/* koerting-nutzenkalkulator — Styles.
   Werte NUR über Tokens (css/tokens.css = read-only Spiegel von
   20-design-tokens.json, Learning F1). Effra selbst gehostet über fonts.css.
   Kein font-weight 600 — die Skala ist 300/400/500/700/800 (22 §4.1). */

:root {
  color-scheme: dark;
  accent-color: var(--pink);   /* sonst kommt Browser-Blau durch (Learning F8) */
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg-1);
  color: var(--text-200);
  font-family: var(--font);
  font-size: var(--fs-md);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Grundbausteine ---------------------------------------------------- */

.nk-eyebrow {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-400);
  margin: 0 0 var(--space-sm);
}

.nk-h1 {
  font-family: var(--font-display);
  font-size: clamp(var(--fs-2xl), 5vw, var(--fs-3xl));
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.12;
  margin: 0 0 var(--space-md);
  color: var(--text-100);
}

.nk-h2 {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin: 0 0 var(--space-sm);
  color: var(--text-100);
}

.nk-h3 {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  margin: 0 0 var(--space-xs);
  color: var(--text-100);
}

.nk-text { margin: 0 0 var(--space-md); color: var(--text-300); max-width: 62ch; }
.nk-mini { font-size: var(--fs-sm); color: var(--text-400); margin: 0; }
.nk-mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* Die { }-Wortmarke: Klammern Pink, Wort Lime. Ein Schlüsselwort pro Produkt. */
.nk-brace { color: var(--pink); font-weight: 500; }
.nk-brand-word { color: var(--lime); padding: 0 3px; }

/* ---- Kopf und Fuß ------------------------------------------------------ */

.nk-topbar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-0);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
}
.nk-topbar__mark { display: flex; align-items: center; gap: var(--space-sm); }
.nk-topbar__logo { height: 28px; width: auto; display: block; }
.nk-topbar__name { font-size: var(--fs-sm); color: var(--text-400); }

.nk-footer {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-500);
  font-size: var(--fs-sm);
  text-align: center;
}
.nk-footer a { color: var(--text-400); }

/* ---- Hero -------------------------------------------------------------- */

.nk-hero {
  max-width: var(--reading);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}
.nk-hero__meta { color: var(--text-500); font-size: var(--fs-sm); margin: var(--space-md) 0 var(--space-lg); }

.nk-hero__punkte { list-style: none; padding: 0; margin: 0 0 var(--space-xl); max-width: 62ch; }
.nk-hero__punkte li {
  position: relative; padding-left: 26px; margin-bottom: var(--space-sm); color: var(--text-300);
}
.nk-hero__punkte li::before {
  content: '✓'; position: absolute; left: 0; color: var(--lime); font-weight: 700;
}

/* ---- Karten ------------------------------------------------------------ */

.nk-card {
  background: var(--bg-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}
.nk-card + .nk-card { margin-top: var(--space-md); }

/* ---- Knöpfe ------------------------------------------------------------ */

.nk-btn-primary, .nk-btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 500;                 /* nie 600 — Effra hat den Schnitt nicht */
  border-radius: var(--r-md);
  padding: 13px 26px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}
.nk-btn-primary { background: var(--pink); color: var(--white); }
.nk-btn-primary:hover:not(:disabled) {
  background: var(--pink-bright); border-color: var(--white); transform: translateY(-1px);
}
.nk-btn-ghost { background: transparent; color: var(--text-300); border-color: var(--border-strong); }
.nk-btn-ghost:hover:not(:disabled) { color: var(--text-100); border-color: var(--border-active); }

.nk-btn-primary:disabled, .nk-btn-ghost:disabled { opacity: .4; cursor: not-allowed; }

.nk-btn-primary:focus-visible, .nk-btn-ghost:focus-visible,
.nk-input:focus-visible, a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--border-active);
  outline-offset: 2px;
}

/* ---- Formular ---------------------------------------------------------- */

.nk-field { margin-bottom: var(--space-lg); }
.nk-label {
  display: block; font-size: var(--fs-sm); font-weight: 500;
  color: var(--text-300); margin-bottom: 6px;
}
.nk-label__pflicht { color: var(--pink); margin-left: 3px; }

.nk-input, .nk-textarea, .nk-select {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  color: var(--text-100);
  font-family: var(--font);
  font-size: var(--fs-md);
  transition: border-color var(--t-fast) var(--ease);
}
.nk-textarea { min-height: 96px; resize: vertical; line-height: 1.5; }
.nk-input:focus, .nk-textarea:focus, .nk-select:focus {
  outline: none; border-color: var(--border-active);
}
.nk-input::placeholder, .nk-textarea::placeholder { color: var(--text-600); }

/* Hinweistext trägt Information -> mindestens --text-400, nie 500 (22 §13) */
.nk-hint { font-size: var(--fs-sm); color: var(--text-400); margin: 6px 0 0; }

.nk-check { display: flex; gap: var(--space-sm); align-items: flex-start; }
.nk-check input { margin-top: 4px; flex-shrink: 0; width: 18px; height: 18px; }
.nk-check label { font-size: var(--fs-sm); color: var(--text-300); line-height: 1.5; }

.nk-error {
  color: var(--status-red); font-size: var(--fs-sm); margin: var(--space-sm) 0 0; min-height: 1.2em;
}

/* ---- Stepper (Nummern-Kreise, 22 §9.1) --------------------------------- */

.nk-stepper {
  display: flex; align-items: center; gap: var(--space-xs);
  margin-bottom: var(--space-xl); flex-wrap: wrap;
}
.nk-step { display: flex; align-items: center; gap: var(--space-xs); opacity: .5; }
.nk-step__num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg-2); border: 1px solid var(--border-soft);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: var(--fs-xs); font-weight: 500; color: var(--text-400);
  transition: all var(--t) var(--ease); flex-shrink: 0;
}
.nk-step__label { font-size: var(--fs-sm); color: var(--text-400); white-space: nowrap; }
.nk-step.is-active { opacity: 1; }
.nk-step.is-active .nk-step__num {
  background: var(--lime); color: var(--bg-0); border-color: var(--lime); box-shadow: var(--glow-lime);
}
.nk-step.is-active .nk-step__label { color: var(--text-100); }
.nk-step.is-done { opacity: 1; }
.nk-step.is-done .nk-step__num { background: var(--lime); color: var(--bg-0); border-color: var(--lime); }
.nk-step.is-done .nk-step__num::before { content: '✓'; }
.nk-step.is-done .nk-step__num span { display: none; }
.nk-step__linie { width: 20px; height: 1px; background: var(--border-soft); flex-shrink: 0; }

/* ---- Arbeitsfläche ----------------------------------------------------- */

.nk-wizard { max-width: var(--container); margin: 0 auto; padding: var(--space-xl) var(--space-lg); }
.nk-wizard__grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
@media (min-width: 1024px) {
  .nk-wizard__grid { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
  .nk-coach { position: sticky; top: 92px; }
}
.nk-wizard__nav {
  display: flex; justify-content: space-between; gap: var(--space-md);
  margin-top: var(--space-xl); padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
}

/* ---- Coach ------------------------------------------------------------- */

.nk-coach {
  background: var(--bg-2); border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg); padding: var(--space-lg);
}
.nk-coach__head {
  display: flex; align-items: center; gap: var(--space-sm);
  font-size: var(--fs-sm); font-weight: 500; color: var(--text-200);
  margin-bottom: var(--space-md);
}
.nk-coach__dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--lime);
  animation: nk-puls 2s ease-in-out infinite;
}
.nk-coach__hint { font-size: var(--fs-sm); color: var(--text-400); margin: 0; }
.nk-coach__befund {
  border-left: 3px solid var(--pink);
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  margin-bottom: var(--space-md);
}
.nk-coach__befund p { margin: 0 0 4px; font-size: var(--fs-sm); }
.nk-coach__warum { color: var(--text-300); }
.nk-coach__vorschlag { color: var(--text-200); }
.nk-coach__vorschlag strong { color: var(--lime); font-weight: 500; }

.nk-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--fs-xs); font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  border-radius: var(--r-pill); padding: 4px 12px;
}
.nk-badge--gut       { background: rgba(74,222,128,.12);  color: var(--status-green); border: 1px solid rgba(74,222,128,.3); }
.nk-badge--brauchbar { background: rgba(251,191,36,.12);  color: var(--status-yellow); border: 1px solid rgba(251,191,36,.3); }
.nk-badge--unscharf  { background: rgba(230,0,126,.12);   color: var(--pink-bright); border: 1px solid rgba(230,0,126,.3); }

/* ---- KI-Denk-Indikator (22 §8.8) --------------------------------------- */

.nk-denkt {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: var(--fs-sm); color: var(--text-400);
}
.nk-denkt__puls { display: inline-flex; align-items: flex-end; gap: 4px; height: 20px; }
.nk-denkt__puls i {
  display: block; width: 4.5px; height: 100%; border-radius: var(--r-pill);
  transform-origin: 50% 100%;
  animation: nk-denkt-puls var(--think-pulse) ease-in-out infinite;
}
.nk-denkt__puls i:nth-child(1) { background: var(--lime); }
.nk-denkt__puls i:nth-child(2) { background: var(--text-100); animation-delay: var(--think-stagger); }
.nk-denkt__puls i:nth-child(3) { background: var(--text-100); animation-delay: calc(2 * var(--think-stagger)); }
.nk-denkt__puls i:nth-child(4) { background: var(--pink); animation-delay: calc(3 * var(--think-stagger)); }
.nk-denkt__wort { animation: nk-denkt-wort var(--think-word-in) var(--ease-out) both; }

@keyframes nk-denkt-puls { 0%,100% { transform: scaleY(.4); opacity: .45; } 50% { transform: scaleY(1); opacity: 1; } }
@keyframes nk-denkt-wort { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
@keyframes nk-puls { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.25); opacity: .5; } }

/* ---- Warteschlange ----------------------------------------------------- */

.nk-queue { text-align: center; padding: var(--space-xl) var(--space-lg); }
.nk-queue__position {
  font-family: var(--mono); font-size: var(--fs-3xl); font-weight: 700;
  color: var(--lime); line-height: 1; margin: var(--space-md) 0 var(--space-sm);
}
.nk-queue__bar {
  height: 4px; background: var(--bg-3); border-radius: var(--r-pill);
  overflow: hidden; margin: var(--space-lg) auto 0; max-width: 360px;
}
.nk-queue__bar i {
  display: block; height: 100%; width: 35%; border-radius: var(--r-pill);
  background: var(--grad-progress);
  animation: nk-slide 1.6s var(--ease) infinite;
}
@keyframes nk-slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(400%); } }

/* ---- Skeleton (Ladezustand in Inhaltsform, 24 §9) ---------------------- */

.nk-skel { background: var(--bg-3); border-radius: var(--r-xs); animation: nk-atmen calc(var(--think-pulse) * 1.6) ease-in-out infinite; }
.nk-skel--zeile { height: 14px; margin-bottom: 10px; }
.nk-skel--titel { height: 22px; width: 55%; margin-bottom: var(--space-md); }
@keyframes nk-atmen { 0%,100% { opacity: .5; } 50% { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .nk-skel { opacity: .7; }
}

/* ---- Hilfsklassen ------------------------------------------------------ */

.nk-center { text-align: center; }
.nk-stack > * + * { margin-top: var(--space-md); }
[hidden] { display: none !important; }
.nk-sr {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---- Report ------------------------------------------------------------ */

.nk-sichten {
  display: inline-flex; gap: 4px; padding: 4px;
  background: var(--bg-3); border-radius: var(--r-md);
  margin: var(--space-md) 0 var(--space-sm);
}
.nk-sicht {
  border: 0; background: transparent; cursor: pointer;
  font-family: var(--font); font-size: var(--fs-sm); font-weight: 500;
  color: var(--text-400); padding: 8px 18px; border-radius: var(--r-sm);
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.nk-sicht.is-aktiv { background: var(--pink); color: var(--white); }

.nk-kennzahlen {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--space-md); margin: var(--space-md) 0;
}
.nk-kennzahl {
  background: var(--bg-2); border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--lime);
  border-radius: var(--r-md); padding: var(--space-md);
}
.nk-kennzahl__label {
  font-size: var(--fs-xs); letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-400); margin: 0 0 6px;
}
.nk-kennzahl__wert {
  font-size: var(--fs-xl); font-weight: 700; color: var(--text-100); margin: 0; line-height: 1.1;
}
.nk-kennzahl__zusatz { font-size: var(--fs-sm); color: var(--text-400); margin: 6px 0 0; }

.nk-hebel { border-top: 1px solid var(--border-subtle); padding: var(--space-md) 0; }
.nk-hebel__kopf {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: var(--space-md); margin-bottom: 4px;
}
.nk-hebel__name { font-weight: 500; color: var(--text-100); }
.nk-hebel__wert { font-weight: 700; color: var(--text-100); white-space: nowrap; }
.nk-hebel__typ { font-size: var(--fs-sm); color: var(--text-400); margin: 0 0 var(--space-sm); }
.nk-hebel__laie { font-size: var(--fs-sm); color: var(--text-300); margin: 0 0 var(--space-sm); max-width: 68ch; }
.nk-hebel__rechnung { font-size: var(--fs-sm); color: var(--text-300); margin: var(--space-sm) 0; }

.nk-hebel__summe {
  display: flex; justify-content: space-between; align-items: baseline;
  border-top: 2px solid var(--border-strong); margin-top: var(--space-sm);
  padding-top: var(--space-md); font-weight: 700; color: var(--text-100); font-size: var(--fs-lg);
}

.nk-details { margin-top: var(--space-sm); }
.nk-details summary {
  cursor: pointer; font-size: var(--fs-sm); color: var(--text-400);
  padding: 4px 0; list-style-position: inside;
}
.nk-details summary:hover { color: var(--text-100); }

.nk-tabelle { width: 100%; border-collapse: collapse; margin: var(--space-sm) 0; font-size: var(--fs-sm); }
.nk-tabelle td { padding: 7px 10px 7px 0; border-bottom: 1px solid var(--border-subtle); color: var(--text-300); vertical-align: top; }
.nk-tabelle td:last-child { text-align: right; padding-right: 0; }
.nk-herkunft { color: var(--text-400); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .08em; }

.nk-disclaimer { border-left: 3px solid var(--text-400); }
.nk-aktionen__reihe { display: flex; gap: var(--space-md); flex-wrap: wrap; margin-bottom: var(--space-sm); }
.nk-aktionen__reihe > * { text-decoration: none; }

/* ---- Druck (das PDF entsteht hierüber, keine Bibliothek) --------------- */

@media print {
  :root { color-scheme: light; }
  body { background: #fff; color: #191919; font-size: 11pt; }
  .nk-topbar, .nk-footer, .nk-stepper, .nk-coach, .nk-aktionen, .nk-sichten { display: none !important; }
  .nk-card, .nk-kennzahl {
    background: #fff; border: 1px solid #ddd; box-shadow: none;
    break-inside: avoid; page-break-inside: avoid;
  }
  .nk-h1, .nk-h2, .nk-h3, .nk-hebel__name, .nk-hebel__wert, .nk-kennzahl__wert { color: #191919; }
  .nk-text, .nk-hint, .nk-mini, .nk-hebel__laie, .nk-tabelle td { color: #3a3a3a; }
  .nk-hebel { break-inside: avoid; page-break-inside: avoid; }
  .nk-details[open] summary { display: none; }
  .nk-details { break-inside: avoid; }
  details:not([open]) > *:not(summary) { display: revert; }   /* alles drucken, auch Zugeklapptes */
  .nk-wizard { max-width: none; padding: 0; }
  .nk-wizard__grid { display: block; }
}