/* Anker.studie – Stil nach rencolab-CI: dunkler Grund (Dark Mode ist Default,
   unabhängig von der Systemeinstellung), KoHo/Nova Round, Akzent Hellorange,
   Blau als Datenkontrast auf schwarz-weißer Grundkarte.
   Aufbau: Tokens → Basis → Layout → Kopf/Fuß → Komponenten → Startseite. */

@font-face { font-family: 'KoHo'; src: url('../fonts/KoHo-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'KoHo'; src: url('../fonts/KoHo-Medium.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'KoHo'; src: url('../fonts/KoHo-SemiBold.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Nova Round'; src: url('../fonts/NovaRound-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }

/* --- Tokens ---------------------------------------------------------------- */
:root {
  color-scheme: dark;

  /* rencolab-Palette */
  --c-white: #f7f7f7;
  --c-dark-blue: #192435;
  --c-petrol-blue: #063f5b;
  --c-light-blue: #409eba;
  --c-dark-orange: #e24a1b;
  --c-light-orange: #ee8f49;

  --bg: var(--c-dark-blue);
  --surface: color-mix(in srgb, var(--c-white) 6%, var(--c-dark-blue));
  --surface-glass: color-mix(in srgb, var(--c-dark-blue) 82%, transparent);
  --text: var(--c-white);
  --text-muted: color-mix(in srgb, var(--c-white) 72%, transparent);
  --ink: var(--c-dark-blue);
  --accent: var(--c-light-orange);
  --accent-strong: var(--c-dark-orange);
  --border: color-mix(in srgb, var(--c-light-blue) 25%, transparent);
  --border-strong: color-mix(in srgb, var(--c-light-blue) 50%, transparent);

  /* Kartenebenen – dieselben Farben gelten für Legende und Karte */
  --layer-bestand: var(--c-light-blue);
  --layer-geplant: color-mix(in srgb, var(--c-light-blue) 55%, var(--c-petrol-blue));
  --layer-bedarf: var(--c-light-orange);

  --font-body: 'KoHo', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'Nova Round', 'KoHo', system-ui, sans-serif;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --caps: 0.07em;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --radius-sm: 0.5rem;
  --radius-lg: 1.25rem;
  --radius-round: 999px;
  --header-height: 4.5rem;
  --content-width: 72rem;
  --transition: 180ms ease;
  --transition-card: 240ms ease;
}

/* --- Basis ----------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: clip;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
::selection { background-color: var(--accent); color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

h1, h2 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; text-wrap: balance; }
h1 { font-size: clamp(2.25rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.25rem; font-weight: 600; line-height: 1.3; }
p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }

h1 em, h2 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--c-light-orange) 0%, var(--c-dark-orange) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.skip-link {
  position: absolute;
  top: -10rem;
  left: var(--space-sm);
  z-index: 2000;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--ink);
}
.skip-link:focus { top: var(--space-sm); }

/* --- Layout ---------------------------------------------------------------- */
.container { width: 100%; max-width: var(--content-width); margin-inline: auto; padding-inline: var(--space-sm); }
.site-main { flex: 1; }
.section { padding-block: var(--space-lg); }
.section--alt {
  border-block: 1px solid var(--border);
  background:
    radial-gradient(50rem 28rem at 100% 0%, color-mix(in srgb, var(--c-petrol-blue) 45%, transparent), transparent 70%),
    var(--bg);
}
.section__head { max-width: 46rem; }
.section__intro { margin-top: var(--space-sm); color: var(--text-muted); font-size: 1.1rem; }
.section__lead { margin-top: var(--space-lg); max-width: 54rem; color: var(--text-muted); }
.section__lead a, .link { color: var(--accent); }
.section__lead a:hover, .link:hover { text-decoration: underline; }

.eyebrow { color: var(--accent); font-size: var(--fs-16); font-weight: 600; letter-spacing: var(--caps); text-transform: uppercase; }
.eyebrow + h1, .eyebrow + h2 { margin-top: var(--space-xs); }
.eyebrow--sm { margin-bottom: var(--space-xs); font-size: var(--fs-14); }

/* --- Kopfzeile ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  background-color: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); height: 100%; }
.site-header__brand { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-size: 1.4rem; }
.site-header__name span { color: var(--c-light-blue); }
.site-header__mark { width: 1.75rem; height: auto; }
.site-header__logo { height: 1.5rem; width: auto; }

/* --- Buttons --------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  color: var(--ink);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}
.button:hover { background-color: color-mix(in srgb, var(--c-white) 18%, var(--accent)); }
.button:active { transform: translateY(1px); }
.button--ghost { background-color: transparent; border-color: var(--border-strong); color: var(--text); }
.button--ghost:hover { background-color: color-mix(in srgb, var(--c-light-blue) 14%, transparent); border-color: var(--accent); }
.button-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-md); }

/* --- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(70rem 40rem at 82% 18%, color-mix(in srgb, var(--c-light-blue) 22%, transparent) 0%, transparent 62%),
    radial-gradient(42rem 30rem at 8% 92%, color-mix(in srgb, var(--c-dark-orange) 14%, transparent) 0%, transparent 60%),
    linear-gradient(155deg, var(--c-petrol-blue) 0%, var(--c-dark-blue) 62%);
}
/* feines Raster als Andeutung der Kartenfläche */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(color-mix(in srgb, var(--c-white) 5%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--c-white) 5%, transparent) 1px, transparent 1px);
  background-size: 3rem 3rem;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 0%, transparent 75%);
}
.hero__glow {
  position: absolute;
  z-index: -1;
  border-radius: var(--radius-round);
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
}
.hero__glow--1 { top: -10%; left: -10%; width: 40vw; height: 40vw; background: radial-gradient(circle, var(--c-light-blue), transparent); }
.hero__glow--2 { top: 30%; right: -15%; width: 45vw; height: 45vw; background: radial-gradient(circle, color-mix(in srgb, var(--c-dark-orange) 50%, transparent), transparent); }

.hero__inner { display: grid; gap: var(--space-lg); }
.hero__top { display: grid; gap: var(--space-md); align-items: center; }
.hero__content { max-width: 44rem; }
.hero__lead { margin-top: var(--space-md); font-size: 1.15rem; line-height: 1.75; color: color-mix(in srgb, var(--c-white) 88%, transparent); }
.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: var(--space-md);
  padding: 0.4rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-round);
  background-color: var(--surface-glass);
  color: var(--text-muted);
  font-size: 0.9375rem;
}
.status-dot {
  position: relative;
  flex: none;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--accent);
}
.status-dot::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--accent);
  animation: ping 2.4s ease-out infinite;
}
@keyframes ping { from { transform: scale(1); opacity: 0.9; } to { transform: scale(2.6); opacity: 0; } }

.hero__visual {
  position: relative;
  justify-self: center;
  width: min(100%, 26rem);
}
.hero__visual img { width: 100%; height: auto; animation: drift 14s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translateY(-0.5rem) rotate(-2deg); } to { transform: translateY(0.5rem) rotate(2deg); } }

@media (min-width: 60rem) {
  .hero { padding-block: calc(var(--space-xl) * 1.25) var(--space-xl); }
  .hero__top { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: var(--space-lg); }
  .hero__visual { width: 100%; max-width: 30rem; }
}

/* Farbmarken der drei Ebenen */
.swatch { flex: none; display: inline-block; width: 0.8rem; height: 0.8rem; border-radius: 50%; }
.swatch--bestand { background: var(--layer-bestand); }
.swatch--geplant { border: 2px solid var(--layer-bestand); background: transparent; }
.swatch--bedarf { background: radial-gradient(circle, var(--c-light-orange) 0%, color-mix(in srgb, var(--c-dark-orange) 40%, transparent) 70%, transparent 100%); width: 1rem; height: 1rem; }

/* --- Kennzahlen-Band ------------------------------------------------------- */
.keyfigures {
  --kf-rule: var(--border);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--kf-rule);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
/* Hellorange mit dunkler Schrift: nur --ink hält hier 4.5:1 */
.keyfigures--orange {
  --kf-rule: color-mix(in srgb, var(--ink) 28%, transparent);
  background-color: color-mix(in srgb, var(--c-light-orange) 92%, transparent);
}
.keyfigures--orange .keyfigure__value,
.keyfigures--orange .keyfigure__label,
.keyfigures--orange .keyfigures__source { color: var(--ink); }
.keyfigure { padding: var(--space-md) 1.6rem; }
.keyfigure + .keyfigure { border-left: 1px solid var(--kf-rule); }
.keyfigure__value { font-size: clamp(2.25rem, 4.5vw, 3.25rem); font-weight: 600; line-height: 1.05; }
.keyfigure__label { margin-top: var(--space-xs); color: var(--text-muted); font-size: var(--fs-16); }
.keyfigures__source {
  grid-column: 1 / -1;
  padding: 0.75rem 1.6rem;
  border-top: 1px solid var(--kf-rule);
  font-size: var(--fs-14);
}
@media (max-width: 40rem) {
  .keyfigures { grid-template-columns: 1fr; }
  .keyfigure + .keyfigure { border-left: 0; border-top: 1px solid var(--kf-rule); }
  .keyfigure { padding: 1.25rem 1.4rem; }
}

/* --- Karten ---------------------------------------------------------------- */
.grid { display: grid; gap: var(--space-md); grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); margin-top: var(--space-lg); }
.card {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-top: 3px solid var(--card-mark, var(--border-strong));
  border-radius: var(--radius-lg);
  background-color: var(--surface);
  transition: border-color var(--transition-card);
}
.card__title { margin-bottom: var(--space-xs); }
.card__text { margin-top: var(--space-xs); color: var(--text-muted); }
.card--bestand { --card-mark: var(--layer-bestand); }
.card--geplant { --card-mark: var(--layer-geplant); }
.card--bedarf  { --card-mark: var(--layer-bedarf); }

/* Ebenen-Karten: Glas, Nummer oben rechts, Farbmarke der Ebene */
.value-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); margin-top: var(--space-lg); }
.value-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-md) 1.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(18rem 10rem at 0% 0%, color-mix(in srgb, var(--card-mark, var(--c-light-blue)) 16%, transparent), transparent 70%),
    color-mix(in srgb, var(--c-dark-blue) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color var(--transition-card);
}
.value-card:hover { border-color: var(--accent-strong); }
.value-card__num {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  font-family: var(--font-display);
  font-size: 2.75rem;
  line-height: 1;
  color: color-mix(in srgb, var(--c-light-blue) 25%, transparent);
}
.value-card__head { display: flex; align-items: center; gap: 0.6rem; padding-right: 3.5rem; }
.value-card__head .eyebrow { margin: 0; }
.value-card h3 { margin-block: var(--space-sm) var(--space-xs); font-size: 1.35rem; }
.value-card__text { color: var(--text-muted); }
.value-card__fact {
  margin-top: auto;
  padding-top: var(--space-sm);
  color: var(--text);
  font-size: var(--fs-14);
}
.value-card__fact strong { color: var(--card-mark, var(--accent)); font-size: 1.1rem; }
.value-card .swatch { width: 0.9rem; height: 0.9rem; }
.value-card.card--bedarf .value-card__fact strong { color: var(--accent); }
@media (max-width: 60rem) { .value-cards { grid-template-columns: 1fr; } }

/* --- Zu den Daten ----------------------------------------------------------- */
.feature-list { display: grid; gap: var(--space-sm); margin-top: var(--space-md); padding: 0; list-style: none; }
.feature-list li { display: flex; gap: 0.8rem; align-items: flex-start; color: var(--text-muted); }
.feature-list li::before {
  content: '';
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--c-light-blue);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--c-light-blue) 20%, transparent);
}
.feature-list strong { color: var(--text); font-weight: 600; }
@media (min-width: 48rem) { .feature-list--zwei { grid-template-columns: 1fr 1fr; gap: var(--space-md); } }

/* --- CTA-Band -------------------------------------------------------------- */
.cta {
  display: grid;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(40rem 20rem at 100% 100%, color-mix(in srgb, var(--c-dark-orange) 22%, transparent), transparent 70%),
    linear-gradient(135deg, var(--c-petrol-blue), var(--c-dark-blue));
}
.cta h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.cta__text { margin-top: var(--space-sm); max-width: 40rem; color: var(--text-muted); }
.cta .button-row { margin-top: 0; }
@media (min-width: 60rem) {
  .cta { grid-template-columns: 1fr auto; align-items: center; padding: var(--space-lg); }
}

/* --- Fußzeile -------------------------------------------------------------- */
.site-footer {
  padding-block: var(--space-md);
  border-top: 1px solid var(--border);
  background-color: var(--surface);
  font-size: var(--fs-14);
}
.site-footer__inner { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-md); align-items: center; justify-content: space-between; }
.site-footer__logo { height: 1.5rem; width: auto; }
.site-footer__claim { margin-top: 0.35rem; color: var(--text-muted); }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; align-items: center; }
.site-footer__copyright { color: var(--text-muted); }
.site-footer a { color: var(--accent); }
.site-footer a:hover { text-decoration: underline; }

/* --- Bewegung reduzieren --------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .status-dot::after { display: none; }
}

/* Kopfzeile: Link zur Karte */
.site-header__end { display: flex; align-items: center; gap: var(--space-md); }
.site-header__link { font-weight: 500; }
.site-header__link:hover { color: var(--accent); }
@media (max-width: 26rem) {
  .site-header__end { gap: var(--space-sm); }
  .site-header__mark { display: none; }
  .site-header__logo { height: 1.15rem; }
}
.site-header__form { display: contents; }
button.site-header__link { padding: 0; border: 0; background: none; color: var(--text-muted); font: inherit; font-weight: 500; cursor: pointer; }
button.site-header__link:hover { color: var(--accent); }

/* Formulare (Anmeldung, Erfassen) */
.formular { display: grid; gap: 0.9rem; }
.feld { display: grid; gap: 0.3rem; }
.feld > span { color: var(--text-muted); font-size: 0.875rem; }
.feld input, .feld select, .feld textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--c-white) 4%, var(--bg));
  color: var(--text);
  font: inherit;
}
.feld input:focus, .feld select:focus, .feld textarea:focus { outline: 2px solid var(--c-light-blue); outline-offset: 0; border-color: transparent; }
.feld--fehler input, .feld--fehler select { border-color: var(--c-dark-orange); }
.feld__fehler { color: var(--c-light-orange); font-size: 0.8125rem; }
.formular__fehler { padding: 0.6rem 0.8rem; border: 1px solid var(--c-dark-orange); border-radius: var(--radius-sm); color: var(--c-light-orange); }
.anmelden { max-width: 26rem; margin: var(--space-lg) auto; padding: var(--space-md); border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.anmelden h1 { font-size: 1.75rem; margin-bottom: var(--space-sm); }
/* Angemeldet stehen drei Links im Kopf: auf schmalen Schirmen ohne rencolab-Logo (bleibt im Fuß) */
@media (max-width: 40rem) {
  .site-header__end:has(.site-header__form) > a:last-child { display: none; }
}