.affiliate {
    padding: 1rem 0 2.5rem;
}

.affiliate-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.affiliate-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #8b5cf6);
}

.affiliate-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-light);
    background: var(--accent-glow);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.affiliate-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.affiliate-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.btn-affiliate {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--accent) 0%, #8b5cf6 100%);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
    letter-spacing: 0.01em;
}

.btn-affiliate:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(99,102,241,0.35);
}

.affiliate-note {
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-top: 1rem;
    margin-bottom: 0;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0 2rem;
    text-align: center;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.footer-inner p {
    font-size: 0.78rem;
    color: var(--text-dim);
}

.footer-inner a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-inner a:hover {
    color: var(--text);
    text-decoration: underline;
}

.footer-nav {
    display: flex;
    gap: 1rem;
    margin-top: 0.25rem;
}

.footer-nav a {
    font-size: 0.78rem;
    color: var(--text-dim);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-nav a:hover {
    color: var(--text-muted);
}

/* Responsive */
@media (min-width: 640px) {
    .input-group {
        flex-direction: row;
        align-items: stretch;
    }

    .input-wrap {
        flex: 1;
    }

    .btn-primary {
        width: auto;
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-card {
        padding: 2.5rem 2.25rem;
    }

    .hero-card h2 {
        font-size: 1.9rem;
    }

    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Utility */
[hidden] {
    display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--text-dim);
    border-radius: 4px;
}

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