/* ============================================
   IRON KEEL STUDIO — Design System
   Dark steel hull · Warm cream thread · Sonar green glow
   ============================================ */

:root {
  /* Core palette */
  --steel-deep: #0a0f14;
  --steel: #0f1419;
  --steel-raised: #141b23;
  --steel-border: #2a3540;
  --steel-rule: #1c2530;

  --cream: #d9cfb5;
  --cream-bright: #e6dcc2;
  --cream-muted: #a49a83;
  --cream-faint: #867d66;

  --sonar: #4fb3a0;
  --sonar-bright: #6dc9b8;
  --sonar-dim: rgba(79, 179, 160, 0.15);
  --sonar-glow: rgba(79, 179, 160, 0.4);

  /* Typography stacks */
  --font-display: 'Cinzel', 'Trajan Pro', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container: 1200px;
  --container-narrow: 900px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--steel-deep);
  color: var(--cream);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle steel-grain texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.04;
  mix-blend-mode: overlay;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--sonar);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--sonar-bright); }
a:focus-visible {
  outline: 2px solid var(--sonar);
  outline-offset: 3px;
  border-radius: 2px;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--sonar);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--sonar);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--cream-bright);
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 4.5rem);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-6);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

h4 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sonar);
  margin-bottom: var(--space-3);
}

p {
  margin-bottom: var(--space-4);
  max-width: 65ch;
}
p:last-child { margin-bottom: 0; }

.lede {
  font-size: 1.15rem;
  color: var(--cream);
  line-height: 1.7;
}

.mono { font-family: var(--font-mono); }

/* ============================================
   LAYOUT PRIMITIVES
   ============================================ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-24) 0;
  position: relative;
}
.section--tight { padding: var(--space-16) 0; }

.section--raised {
  background: var(--steel);
  border-top: 1px solid var(--steel-border);
  border-bottom: 1px solid var(--steel-border);
}

/* Dashed technical-drawing rule */
.rule-dashed {
  border-top: 1px dashed var(--steel-border);
  margin: var(--space-8) 0;
  position: relative;
}
.rule-dashed::before,
.rule-dashed::after {
  content: '';
  position: absolute;
  top: -3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--sonar);
  opacity: 0.6;
}
.rule-dashed::before { left: 0; }
.rule-dashed::after { right: 0; }

/* ============================================
   NAV
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--steel-border);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.nav__brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}
.nav__brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cream-bright);
}

.nav__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin-left: auto;
  align-items: center;
}

.nav__link {
  color: var(--cream-muted);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
}
.nav__link:hover { color: var(--cream-bright); }
.nav__link.active { color: var(--cream-bright); }
.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--sonar);
}

.nav__cta {
  margin-left: var(--space-4);
}

.nav__toggle {
  display: none;
  padding: var(--space-2);
  color: var(--cream);
  margin-left: auto;
}
.nav__toggle svg { width: 28px; height: 28px; }

@media (max-width: 860px) {
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--steel);
    border-bottom: 1px solid var(--steel-border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4);
    gap: 0;
  }
  .nav__links.open { display: flex; }
  .nav__link {
    padding: var(--space-4) var(--space-2);
    border-bottom: 1px solid var(--steel-rule);
  }
  .nav__link:last-child { border-bottom: none; }
  .nav__cta { margin-left: 0; margin-top: var(--space-2); }
  .nav__toggle { display: block; }
  .nav__brand-text { font-size: 0.85rem; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--sonar);
  color: var(--sonar);
  background: transparent;
  transition: all 0.25s var(--ease);
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover {
  background: var(--sonar-dim);
  color: var(--sonar-bright);
  box-shadow: 0 0 24px var(--sonar-glow);
  transform: translateY(-1px);
}
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--sonar-glow);
}

.btn--primary {
  background: var(--sonar);
  color: var(--steel-deep);
  border-color: var(--sonar);
}
.btn--primary:hover {
  background: var(--sonar-bright);
  color: var(--steel-deep);
}

.btn--small {
  padding: var(--space-3) var(--space-4);
  font-size: 0.7rem;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--sonar);
  padding: var(--space-2) 0;
  border-bottom: 1px solid transparent;
  transition: all 0.2s var(--ease);
}
.btn-link:hover {
  color: var(--sonar-bright);
  border-bottom-color: var(--sonar-bright);
  gap: var(--space-3);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: var(--space-24) 0 var(--space-16);
  background:
    linear-gradient(180deg, rgba(10, 15, 20, 0.55) 0%, rgba(10, 15, 20, 0.82) 60%, rgba(10, 15, 20, 0.95) 100%),
    radial-gradient(ellipse at 30% 20%, rgba(79, 179, 160, 0.12), transparent 60%),
    url('assets/heroshotsub.jpg') center/cover no-repeat,
    linear-gradient(180deg, var(--steel-deep) 0%, #070b0f 100%);
  overflow: hidden;
}

/* Sonar sweep backdrop (pure CSS, subtle) */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -20%;
  width: 900px;
  height: 900px;
  transform: translateY(-50%);
  background: radial-gradient(circle at center, transparent 40%, var(--sonar-dim) 41%, transparent 42%, transparent 60%, var(--sonar-dim) 61%, transparent 62%, transparent 80%, var(--sonar-dim) 81%, transparent 82%);
  opacity: 0.3;
  pointer-events: none;
  animation: sonar-pulse 6s ease-in-out infinite;
}

@keyframes sonar-pulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.45; }
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 840px;
}

.hero__sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--cream-muted);
  margin: var(--space-4) 0 var(--space-6);
  letter-spacing: 0.04em;
}

.hero__intro {
  font-size: 1.1rem;
  color: var(--cream);
  max-width: 60ch;
  margin-bottom: var(--space-8);
}

.hero__ctas {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  flex-wrap: wrap;
}

/* Status pill — "In development" etc. */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--sonar);
  color: var(--sonar);
  background: var(--sonar-dim);
  border-radius: 999px;
}
.pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sonar);
  box-shadow: 0 0 8px var(--sonar);
  animation: ping 2s ease-in-out infinite;
}

@keyframes ping {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ============================================
   FLEET CARDS
   ============================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.card {
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  padding: var(--space-6);
  position: relative;
  transition: all 0.25s var(--ease);
  display: flex;
  flex-direction: column;
}
.card:hover {
  border-color: var(--sonar);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--sonar-dim);
}

/* Rivets on the card corners */
.card::before, .card::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--steel-border);
  box-shadow: inset 0 1px 1px rgba(0,0,0,0.5);
}
.card::before { top: 8px; left: 8px; }
.card::after { top: 8px; right: 8px; }

.card__image {
  aspect-ratio: 16 / 10;
  background: var(--steel-deep);
  border: 1px solid var(--steel-rule);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cream-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  overflow: hidden;
}
.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cream-faint);
  margin-bottom: var(--space-2);
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cream-bright);
  margin-bottom: var(--space-3);
}
.card__desc {
  color: var(--cream-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-4);
  flex-grow: 1;
}
.card__status {
  margin-top: auto;
}

/* ============================================
   SPLIT SECTION (text + image)
   ============================================ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.split__image {
  aspect-ratio: 4 / 3;
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cream-faint);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}
.split__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* Corner rivets on split image */
.split__image::before,
.split__image::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(42, 53, 64, 0.8);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.6);
  z-index: 2;
}
.split__image::before { top: 12px; left: 12px; }
.split__image::after { bottom: 12px; right: 12px; }

/* ============================================
   EMAIL CAPTURE
   ============================================ */
.capture {
  background: linear-gradient(180deg, var(--steel) 0%, var(--steel-deep) 100%);
  border-top: 1px solid var(--steel-border);
  border-bottom: 1px solid var(--steel-border);
  padding: var(--space-24) 0;
  position: relative;
  text-align: center;
}
.capture::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 1px;
  background: var(--sonar);
}

.capture__inner {
  max-width: 640px;
  margin: 0 auto;
}
.capture h2 { text-align: center; }
.capture p { margin-left: auto; margin-right: auto; text-align: center; }

.form-row {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}
.form-row input[type="email"] {
  flex: 1;
  background: var(--steel-deep);
  border: 1px solid var(--steel-border);
  color: var(--cream);
  padding: var(--space-4) var(--space-4);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: border-color 0.2s var(--ease);
}
.form-row input[type="email"]:focus {
  outline: none;
  border-color: var(--sonar);
  box-shadow: 0 0 0 1px var(--sonar);
}
.form-row input[type="email"]::placeholder {
  color: var(--cream-faint);
}

.form-note {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cream-faint);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: var(--space-6);
}

/* Optional "leave a message" disclosure inside notify forms */
.form-extra {
  margin: var(--space-4) auto 0;
  max-width: 480px;
  text-align: left;
}
.form-extra summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cream-muted);
  padding: var(--space-2) 0;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color 0.2s var(--ease);
  user-select: none;
}
.form-extra summary::-webkit-details-marker,
.form-extra summary::marker { display: none; }
.form-extra summary::before {
  content: '+';
  color: var(--sonar);
  font-size: 1rem;
  font-weight: 500;
  transition: transform 0.2s var(--ease);
  display: inline-block;
  width: 0.8em;
}
.form-extra[open] summary::before { content: '\2013'; }
.form-extra summary:hover { color: var(--sonar); }
.form-extra summary:focus-visible {
  outline: 2px solid var(--sonar);
  outline-offset: 2px;
}
.form-extra .form-optional {
  color: var(--cream-faint);
  font-weight: 400;
  margin-left: var(--space-1);
}
.form-extra textarea {
  width: 100%;
  margin-top: var(--space-3);
  background: var(--steel-deep);
  border: 1px solid var(--steel-border);
  color: var(--cream);
  padding: var(--space-4);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.55;
  min-height: 110px;
  resize: vertical;
  transition: border-color 0.2s var(--ease);
}
.form-extra textarea:focus {
  outline: none;
  border-color: var(--sonar);
  box-shadow: 0 0 0 1px var(--sonar);
}
.form-extra textarea::placeholder {
  color: var(--cream-faint);
}

.form-success,
.form-error {
  display: none;
  margin-top: var(--space-6);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  border: 1px solid var(--sonar);
  color: var(--sonar);
  background: var(--sonar-dim);
}
.form-error {
  border-color: #b85c5c;
  color: #d88a8a;
  background: rgba(184, 92, 92, 0.1);
}
.form-success.visible, .form-error.visible { display: block; }

@media (max-width: 640px) {
  .form-row { flex-direction: column; }
}

/* ============================================
   SPEC TABLE (Keel Core)
   ============================================ */
.specs {
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  border-left: 3px solid var(--sonar);
  padding: var(--space-8);
  margin: var(--space-8) 0;
}
.specs h4 { margin-bottom: var(--space-6); }
.specs__table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.specs__table td {
  padding: var(--space-3) 0;
  border-bottom: 1px dashed var(--steel-rule);
  vertical-align: top;
}
.specs__table td:first-child {
  color: var(--cream-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.75rem;
  width: 45%;
  padding-right: var(--space-4);
}
.specs__table td:last-child {
  color: var(--cream-bright);
  text-align: right;
}
.specs__table tr:last-child td { border-bottom: none; }

/* ============================================
   FIELD NOTES (Keel Core lessons)
   ============================================ */
.notes {
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  padding: var(--space-8);
  font-family: var(--font-mono);
  margin: var(--space-8) 0;
  position: relative;
}
.notes::before {
  content: 'FIELD NOTES';
  position: absolute;
  top: -10px;
  left: var(--space-6);
  background: var(--steel-deep);
  padding: 0 var(--space-3);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--sonar);
}
.notes ul {
  list-style: none;
  padding: 0;
}
.notes li {
  padding: var(--space-3) 0;
  border-bottom: 1px dashed var(--steel-rule);
  color: var(--cream);
  font-size: 0.9rem;
  line-height: 1.6;
  padding-left: var(--space-6);
  position: relative;
}
.notes li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--sonar);
}
.notes li:last-child { border-bottom: none; }

/* ============================================
   KEEL CORE DIAGRAM (3-step visual)
   ============================================ */
.method {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin: var(--space-12) 0;
}
@media (max-width: 860px) {
  .method { grid-template-columns: 1fr; }
}

.method__step {
  padding: var(--space-8);
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  position: relative;
}
.method__num {
  position: absolute;
  top: -16px;
  left: var(--space-6);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--steel-deep);
  border: 1px solid var(--sonar);
  color: var(--sonar);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--steel-deep);
  border-top: 1px solid var(--steel-border);
  padding: var(--space-12) 0 var(--space-8);
  color: var(--cream-faint);
  font-size: 0.85rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-8);
  align-items: center;
}
@media (max-width: 640px) {
  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-4);
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.footer__brand img { width: 36px; height: 36px; }
.footer__brand-text {
  font-family: var(--font-display);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cream-muted);
  font-size: 0.8rem;
}

.footer__copy {
  color: var(--cream-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-align: center;
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.footer__links a { color: var(--cream-muted); }
.footer__links a:hover { color: var(--sonar); }

/* ============================================
   PAGE HERO (inner pages)
   ============================================ */
.page-hero {
  padding: var(--space-24) 0 var(--space-12);
  background:
    radial-gradient(ellipse at 20% 50%, rgba(79, 179, 160, 0.06), transparent 60%),
    linear-gradient(180deg, var(--steel-deep), var(--steel));
  border-bottom: 1px solid var(--steel-border);
  position: relative;
  overflow: hidden;
}

/* Photo-backed page heroes — darker overlay so text stays readable */
.page-hero--photo {
  background:
    linear-gradient(180deg, rgba(10, 15, 20, 0.72) 0%, rgba(10, 15, 20, 0.92) 100%),
    radial-gradient(ellipse at 20% 50%, rgba(79, 179, 160, 0.1), transparent 60%),
    linear-gradient(180deg, var(--steel-deep), var(--steel));
  background-size: cover;
  background-position: center;
}
.page-hero--fleet { background-image:
    linear-gradient(180deg, rgba(10, 15, 20, 0.72) 0%, rgba(10, 15, 20, 0.92) 100%),
    url('assets/lasubheroshot.jpg'); }
.page-hero--about { background-image:
    linear-gradient(180deg, rgba(10, 15, 20, 0.72) 0%, rgba(10, 15, 20, 0.92) 100%),
    url('assets/icesub.jpg'); }
.page-hero--log { background-image:
    linear-gradient(180deg, rgba(10, 15, 20, 0.72) 0%, rgba(10, 15, 20, 0.92) 100%),
    url('assets/forwardviewsub.jpg'); }
.page-hero--photo { background-size: cover; background-position: center; background-repeat: no-repeat; min-height: 340px; display: flex; align-items: center; }

/* ============================================
   FLEET PAGE PROJECT BLOCKS
   ============================================ */
.project {
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--steel-rule);
}
.project:last-child { border-bottom: none; }

.project__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.project__gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.project__gallery .thumb {
  aspect-ratio: 1 / 1;
  background: var(--steel-raised);
  border: 1px solid var(--steel-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cream-faint);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}
.project__gallery .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s var(--ease);
}
.project__gallery .thumb:has(img):hover {
  border-color: var(--sonar);
}
.project__gallery .thumb:has(img):hover img {
  transform: scale(1.04);
}

/* ============================================
   FAQ
   ============================================ */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--steel-border);
  background: var(--steel-raised);
  margin-bottom: var(--space-3);
  transition: border-color 0.2s var(--ease);
}
.faq__item[open] {
  border-color: var(--sonar);
}

.faq__item summary {
  padding: var(--space-5) var(--space-16) var(--space-5) var(--space-6);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--cream-bright);
  list-style: none;
  position: relative;
  transition: color 0.2s var(--ease);
  user-select: none;
}
.faq__item summary::-webkit-details-marker,
.faq__item summary::marker { display: none; }

.faq__item summary::after {
  content: '';
  position: absolute;
  right: var(--space-6);
  top: 50%;
  width: 14px;
  height: 14px;
  border-right: 1px solid var(--sonar);
  border-bottom: 1px solid var(--sonar);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.25s var(--ease);
}
.faq__item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}
.faq__item summary:hover { color: var(--sonar); }
.faq__item summary:focus-visible {
  outline: 2px solid var(--sonar);
  outline-offset: -2px;
}

.faq__body {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--cream);
  line-height: 1.7;
  border-top: 1px dashed var(--steel-rule);
  padding-top: var(--space-5);
  margin-top: var(--space-1);
}
.faq__body p {
  margin-bottom: var(--space-3);
  max-width: none;
}
.faq__body p:last-child { margin-bottom: 0; }
.faq__body a { border-bottom: 1px dashed var(--sonar); }

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}