/* Konzept A · Präzision — Dossier / Split-Screen.
   Nüchtern, analytisch, beweisorientiert. Feste Identitäts-Spalte links, gescrolltes Dossier rechts.
   Regel: Farben ausschließlich über Tokens (kein hardcoded Hex außerhalb :root / [data-theme]). */

:root {
  --gold: #b8860b;
  --gold-soft: #d8a53a;

  --paper: #ffffff;
  --paper-alt: #f4f3f0;
  --ink: #121211;
  --ink-soft: #55534e;
  --line: #e3e1db;

  --panel: #121211;
  --panel-alt: #1b1a18;
  --panel-text: #f4f3f0;
  --panel-muted: #a7a49c;
  --panel-line: #33312c;

  --danger: #c0392b;
  --ok: #2f8a4e;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --sidebar-w: 22rem;
  --space: 1rem;
  --space-lg: 2.5rem;
  --ease: .35s cubic-bezier(.22, .61, .36, 1);
}

[data-theme="dark"] {
  --paper: #0d0d0c;
  --paper-alt: #161613;
  --ink: #f1f0ec;
  --ink-soft: #b3b0a7;
  --line: #2a2925;
  --panel: #080807;
  --panel-alt: #121210;
  --panel-line: #2c2a25;
  color-scheme: dark;
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body.concept-a {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--ease); }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; line-height: 1.12; }

.skip-link {
  position: absolute; left: var(--space); top: -100%;
  background: var(--ink); color: var(--paper);
  padding: .5rem .9rem; font-size: .8rem; z-index: 50;
}
.skip-link:focus { top: .5rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Layout ---------- */
.dossier { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }

/* ---------- Identitäts-Spalte ---------- */
.identity {
  position: sticky; top: 0; align-self: start;
  height: 100vh; overflow-y: auto;
  display: flex; flex-direction: column; gap: 1.75rem;
  padding: 2rem 1.75rem;
  background: var(--panel); color: var(--panel-text);
  border-right: 1px solid var(--panel-line);
}
.identity-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.id-logo { height: 2.4rem; width: auto; }
.id-file {
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--panel-muted); text-align: right;
}
.id-portrait { position: relative; overflow: hidden; border: 1px solid var(--panel-line); }
.id-portrait img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; filter: grayscale(1) contrast(1.02); }
.id-portrait::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(18, 18, 17, .55) 100%);
  pointer-events: none;
}
.id-name h1 { font-size: 1.7rem; color: var(--panel-text); }
.id-role {
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--gold); margin-top: .3rem;
}

.id-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--panel-line); border: 1px solid var(--panel-line); }
.id-stats > div { background: var(--panel); padding: .7rem .8rem; }
.id-stats dt {
  font-family: var(--font-mono); font-size: .58rem; letter-spacing: .09em;
  text-transform: uppercase; color: var(--panel-muted); line-height: 1.3;
}
.id-stats dd { font-family: var(--font-display); font-size: 1.5rem; color: var(--panel-text); margin-top: .15rem; }

.id-index { display: flex; flex-direction: column; gap: .1rem; margin-top: auto; }
.id-index a {
  display: flex; align-items: baseline; gap: .7rem;
  padding: .45rem 0; font-size: .9rem; color: var(--panel-muted);
  border-bottom: 1px solid var(--panel-line);
}
.id-index a:last-child { border-bottom: 0; }
.id-index .ix-num { font-family: var(--font-mono); font-size: .68rem; color: var(--gold); min-width: 1.4rem; }
.id-index a:hover { color: var(--panel-text); }
.id-index a.active { color: var(--panel-text); }
.id-index a.active .ix-num { color: var(--gold-soft); }

.id-foot { display: flex; flex-direction: column; gap: .55rem; padding-top: .5rem; }
.lang-switcher { display: flex; align-items: center; }
.lang-select {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
  background: transparent; color: var(--panel-muted);
  border: 1px solid var(--panel-line); border-radius: 2px;
  padding: .3rem 1.6rem .3rem .5rem; cursor: pointer;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--panel-muted) 50%), linear-gradient(135deg, var(--panel-muted) 50%, transparent 50%);
  background-position: right .7rem center, right .5rem center;
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.lang-select:focus { outline: none; border-color: var(--gold); color: var(--panel-text); }
.id-mail, .id-tel { font-family: var(--font-mono); font-size: .78rem; color: var(--panel-muted); }
.id-mail:hover, .id-tel:hover { color: var(--gold); }

/* ---------- Inhalt / Dossier ---------- */
.content { max-width: 56rem; padding: 4.5rem clamp(1.5rem, 5vw, 4rem) 4rem; }

.c-hero { padding-bottom: 3.5rem; border-bottom: 1px solid var(--line); margin-bottom: 3.5rem; }
.c-kicker {
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 1.4rem;
}
.c-lede { font-size: clamp(2.1rem, 5.2vw, 3.6rem); letter-spacing: -.01em; color: var(--ink); }
.c-lede em { font-style: italic; color: var(--gold); }
.c-sub { max-width: 42rem; margin-top: 1.6rem; font-size: 1.05rem; color: var(--ink-soft); }
.c-sub span { display: block; }
.c-sub span + span { margin-top: .4rem; }

.c-cta {
  display: inline-block; margin-top: 2rem;
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--paper); background: var(--ink);
  padding: .85rem 1.9rem; border: 1px solid var(--ink);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.c-cta:hover { background: var(--gold); border-color: var(--gold); color: var(--panel); }

.c-block { padding: 2.5rem 0; border-bottom: 1px solid var(--line); }
.c-block:last-of-type { border-bottom: 0; }
.c-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1.6rem; }
.c-idx { font-family: var(--font-mono); font-size: .82rem; color: var(--gold); letter-spacing: .05em; }
.c-head h3 { font-size: clamp(1.5rem, 3vw, 2rem); color: var(--ink); }

.c-body p { color: var(--ink-soft); max-width: 44rem; }
.c-body p + p { margin-top: 1rem; }

.c-list { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.c-list article { background: var(--paper); padding: 1.5rem; }
.c-list h4 { font-size: 1.15rem; color: var(--ink); margin-bottom: .5rem; }
.c-list h4::before { content: ""; display: inline-block; width: .75rem; height: 1px; background: var(--gold); vertical-align: middle; margin-right: .55rem; }
.c-list p { font-size: .95rem; color: var(--ink-soft); }

.c-timeline { display: flex; flex-direction: column; gap: 1.6rem; padding-left: 1.5rem; border-left: 1px solid var(--gold); }
.c-role { position: relative; }
.c-role::before { content: ""; position: absolute; left: calc(-1.5rem - 4px); top: .55rem; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.c-role h4 { font-size: 1.2rem; color: var(--ink); }
.c-role > span { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--gold); }
.c-role p { margin-top: .5rem; font-size: .95rem; color: var(--ink-soft); }

.c-quotes { display: flex; flex-direction: column; gap: 1.4rem; }
.c-quotes blockquote {
  font-family: var(--font-display); font-size: 1.15rem; font-style: italic; line-height: 1.55;
  color: var(--ink); padding: 1.2rem 1.4rem; background: var(--paper-alt);
  border-left: 3px solid var(--gold);
}

/* ---------- Kontaktformular ---------- */
.c-contact { max-width: 40rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.1rem; }
.form-group { display: flex; flex-direction: column; }
.form-group label {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-soft); margin-bottom: .4rem;
}
.form-group input, .form-group textarea {
  font-family: var(--font-sans); font-size: 1rem; color: var(--ink);
  background: var(--paper-alt); border: 1px solid var(--line);
  padding: .75rem .85rem; transition: border-color var(--ease);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--gold); }
.form-group textarea { min-height: 8rem; resize: vertical; }
.form-group input.error, .form-group textarea.error { border-color: var(--danger); }
.form-error { display: none; margin-top: .3rem; font-size: .78rem; color: var(--danger); }
.form-error.visible { display: block; }
.form-success {
  display: none; margin-top: .3rem; padding: .8rem 1rem; font-size: .92rem;
  color: var(--ok); border: 1px solid var(--ok); background: color-mix(in srgb, var(--ok) 10%, transparent);
}
.form-success.visible { display: block; }
.c-contact .c-cta { border: none; }

.c-foot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem;
  margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: .74rem; letter-spacing: .05em; color: var(--ink-soft);
}
.c-foot a:hover { color: var(--gold); }

/* ---------- Reveal (Klassen setzt engine.js) ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsiv ---------- */
@media (max-width: 900px) {
  .dossier { grid-template-columns: 1fr; }
  .identity {
    position: static; height: auto; overflow: visible;
    flex-direction: row; flex-wrap: wrap; align-items: center; gap: 1.25rem;
    border-right: 0; border-bottom: 1px solid var(--panel-line);
  }
  .identity-top { order: 0; flex: 1 1 100%; }
  .id-portrait { width: 6rem; flex: 0 0 auto; }
  .id-portrait img { aspect-ratio: 1 / 1; }
  .id-name { flex: 1 1 12rem; }
  .id-stats { flex: 1 1 100%; grid-template-columns: repeat(4, 1fr); }
  .id-index { flex: 1 1 100%; flex-direction: row; flex-wrap: wrap; gap: .4rem 1.2rem; margin-top: 0; }
  .id-index a { border-bottom: 0; padding: .2rem 0; }
  .id-foot { flex: 1 1 100%; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 1rem; }
  .content { padding-top: 3rem; }
}
@media (max-width: 560px) {
  .id-stats { grid-template-columns: 1fr 1fr; }
  .c-list article { padding: 1.2rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}