:root {
    --bg: #0a0a0f;
    --bg2: #0f0f1a;
    --card: #12121f;
    --border: #1e1e3a;
    --accent: #00f0ff;
    --accent2: #a855f7;
    --accent3: #10b981;
    --text: #e2e8f0;
    --text-dim: #64748b;
    --ok: #10b981;
    --warn: #f59e0b;
    --err: #ef4444;
    --glow: 0 0 20px rgba(0, 240, 255, 0.15);
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background grid */
.grid-bg {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* Scanline effect */
.scanline {
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 1;
}

/* Topbar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    color: var(--accent);
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--accent);
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 1.2rem;
    letter-spacing: 3px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 0.6rem;
    color: var(--text-dim);
    letter-spacing: 2px;
    align-self: flex-end;
    padding-bottom: 2px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.clock {
    color: var(--text-dim);
    font-size: 0.85rem;
}

.status-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--ok);
    border-radius: 999px;
    font-size: 0.7rem;
    letter-spacing: 1px;
    color: var(--ok);
    background: rgba(16, 185, 129, 0.1);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ok);
    animation: pulse 2s infinite;
}

.pulse-dot.small {
    width: 6px;
    height: 6px;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

/* Hero */
.hero {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem 2rem;
    position: relative;
    z-index: 2;
}

.hero-title {
    text-align: center;
    margin-bottom: 0.5rem;
}

.glitch {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: clamp(2.5rem, 8vw, 5rem);
    letter-spacing: 8px;
    display: block;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--accent) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 4s ease infinite;
    position: relative;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-sub {
    font-size: 0.75rem;
    letter-spacing: 6px;
    color: var(--text-dim);
    margin-top: 0.5rem;
    display: block;
}

.hero-desc {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 3rem;
}

/* Stack Container */
.stack-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    margin-bottom: 3rem;
}

.stack-label {
    font-size: 0.6rem;
    letter-spacing: 4px;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    padding: 0.3rem 1rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg2);
}

/* Stack Layers */
.stack-layer {
    width: 100%;
    max-width: 700px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.stack-layer:hover {
    border-color: var(--accent);
    box-shadow: var(--glow);
    transform: translateY(-2px);
}

.layer-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}

.stack-layer[data-layer="node"] .layer-glow {
    background: linear-gradient(90deg, transparent, var(--accent2), transparent);
}

.stack-layer[data-layer="pm2"] .layer-glow {
    background: linear-gradient(90deg, transparent, var(--accent3), transparent);
}

.layer-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.layer-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg2);
}

.stack-layer[data-layer="nginx"] .layer-icon { color: var(--accent); }
.stack-layer[data-layer="node"] .layer-icon { color: var(--accent2); }
.stack-layer[data-layer="pm2"] .layer-icon { color: var(--accent3); }

.layer-info {
    flex: 1;
}

.layer-name {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 2px;
    display: block;
}

.layer-role {
    font-size: 0.65rem;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.status-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    font-size: 0.65rem;
    letter-spacing: 1px;
    font-weight: 700;
}

.status-badge.ok {
    background: rgba(16, 185, 129, 0.15);
    color: var(--ok);
    border: 1px solid var(--ok);
}

.status-badge.warn {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warn);
    border: 1px solid var(--warn);
}

.status-badge.err {
    background: rgba(239, 68, 68, 0.15);
    color: var(--err);
    border: 1px solid var(--err);
}

.layer-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.metric {
    text-align: center;
    padding: 0.5rem;
    background: var(--bg2);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.metric-label {
    display: block;
    font-size: 0.55rem;
    letter-spacing: 2px;
    color: var(--text-dim);
    margin-bottom: 0.3rem;
}

.metric-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
}

.layer-bar {
    height: 4px;
    background: var(--bg2);
    border-radius: 999px;
    overflow: hidden;
}

.layer-bar-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    transition: width 0.5s ease;
}

.stack-layer[data-layer="nginx"] .layer-bar-fill { background: var(--accent); }
.stack-layer[data-layer="node"] .layer-bar-fill { background: var(--accent2); }
.stack-layer[data-layer="pm2"] .layer-bar-fill { background: var(--accent3); }

/* Connectors */
.stack-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.3rem 0;
}

.connector-line {
    width: 2px;
    height: 20px;
    background: var(--border);
}

.connector-arrow {
    color: var(--text-dim);
    font-size: 0.6rem;
    line-height: 1;
}

/* Log Section */
.log-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.2rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
}

.log-title {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-dim);
}

.log-indicator {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.6rem;
    letter-spacing: 1px;
    color: var(--ok);
}

.log-feed {
    padding: 1rem 1.2rem;
    max-height: 200px;
    overflow-y: auto;
    font-size: 0.75rem;
    line-height: 1.8;
}

.log-feed::-webkit-scrollbar {
    width: 4px;
}

.log-feed::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 999px;
}

.log-entry {
    opacity: 0;
    animation: fade-in 0.3s ease forwards;
}

@keyframes fade-in {
    to { opacity: 1; }
}

.log-time {
    color: var(--text-dim);
}

.log-info { color: var(--accent); }
.log-warn { color: var(--warn); }
.log-error { color: var(--err); }
.log-success { color: var(--ok); }

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.65rem;
    color: var(--text-dim);
    letter-spacing: 1px;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

.footer-sep {
    margin: 0 0.5rem;
    opacity: 0.5;
}

.footer-urls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.6rem;
    flex-wrap: wrap;
}

.footer-urls a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dotted var(--accent);
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.footer-urls a:hover {
    color: var(--accent2);
    text-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
}

/* Responsive */
@media (max-width: 600px) {
    .layer-metrics {
        grid-template-columns: 1fr;
    }

    .topbar {
        padding: 0.8rem 1rem;
    }

    .hero {
        padding: 2rem 1rem 1rem;
    }
}