/* ════════════════════════════════════════════════════════════════════
   sai-brand.css — Sauerland.AI Designsystem (Single Source of Truth)
   R-SAI-DESIGN (2026-06-13). Eine Datei, eine Marke. Alle oeffentlichen
   Surfaces teilen diese Tokens + Basis-Komponenten. Keine externen Fonts
   (DSGVO), System-Stack. Hell, freundlich, premium.
   ════════════════════════════════════════════════════════════════════ */
:root {
  /* Marke — EIN Gruen, EIN Gold */
  --sai-green:       #1f7a4d;
  --sai-green-deep:  #135c39;
  --sai-green-soft:  #74c69d;
  --sai-gold:        #c79a3b;
  /* Flaechen + Text */
  --sai-ink:         #0c1f16;
  --sai-ink-soft:    #3d5448;
  /* WCAG 2.2 AA (2026-07-28): gemessen, nicht geschaetzt. Die vier folgenden
     Werte waren als Text durchgefallen. Neu ist jeweils der naechstdunklere Ton
     desselben Farbwinkels, der 4.5:1 erreicht — Beweis: tests/test_brand_contrast.py.
     Nur diese vier Token werden als Text benutzt (Footer + Belief-Badges); die
     Badge-Toenungen bleiben unveraendert, sie sind in die Messung eingerechnet. */
  --sai-muted:       #5a7266;  /* war #6b8377 = 3.94:1 -> jetzt 5.02:1 */
  --sai-paper:       #f7fcf9;
  --sai-surface:     #ffffff;
  --sai-border:      #d7eadf;
  /* Rueckmeldungen in Formularen (Fehler/Erfolg). Bis 2026-07-28 entstanden
     diese Farben in jeder Auth-Vorlage neu; hier stehen sie einmal. Die
     Textfarben sind gegen ihren eigenen Grund UND gegen die Seitenflaechen auf
     WCAG-AA gemessen — Beweis: tests/test_brand_contrast.py. */
  --sai-error:       #b3261e;
  --sai-error-bg:    #fef2f2;
  --sai-error-line:  #f2c6c2;
  --sai-ok:          #16653c;
  --sai-ok-bg:       #f0fdf4;
  --sai-ok-line:     #bbf7d0;
  /* Belief-Status — Text auf getoentem Grund, daher strenger als auf Weiss */
  --sai-proved:      #1a7546;  /* war #1f8a52 = 3.62:1 -> jetzt 4.74:1 */
  --sai-probable:    #8f5e10;  /* war #b7791f = 3.12:1 -> jetzt 4.76:1 */
  --sai-unknown:     #5b6a80;  /* war #64748b = 3.97:1 -> jetzt 4.59:1 */
  /* Form */
  --sai-radius:      14px;
  --sai-pill:        999px;
  --sai-shadow:      0 18px 48px rgba(16, 32, 51, 0.10);
  --sai-grad:        linear-gradient(135deg, var(--sai-green) 0%, var(--sai-green-deep) 100%);
  --sai-font:        "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

/* Basis-Komponenten (opt-in per Klasse) */
.sai-btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: var(--sai-pill);
  background: var(--sai-grad); color: #fff;
  font: 700 15px/1 var(--sai-font); letter-spacing: 0.02em;
  padding: 14px 28px; cursor: pointer; text-decoration: none;
  box-shadow: 0 10px 26px rgba(19, 92, 57, 0.26);
  transition: filter .25s, transform .2s;
}
.sai-btn:hover { filter: brightness(1.07); }
.sai-btn.ghost {
  background: transparent; color: var(--sai-green-deep);
  border: 1px solid var(--sai-border); box-shadow: none;
}
.sai-card {
  background: var(--sai-surface); border: 1px solid var(--sai-border);
  border-radius: var(--sai-radius); box-shadow: var(--sai-shadow);
}
.sai-h1 {
  font-family: var(--sai-font); font-weight: 800;
  letter-spacing: -0.02em; line-height: 1.06;
}
.sai-belief {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 12px; border-radius: var(--sai-pill);
  font: 800 10px/1 var(--sai-font); letter-spacing: 0.14em;
}
.sai-belief.proved   { background: rgba(31,138,82,.12);  color: var(--sai-proved); }
.sai-belief.probable { background: rgba(199,154,59,.14); color: var(--sai-probable); }
.sai-belief.unknown  { background: rgba(100,116,139,.12); color: var(--sai-unknown); }

/* Einheitlicher Footer — gleiches Markup auf JEDER Seite */
.sai-footer {
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  align-items: center; justify-content: center;
  padding: 22px 24px; font: 400 12px/1.6 var(--sai-font); color: var(--sai-muted);
}
.sai-footer a { color: var(--sai-muted); text-decoration: none; transition: color .25s; }
.sai-footer a:hover { color: var(--sai-green-deep); }
.sai-footer .sep { opacity: .4; }

/* Public landing: content bands and the clean-business product workbench. */
.sai-landing .section-head {
  max-width: 760px;
  margin-bottom: 34px;
}
.sai-landing .kicker {
  margin: 0 0 13px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}
.sai-landing h2 {
  margin: 0;
  color: #fff;
  font-size: 46px;
  line-height: 1.04;
  letter-spacing: 0;
}
.sai-landing .section-head p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}
.sai-landing .feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.sai-landing .feature {
  min-height: 220px;
  border: 1px solid rgba(238, 246, 239, .11);
  border-radius: 8px;
  background: var(--panel-2);
  padding: 22px;
}
.sai-landing .feature .icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: rgba(31, 122, 77, .22);
  color: var(--green);
  font-weight: 900;
}
.sai-landing .feature h3 {
  margin: 0;
  color: #fff;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0;
}
.sai-landing .feature p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}
.sai-landing .price-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.sai-landing .price-figure {
  margin: 14px 0 0 !important;
  color: var(--green) !important;
  font-size: 22px !important;
  font-weight: 800;
  letter-spacing: 0;
}
.sai-landing .price-note {
  margin: 22px auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}
.sai-landing .price-note a {
  color: var(--green);
  text-decoration: underline;
}
@media (max-width: 860px) {
  .sai-landing .price-grid { grid-template-columns: 1fr; }
}
.sai-landing .wide-band {
  width: 100%;
  padding: 92px 0;
  border-block: 1px solid rgba(238, 246, 239, .08);
  background:
    linear-gradient(180deg, rgba(31, 122, 77, .11), rgba(6, 17, 13, .18)),
    #081612;
}
.sai-landing .band-inner {
  width: min(1180px, calc(100% - 48px));
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  align-items: center;
  gap: 36px;
  margin: 0 auto;
}
.sai-landing .principles {
  display: grid;
  gap: 12px;
}
.sai-landing .principle {
  border: 1px solid rgba(238, 246, 239, .12);
  border-radius: 8px;
  background: rgba(6, 17, 13, .58);
  padding: 18px;
}
.sai-landing .principle strong {
  display: block;
  margin-bottom: 7px;
  color: #fff;
}
.sai-landing .principle span {
  color: var(--muted);
  line-height: 1.5;
}
.sai-landing .cta-band {
  width: min(1180px, calc(100% - 48px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin: 0 auto;
  padding: 86px 0 72px;
}
.sai-landing .cta-band h2 { max-width: 760px; }
.sai-landing .cta-band p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}
.sai-landing footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid rgba(238, 246, 239, .1);
  padding: 24px;
  color: rgba(238, 246, 239, .58);
}
.sai-landing footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.sai-landing footer a:hover,
.sai-landing footer a:focus-visible { color: #fff; outline: none; }

.sai-landing .product-tour {
  padding-top: 44px;
}
.sai-landing .product-tour .section-head {
  max-width: 820px;
}
.sai-landing .product-shell {
  overflow: hidden;
  border: 1px solid rgba(238, 246, 239, .16);
  border-radius: 8px;
  background: #eef3f0;
  color: #14231b;
  box-shadow: 0 34px 90px rgba(0, 0, 0, .34);
}
.sai-landing .product-toolbar {
  min-height: 64px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 10px 16px;
  border-bottom: 1px solid #d8e2dc;
  background: #fff;
}
.sai-landing .product-toolbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 850;
  white-space: nowrap;
}
.sai-landing .product-toolbar-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background:
    radial-gradient(circle at center, #f2b84b 0 3px, transparent 4px),
    conic-gradient(from 24deg, #1f7a4d, #74c69d, #e07a24, #1f7a4d);
  box-shadow: 0 7px 18px rgba(31, 122, 77, .22);
}
.sai-landing .product-toolbar-context {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #d7e2dc;
  border-radius: 7px;
  background: #f6f9f7;
  padding: 10px 14px;
  color: #607168;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sai-landing .product-toolbar-context b { color: #14231b; }
.sai-landing .product-launch {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: #1f7a4d;
  padding: 0 16px;
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}
.sai-landing .product-launch:hover,
.sai-landing .product-launch:focus-visible {
  background: #135c39;
  outline: 3px solid #0b211a;
  outline-offset: 2px;
}
.sai-landing .product-grid {
  min-height: 530px;
  display: grid;
  grid-template: "product-nav product-canvas product-context" 1fr / 190px minmax(0, 1fr) 285px;
}
.sai-landing .product-nav {
  grid-area: product-nav;
  display: grid;
  align-content: start;
  gap: 5px;
  padding: 18px 12px;
  background: #0b211a;
  color: #dce8e1;
}
.sai-landing .product-nav-label {
  margin: 0 8px 8px;
  color: #86a296;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
.sai-landing .product-nav a {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 0 11px;
  color: #dce8e1;
  font-size: 13px;
  font-weight: 650;
}
.sai-landing .product-nav a::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 2px;
  background: #78948a;
}
.sai-landing .product-nav a:nth-of-type(2)::before { background: #e07a24; }
.sai-landing .product-nav a:nth-of-type(3)::before { background: #1596a5; }
.sai-landing .product-nav a:nth-of-type(4)::before { background: #c79a3b; }
.sai-landing .product-nav a.active,
.sai-landing .product-nav a:hover {
  border-color: rgba(116, 198, 157, .34);
  background: rgba(116, 198, 157, .13);
  color: #fff;
}
.sai-landing .product-nav a:focus-visible {
  border-color: #f2b84b;
  background: rgba(116, 198, 157, .13);
  color: #fff;
  outline: 3px solid #f2b84b;
  outline-offset: -3px;
}
.sai-landing .product-nav a.active:not(:focus-visible) {
  outline: none;
}
.sai-landing .product-canvas {
  grid-area: product-canvas;
  min-width: 0;
  padding: 22px;
  background: #f4f7f5;
}
.sai-landing .product-canvas-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}
.sai-landing .product-canvas-head p,
.sai-landing .product-canvas-head h3 { margin: 0; }
.sai-landing .product-canvas-head p {
  color: #52675c;
  font-size: 12px;
  font-weight: 750;
}
.sai-landing .product-canvas-head h3 {
  margin-top: 5px;
  color: #14231b;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}
.sai-landing .product-state {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  border: 1px solid #efd2b8;
  border-radius: 999px;
  background: #fff7ef;
  padding: 0 10px;
  color: #a24f14;
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}
.sai-landing .product-work-area {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(210px, .8fr);
  gap: 14px;
}
.sai-landing .product-focus,
.sai-landing .product-result {
  border: 1px solid #d9e3dd;
  border-radius: 7px;
  background: #fff;
  padding: 18px;
}
.sai-landing .product-focus > span,
.sai-landing .product-result > span,
.sai-landing .product-context-group > b {
  color: #52675c;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
.sai-landing .product-focus h4,
.sai-landing .product-result h4 {
  margin: 8px 0 0;
  color: #14231b;
  font-size: 17px;
  line-height: 1.3;
  letter-spacing: 0;
}
.sai-landing .product-focus > p,
.sai-landing .product-result > p {
  margin: 9px 0 0;
  color: #61736a;
  font-size: 13px;
  line-height: 1.5;
}
.sai-landing .product-stage-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}
.sai-landing .product-stage {
  min-height: 66px;
  border: 1px solid #dce5e0;
  border-radius: 7px;
  background: #f7f9f8;
  padding: 10px;
}
.sai-landing .product-stage i {
  width: 9px;
  height: 9px;
  display: block;
  margin-bottom: 8px;
  border-radius: 50%;
  background: #1f7a4d;
}
.sai-landing .product-stage:nth-child(2) i { background: #1596a5; }
.sai-landing .product-stage:nth-child(3) i { background: #e07a24; }
.sai-landing .product-stage b,
.sai-landing .product-stage small { display: block; }
.sai-landing .product-stage b { color: #203028; font-size: 12px; }
.sai-landing .product-stage small { margin-top: 3px; color: #52675c; line-height: 1.3; }
.sai-landing .product-result-lines {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}
.sai-landing .product-result-line {
  width: 84%;
  height: 9px;
  border-radius: 2px;
  background: #e5ece8;
}
.sai-landing .product-result-line:nth-child(1) { width: 92%; background: #cce4d5; }
.sai-landing .product-result-line:nth-child(2) { width: 74%; }
.sai-landing .product-result-line:nth-child(4) { width: 58%; background: #f4dcc8; }
.sai-landing .product-timeline {
  margin-top: 14px;
  border: 1px solid #d9e3dd;
  border-radius: 7px;
  background: #fff;
  padding: 14px;
}
.sai-landing .product-timeline > b { color: #14231b; font-size: 12px; }
.sai-landing .product-timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.sai-landing .product-timeline-step {
  min-height: 48px;
  border-top: 3px solid #1f7a4d;
  padding-top: 8px;
  color: #51655a;
  font-size: 11px;
  font-weight: 750;
}
.sai-landing .product-timeline-step:nth-child(2) { border-color: #1596a5; }
.sai-landing .product-timeline-step:nth-child(3) { border-color: #c79a3b; }
.sai-landing .product-timeline-step:nth-child(4) { border-color: #e07a24; }
.sai-landing .product-context {
  grid-area: product-context;
  min-width: 0;
  border-left: 1px solid #d8e2dc;
  background: #fff;
  padding: 22px 18px;
}
.sai-landing .product-context h3,
.sai-landing .product-context p { margin: 0; }
.sai-landing .product-context h3 { color: #14231b; font-size: 18px; }
.sai-landing .product-context > p {
  margin-top: 7px;
  color: #66786e;
  font-size: 13px;
  line-height: 1.45;
}
.sai-landing .product-context-group { margin-top: 20px; }
.sai-landing .product-context-group > b {
  display: block;
  margin-bottom: 8px;
  color: #384b41;
}
.sai-landing .product-context-item {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid #e2e9e5;
  color: #273a30;
  font-size: 12px;
}
.sai-landing .product-context-item span:last-child {
  color: #1f7a4d;
  font-weight: 800;
}
.sai-landing .product-decision {
  margin-top: 18px;
  border: 1px solid #efd9c4;
  border-radius: 7px;
  background: #fff8f1;
  padding: 13px;
}
.sai-landing .product-decision b,
.sai-landing .product-decision span { display: block; }
.sai-landing .product-decision b { color: #733c17; font-size: 12px; }
.sai-landing .product-decision span {
  margin-top: 5px;
  color: #855f43;
  font-size: 11px;
  line-height: 1.4;
}
.sai-landing .product-shortcuts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}
.sai-landing .product-shortcuts a {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid rgba(238, 246, 239, .13);
  border-radius: 7px;
  background: rgba(17, 35, 28, .78);
  padding: 13px 15px;
}
.sai-landing .product-shortcuts a:hover,
.sai-landing .product-shortcuts a:focus-visible {
  border-color: rgba(116, 198, 157, .48);
  background: rgba(31, 122, 77, .18);
  outline: 3px solid #f2b84b;
  outline-offset: 2px;
}
.sai-landing .product-shortcuts b,
.sai-landing .product-shortcuts small { display: block; }
.sai-landing .product-shortcuts b { color: #fff; font-size: 14px; }
.sai-landing .product-shortcuts small { margin-top: 3px; color: var(--muted); font-size: 11px; }
.sai-landing .product-shortcuts i { color: var(--gold); font-size: 20px; font-style: normal; }

@media (max-width: 1080px) {
  .sai-landing .product-grid {
    grid-template: "product-nav product-canvas" auto "product-nav product-context" auto / 160px minmax(0, 1fr);
  }
  .sai-landing .product-context { border-top: 1px solid #d8e2dc; border-left: 0; }
  .sai-landing .product-work-area { grid-template-columns: 1fr; }
  .sai-landing .product-shortcuts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .sai-landing .product-toolbar { grid-template-columns: minmax(0, 1fr) auto; }
  .sai-landing .product-toolbar-context { grid-column: 1 / -1; grid-row: 2; }
  .sai-landing .product-grid { display: block; min-height: 0; }
  .sai-landing .product-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    padding: 10px;
  }
  .sai-landing .product-nav-label { display: none; }
  .sai-landing .product-nav a {
    min-width: 0;
    min-height: 42px;
    white-space: normal;
  }
  .sai-landing .product-canvas,
  .sai-landing .product-context { padding: 16px; }
  .sai-landing .product-canvas-head { display: grid; grid-template-columns: 1fr; }
  .sai-landing .product-state { justify-self: start; }
  .sai-landing .product-stage-row { grid-template-columns: 1fr; }
  .sai-landing .product-timeline-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 360px) {
  .sai-landing .product-toolbar { grid-template-columns: 1fr; }
  .sai-landing .product-launch {
    grid-row: 2;
    width: 100%;
  }
  .sai-landing .product-toolbar-context {
    grid-column: 1;
    grid-row: 3;
  }
}