*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #0a1110;
  --panel: rgba(15, 27, 25, 0.78);
  --text: #e6dfcf;
  --muted: #b6ae9c;
  --accent: #bfa46a;
  --border: rgba(191, 164, 106, 0.28);
  --shadow: rgba(0, 0, 0, 0.60);
  --link: rgba(209, 187, 134, 0.95);
  --font-sans: "Spectral", Georgia, "Times New Roman", serif;
}

html { text-rendering: optimizeLegibility; }
h1, h2, h3 { letter-spacing: -0.02em; }

body {
  margin: 0;
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--text);
  background:
    radial-gradient(900px 600px at 50% 18%, rgba(24,40,38,0.95) 0%, rgba(10,17,16,1) 62%),
    radial-gradient(1200px 900px at 50% 110%, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0) 60%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0 0 2.25rem;
}

.container {
  width: min(780px, calc(100% - 1.5rem));
  margin: 1.1rem auto 0;
  text-align: center;
  background-color: rgba(15,27,25,0.78);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Cg fill='none' stroke='rgba(191,164,106,0.03)' stroke-width='1'%3E%3Cpath d='M0.5 0.5H79.5V79.5H0.5Z'/%3E%3Cpath d='M0.5 0.5L79.5 79.5M79.5 0.5L0.5 79.5'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 92px 92px;
  background-position: center 38%;
  background-repeat: repeat;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3.5rem 2.75rem;
  box-shadow:
    0 26px 70px rgba(0,0,0,0.60),
    0 0 0 1px rgba(191,164,106,0.08),
    0 0 80px rgba(191,164,106,0.06);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.container::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 500px at 50% 18%, rgba(255,255,255,0.07) 0%, rgba(0,0,0,0) 55%),
    radial-gradient(900px 700px at 50% 120%, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0) 55%);
  pointer-events: none;
  z-index: 0;
}

.container::after {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.03), transparent 38%),
    radial-gradient(circle at 70% 35%, rgba(255,255,255,0.02), transparent 44%),
    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.015), transparent 55%),
    radial-gradient(circle at center,
      rgba(191,164,106,0.095) 0%,
      rgba(191,164,106,0.075) 20%,
      rgba(191,164,106,0.045) 26%,
      transparent 34%),
    linear-gradient(45deg,
      transparent 47.5%,
      rgba(191,164,106,0.065) 49%,
      rgba(191,164,106,0.065) 51%,
      transparent 52.5%),
    linear-gradient(-45deg,
      transparent 47.5%,
      rgba(191,164,106,0.065) 49%,
      rgba(191,164,106,0.065) 51%,
      transparent 52.5%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.95;
}

.container > * { position: relative; z-index: 1; }

.logo-mount {
  width: min(680px, 100%);
  height: 260px;
  margin: 0 auto 1.05rem auto;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid rgba(191,164,106,0.55);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(0,0,0,0.10));
  box-shadow: 0 14px 34px rgba(0,0,0,0.42);
  position: relative;
  overflow: hidden;
}

.logo-mount::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 12px;
  border: 1px solid rgba(191,164,106,0.22);
  pointer-events: none;
}

.logo {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  border-radius: 12px;
  background: rgba(230,223,207,0.06);
}

h1 {
  margin: 0 0 0.35rem 0;
  font-family: "Libre Baskerville", serif;
  font-variant: small-caps;
  letter-spacing: 0.09em;
}

.subtitle {
  margin: 0 auto 1.1rem;
  color: rgba(230,223,207,0.72);
  font-size: 0.98rem;
  max-width: 64ch;
  line-height: 1.6;
}

.rule {
  width: 140px;
  height: 2px;
  margin: 1.1rem auto 1.6rem auto;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.85;
}

.guide {
  text-align: left;
  max-width: 680px;
  margin: 0 auto;
}

.guide h2 {
  margin: 2.1rem 0 0.85rem;
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-align: left;
}

.guide p {
  margin: 0 0 1.15rem;
  max-width: none;
  font-size: 1.02rem;
  line-height: 1.72;
  color: rgba(230,223,207,0.88);
  text-align: left;
}

.guide a,
.sources a {
  color: rgba(209,187,134,0.9);
  text-decoration: none;
  border-bottom: 1px solid rgba(191,164,106,0.35);
}

.guide a:hover,
.sources a:hover { border-bottom-color: rgba(191,164,106,0.65); }

.note {
  margin: 0.15rem 0 0;
  font-size: 0.96rem;
  color: var(--muted);
}

.facts {
  margin-top: 0.25rem;
  border: 1px solid rgba(191,164,106,0.22);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(10,17,16,0.18);
  box-shadow: 0 10px 24px rgba(0,0,0,0.28);
}

.fact-row {
  display: grid;
  grid-template-columns: 1fr 1.55fr;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-top: 1px solid rgba(191,164,106,0.14);
}
.fact-row:first-child { border-top: none; }
.fact-label { color: rgba(230,223,207,0.70); font-size: 0.93rem; }
.fact-value { color: rgba(230,223,207,0.90); font-size: 0.98rem; }

.mini-badge {
  display: inline-block;
  margin-top: 0.85rem;
  padding: 0.32rem 0.55rem;
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  border: 1px solid rgba(191,164,106,0.28);
  color: rgba(230,223,207,0.78);
  border-radius: 10px;
  opacity: 0.92;
}

.sources {
  margin: 0;
  padding-left: 1.05rem;
  padding-bottom: 2rem;
  color: rgba(230,223,207,0.86);
}
.sources li { margin: 0.35rem 0; }

.secondary-nav {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.secondary-nav a {
  display: inline-block;
  padding: 0.38rem 0.7rem;
  font-size: 0.85rem;
  color: var(--link);
  text-decoration: none;
  border: 1px solid rgba(191,164,106,0.35);
  border-radius: 9px;
  background: transparent;
}
.secondary-nav a:hover { border-color: rgba(191,164,106,0.65); }

.about-link {
  margin-top: 2.4rem;
  font-size: 0.9rem;
  color: var(--muted);
  text-align: center;
}

footer {
  margin-top: 2.8rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: rgba(230,223,207,0.72);
  max-width: 74ch;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.flags-footer {
  display: block;
  width: 108px;
  height: auto;
  margin: 1.1rem auto -0.2rem;
  opacity: 0.42;
  filter: saturate(0.85) contrast(0.95) brightness(0.95);
  pointer-events: none;
}

.copyright { font-size: 0.72rem; opacity: 0.55; margin-top: 1.2rem; }

.ask-gpt {
  background: transparent;
  border: 1px solid rgba(191,164,106,0.6);
  color: #bfa46a;
  padding: 0.7rem 1.2rem;
  font-family: "Libre Baskerville", serif;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.ask-gpt:hover { background: rgba(191,164,106,0.08); border-color: #bfa46a; }

.gpt-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 9999;
}
.gpt-modal.show { opacity: 1; pointer-events: auto; }
.gpt-modal-content {
  background: #0a1110;
  border: 1px solid rgba(191,164,106,0.6);
  padding: 2rem;
  max-width: 420px;
  text-align: center;
  font-family: "Spectral", serif;
  color: #bfa46a;
}
.gpt-modal-title { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 1rem; }
.gpt-modal-text { font-size: 0.9rem; margin-bottom: 1.5rem; color: rgba(191,164,106,0.8); }
.gpt-modal-actions button {
  background: transparent;
  border: 1px solid rgba(191,164,106,0.6);
  color: #bfa46a;
  padding: 0.6rem 1.2rem;
  margin: 0 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.gpt-modal-actions button:hover { background: rgba(191,164,106,0.1); }

@media (max-width: 520px) {
  .container {
    width: calc(100% - 1.5rem);
    margin: 1.05rem auto 0;
    padding: 1.9rem 1.25rem;
    border-radius: 14px;
    background-size: 54px 54px;
  }
  .logo-mount { width: 100%; height: 180px; padding: 8px; margin-bottom: 0.85rem; border-radius: 14px; }
  .logo-mount::after { inset: 6px; border-radius: 11px; }
  .logo { border-radius: 11px; }
  h1 { font-size: 1.75rem; letter-spacing: 0.4px; margin-bottom: 0.25rem; }
  .rule { width: 110px; margin: 0.9rem auto 1.25rem auto; }
  .fact-row { grid-template-columns: 1fr; gap: 0.35rem; }
  .secondary-nav { flex-direction: column; align-items: stretch; }
  .secondary-nav a { text-align: center; }
  footer { margin-top: 1.8rem; font-size: 0.78rem; }
  .flags-footer { width: 92px; margin: 0.9rem auto 0; opacity: 0.35; }
}

@media (prefers-reduced-motion: reduce) {
  .ask-gpt, .sources a, .guide a { transition: none; }
}


/* Aquitania sectional drawings + viewport-aware lightbox */
    .cutaway-section{
      max-width:680px;
      margin:1.35rem auto 1.9rem;
      border:1px solid rgba(191,164,106,0.22);
      border-radius:18px;
      overflow:hidden;
      background:rgba(0,0,0,0.14);
      backdrop-filter:blur(2px);
      -webkit-backdrop-filter:blur(2px);
      box-shadow:0 10px 24px rgba(0,0,0,0.32);
    }

    .cutaway-header{ padding:1.2rem 1.15rem 0.3rem; }
    .cutaway-header h2{ margin:0 0 0.65rem; max-width:none; }
    .cutaway-header p{
      max-width:none;
      margin:0 0 1rem;
      color:rgba(230,223,207,0.88);
    }

    .cutaway-grid{
      display:grid;
      grid-template-columns:1fr;
      gap:1rem;
      padding:0 1.15rem 1.2rem;
    }

    .cutaway-card{
      margin:0;
      border:1px solid rgba(191,164,106,0.18);
      border-radius:16px;
      overflow:hidden;
      background:rgba(191,164,106,0.04);
      box-shadow:0 8px 22px rgba(0,0,0,0.28);
    }

    .cutaway-media{
      position:relative;
      background:#d8cfbf;
      border-bottom:1px solid rgba(191,164,106,0.14);
      overflow:hidden;
    }

    .cutaway-media::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(255,255,255,0.04), rgba(0,0,0,0.08)),
        radial-gradient(circle at 50% 8%, rgba(255,255,255,0.10), transparent 42%);
      pointer-events:none;
    }

    .cutaway-media img{ display:block; width:100%; height:auto; }
    .cutaway-body{ padding:0.95rem 1rem 1rem; }
    .cutaway-kicker{
      display:inline-block;
      margin:0 0 0.35rem;
      font-size:0.74rem;
      letter-spacing:0.12em;
      text-transform:uppercase;
      color:rgba(191,164,106,0.9);
    }
    .cutaway-body h3{
      margin:0 0 0.45rem;
      max-width:none;
      font-size:1.04rem;
      color:var(--text);
    }
    .cutaway-body p{
      max-width:none;
      margin:0;
      color:rgba(230,223,207,0.86);
      line-height:1.62;
      font-size:0.98rem;
    }
    .cutaway-note{
      margin:0 1.15rem 1.15rem;
      padding:0.95rem 1rem;
      border:1px solid rgba(191,164,106,0.22);
      border-radius:14px;
      background:rgba(191,164,106,0.06);
      color:rgba(230,223,207,0.9);
    }
    .cutaway-note p{ max-width:none; margin:0; font-size:0.96rem; }

    .cutaway-trigger{
      display:block;
      width:100%;
      padding:0;
      margin:0;
      border:none;
      background:none;
      cursor:zoom-in;
      text-align:inherit;
      font:inherit;
      color:inherit;
    }
    .cutaway-trigger:focus-visible{
      outline:2px solid rgba(191,164,106,0.9);
      outline-offset:-2px;
    }
    .cutaway-trigger .cutaway-media{
      transition:transform 0.22s ease, filter 0.22s ease;
    }
    .cutaway-trigger:hover .cutaway-media{
      transform:scale(1.01);
      filter:brightness(1.03);
    }
    .cutaway-trigger .cutaway-media::before{
      content:"Click to enlarge";
      position:absolute;
      right:0.9rem;
      bottom:0.9rem;
      z-index:3;
      padding:0.38rem 0.62rem;
      border-radius:999px;
      border:1px solid rgba(191,164,106,0.35);
      background:rgba(10,17,16,0.72);
      color:rgba(230,223,207,0.92);
      font-size:0.72rem;
      letter-spacing:0.08em;
      text-transform:uppercase;
      opacity:0;
      transform:translateY(4px);
      transition:opacity 0.18s ease, transform 0.18s ease;
      pointer-events:none;
      backdrop-filter:blur(2px);
      -webkit-backdrop-filter:blur(2px);
    }
    .cutaway-trigger:hover .cutaway-media::before,
    .cutaway-trigger:focus-visible .cutaway-media::before{
      opacity:1;
      transform:translateY(0);
    }

    .lightbox{
      position:fixed;
      inset:0;
      z-index:9999;
      display:flex;
      align-items:center;
      justify-content:center;
      width:100%;
      height:100vh;
      height:100dvh;
      padding:max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
      background:rgba(3,8,8,0.92);
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      transition:opacity 0.2s ease, visibility 0.2s ease;
      overscroll-behavior:contain;
    }
    .lightbox.is-open{ opacity:1; visibility:visible; pointer-events:auto; }
    .lightbox-dialog{
      position:relative;
      width:min(1400px, 100%);
      max-width:100%;
      max-height:calc(100dvh - 2rem);
      display:flex;
      align-items:center;
      justify-content:center;
    }
    .lightbox-img{
      display:block;
      max-width:100%;
      max-height:calc(100vh - 2rem);
      max-height:calc(100dvh - 2rem);
      width:auto;
      height:auto;
      object-fit:contain;
      border-radius:14px;
      border:1px solid rgba(191,164,106,0.28);
      box-shadow:0 30px 90px rgba(0,0,0,0.55);
      background:#111;
    }
    .lightbox-close{
      position:absolute;
      top:0.35rem;
      right:0.35rem;
      z-index:2;
      width:44px;
      height:44px;
      border-radius:999px;
      cursor:pointer;
      font-size:1.35rem;
      line-height:1;
      color:var(--text);
      background:rgba(10,17,16,0.88);
      border:1px solid rgba(191,164,106,0.32);
      box-shadow:0 10px 24px rgba(0,0,0,0.35);
    }
    .lightbox-close:hover{ background:rgba(191,164,106,0.14); }
    body.lightbox-open{ overflow:hidden; touch-action:none; }

    @media (max-width:520px){
      .cutaway-header{ padding:1rem 0.9rem 0.2rem; }
      .cutaway-grid{ padding:0 0.9rem 1rem; }
      .cutaway-body{ padding:0.9rem 0.9rem 0.95rem; }
      .cutaway-note{ margin:0 0.9rem 1rem; }
      .lightbox{ padding:max(0.75rem, env(safe-area-inset-top)) max(0.75rem, env(safe-area-inset-right)) max(0.75rem, env(safe-area-inset-bottom)) max(0.75rem, env(safe-area-inset-left)); }
      .lightbox-dialog{ max-height:calc(100dvh - 1.5rem); }
      .lightbox-img{
        max-height:calc(100vh - 1.5rem);
        max-height:calc(100dvh - 1.5rem);
        border-radius:10px;
      }
      .cutaway-trigger .cutaway-media::before{
        opacity:1;
        transform:none;
        font-size:0.68rem;
        padding:0.34rem 0.56rem;
      }
    }

    @media print{
      .cutaway-trigger{ cursor:default; }
      .cutaway-trigger .cutaway-media::before,
      .lightbox{ display:none !important; }
    }

/* Britannic cutaway width preservation */
.britannic-guide .cutaway-section{max-width:860px;}

/* Normandie cutaway width preservation */
.normandie-guide .cutaway-section{max-width:860px;}