/* ============================================================
   site.css — Designsystem: Tokens, Schriften, Navigation, Badges
   Gemeinsam für index.html, standalone.html, quellen.html, handbuch.html
   ============================================================ */

/* ── Schriften (lokal, DSGVO-konform) ── */
@font-face { font-family: 'Inter'; font-weight: 400 700; font-display: swap; src: url('../../presentation/fonts/inter.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: normal; font-weight: 400 900; font-display: swap; src: url('../../presentation/fonts/fraunces-normal.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: italic; font-weight: 400 900; font-display: swap; src: url('../../presentation/fonts/fraunces-italic.woff2') format('woff2'); }
@font-face { font-family: 'Space Grotesk'; font-weight: 300 700; font-display: swap; src: url('../../presentation/fonts/space-grotesk.woff2') format('woff2'); }
@font-face { font-family: 'Playfair Display'; font-weight: 400 900; font-display: swap; src: url('../../presentation/fonts/PlayfairDisplay-700.woff2') format('woff2'); }

:root {
  /* Farben */
  --ink:          #0d1626;
  --ink-2:        #1b2940;
  --primary:      #1f3fbf;
  --primary-dark: #162e8f;
  --primary-soft: #eef1fc;
  --accent:       #ff5a36;
  --paper:        #f6f5f1;
  --surface:      #ffffff;
  --line:         #e4e2db;
  --line-strong:  #cfccc2;
  --text:         #141a24;
  --muted:        #5b6371;
  --faint:        #8d929c;

  /* Score-Stufen */
  --s5: #0b6e4f;
  --s4: #2e9a6a;
  --s3: #d4880f;
  --s2: #c23b22;
  --star: #e5a50a;
  --star-off: #dedbd2;

  /* Typografie */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-ui:      'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-read:    Charter, 'Iowan Old Style', 'Source Serif Pro', Georgia, serif;
  --font-mono:    ui-monospace, 'SF Mono', 'Cascadia Mono', Consolas, 'Liberation Mono', monospace;

  /* Form */
  --radius:    10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(13,22,38,.06), 0 1px 1px rgba(13,22,38,.04);
  --shadow:    0 1px 2px rgba(13,22,38,.05), 0 8px 24px -8px rgba(13,22,38,.14);
  --shadow-lg: 0 24px 60px -20px rgba(13,22,38,.35);
  --topbar-h:  56px;

  /* Abgeleitete Rollen (pro Stil überschreibbar) */
  --heading:   var(--ink);
  --topbar-bg: rgba(13,22,38,.94);
  --hero-bg:   var(--ink);
  --code-bg:   #ecebe5;
  color-scheme: light;
}

/* ============================================================
   Stile — umschaltbar über <html data-theme="…"> (assets/theme.js)
   akademie (Standard) · klassik · nacht · labor · wald · minimal
   ============================================================ */

/* Klassik — Bordeaux, Creme, Gold; Playfair Display */
[data-theme="klassik"] {
  --ink: #2a1418; --ink-2: #4a2a2f;
  --primary: #7a1f2b; --primary-dark: #5c1520; --primary-soft: #f6e9e6;
  --accent: #b8892b;
  --paper: #f8f3ea; --surface: #fffdf8; --line: #e8dfd0; --line-strong: #d4c7b2;
  --text: #2a2220; --muted: #6f625a; --faint: #9a8d84;
  --font-display: 'Playfair Display', Georgia, serif;
  --topbar-bg: rgba(42,20,24,.95); --hero-bg: #2a1418; --code-bg: #efe6d6;
  --star: #b8892b;
}

/* Nacht — Dunkelmodus */
[data-theme="nacht"] {
  --ink: #05080f; --ink-2: #c9d3e6; --heading: #f1f4fa;
  --primary: #7c9cff; --primary-dark: #a8bcff; --primary-soft: rgba(124,156,255,.12);
  --accent: #ff7a59;
  --paper: #0b1019; --surface: #131a27; --line: #222c3d; --line-strong: #33405a;
  --text: #dbe2ee; --muted: #9aa5b8; --faint: #6c778b;
  --star-off: #2c3648;
  --topbar-bg: rgba(5,8,15,.92); --hero-bg: #05080f; --code-bg: #1d2638;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 24px -8px rgba(0,0,0,.6);
  --shadow-lg: 0 24px 60px -20px rgba(0,0,0,.8);
  color-scheme: dark;
}
[data-theme="nacht"] .badge:not(.badge-cited) { filter: brightness(1.75) saturate(.85); }
[data-theme="nacht"] .badge-austria .ic { filter: brightness(.6); }
[data-theme="nacht"] .filter-btn.active { background: var(--primary) !important; border-color: var(--primary) !important; color: #0b1019 !important; }
[data-theme="nacht"] .card.primary { color: #0b1019; }
[data-theme="nacht"] .card.primary h2, [data-theme="nacht"] .card.primary .card-go { color: #0b1019 !important; }
[data-theme="nacht"] .card.primary p, [data-theme="nacht"] .card.primary .card-num { color: rgba(11,16,25,.7) !important; }

/* Labor — technisch, Space Grotesk, Schwarz & Elektroblau */
[data-theme="labor"] {
  --ink: #0a0a0a; --ink-2: #262626;
  --primary: #0055ff; --primary-dark: #0040c2; --primary-soft: #e8efff;
  --accent: #00c37a;
  --paper: #f2f2f0; --surface: #ffffff; --line: #e2e2df; --line-strong: #c9c9c4;
  --text: #121212; --muted: #5c5c5c; --faint: #8c8c8c;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-ui: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-read: 'Inter', system-ui, sans-serif;
  --radius: 4px; --radius-sm: 3px;
  --topbar-bg: rgba(10,10,10,.95); --hero-bg: #0a0a0a; --code-bg: #e8e8e4;
}

/* Wald — Tannengrün & Ocker */
[data-theme="wald"] {
  --ink: #10241b; --ink-2: #29443a;
  --primary: #1f6b4f; --primary-dark: #15523b; --primary-soft: #e6f1ec;
  --accent: #d9921f;
  --paper: #f3f3ec; --surface: #fdfdf8; --line: #e1e2d6; --line-strong: #c8cbb9;
  --text: #1b2620; --muted: #5d6a62; --faint: #8b968f;
  --topbar-bg: rgba(16,36,27,.95); --hero-bg: #10241b; --code-bg: #e8e9de;
}

/* Minimal — Schwarz-Weiß, ein Akzent */
[data-theme="minimal"] {
  --ink: #111111; --ink-2: #333333;
  --primary: #111111; --primary-dark: #000000; --primary-soft: #f1f1f1;
  --accent: #e5484d;
  --paper: #ffffff; --surface: #ffffff; --line: #ebebeb; --line-strong: #d4d4d4;
  --text: #1a1a1a; --muted: #6b6b6b; --faint: #9b9b9b;
  --font-display: 'Inter', system-ui, sans-serif;
  --shadow-sm: none; --shadow: 0 0 0 1px rgba(0,0,0,.04); --shadow-lg: 0 20px 50px -20px rgba(0,0,0,.25);
  --topbar-bg: rgba(17,17,17,.96); --hero-bg: #111111; --code-bg: #f1f1f1;
}
[data-theme="minimal"] .paper-header h1, [data-theme="minimal"] .page-head h1, [data-theme="minimal"] .hero h1 { letter-spacing: -.04em; font-weight: 700; }

/* ── Stil-Umschalter ── */
.theme-switch { position: relative; }
.theme-btn {
  display: inline-flex; align-items: center; gap: .45rem; height: 32px; padding: 0 .65rem;
  border-radius: 8px; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.8); font: 500 .76rem var(--font-ui); cursor: pointer; transition: background .15s, color .15s;
}
.theme-btn:hover { background: rgba(255,255,255,.12); color: #fff; }
.theme-btn .ic { width: 15px; height: 15px; }
.theme-menu {
  position: absolute; right: 0; top: calc(100% + 10px); width: 300px; z-index: 900;
  background: #fff; color: #141a24; border: 1px solid #e4e2db; border-radius: 12px; padding: .45rem;
  box-shadow: 0 24px 60px -20px rgba(13,22,38,.45); display: none; font-family: 'Inter', system-ui, sans-serif;
}
.theme-switch.open .theme-menu { display: block; }
.theme-menu .tm-head { font: 600 .62rem/1 ui-monospace, Consolas, monospace; letter-spacing: .14em; text-transform: uppercase; color: #8d929c; padding: .55rem .6rem .5rem; }
.theme-opt {
  display: grid; grid-template-columns: 46px 1fr 16px; align-items: center; gap: .7rem; width: 100%;
  padding: .5rem .6rem; border: 0; background: none; border-radius: 8px; cursor: pointer; text-align: left; color: inherit;
}
.theme-opt:hover { background: #f4f3ef; }
.theme-opt .sw { display: flex; height: 26px; border-radius: 6px; overflow: hidden; box-shadow: inset 0 0 0 1px rgba(0,0,0,.08); }
.theme-opt .sw i { flex: 1; }
.theme-opt .tn { font-size: .82rem; font-weight: 600; line-height: 1.2; }
.theme-opt .td { display: block; font-size: .7rem; font-weight: 400; color: #6b7280; }
.theme-opt .tick { color: #1f3fbf; opacity: 0; }
.theme-opt.active .tick { opacity: 1; }
.theme-opt.active { background: #f4f3ef; }
@media (max-width: 860px) { .theme-btn .tb-label { display: none; } }

/* ── Icons ── */
.ic { width: 1.15em; height: 1.15em; flex-shrink: 0; vertical-align: -0.2em; display: inline-block; }
[data-icon] { display: inline-flex; align-items: center; }

/* ── Kicker / Labels ── */
.kicker {
  font-family: var(--font-mono); font-size: .72rem; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}
.kicker .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: .55em; vertical-align: .12em; }

/* ── Topbar ── */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 800;
  height: var(--topbar-h);
  background: var(--topbar-bg);
  -webkit-backdrop-filter: saturate(140%) blur(12px); backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
  font-family: var(--font-ui);
}
.topbar-inner {
  max-width: 1240px; height: 100%; margin: 0 auto; padding: 0 1.25rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.topbar .brand {
  display: flex; align-items: center; gap: .65rem; min-width: 0; flex: 1;
  color: #fff; text-decoration: none;
}
.topbar .brand-mark {
  width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0;
  background: var(--primary); display: grid; place-items: center; color: #fff;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.12);
}
.topbar .brand-mark .ic { width: 16px; height: 16px; }
.topbar .brand-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.15; }
.topbar .brand-title {
  font-size: .84rem; font-weight: 600; color: #fff;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.topbar .brand-sub { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.45); }
.topbar nav { display: flex; align-items: center; gap: .15rem; }
.topbar nav a, .topbar .tb-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .45rem .7rem; border-radius: 7px;
  font-size: .8rem; font-weight: 500; color: rgba(255,255,255,.72);
  text-decoration: none; background: none; border: 0; cursor: pointer; font-family: inherit;
  transition: color .15s, background .15s; position: relative; white-space: nowrap;
}
.topbar nav a:hover, .topbar .tb-btn:hover { color: #fff; background: rgba(255,255,255,.07); }
.topbar nav a.active { color: #fff; }
.topbar nav a.active::after {
  content: ''; position: absolute; left: .7rem; right: .7rem; bottom: -9px; height: 2px;
  background: var(--accent); border-radius: 2px;
}
.topbar .tb-tools { display: flex; align-items: center; gap: .1rem; padding-left: .9rem; margin-left: .3rem; border-left: 1px solid rgba(255,255,255,.1); }
.topbar .tb-btn { padding: .45rem .55rem; }
.topbar .tb-btn .tb-label { display: none; }
.topbar .progress {
  position: absolute; left: 0; bottom: -1px; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--accent), #ff9a3d);
  transition: width .1s linear;
}

/* Tooltip für Icon-Buttons */
[data-tip] { position: relative; }
[data-tip]:hover::before {
  content: attr(data-tip); position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; font: 500 .7rem/1 var(--font-ui); padding: .45rem .6rem; border-radius: 6px;
  white-space: nowrap; pointer-events: none; box-shadow: var(--shadow); border: 1px solid rgba(255,255,255,.08); z-index: 10;
}

@media (max-width: 860px) {
  .topbar nav a .nav-label { display: none; }
  .topbar .brand-sub { display: none; }
}
@media (max-width: 520px) {
  .topbar .brand-text { display: none; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .6rem 1rem; border-radius: var(--radius-sm); border: 1px solid transparent;
  font: 600 .84rem/1.2 var(--font-ui); cursor: pointer; text-decoration: none;
  transition: background .15s, border-color .15s, color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--text); }
.btn:disabled { opacity: .5; cursor: default; }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  font: 500 .68rem/1 var(--font-ui); letter-spacing: .01em;
  padding: .28rem .5rem .28rem .42rem; border-radius: 999px; white-space: nowrap;
  color: var(--muted);
  background: color-mix(in srgb, currentColor 8%, transparent);
  border: 1px solid color-mix(in srgb, currentColor 24%, transparent);
}
.badge .ic { width: 12px; height: 12px; vertical-align: 0; }
.badge-peer        { color: #0b6e4f; }
.badge-institution { color: #1f3fbf; }
.badge-book        { color: #6b3fa0; }
.badge-preprint    { color: #b8650a; }
.badge-web         { color: #5b6371; }
.badge-austria     { color: #b00e29; }
.badge-austria .ic { width: 14px; }
.badge-openaccess  { color: #0b7a6e; }
.badge-paywall     { color: #a8323e; }
.badge-math        { color: #1f3fbf; }
.badge-empirical   { color: #0e7490; }
.badge-review      { color: #6d28d9; }
.badge-theory      { color: #b45309; }
.badge-practice    { color: #3f7d20; }
.badge-technology  { color: #1d4ed8; }
.badge-background  { color: #57534e; }
.badge-age         { color: #374151; }
.badge-cited       { color: #fff; background: var(--primary); border-color: var(--primary); font-weight: 600; }

/* ── Sterne ── */
.stars { display: inline-flex; align-items: center; gap: 1px; white-space: nowrap; }
.stars .ic { width: 14px; height: 14px; vertical-align: 0; }
.stars .on  { color: var(--star); fill: var(--star); }
.stars .off { color: var(--star-off); fill: var(--star-off); }
.score-num { font: 600 .7rem/1 var(--font-mono); color: var(--muted); margin-left: .4rem; }

/* ── Footer ── */
.site-footer {
  max-width: 1240px; margin: 4rem auto 0; padding: 1.5rem 1.25rem 2.5rem;
  border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font: 400 .74rem/1.5 var(--font-ui); color: var(--faint);
}
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--primary); }

/* ── Druck ── */
@media print {
  .topbar, .no-print { display: none !important; }
  body { padding-top: 0 !important; }
}