/* ============================================================
   Daedalus — Official links / aviation references directory
   Loaded after styles.css. Curated outbound-link directory.
   ============================================================ */

.ref-hero {
  position: relative;
  padding: 76px 0 44px;
  border-bottom: 1px solid var(--border-subtle);
  background:
    radial-gradient(ellipse at 84% 16%, rgba(212,101,28,0.09), transparent 54%),
    radial-gradient(ellipse at 6% 96%, rgba(42,93,176,0.06), transparent 60%);
  overflow: hidden;
}
.ref-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(0deg, rgba(15,17,22,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,17,22,0.022) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse at center, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 78%);
}
.ref-hero-inner { position: relative; padding-inline: clamp(20px, 4vw, 48px); }
.ref-hero h1 {
  font-size: clamp(38px, 4.8vw, 56px);
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.06;
  margin-top: 12px; text-wrap: balance;
}
.ref-hero h1 em { font-style: italic; color: var(--brand-cyan); }
.ref-hero p {
  margin-top: 14px; font-size: 17px; color: var(--fg-2);
  max-width: 660px; line-height: 1.55; text-wrap: pretty;
}

.ref-search {
  margin-top: 26px; display: flex; gap: 10px; align-items: center;
  padding: 10px 14px 10px 18px; max-width: 560px;
  background: var(--surface-1); border: 1px solid var(--border-default);
  border-radius: var(--radius-pill); transition: border-color var(--dur-state) var(--ease-out);
}
.ref-search:focus-within { border-color: var(--border-cyan); box-shadow: 0 0 0 3px rgba(212,101,28,0.12); }
.ref-search svg { width: 16px; height: 16px; color: var(--fg-3); flex: none; }
.ref-search input {
  flex: 1; min-width: 0; background: transparent; border: 0; outline: 0;
  font-family: var(--font-sans); font-size: 15px; color: var(--fg-1);
}
.ref-search input::placeholder { color: var(--fg-4); }

.ref-meta {
  margin-top: 24px; display: flex; gap: 30px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fg-3);
}
.ref-meta strong { color: var(--fg-1); font-weight: 600; }

/* region filter chips */
.ref-filter { display: flex; gap: 7px; flex-wrap: wrap; margin: 26px 0 4px; }
.ref-fchip {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 7px 13px; border-radius: var(--radius-pill);
  border: 1px solid var(--border-default); background: var(--surface-1); color: var(--fg-2);
  cursor: pointer; transition: all var(--dur-state) var(--ease-out);
}
.ref-fchip:hover { border-color: var(--border-cyan); color: var(--fg-1); }
.ref-fchip.is-active { background: var(--brand-cyan); border-color: var(--brand-cyan); color: var(--fg-on-cyan, #fff); font-weight: 600; }

/* layout */
.ref-body { padding: 40px 0 90px; padding-inline: clamp(20px, 4vw, 48px); }
.ref-group { margin-bottom: 44px; scroll-margin-top: 90px; }
.ref-group-head {
  display: flex; align-items: center; gap: 14px; margin-bottom: 18px;
  padding-bottom: 12px; border-bottom: 1px solid var(--border-subtle);
}
.ref-group-ico {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: rgba(212,101,28,0.10); color: var(--brand-cyan);
  display: grid; place-items: center;
}
.ref-group-ico svg { width: 18px; height: 18px; }
.ref-group-h { font-size: 19px; font-weight: 700; letter-spacing: -0.015em; }
.ref-group-c { margin-left: auto; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--fg-4); }

.ref-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }

.ref-card {
  display: flex; flex-direction: column; gap: 7px;
  padding: 18px 20px;
  background: var(--surface-1); border: 1px solid var(--border-default);
  border-radius: var(--radius-lg); text-decoration: none;
  transition: all var(--dur-state) var(--ease-out);
}
.ref-card:hover { border-color: var(--border-cyan); box-shadow: var(--e1); transform: translateY(-1px); }
.ref-card-top { display: flex; align-items: center; gap: 10px; }
.ref-card-name { font-size: 15.5px; font-weight: 700; color: var(--fg-1); letter-spacing: -0.01em; }
.ref-region {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 4px; font-weight: 700; flex: none;
}
.ref-region.us { background: rgba(42,93,176,0.10); color: #2A5DB0; border: 1px solid rgba(42,93,176,0.25); }
.ref-region.eu { background: rgba(47,143,84,0.10); color: var(--state-success, #2F8F54); border: 1px solid rgba(47,143,84,0.28); }
.ref-region.intl { background: rgba(212,101,28,0.09); color: var(--brand-cyan); border: 1px solid rgba(212,101,28,0.26); }
.ref-arrow { margin-left: auto; color: var(--fg-4); flex: none; transition: all var(--dur-state) var(--ease-out); }
.ref-arrow svg { width: 15px; height: 15px; display: block; }
.ref-card:hover .ref-arrow { color: var(--brand-cyan); transform: translate(2px, -2px); }
.ref-card-desc { font-size: 13px; color: var(--fg-2); line-height: 1.5; }
.ref-card-host { font-family: var(--font-mono); font-size: 11px; color: var(--fg-4); letter-spacing: 0.02em; margin-top: 1px; }

.ref-empty {
  padding: 70px 24px; text-align: center; color: var(--fg-3);
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px dashed var(--border-subtle); border-radius: var(--radius-lg);
}

.ref-disc {
  margin-top: 10px; display: flex; gap: 14px; align-items: flex-start;
  background: var(--surface-1); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 18px 20px;
}
.ref-disc .ico { flex: none; width: 26px; height: 26px; border-radius: 7px; background: var(--surface-2); color: var(--fg-3); display: grid; place-items: center; }
.ref-disc .ico svg { width: 15px; height: 15px; }
.ref-disc p { margin: 0; font-size: 12.5px; color: var(--fg-3); line-height: 1.55; }
.ref-disc p strong { color: var(--fg-2); }

@media (max-width: 860px) {
  .ref-grid { grid-template-columns: 1fr; }
}