/* Praxis Re-Design — Design Tokens */
:root {
  /* Color — neutrals (warm-cool balanced, slight cool tint) */
  --ink: #0a0a0b;
  --ink-2: #1a1a1d;
  --ink-3: #4a4a52;
  --ink-4: #8a8a92;
  --rule: #e5e5ea;
  --rule-2: #ededf1;
  --paper: #ffffff;
  --paper-2: #fafaf8;
  --paper-3: #f3f2ee;

  /* Accent — Praxis red (kept from existing brand pfeil) */
  --red: #d92525;
  --red-2: #b91c1c;
  --red-ink: #5a0e0e;

  /* Typography */
  --serif: "Tiempos Headline", "Source Serif Pro", "Charter", Georgia, serif;
  --sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Type scale */
  --t-display: clamp(56px, 7.5vw, 132px);
  --t-h1: clamp(40px, 5vw, 72px);
  --t-h2: clamp(28px, 3vw, 44px);
  --t-h3: 22px;
  --t-body: 17px;
  --t-small: 14px;
  --t-eyebrow: 11px;

  /* Spacing */
  --gap: 24px;
  --pad: 64px;
  --pad-lg: 120px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: var(--t-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

.eyebrow {
  font-family: var(--mono);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.serif { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }
.sans-tight { font-family: var(--sans); font-weight: 500; letter-spacing: -0.02em; }

.rule { height: 1px; background: var(--rule); border: 0; margin: 0; }
.rule-thick { height: 1px; background: var(--ink); border: 0; margin: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-family: var(--sans); font-size: 14px; font-weight: 500; letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--red); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-red { background: var(--red); color: var(--paper); }
.btn-red:hover { background: var(--red-2); }

.arrow::after { content: "→"; display: inline-block; transition: transform 0.2s ease; }
.btn:hover .arrow::after, a:hover .arrow::after { transform: translateX(4px); }

/* Praxis arrow mark (svg-rendered logo) */
.mark {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--sans); font-weight: 600; letter-spacing: -0.01em; font-size: 18px;
}
.mark-glyph {
  width: 28px; height: 28px; background: var(--ink); color: var(--red);
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 4px; font-weight: 700; font-size: 18px; line-height: 1;
}
.mark-glyph::before { content: "↗"; }

/* Layout helpers */
.container { max-width: 1440px; margin: 0 auto; padding: 0 var(--pad); }
.container-tight { max-width: 1200px; margin: 0 auto; padding: 0 var(--pad); }

/* Tables / index lists */
.idx-row {
  display: grid; grid-template-columns: 64px 1fr auto auto; gap: 24px;
  padding: 24px 0; border-top: 1px solid var(--rule);
  align-items: center;
  transition: background 0.15s ease;
}
.idx-row:hover { background: var(--paper-2); }
.idx-row .num { font-family: var(--mono); font-size: 12px; color: var(--ink-4); }
.idx-row .name { font-family: var(--serif); font-size: 28px; letter-spacing: -0.02em; }
.idx-row .meta { font-family: var(--mono); font-size: 12px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; }
.idx-row .arr { font-size: 22px; color: var(--ink-4); transition: all 0.2s ease; }
.idx-row:hover .arr { color: var(--red); transform: translateX(4px); }

/* ============================================================
   Responsive system
   ============================================================ */

/* Container — fluid padding */
.container { padding: 0 32px; }
@media (min-width: 768px)  { .container { padding: 0 48px; } }
@media (min-width: 1100px) { .container { padding: 0 64px; } }
@media (min-width: 1440px) { .container { padding: 0 64px; } }

/* Generic responsive grids — use these classes in JSX */

/* Hero A: headline | side */
.hero-a-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  align-items: end;
  gap: 64px;
}
.hero-a-side { padding-bottom: 12px; }

/* 2-col split (image+text, contact) */
.split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
}
.split-2-center { align-items: center; }
.split-2-start  { align-items: start; }

/* asymmetric splits */
.split-12 { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; align-items: start; }
.split-13 { display: grid; grid-template-columns: 1fr 1.6fr; gap: 64px; align-items: end; }
.split-14 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; align-items: center; }
.split-12-dark { display: grid; grid-template-columns: 1.2fr 1fr; gap: 64px; align-items: center; }

/* 3-col + 4-col card grids */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; }

/* Section head — title + filters */
.section-head {
  display: flex; justify-content: space-between; align-items: end;
  gap: 32px; flex-wrap: wrap; margin-bottom: 56px;
}

/* TopNav */
.topnav-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 24px;
}
.topnav-links { display: flex; gap: 32px; align-items: center; }
.topnav-cta   { display: flex; gap: 12px; align-items: center; }
.topnav-burger { display: none; background: transparent; border: 0; padding: 8px; cursor: pointer; color: inherit; }
.topnav-burger svg { display: block; }
.topnav-mobile {
  display: none;
  border-top: 1px solid var(--rule);
  padding: 16px 0 24px;
}
.topnav-mobile.open { display: block; }
.topnav-mobile a { display: block; padding: 12px 0; font-size: 17px; }

/* Footer */
.footer-cols { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 64px; padding-bottom: 64px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-bottom .links { display: flex; gap: 24px; flex-wrap: wrap; }

/* idx-row — already grid; collapse on small */
.idx-row {
  display: grid; grid-template-columns: 64px 1fr auto auto; gap: 24px;
}

/* idx-row name should not overflow */
.idx-row .name { word-break: break-word; }

/* ============== BREAKPOINTS ============== */

/* Tablet — 1024px and below */
@media (max-width: 1024px) {
  :root {
    --pad-lg: 96px;
    --pad: 56px;
    --t-display: clamp(48px, 8vw, 96px);
    --t-h1: clamp(36px, 5.5vw, 60px);
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .topnav-links a { font-size: 13px; }
  .topnav-links { gap: 24px; }
}

/* Tablet narrow — 900px */
@media (max-width: 900px) {
  .hero-a-grid { grid-template-columns: 1fr; gap: 40px; align-items: start; }
  .hero-a-side { max-width: 560px; padding-bottom: 0; }
  .split-2, .split-12, .split-13, .split-14, .split-12-dark {
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
  }
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 48px; }
}

/* Mobile — 720px */
@media (max-width: 720px) {
  :root {
    --pad-lg: 72px;
    --pad: 40px;
    --t-display: clamp(40px, 11vw, 64px);
    --t-h1: clamp(32px, 8vw, 48px);
    --t-h2: clamp(24px, 6vw, 34px);
  }
  .container { padding: 0 24px; }

  /* Nav: hide desktop links, show burger */
  .topnav-links { display: none; }
  .topnav-cta .lang { display: none; }
  .topnav-burger { display: block; }

  /* Layout collapse */
  .grid-3 { grid-template-columns: 1fr; gap: 32px; }
  .grid-4 { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-cols { grid-template-columns: 1fr; gap: 40px; padding-bottom: 48px; }

  /* Section head wraps cleanly */
  .section-head { gap: 24px; }

  /* idx-row — stack code/desc, hide secondary meta */
  .idx-row { grid-template-columns: 36px 1fr auto; gap: 16px; padding: 20px 0; }
  .idx-row .meta { display: none; }
  .idx-row .name { font-size: 22px; }

  /* Buttons wrap */
  .btn { padding: 12px 18px; font-size: 13px; }

  /* Footer bottom */
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-bottom .links { gap: 16px; }
}

/* Very small — 420px */
@media (max-width: 420px) {
  .container { padding: 0 20px; }
  .grid-4 { grid-template-columns: 1fr; }
  :root { --pad-lg: 56px; --pad: 32px; }
}

/* SVG diagrams — make sure they scale */
svg { max-width: 100%; height: auto; }


/* Übersicht — atlas + filter bar responsive */
.atlas-frame {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 48px 56px;
  position: relative;
}
.atlas-detail {
  position: absolute; right: 24px; top: 32px;
  width: 280px; background: var(--paper); border: 1px solid var(--ink);
  padding: 24px; pointer-events: none;
  transition: width 0.18s ease, padding 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.atlas-detail.is-empty {
  width: auto;
  max-width: 220px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.85);
  border: 1px dashed var(--ink-4);
  backdrop-filter: blur(4px);
}
.atlas-legend {
  display: flex; gap: 24px; margin-bottom: 24px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3);
}
.atlas-legend > span { font-size: 11px; }

.filter-grid {
  display: grid;
  grid-template-columns: 260px 1fr auto;
  gap: 32px; align-items: center;
}

@media (max-width: 1024px) {
  .atlas-frame { padding: 32px; }
  .atlas-detail { right: 24px; top: 32px; width: 240px; padding: 18px; }
}
@media (max-width: 900px) {
  .atlas-detail {
    position: relative; right: auto; top: auto; width: 100%;
    margin-top: 24px; min-height: 0;
  }
  .filter-grid { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 720px) {
  .atlas-frame { padding: 20px; }
}


/* PDCA — interaktiv */
.pdca-interactive { display: flex; flex-direction: column; gap: 20px; }
.pdca-tabs {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--rule);
}
.pdca-tab {
  appearance: none; background: transparent; border: 0;
  border-right: 1px solid var(--rule);
  padding: 14px 14px 14px 16px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
  cursor: pointer; text-align: left;
  font-family: var(--sans);
  transition: background 0.15s ease, color 0.15s ease;
}
.pdca-tab:last-child { border-right: 0; }
.pdca-tab:hover { background: rgba(217, 37, 37, 0.04); }
.pdca-tab.is-active { background: var(--ink); color: #fff; }
.pdca-tab-num {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.18em;
  color: var(--ink-4);
}
.pdca-tab.is-active .pdca-tab-num { color: var(--red); }
.pdca-tab-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; font-weight: 500;
}
.pdca-body {
  display: grid; grid-template-columns: minmax(200px, 260px) 1fr; gap: 28px;
  align-items: start;
}
.pdca-svg-wrap { display: flex; justify-content: center; }
.pdca-detail { min-width: 0; }
.pdca-bullets {
  list-style: none; padding: 0; margin: 20px 0 0;
  display: flex; flex-direction: column; gap: 10px;
  border-top: 1px solid var(--rule); padding-top: 16px;
}
.pdca-bullets li {
  display: grid; grid-template-columns: 32px 1fr; gap: 8px;
  font-size: 13.5px; line-height: 1.5; color: var(--ink-2);
}
.pdca-bullets .num {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--red); padding-top: 3px;
}
@media (max-width: 1180px) {
  .pdca-body { grid-template-columns: 1fr; gap: 24px; }
  .pdca-svg-wrap svg { max-width: 260px; }
}