/* zeitgeist OS: schwarze Kopfzeile im zeitgeist-CI, helle Arbeitsfläche für Tabellen und Formulare. */
:root {
  --black: #0a0a0a; --white: #f2f2f2; --g1: #bdbdbd; --g2: #8a8a8a; --g3: #6e6e6e; --g4: #5c5c5c; --g5: #3a3a3a; --gline: #2a2a2a;
  --bg: #f2f2f2; --panel: #ffffff; --ink: #0a0a0a; --muted: #6e6e6e; --line: #e0e0e0; --soft: #ececec;
  --accent: #0a0a0a; --accent-ink: #f2f2f2;
  --good: #1f6d46; --good-bg: #e3f1e9; --warn: #8a5300; --warn-bg: #fbf0db; --bad: #a3312a; --bad-bg: #f9e6e4;
  --font: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121212; --panel: #1b1b1b; --ink: #f2f2f2; --muted: #9a9a9a; --line: #2c2c2c; --soft: #242424;
    --accent: #f2f2f2; --accent-ink: #0a0a0a;
    --good: #6fc79d; --good-bg: #17291f; --warn: #e3ad5c; --warn-bg: #2f2513; --bad: #ef8d85; --bad-bg: #351c1a;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121212; --panel: #1b1b1b; --ink: #f2f2f2; --muted: #9a9a9a; --line: #2c2c2c; --soft: #242424;
  --accent: #f2f2f2; --accent-ink: #0a0a0a;
  --good: #6fc79d; --good-bg: #17291f; --warn: #e3ad5c; --warn-bg: #2f2513; --bad: #ef8d85; --bad-bg: #351c1a;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; }

/* Kopfzeile */
.os-bar { position: sticky; top: 0; z-index: 20; background: var(--black); color: var(--white); border-bottom: 1px solid var(--gline); }
.os-bar .in { display: flex; align-items: center; gap: 14px; height: 56px; padding: 0 max(16px, env(safe-area-inset-left)); max-width: 1360px; margin: 0 auto; }
.os-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; flex: none; }
.os-logo img { height: 20px; width: auto; display: block; }
.os-logo span { font-size: 11px; font-weight: 800; letter-spacing: .2em; color: var(--g2); padding-left: 12px; border-left: 1px solid var(--g5); }
.os-nav { display: flex; gap: 2px; margin-left: 10px; overflow-x: auto; scrollbar-width: none; }
.os-nav a { color: var(--g1); text-decoration: none; font-weight: 600; font-size: 14px; padding: 7px 12px; border-radius: 999px; white-space: nowrap; }
.os-nav a:hover { color: var(--white); }
.os-nav a[aria-current="page"] { background: var(--white); color: var(--black); }
.os-sp { flex: 1; }
.os-menu { position: relative; flex: none; }
.os-menu > button { background: none; border: 1px solid var(--g5); color: var(--g1); width: 36px; height: 36px; border-radius: 999px; font: 700 13px var(--font); cursor: pointer; }
.os-menu > button:hover { color: var(--white); border-color: var(--g3); }
.os-menu .pop { position: absolute; right: 0; top: 44px; background: var(--panel); color: var(--ink); border: 1px solid var(--line); border-radius: 12px; min-width: 230px; padding: 6px; box-shadow: 0 18px 50px rgba(0,0,0,.25); display: none; }
.os-menu.open .pop { display: block; }
.os-menu .pop .who { font-size: 12px; color: var(--muted); padding: 8px 10px 6px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.os-menu .pop a, .os-menu .pop button { display: block; width: 100%; text-align: left; background: none; border: 0; font: 500 14px var(--font); color: var(--ink); padding: 8px 10px; border-radius: 8px; text-decoration: none; cursor: pointer; }
.os-menu .pop a:hover, .os-menu .pop button:hover { background: var(--soft); }

/* Seitenkopf im zeitgeist-Stil: Kicker, zweifarbige Headline */
.os-main { max-width: 1360px; margin: 0 auto; padding: 28px max(16px, env(safe-area-inset-left)) 64px; }
.kick { font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.headline { font-weight: 800; letter-spacing: -.04em; line-height: .98; margin: 0; font-size: clamp(32px, 5vw, 52px); }
.headline .m { color: var(--g2); }

/* Gemeinsame Bausteine */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 700 14px var(--font); padding: 0 16px; height: 38px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { opacity: .88; }
.btn:disabled { opacity: .5; cursor: default; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
#toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--black); color: var(--white); padding: 10px 18px; border-radius: 999px; display: none; max-width: 90vw; z-index: 50; font-size: 14px; font-weight: 600; box-shadow: 0 10px 30px rgba(0,0,0,.3); }

@media (max-width: 640px) {
  .os-logo span { display: none; }
  .os-nav { margin-left: 0; }
  .os-nav a { padding: 7px 10px; }
}
@media print { .os-bar, #toast { display: none !important; } .os-main { padding: 0; max-width: none; } }