/* ==========================================================================
   FangBuch — fang-buch.de
   Design direction: "Gewässer & Fangbuch" — freshwater depths + brass accent,
   bathymetric depth-contour signature, logbook-data mono labels.
   System fonts only. No external CDN/fonts/trackers.
   ========================================================================== */

:root {
  /* --- Palette: freshwater depth + brass license accent --- */
  --deep:   #0F3540;  /* deep water — dark sections, hero, footer */
  --deep-2: #0B2A33;  /* deeper — gradients, contour lines on dark */
  --water:  #2C7A8C;  /* mid-water teal — primary brand */
  --water-lt:#4E9DAE; /* lighter teal — links/hover on dark */
  --reed:   #5E8C6A;  /* reed green — nature secondary */
  --brass:  #C08A3E;  /* brass — CTAs, accents, highlights */
  --brass-lt:#D9A85C; /* brass hover */
  --mist:   #EEF3F2;  /* pale water-mist — page background */
  --mist-2: #E2EAE9;  /* slightly deeper mist — card edges/alt rows */
  --paper:  #FBFDFC;  /* near-white — cards */
  --ink:    #14201E;  /* primary text on light */
  --ink-2:  #3C4B48;  /* secondary text on light */
  --on-deep:#DCE8E8;  /* text on deep sections */
  --on-deep-2:#9DB4B6;/* secondary text on deep */

  /* --- Type: ONE family (system grotesk). Hierarchy comes from weight,
         size, letter-spacing and colour — not from switching typefaces. --- */
  --font-display: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* fluid type scale */
  --fs-hero: clamp(2.5rem, 6vw, 4.5rem);
  --fs-h2:   clamp(1.6rem, 3.2vw, 2.5rem);
  --fs-h3:   1.25rem;
  --fs-body: 1.0625rem;
  --fs-small: 0.875rem;
  --fs-label: 0.72rem;   /* mono eyebrow/data labels */

  /* --- Spacing / structure --- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --maxw: 1120px;
  --maxw-text: 68ch;
  --radius: 14px;
  --radius-sm: 8px;
  --border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  --shadow: 0 1px 2px rgba(15,53,64,.06), 0 8px 28px rgba(15,53,64,.08);
}

/* --- Base reset / defaults --- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--mist);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.08; letter-spacing: -0.02em; font-weight: 800; margin: 0; }
p { margin: 0 0 var(--space-2); }
a { color: var(--water); }
img, svg { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 3px solid var(--brass); outline-offset: 2px; border-radius: 3px; }

/* ==========================================================================
   Layout & components
   ========================================================================== */
.skip { position:absolute; left:-9999px; top:0; background:var(--brass); color:#1a1205;
  padding:.6rem 1rem; border-radius:0 0 var(--radius-sm) 0; font-family:var(--font-display); font-weight:700; z-index:10; }
.skip:focus { left:0; }

.wrap { width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:clamp(1.25rem,4vw,2.5rem); }

/* --- Header / nav (sits on the deep hero) --- */
.site-head { position:absolute; inset:0 0 auto 0; z-index:5; }
.head-inner { display:flex; align-items:center; justify-content:space-between; gap:1rem; padding-top:1.5rem; }
.brand { display:inline-flex; color:var(--on-deep); text-decoration:none; }
.logo { height:40px; width:auto; }
.logo-sm { height:34px; }
.nav { display:flex; align-items:center; gap:clamp(1rem,3vw,2rem); font-family:var(--font-display); font-weight:600; font-size:.95rem; }
.nav a { color:var(--on-deep); text-decoration:none; }
.nav a:hover { color:#fff; }
.nav-cta { border:1.5px solid color-mix(in srgb, var(--on-deep) 45%, transparent); padding:.4rem .9rem; border-radius:999px; }
.nav-cta:hover { border-color:var(--brass); color:var(--brass-lt) !important; }

/* --- Buttons --- */
.btn { display:inline-block; font-family:var(--font-display); font-weight:700; font-size:1rem;
  text-decoration:none; padding:.85rem 1.6rem; border-radius:999px; transition:transform .15s ease, background-color .15s ease, box-shadow .15s ease; }
.btn:hover { transform:translateY(-2px); }
.btn-brass { background:var(--brass); color:#1c1204; box-shadow:0 6px 20px rgba(192,138,62,.35); }
.btn-brass:hover { background:var(--brass-lt); }
.btn-ghost { color:var(--on-deep); border:1.5px solid color-mix(in srgb, var(--on-deep) 40%, transparent); }
.btn-ghost:hover { border-color:var(--water-lt); color:#fff; }

/* --- Hero --- */
.hero { position:relative; overflow:hidden; background:
    radial-gradient(120% 90% at 80% -10%, #174552 0%, var(--deep) 45%, var(--deep-2) 100%);
  color:var(--on-deep); padding:clamp(8rem,16vh,11rem) 0 clamp(4rem,10vh,7rem); }
.hero-contours { position:absolute; inset:0; width:100%; height:100%; opacity:.16; pointer-events:none; }
.hero-inner { position:relative; max-width:42rem; }
.eyebrow { font-family:var(--font-mono); font-size:var(--fs-label); letter-spacing:.18em; text-transform:uppercase;
  color:var(--water-lt); margin:0 0 1.1rem; }
.hero h1 { font-size:var(--fs-hero); color:#fff; margin:0 0 1.1rem; }
.lead { font-size:clamp(1.1rem,2vw,1.35rem); color:var(--on-deep); max-width:34rem; margin:0 0 2rem; }
.hero-actions { display:flex; flex-wrap:wrap; gap:1rem; }

/* --- Bands / sections --- */
.band { padding:clamp(3.5rem,9vh,6rem) 0; background:var(--mist); color:var(--ink); }
.band-alt { background:var(--mist-2); }
.band-deep { background:var(--deep); color:var(--on-deep); }
.section-label { font-family:var(--font-mono); font-size:var(--fs-label); letter-spacing:.18em; text-transform:uppercase;
  color:var(--water); margin:0 0 .8rem; }
.section-label.on-deep { color:var(--water-lt); }
.section-title { font-size:var(--fs-h2); color:inherit; margin:0 0 1.5rem; max-width:20ch; }
.band-deep .section-title { color:#fff; }

.intro { max-width:var(--maxw-text); }
.intro-text { font-size:clamp(1.15rem,2.2vw,1.45rem); line-height:1.6; color:var(--ink); }

/* --- Feature cards --- */
.cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:clamp(1rem,2vw,1.5rem); }
.card { background:var(--paper); border:var(--border); border-radius:var(--radius); padding:1.6rem 1.5rem;
  box-shadow:var(--shadow); border-top:3px solid var(--water); }
.card:nth-child(2){ border-top-color:var(--reed); }
.card:nth-child(3){ border-top-color:var(--brass); }
.card:nth-child(4){ border-top-color:var(--water-lt); }
.card-label { font-family:var(--font-mono); font-size:.68rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-2); margin:0 0 .7rem; }
.card h3 { font-size:var(--fs-h3); margin:0 0 .5rem; color:var(--ink); }
.card p { margin:0; color:var(--ink-2); font-size:1rem; line-height:1.55; }

/* --- Für Vereine / Kontakt --- */
.vereine, .contact { max-width:var(--maxw-text); }
.vereine-text, .contact-text { font-size:1.15rem; }
.band-deep .vereine-text { color:var(--on-deep); margin-bottom:1.8rem; }
.contact-mail { font-family:var(--font-display); font-size:clamp(1.4rem,3.5vw,2rem); font-weight:800; margin:.4rem 0 1.2rem; }
.contact-mail a { color:var(--water); text-decoration:none; border-bottom:2px solid color-mix(in srgb,var(--water) 40%,transparent); }
.contact-mail a:hover { color:var(--brass); border-color:var(--brass); }
.contact-op { font-size:var(--fs-small); color:var(--ink-2); }

/* --- Footer --- */
.site-foot { background:var(--deep-2); color:var(--on-deep-2); padding:clamp(2.5rem,6vh,4rem) 0; }
.foot-inner { display:flex; flex-direction:column; gap:1.2rem; align-items:flex-start; }
.foot-nav { display:flex; flex-wrap:wrap; gap:1.5rem; font-family:var(--font-display); font-weight:600; }
.foot-nav a { color:var(--on-deep); text-decoration:none; }
.foot-nav a:hover { color:var(--brass-lt); }
.foot-copy { font-size:var(--fs-small); margin:0; color:var(--on-deep-2); }

/* --- Legal / reader pages --- */
.legal { padding:clamp(6rem,12vh,8rem) 0 clamp(3rem,8vh,5rem); background:var(--mist); }
.legal .wrap { max-width:var(--maxw-text); }
.legal h1 { font-size:var(--fs-h2); margin:0 0 .4rem; color:var(--ink); }
.legal .stand { font-family:var(--font-mono); font-size:var(--fs-label); letter-spacing:.1em; text-transform:uppercase; color:var(--ink-2); margin:0 0 2rem; }
.legal h2 { font-size:1.3rem; margin:2.2rem 0 .6rem; color:var(--ink); }
.legal h3 { font-size:1.05rem; margin:1.4rem 0 .4rem; font-family:var(--font-display); }
.legal p, .legal li { color:var(--ink-2); }
.legal ul { padding-left:1.2rem; }
.legal a { color:var(--water); }
.legal .back { display:inline-block; margin-top:2.5rem; font-family:var(--font-display); font-weight:700; text-decoration:none; color:var(--water); }
.fill { background:#fbe9c6; color:#6b4a12; padding:.05em .35em; border-radius:4px; font-family:var(--font-mono); font-size:.85em; font-weight:600; }
.legal-note { background:var(--mist-2); border-left:3px solid var(--brass); padding:1rem 1.2rem; border-radius:0 var(--radius-sm) var(--radius-sm) 0; font-size:.95rem; margin:0 0 2rem; }

/* --- Responsive --- */
@media (max-width:640px) {
  .nav a:not(.nav-cta) { display:none; }
  .hero h1 { hyphens:auto; }
}

/* --- Slim top bar for legal pages (no hero) --- */
.topbar { background:var(--deep); padding:1.1rem 0; }
.topbar .brand { color:var(--on-deep); }