/* MARINES — dark crimson + seafoam, rounded glass cards, gradient hero, gauge widget, drawer + side nav.
   Fundamentally different from WALOU industrial slabs. */
:root {
  --mrn-primary: #DC2626;
  --mrn-primary-dark: #7F1D1D;
  --mrn-accent: #10B981;
  --mrn-bg: #0B0608;
  --mrn-surface: #1A0F12;
  --mrn-surface-glow: rgba(220, 38, 38, 0.05);
  --mrn-text: #FCE7E7;
  --mrn-muted: #B4878B;
  --mrn-border: #2D1518;
  --mrn-radius: 16px;
  --mrn-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--mrn-bg); color: var(--mrn-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: var(--mrn-accent); text-decoration: none; }
a:hover { color: var(--mrn-primary); }

.mrn-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }

/* Drawer (left rail) */
.mrn-drawer {
  background: var(--mrn-surface);
  border-right: 1px solid var(--mrn-border);
  padding: 28px 18px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.mrn-drawer__logo { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; }
.mrn-orb {
  width: 36px; height: 36px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--mrn-primary), var(--mrn-primary-dark));
  box-shadow: 0 0 24px rgba(220, 38, 38, 0.4);
  flex-shrink: 0;
}
.mrn-drawer__brand { font-weight: 800; font-size: 1.05rem; letter-spacing: -0.02em; line-height: 1.2; }
.mrn-drawer__sub { font-weight: 400; font-size: 0.78rem; color: var(--mrn-muted); text-transform: uppercase; letter-spacing: 0.08em; }
.mrn-drawer__nav { display: flex; flex-direction: column; gap: 4px; }
.mrn-drawer__link {
  padding: 10px 14px; border-radius: 12px;
  color: var(--mrn-muted); font-size: 0.92rem; font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.mrn-drawer__link:hover { background: var(--mrn-surface-glow); color: var(--mrn-text); }
.mrn-drawer__link--active { background: var(--mrn-primary-dark); color: var(--mrn-text); }
.mrn-drawer__footer { margin-top: auto; color: var(--mrn-muted); font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; }

/* Main column */
.mrn-main { padding: 32px clamp(20px, 4vw, 48px) 48px; max-width: 920px; }
.mrn-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--mrn-surface) 0%, var(--mrn-primary-dark) 130%);
  border: 1px solid var(--mrn-border); border-radius: var(--mrn-radius);
  padding: 40px clamp(24px, 4vw, 48px);
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center;
  box-shadow: var(--mrn-shadow);
}
.mrn-hero__gradient {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.15), transparent 50%);
}
.mrn-hero__copy { position: relative; z-index: 1; }
.mrn-eyebrow {
  display: inline-block; padding: 4px 10px; border-radius: 8px;
  background: rgba(252, 231, 231, 0.06); color: var(--mrn-accent);
  font-family: 'JetBrains Mono', monospace; font-size: 0.72rem;
  letter-spacing: 0.08em; margin-bottom: 12px;
}
.mrn-hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 12px; }
.mrn-hero__lede { color: var(--mrn-muted); max-width: 460px; }

/* Gauge widget */
.mrn-gauge-wrap { position: relative; z-index: 1; }
.mrn-gauge {
  width: 96px; height: 96px; position: relative;
  display: grid; place-items: center;
}
.mrn-gauge__ring {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(var(--mrn-accent) 0deg, var(--mrn-accent) 130deg, transparent 130deg, transparent 360deg);
  mask: radial-gradient(circle at center, transparent 32px, black 33px);
  -webkit-mask: radial-gradient(circle at center, transparent 32px, black 33px);
}
.mrn-gauge__inner {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--mrn-bg); color: var(--mrn-accent);
  display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace; font-weight: 800; font-size: 1.05rem;
  border: 1px solid var(--mrn-border);
}

/* Features */
.mrn-features { margin-top: 40px; }
.mrn-features h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 20px; }
.mrn-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.mrn-card {
  background: var(--mrn-surface);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--mrn-border); border-radius: var(--mrn-radius);
  padding: 22px 20px;
  position: relative;
  transition: transform 0.2s, border-color 0.2s;
}
.mrn-card:hover { transform: translateY(-3px); border-color: var(--mrn-accent); }
.mrn-card__badge {
  display: inline-block; font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem; padding: 3px 8px; border-radius: 999px;
  background: rgba(16, 185, 129, 0.12); color: var(--mrn-accent);
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 10px;
}
.mrn-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.mrn-card p { color: var(--mrn-muted); font-size: 0.93rem; }

/* About */
.mrn-about { margin-top: 48px; padding: 28px; background: var(--mrn-surface); border: 1px solid var(--mrn-border); border-radius: var(--mrn-radius); }
.mrn-about h2 { font-size: 1.3rem; margin-bottom: 12px; }
.mrn-about p { color: var(--mrn-muted); margin-bottom: 20px; }
.mrn-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.mrn-fact {
  padding: 14px; background: rgba(252, 231, 231, 0.03); border-radius: 12px;
  font-size: 0.92rem;
}
.mrn-fact span { display: block; color: var(--mrn-muted); font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }

.mrn-footer { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--mrn-border); display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--mrn-muted); }

@media (max-width: 720px) {
  .mrn-shell { grid-template-columns: 1fr; }
  .mrn-drawer { position: static; height: auto; flex-direction: row; align-items: center; flex-wrap: wrap; gap: 18px; padding: 16px; }
  .mrn-drawer__logo { margin-bottom: 0; flex: 1 1 auto; }
  .mrn-drawer__nav { flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .mrn-drawer__footer { display: none; }
  .mrn-hero { grid-template-columns: 1fr; }
  .mrn-gauge-wrap { justify-self: end; }
}