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

:root {
    --bg: #060B18;
    --grid-major: rgba(0,212,255,0.04);
    --surface: rgba(10,18,36,0.75);
    --surface-2: rgba(14,22,42,0.85);
    --surface-border: rgba(0,212,255,0.1);
    --border: rgba(0,212,255,0.12);
    --border-hover: rgba(0,255,170,0.45);
    --text: #D0DCE8;
    --text-dim: #6E8194;
    --text-faint: #3A4D60;
    --accent: #00D4FF;
    --accent-2: #00FFaa;
    --accent-3: #8B5CF6;
    --glow: rgba(0,212,255,0.4);
    --glow-dim: rgba(0,212,255,0.12);
    --glow-green: rgba(0,255,170,0.35);
    --glow-green-dim: rgba(0,255,170,0.1);
    --glow-purple: rgba(139,92,246,0.25);
    --good: #00FFaa;
    --good-bg: rgba(0,255,170,0.07);
    --good-glow: rgba(0,255,170,0.3);
    --warning: #FFB800;
    --warning-bg: rgba(255,184,0,0.07);
    --warning-glow: rgba(255,184,0,0.3);
    --bad: #FF4466;
    --bad-bg: rgba(255,68,102,0.07);
    --bad-glow: rgba(255,68,102,0.3);
    --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --sans: 'Inter', -apple-system, system-ui, sans-serif;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #EEF1F6;
        --grid-major: rgba(0,120,160,0.06);
        --surface: rgba(255,255,255,0.82);
        --surface-2: rgba(240,243,248,0.9);
        --surface-border: rgba(0,120,160,0.08);
        --border: rgba(0,80,120,0.1);
        --border-hover: rgba(0,160,120,0.3);
        --text: #1A2535;
        --text-dim: #5A6A7A;
        --text-faint: #8A9AAA;
        --accent: #0090BB;
        --accent-2: #008866;
        --accent-3: #7C4DDB;
        --glow: transparent;
        --glow-dim: transparent;
        --glow-green: transparent;
        --glow-green-dim: transparent;
        --glow-purple: transparent;
        --good: #00915D;
        --good-bg: rgba(0,145,93,0.06);
        --good-glow: transparent;
        --warning: #AA7700;
        --warning-bg: rgba(170,119,0,0.06);
        --warning-glow: transparent;
        --bad: #CC2244;
        --bad-bg: rgba(204,34,68,0.06);
        --bad-glow: transparent;
    }
}

body {
    font-family: var(--mono);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    position: relative;
}

/* Dot matrix background */
body::before {
    content: '';
    position: fixed; inset: 0;
    z-index: -2;
    background-image:
        radial-gradient(circle, var(--grid-major) 2px, transparent 2px);
    background-size: 24px 24px;
}

/* Aurora gradient blobs */
body::after {
    content: '';
    position: fixed; inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 800px 500px at 15% 30%, rgba(0,212,255,0.08), transparent),
        radial-gradient(ellipse 600px 600px at 75% 60%, rgba(0,255,170,0.06), transparent),
        radial-gradient(ellipse 500px 400px at 50% 10%, rgba(139,92,246,0.05), transparent);
}

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

@keyframes gradient-slide {
    0% { background-position: 0% 0; }
    100% { background-position: 200% 0; }
}

@keyframes blink { 50% { opacity: 0; } }

/* Gradient text utility */
.gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Score color variants */
.score-good { border-color: var(--good); color: var(--good); background: var(--good-bg); }
.score-warning { border-color: var(--warning); color: var(--warning); background: var(--warning-bg); }
.score-bad { border-color: var(--bad); color: var(--bad); background: var(--bad-bg); }

/* Card surface pattern */
.card {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.9rem 1.1rem;
    background: var(--surface);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 6px;
    text-decoration: none; color: var(--text);
    transition: all 0.2s;
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 20px var(--glow-dim), 0 4px 24px rgba(0,0,0,0.2);
}

/* Accent gradient button */
.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg); border: none;
    font-weight: 700; cursor: pointer;
    font-family: var(--mono);
    text-transform: uppercase;
    transition: filter 0.2s;
}

.btn-accent:hover { filter: brightness(1.15); }

/* Navigation */
.nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.5rem 2rem; max-width: 1400px; margin: 0 auto;
}

.logo {
    display: flex; align-items: center; gap: 0.6rem;
    font-size: 1.4rem; font-weight: 700;
    color: var(--text); text-decoration: none;
}

.logo-icon {
    color: var(--accent);
    filter: drop-shadow(0 0 6px var(--glow));
    flex-shrink: 0;
}

.logo-name {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.logo-dot {
    -webkit-text-fill-color: var(--accent-3);
    text-shadow: 0 0 8px var(--glow-purple);
}

/* Status indicator */
.status-bar {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.7rem; color: var(--text-faint);
}

.status-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--good);
    box-shadow: 0 0 6px var(--good-glow);
    animation: blink 2s ease-in-out infinite;
}

/* Footer */
.footer {
    text-align: center; padding: 2.5rem 2rem;
    color: var(--text-faint); font-size: 0.7rem;
    margin-top: 4rem;
    border-top: 1px solid var(--border);
}

.footer span { color: var(--accent); }

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1.2rem;
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.7rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent);
}

/* Error page */
.error-page {
    max-width: 600px;
    margin: 4rem auto;
    padding: 2rem;
    text-align: center;
}

.error-page h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: var(--sans);
}

.back-link {
    color: var(--accent);
    text-decoration: none;
    display: inline-block;
    margin-top: 1.5rem;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

.notfound-code {
    font-size: 5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* Loading spinner */
@keyframes spin { to { transform: rotate(360deg); } }

.spinner {
    width: 44px; height: 44px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

.loading {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-dim);
    font-size: 1.1rem;
}

/* Signals */
.signals-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 0.6rem;
}

.signal {
    display: flex; align-items: flex-start; gap: 0.75rem;
    padding: 0.9rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.signal::before {
    content: '';
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 3px;
}

.signal-good::before { background: var(--good); }
.signal-warning::before { background: var(--warning); }
.signal-bad::before { background: var(--bad); }

.signal-icon {
    width: 26px; height: 26px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; flex-shrink: 0; font-weight: 700;
    border-radius: 4px;
}

.signal-good .signal-icon { color: var(--good); background: var(--good-bg); text-shadow: 0 0 4px var(--glow-green-dim); }
.signal-warning .signal-icon { color: var(--warning); background: var(--warning-bg); }
.signal-bad .signal-icon { color: var(--bad); background: var(--bad-bg); }

.signal-info strong { font-size: 0.85rem; }

.signal-details {
    font-size: 0.75rem; color: var(--text-dim);
    margin-top: 0.15rem; line-height: 1.55;
    font-family: var(--sans);
}

/* Pending banner */
.pending-banner {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--bg);
    text-align: center;
    padding: 0.6rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

/* Draft banner */
.draft-banner {
    background: var(--warning);
    color: var(--bg);
    text-align: center;
    padding: 0.6rem;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

@media (max-width: 768px) {
    .signals-list { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .nav { padding: 1rem; }
}

@media (max-width: 480px) {
    .status-bar { display: none; }
}