/* Deep Sea Submarine Interface Style */
@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Teko:wght@400;600&family=Noto+Sans+SC:wght@400;700;900&display=swap');

:root {
    --deep-sea: #01060e;
    --panel-bg: #041224;
    --panel-border: #0a2540;
    --sonar-green: #00ff9d;
    --sonar-green-dim: rgba(0, 255, 157, 0.15);
    --hud-cyan: #00d0ff;
    --hud-cyan-dim: rgba(0, 208, 255, 0.15);
    --alert-red: #ff3366;
    --text-main: #e0f2fe;
    --text-muted: #7dd3fc;
    --font-hud: 'Teko', sans-serif;
    --font-data: 'Share Tech Mono', monospace;
    --font-body: 'Noto Sans SC', sans-serif;
}

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

body {
    background-color: var(--deep-sea);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        linear-gradient(var(--panel-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--panel-border) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; height: auto; display: block; }

/* Dashboard Layout */
.sub-layout {
    display: flex;
    min-height: 100vh;
}

/* 1. Command Sidebar */
.command-sidebar {
    width: 260px;
    background: rgba(4, 18, 36, 0.95);
    border-right: 2px solid var(--hud-cyan);
    position: fixed;
    top: 0; left: 0; height: 100vh;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 5px 0 30px rgba(0, 208, 255, 0.1);
}

.brand-hud {
    font-family: var(--font-hud);
    font-size: 2.5rem;
    color: var(--sonar-green);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 40px;
    text-shadow: 0 0 10px var(--sonar-green);
    border-bottom: 1px dashed var(--sonar-green);
    padding-bottom: 10px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex-grow: 1;
}

.nav-item {
    padding: 12px 15px;
    background: var(--panel-border);
    border-left: 3px solid transparent;
    color: var(--text-muted);
    font-family: var(--font-hud);
    font-size: 1.2rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    clip-path: polygon(0 0, 95% 0, 100% 50%, 95% 100%, 0 100%);
}

.nav-item:hover, .nav-item.active {
    background: var(--hud-cyan-dim);
    border-left-color: var(--hud-cyan);
    color: var(--hud-cyan);
}

.sys-status {
    margin-top: auto;
    padding: 15px;
    border: 1px solid var(--sonar-green);
    background: var(--sonar-green-dim);
    font-family: var(--font-data);
    font-size: 0.85rem;
    color: var(--sonar-green);
}
.sys-status span { display: block; margin-bottom: 5px; }
.blink { animation: blinker 1s linear infinite; }
@keyframes blinker { 50% { opacity: 0; } }

.btn-launch {
    margin-top: 20px;
    background: var(--hud-cyan);
    color: var(--deep-sea);
    border: none;
    padding: 15px;
    font-family: var(--font-hud);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
    transition: 0.3s;
}
.btn-launch:hover {
    background: var(--text-main);
    box-shadow: 0 0 20px var(--hud-cyan);
}

/* Main Viewport */
.main-viewport {
    margin-left: 260px;
    width: calc(100% - 260px);
    padding: 40px;
}

/* 2. Sonar Hero Section */
.hero-sonar {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--panel-border);
    background: radial-gradient(circle at center, var(--panel-bg) 0%, var(--deep-sea) 100%);
    overflow: hidden;
    margin-bottom: 60px;
}

.sonar-ring {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid var(--sonar-green-dim);
    border-radius: 50%;
}
.ring-1 { width: 300px; height: 300px; animation: ping 4s linear infinite; }
.ring-2 { width: 500px; height: 500px; animation: ping 4s linear infinite 1s; }
.ring-3 { width: 700px; height: 700px; animation: ping 4s linear infinite 2s; }

@keyframes ping {
    0% { transform: translate(-50%, -50%) scale(0.5); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    background: rgba(1, 6, 14, 0.8);
    padding: 40px;
    border: 1px solid var(--hud-cyan);
    box-shadow: 0 0 30px var(--hud-cyan-dim);
}

.hero-content h1 {
    font-family: var(--font-hud);
    font-size: 4.5rem;
    color: var(--text-main);
    letter-spacing: 2px;
    margin-bottom: 10px;
}
.hero-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 30px;
}

.hero-actions { display: flex; gap: 20px; justify-content: center; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--sonar-green);
    color: var(--sonar-green);
    padding: 10px 25px;
    font-family: var(--font-hud);
    font-size: 1.2rem;
    cursor: pointer;
}
.btn-outline:hover { background: var(--sonar-green-dim); }

.trust-bar {
    position: absolute;
    bottom: 0; left: 0; width: 100%;
    background: var(--panel-border);
    padding: 10px 0;
    display: flex;
    justify-content: space-around;
    font-family: var(--font-data);
    font-size: 0.9rem;
    color: var(--hud-cyan);
    border-top: 1px solid var(--hud-cyan);
}

/* 3. Dials Panel (Stats) */
.dials-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.dial-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    padding: 30px;
    text-align: center;
    position: relative;
}
.dial-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 20px; height: 2px; background: var(--hud-cyan);
}
.dial-card::after {
    content: ''; position: absolute; bottom: 0; right: 0; width: 20px; height: 2px; background: var(--hud-cyan);
}

.dial-value {
    font-family: var(--font-hud);
    font-size: 3.5rem;
    color: var(--sonar-green);
    line-height: 1;
    margin-bottom: 10px;
    text-shadow: 0 0 10px var(--sonar-green-dim);
}
.dial-label {
    font-family: var(--font-data);
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
}

/* 4. Airlock Features */
.section-header {
    font-family: var(--font-hud);
    font-size: 2.5rem;
    color: var(--text-main);
    border-bottom: 2px solid var(--panel-border);
    padding-bottom: 10px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.section-header::before {
    content: '>>'; color: var(--hud-cyan);
}

.airlock-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.airlock-module {
    background: var(--panel-bg);
    border: 2px solid var(--panel-border);
    padding: 30px;
    position: relative;
    transition: 0.3s;
}
.airlock-module:hover {
    border-color: var(--hud-cyan);
    box-shadow: inset 0 0 20px var(--hud-cyan-dim);
}

.module-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border: 1px solid var(--panel-border);
    margin-bottom: 20px;
    filter: grayscale(80%) sepia(50%) hue-rotate(180deg);
}
.airlock-module:hover .module-img { filter: none; }

.module-title {
    font-family: var(--font-hud);
    font-size: 1.8rem;
    color: var(--hud-cyan);
    margin-bottom: 15px;
}
.module-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* 5. Radar Nodes */
.radar-nodes {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    padding: 40px;
    margin-bottom: 80px;
    position: relative;
}

.nodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.node-point {
    border: 1px solid var(--sonar-green-dim);
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 255, 157, 0.05);
}
.node-point:hover { background: var(--sonar-green-dim); border-color: var(--sonar-green); }

.np-city { font-family: var(--font-data); font-weight: bold; color: var(--text-main); }
.np-ping { font-family: var(--font-data); font-size: 0.8rem; color: var(--sonar-green); }

/* 6. Comms Log (Reviews) */
.comms-log { margin-bottom: 80px; }

.log-entry {
    background: var(--panel-bg);
    border-left: 4px solid var(--hud-cyan);
    padding: 20px;
    margin-bottom: 20px;
    font-family: var(--font-data);
}

.log-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 10px;
    border-bottom: 1px dashed var(--panel-border);
    padding-bottom: 5px;
}
.log-user { color: var(--hud-cyan); font-weight: bold; }
.log-msg { color: var(--text-main); font-size: 1rem; }
.log-stars { color: var(--sonar-green); margin-top: 10px; }

/* 7. Reactor Pricing */
.reactor-pricing { margin-bottom: 80px; }

.reactor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.reactor-core {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    padding: 40px 30px;
    text-align: center;
    position: relative;
}

.reactor-core.active {
    border-color: var(--sonar-green);
    box-shadow: 0 0 30px var(--sonar-green-dim);
}

.rc-level {
    font-family: var(--font-data);
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 20px;
}
.rc-price {
    font-family: var(--font-hud);
    font-size: 4rem;
    color: var(--text-main);
    line-height: 1;
    margin-bottom: 30px;
}
.rc-price span { font-size: 1.5rem; color: var(--text-muted); }

.rc-specs {
    list-style: none;
    text-align: left;
    margin-bottom: 40px;
}
.rc-specs li {
    padding: 10px 0;
    border-bottom: 1px solid var(--panel-border);
    font-size: 0.95rem;
    color: var(--text-muted);
}
.rc-specs li::before { content: '>'; color: var(--hud-cyan); margin-right: 10px; font-family: var(--font-data); }

/* 8. Diagnostics FAQ */
.diagnostics-faq { margin-bottom: 80px; }

.diag-item {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    margin-bottom: 15px;
    padding: 20px;
}
.diag-q {
    font-family: var(--font-data);
    color: var(--hud-cyan);
    font-size: 1.1rem;
    margin-bottom: 10px;
}
.diag-q::before { content: '[QUERY] '; color: var(--text-muted); }
.diag-a {
    color: var(--text-muted);
    font-size: 0.95rem;
    padding-left: 20px;
    border-left: 2px solid var(--panel-border);
}

/* Footer */
.sub-footer {
    border-top: 2px solid var(--panel-border);
    padding: 40px 0;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
}
.foot-brand { font-family: var(--font-hud); font-size: 2rem; color: var(--sonar-green); margin-bottom: 15px; }
.foot-links { display: flex; gap: 40px; }
.foot-col h4 { font-family: var(--font-data); color: var(--text-main); margin-bottom: 15px; }
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 8px; }
.foot-col a { color: var(--text-muted); font-size: 0.9rem; }
.foot-col a:hover { color: var(--hud-cyan); }
.foot-copy { grid-column: 1 / -1; text-align: center; font-family: var(--font-data); color: var(--panel-border); margin-top: 20px; }

/* Subpages */
.page-header {
    background: var(--panel-bg);
    border: 1px solid var(--hud-cyan);
    padding: 60px 40px;
    margin-bottom: 60px;
    text-align: center;
}
.page-header h1 { font-family: var(--font-hud); font-size: 3.5rem; color: var(--hud-cyan); }
.page-header p { color: var(--text-muted); font-family: var(--font-data); }

.dl-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}
.dl-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    padding: 40px;
    text-align: center;
}
.dl-panel h3 { font-family: var(--font-hud); font-size: 2rem; color: var(--text-main); margin-bottom: 15px; }
.dl-panel p { color: var(--text-muted); margin-bottom: 30px; }

.help-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
    margin-bottom: 80px;
}
.help-menu a {
    display: block;
    padding: 15px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    margin-bottom: 10px;
    font-family: var(--font-data);
    color: var(--text-muted);
}
.help-menu a.active, .help-menu a:hover { border-color: var(--hud-cyan); color: var(--hud-cyan); }
.help-content .diag-item { padding: 30px; }
.help-content h3 { font-family: var(--font-hud); font-size: 2rem; color: var(--sonar-green); margin-bottom: 20px; }

/* Responsive */
@media (max-width: 1024px) {
    .command-sidebar { width: 80px; padding: 20px 10px; }
    .brand-hud, .nav-item span, .sys-status, .btn-launch span { display: none; }
    .main-viewport { margin-left: 80px; width: calc(100% - 80px); padding: 20px; }
    .dials-panel, .airlock-grid, .reactor-grid { grid-template-columns: repeat(2, 1fr); }
    .sub-footer { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .sub-layout { flex-direction: column; }
    .command-sidebar { width: 100%; height: auto; position: static; flex-direction: row; align-items: center; justify-content: space-between; padding: 15px; }
    .nav-menu { flex-direction: row; }
    .main-viewport { margin-left: 0; width: 100%; }
    .dials-panel, .airlock-grid, .reactor-grid, .dl-grid, .help-layout { grid-template-columns: 1fr; }
    .hero-sonar { height: 400px; }
    .hero-content h1 { font-size: 3rem; }
}