/* ============================================================
   schach.css — gemeinsame Styles & Komponenten für /schach/*
   ============================================================ */

:root {
  --bg: #f4ede0; --bg-soft: #faf6ee; --bg-dark: #3d342b;
  --ink: #2b241d; --ink-soft: #6b5f53; --rule: #d9cdb8;
  --schach: #efe6d8; --schach-deep: #d6c8a8;
  --schach-strong: #5a4a32; --schach-ink: #2e2618;
  --info-orange: #c47a3a;

  /* Brett — orientiert am User-Sketch */
  --sq-light: #f0d9b5;
  --sq-dark:  #b58863;
  --sq-hi:    #f7d774;
  --sq-move:  #8fc18f;
  --sq-cap:   #d97373;
  --board-frame: #6b4a28;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.15;
}
em, .it { font-style: italic; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.container.narrow { max-width: 880px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244,237,224,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
header.site .bar { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand-img { height: 28px; width: auto; display: block; object-fit: contain; }
@media (max-width: 560px) { .brand-img { height: 24px; } }
.brand { }
nav.main ul { display: flex; gap: 36px; list-style: none; font-size: 15px; align-items: center; }
nav.main a { color: var(--ink-soft); transition: color .2s; }
nav.main a:hover { color: var(--ink); }
nav.main a.active { color: var(--schach-strong); font-weight: 500; }
nav.main .nav-sep { width: 1px; height: 18px; background: var(--rule); align-self: center; margin: 0 4px; }
nav.main a.schach-link { display: inline-flex; align-items: center; gap: 6px; }
nav.main a.schach-link .ico {
  font-size: 21px; line-height: 1;
  color: var(--schach-ink);
  transform: translateY(-1px);
}

/* Hero */
.subject-hero {
  position: relative;
  padding: 70px 0 60px;
  background-color: var(--schach-ink);
  background-image: linear-gradient(180deg, rgba(40,30,20,0.55) 0%, rgba(40,30,20,0.85) 100%),
                    url('https://images.unsplash.com/photo-1528819622765-d6bcf132f793?w=1600&q=80&fit=crop&auto=format');
  background-size: cover;
  background-position: center;
  color: #fff;
}
.subject-hero h1 { font-size: clamp(36px, 5vw, 60px); color: #fff; margin-bottom: 12px; }
.subject-hero .lead { font-size: 17px; color: rgba(255,255,255,0.92); max-width: 65ch; }
.breadcrumb { font-size: 13px; margin-bottom: 18px; color: rgba(255,255,255,0.75); }
.breadcrumb a { color: rgba(255,255,255,0.75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { margin: 0 8px; opacity: 0.5; }

/* Stepper (Schach > Kategorie > Thema) */
.stepper {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  font-size: 13px; margin-bottom: 16px;
  color: rgba(255,255,255,0.85);
}
.stepper .st { padding: 4px 12px; border: 1px solid rgba(255,255,255,0.3); border-radius: 999px; }
.stepper .st.active { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.55); color: #fff; }
.stepper .st-arrow { opacity: 0.5; }

/* Sections */
.panel { padding: 60px 0 70px; }
.panel.alt { background: var(--bg-soft); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head .eyebrow {
  font-size: 12px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--schach-strong);
  font-weight: 600; margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(28px, 3.5vw, 40px); color: var(--schach-ink); margin-bottom: 14px; }
.section-head p { color: var(--ink-soft); font-size: 16px; max-width: 64ch; }

/* Prose */
.prose { max-width: 65ch; }
.prose p { margin-bottom: 16px; }
.prose p:last-child { margin-bottom: 0; }
.prose h3 { font-size: 26px; color: var(--schach-ink); margin: 36px 0 14px; }
.prose h4 { font-size: 20px; color: var(--schach-ink); margin: 26px 0 10px; }
.prose ul, .prose ol { margin: 0 0 18px 26px; }
.prose li { margin-bottom: 6px; }
.prose b, .prose strong { color: var(--schach-ink); }
.prose blockquote {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic; font-size: 22px;
  color: var(--schach-strong);
  border-left: 3px solid var(--schach-deep);
  padding: 6px 0 6px 22px;
  margin: 22px 0;
  line-height: 1.4;
}

/* Box-Komponenten */
.box {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 22px 26px;
  margin: 22px 0;
}
.box.tip      { background: #f5f0e0; border-color: var(--schach-deep); }
.box.warn     { background: #fdf2e0; border-color: #e3b87a; }
.box.fact     { background: #eef3fa; border-color: #b6cfee; }
.box .box-label {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 700; color: var(--schach-strong);
  margin-bottom: 8px; display: block;
}
.box.tip .box-label   { color: #8a6a3a; }
.box.warn .box-label  { color: #b8762a; }
.box.fact .box-label  { color: #4a6fa5; }

/* Karten-Listen wie auf der Hauptseite */
.classes-list { display: flex; flex-direction: column; gap: 14px; }
.class-card {
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 26px 32px;
  transition: transform .2s, box-shadow .25s, background .2s, border-color .2s;
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 24px;
  align-items: center;
  color: inherit;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.class-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent, var(--schach-strong));
  opacity: 0; transition: opacity .25s;
}
.class-card:hover {
  transform: translateX(4px);
  box-shadow: 0 14px 32px rgba(60,40,20,0.12);
  background: #fff;
  border-color: var(--schach-deep);
}
.class-card:hover::before { opacity: 1; }
.class-card .piece {
  flex-shrink: 0; width: 64px; height: 64px; border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent, var(--schach-strong));
  box-shadow: inset 0 -3px 0 rgba(0,0,0,0.05), 0 2px 8px rgba(60,40,20,0.18);
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
  color: var(--accent, var(--schach-strong));
  line-height: 1;
  transition: all .25s;
}
.class-card:hover .piece {
  background: var(--accent, var(--schach-strong));
  color: #fff;
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(60,40,20,0.30);
}
.class-card .body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.class-card .stage {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic; font-size: 13px;
  color: var(--accent, var(--schach-strong));
}
.class-card h4 { font-size: 26px; color: var(--schach-ink); line-height: 1.15; }
.class-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.55; margin-top: 4px; }
.class-card .elo {
  flex-shrink: 0;
  background: #fff;
  border: 1px solid var(--schach-deep);
  color: var(--schach-ink);
  font-family: 'Inter', sans-serif;
  font-size: 13px; font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  white-space: nowrap;
}

/* Akzentfarben */
.c-history   { --accent: #8a5a3a; }
.c-tech      { --accent: #4a6a8c; }
.c-einstieg  { --accent: #6b8a4a; }
.c-bauern    { --accent: #8a6a3a; }
.c-springer  { --accent: #7a5a8c; }
.c-laeufer   { --accent: #4a7a8c; }
.c-turm      { --accent: #8c5a3a; }
.c-damen     { --accent: #a04545; }
.c-meister   { --accent: #5a4a32; }
.c-grossm    { --accent: #2e2618; }
.c-anf       { --accent: #6b8a4a; }
.c-klassik   { --accent: #8a6a3a; }
.c-wm        { --accent: #a04545; }
.c-engine    { --accent: #4a6a8c; }
.c-eigene    { --accent: #5a4a32; }

/* ============== Schach-Brett ============== */
.board-wrap {
  display: inline-block;
  background: var(--board-frame);
  padding: 6px;
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(60,40,20,0.22);
  font-family: 'Inter', sans-serif;
}
.board {
  display: grid;
  grid-template-columns: repeat(8, var(--sq-size, 56px));
  grid-template-rows: repeat(8, var(--sq-size, 56px));
  gap: 0;
  border: 2px solid #4a3018;
}
.board .sq {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  user-select: none;
  transition: background .12s;
}
.board .sq.light { background: var(--sq-light); }
.board .sq.dark  { background: var(--sq-dark); }
.board .sq.hi    { background: var(--sq-hi) !important; }
.board .sq .piece-img {
  width: 88%; height: 88%;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
  filter: drop-shadow(0 1px 1.5px rgba(0,0,0,0.25));
}

/* Animations-Layer: liegt absolut über dem Brett */
.board { position: relative; }
.board .anim-piece {
  position: absolute;
  width: var(--sq-size, 56px);
  height: var(--sq-size, 56px);
  pointer-events: none;
  z-index: 5;
  display: flex; align-items: center; justify-content: center;
  transition: transform 480ms cubic-bezier(0.25, 0.8, 0.3, 1);
}
.board .anim-piece img {
  width: 88%; height: 88%;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.32));
}
.board .anim-piece.fade-out img {
  transition: opacity 220ms ease;
  opacity: 0;
}
.board .anim-piece.fade-in img {
  animation: fadeInPiece 240ms ease forwards;
}
@keyframes fadeInPiece {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: scale(1); }
}
.board .sq.anim-hidden .piece-img { visibility: hidden; }

/* Animation-Steuerleiste */
.anim-bar {
  display: flex; gap: 10px; align-items: center;
  margin: 14px 0 10px;
  flex-wrap: wrap;
}
.anim-bar .progress {
  flex: 1;
  height: 4px; min-width: 100px;
  background: var(--rule);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.anim-bar .progress > div {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: var(--schach-strong);
  width: 0%;
  transition: width 200ms linear;
}
.anim-caption {
  background: var(--bg-soft);
  border-left: 3px solid var(--schach-strong);
  padding: 12px 16px;
  margin-top: 12px;
  border-radius: 0 8px 8px 0;
  font-size: 14px; line-height: 1.55;
  min-height: 1.5em;
}
.anim-caption b { color: var(--schach-ink); }
.board .sq .dot {
  width: 26%; height: 26%;
  border-radius: 50%;
  background: rgba(40,60,30,0.45);
  pointer-events: none;
  position: absolute;
}
.board .sq .ring {
  position: absolute; inset: 6%;
  border: 4px solid rgba(170,40,40,0.65);
  border-radius: 50%;
  box-sizing: border-box;
  pointer-events: none;
}
.board .sq .coord {
  position: absolute; bottom: 1px; right: 3px;
  font-size: 9px; font-weight: 600; opacity: 0.55;
  pointer-events: none;
  letter-spacing: 0;
}
.board .sq.light .coord { color: #8a6a3a; }
.board .sq.dark  .coord { color: #f0d9b5; }
.board .sq .file-edge, .board .sq .rank-edge {
  position: absolute;
  font-size: 10px; font-weight: 700;
  pointer-events: none;
}
.board .sq .file-edge { bottom: 1px; right: 3px; }
.board .sq .rank-edge { top: 1px; left: 3px; }
.board .sq.light .file-edge, .board .sq.light .rank-edge { color: #8a6a3a; }
.board .sq.dark  .file-edge, .board .sq.dark  .rank-edge { color: #f0d9b5; }

/* Buttons & Steuerung */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  background: var(--schach-strong);
  color: #fff;
  border: none; border-radius: 999px;
  font: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s;
}
.btn:hover { background: var(--schach-ink); }
.btn:active { transform: translateY(1px); }
.btn.ghost {
  background: #fff; color: var(--schach-strong);
  border: 1px solid var(--schach-deep);
}
.btn.ghost:hover { background: var(--bg-soft); }

.ctrl-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 18px 0; }
.ctrl-row .label { font-size: 13px; color: var(--ink-soft); }
.ctrl-row .out {
  background: #fff; border: 1px solid var(--rule);
  border-radius: 8px; padding: 8px 14px;
  font-family: 'Inter', monospace;
  font-size: 14px;
}

/* Footer */
footer.site { background: var(--bg-dark); color: #c9bfae; padding: 50px 0 36px; font-size: 14px; margin-top: 40px; }
footer.site .row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
footer.site .links { display: flex; gap: 28px; }
footer.site a:hover { color: #fff; }

/* Two-col layout */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.two-col.brett { grid-template-columns: auto 1fr; }
@media (max-width: 880px) {
  .two-col, .two-col.brett { grid-template-columns: 1fr; gap: 28px; }
}

/* Mobile */
@media (max-width: 700px) {
  .class-card { grid-template-columns: 56px 1fr; padding: 22px; gap: 18px; }
  .class-card .piece { width: 56px; height: 56px; font-size: 30px; }
  .class-card .elo { grid-column: 1 / -1; justify-self: start; margin-top: 4px; }
  :root { --sq-size: 38px; }
}
@media (max-width: 560px) {
  nav.main { display: none; }
  .container { padding: 0 22px; }
  :root { --sq-size: 34px; }
}

/* Premium: Feedback fuer interaktive Figuren (Klick macht Spass) */
.board .sq.clickable { cursor: pointer; }
.board .sq.clickable .piece-img { transition: transform .13s ease, filter .13s ease; }
.board .sq.clickable:hover .piece-img {
  transform: translateY(-2px) scale(1.05);
  filter: drop-shadow(0 3px 5px rgba(0,0,0,.32));
}