/* Design-Pass 28.08.2026 – Wahrnehmungsgrammatik "Meer": Tools die dich
   verarbeiten (dunkelblau, tief, ernst). Palette abgeleitet von der
   fertigen "Tiefe See"-Probatorik-Palette (meta_design), Kontrast auf
   Werkzeug-Niveau (40–65%) statt Probatorik-Niveau (80%) gedämpft.
   Radius 4px (Meer-Default), Spacing mind. Stufe 4, Typografie durchgehend
   Sans (informieren, nicht berühren – Prinzip 8), kein Bloom (Prinzip 9:
   "Das Messer glänzt nicht"). Details: meta_design/wahrnehmungsgrammatik.md */

:root {
  --color-bg: #0d1b2a;
  --color-primary: #152a3d;
  --color-secondary: #5b7690;
  --color-accent: #5dade2;
  --color-teal: #3fa796;
  --color-warm: #d9a441;
  --color-light: #eaf1f7;

  --radius: 4px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;

  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  -webkit-tap-highlight-color: transparent;
}

html {
  background: var(--color-bg);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Anchor-Ziele dürfen nicht hinter der sticky Nav verschwinden */
[id] {
  scroll-margin-top: 5.5rem;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-light);
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(93, 173, 226, 0.10), transparent),
    var(--color-bg);
  background-attachment: fixed;
}

/* Noise/Grain, 4% – Dark-Mode-Default, Prinzip 10 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin-inline: auto;
  padding-left: 1.3rem;
  padding-right: 1.3rem;
  padding-bottom: 4rem;
}

/* Prosa-/Formular-Bereiche bleiben lesbar schmal, auch wenn .wrap breit ist */
.narrow {
  max-width: 760px;
  margin-inline: auto;
}

/* ---------- Sticky Nav ---------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(13, 27, 42, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(91, 118, 144, 0.25);
}

.site-nav-inner {
  position: relative;
  max-width: 1160px;
  margin-inline: auto;
  padding-left: 1.3rem;
  padding-right: 1.3rem;
  padding-top: max(0.8rem, env(safe-area-inset-top));
  padding-bottom: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-light);
  min-height: 44px;
  flex-shrink: 0;
}

.brand-mark {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.brand-word {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.site-nav-links a,
.nav-link-button {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
  padding: 0.6rem 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

@media (hover: hover) {
  .site-nav-links a:hover,
  .nav-link-button:hover {
    color: var(--color-light);
  }
}

.site-nav-links a.active {
  color: var(--color-accent);
}

.nav-burger {
  display: none;
  background: none;
  border: none;
  color: var(--color-light);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

@media (max-width: 720px) {
  .nav-burger {
    display: inline-flex;
  }

  .site-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-primary);
    border-bottom: 1px solid rgba(91, 118, 144, 0.25);
    padding: 0.3rem 1.3rem 1rem;
  }

  .site-nav-links.is-open {
    display: flex;
  }

  .site-nav-links a,
  .nav-link-button {
    width: 100%;
    padding-top: 0.8rem;
    padding-bottom: 0.8rem;
  }
}

/* ---------- Header ---------- */

.page-header {
  padding-top: 3rem;
  padding-bottom: 0.5rem;
}

.hero-wordmark {
  margin: 0 0 0.6rem;
}

.hero-wordmark img {
  display: block;
  height: clamp(46px, 7vw, 78px);
  width: auto;
  /* Wordmark-Asset ist dunkles Navy auf transparent (für hellen Grund
     generiert) – auf dem dunklen Meer-Hintergrund invertiert zu hell. */
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

.subtitle {
  margin: 0;
  color: var(--color-secondary);
  font-size: 1.05rem;
}

/* ---------- Disclaimer ---------- */

.disclaimer {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  background: var(--color-primary);
  border: 1px solid rgba(217, 164, 65, 0.35);
  border-left: 3px solid var(--color-warm);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-top: 1.6rem;
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-light);
}

.disclaimer svg {
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--color-warm);
}

.disclaimer strong {
  color: var(--color-warm);
}

.disclaimer p {
  margin: 0.4rem 0 0;
  color: var(--color-secondary);
}

.disclaimer p:first-child {
  margin-top: 0;
}

/* ---------- Freitextfeld ---------- */

.freetext-section {
  background: var(--color-primary);
  border: 1px solid rgba(93, 173, 226, 0.35);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  margin-bottom: 2.5rem;
}

.freetext-heading {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-light);
}

.freetext-note {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-secondary);
}

.freetext-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.freetext-input {
  width: 100%;
  resize: vertical;
  min-height: 4.5rem;
  background: var(--color-bg);
  border: 1px solid rgba(91, 118, 144, 0.4);
  border-radius: var(--radius);
  color: var(--color-light);
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.6;
  padding: 0.75rem 1rem;
}

.freetext-input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -1px;
}

.freetext-submit {
  align-self: flex-start;
  background: none;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  color: var(--color-accent);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  min-height: 44px;
  cursor: pointer;
}

@media (hover: hover) {
  .freetext-submit:hover {
    background: rgba(93, 173, 226, 0.12);
  }
}

.freetext-submit:active {
  background: rgba(93, 173, 226, 0.2);
}

.freetext-submit:disabled {
  opacity: 0.5;
  cursor: default;
}

.freetext-result {
  margin-top: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(91, 118, 144, 0.25);
}

.section-heading {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  margin: 0 0 1rem;
}

/* ---------- Fragen-Gruppen / Accordion ---------- */
/* Grid aus Themen-Karten – nutzt die Seitenbreite, jede Karte wächst
   unabhängig mit ihrem geöffneten Accordion (align-items: start), sonst
   würden sich Nachbarkarten in derselben Grid-Zeile künstlich strecken. */

#question-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.question-group {
  background: var(--color-primary);
  border: 1px solid rgba(91, 118, 144, 0.3);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
}

.question-group h2 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-teal);
  margin: 0 0 0.75rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid rgba(91, 118, 144, 0.3);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item.is-open {
  border-color: var(--color-accent);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: none;
  border: none;
  color: var(--color-light);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  padding: 0.75rem 1.6rem;
  min-height: 44px;
  cursor: pointer;
  line-height: 1.5;
}

@media (hover: hover) {
  .faq-question:hover {
    background: rgba(93, 173, 226, 0.08);
  }
}

.faq-question:active {
  background: rgba(93, 173, 226, 0.14);
}

.faq-question:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.faq-chevron {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--color-secondary);
  transition: transform 0.25s ease;
}

@media (prefers-reduced-motion: reduce) {
  .faq-chevron {
    transition: none;
  }
}

.faq-item.is-open .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

@media (prefers-reduced-motion: reduce) {
  .faq-answer {
    transition: none;
  }
}

.faq-answer-inner {
  padding: 0 1.6rem 1.4rem;
  border-top: 1px solid rgba(91, 118, 144, 0.25);
  margin-top: 0.1rem;
  padding-top: 1.1rem;
}

/* ---------- Antwort-Zustände ---------- */

.state-loading {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-secondary);
  font-size: 0.95rem;
}

.state-loading .spinner {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(93, 173, 226, 0.25);
  border-top-color: var(--color-accent);
  animation: spin 0.8s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .state-loading .spinner {
    animation: none;
    border-top-color: rgba(93, 173, 226, 0.25);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.answer-text {
  margin: 0 0 1rem;
  color: var(--color-light);
  white-space: pre-wrap;
}

.answer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(63, 167, 150, 0.15);
  color: var(--color-teal);
}

.badge.badge-cached {
  background: rgba(91, 118, 144, 0.2);
  color: var(--color-secondary);
}

.citations {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  padding: 0;
  list-style: none;
}

.citations li {
  font-size: 0.82rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(93, 173, 226, 0.35);
  border-radius: var(--radius);
  color: var(--color-accent);
  background: rgba(93, 173, 226, 0.06);
}

.chunk-trace {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-secondary);
  opacity: 0.75;
  margin: 0 0 0.9rem;
  word-break: break-word;
}

.answer-disclaimer {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-secondary);
  border-top: 1px solid rgba(91, 118, 144, 0.25);
  padding-top: 0.8rem;
  margin: 0;
}

.state-note {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--color-light);
}

.state-note.state-error {
  color: var(--color-light);
}

.state-note svg {
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--color-warm);
}

.state-note p {
  margin: 0;
  white-space: pre-wrap;
}

/* ---------- "Wie funktioniert das" ---------- */

.how-it-works {
  margin-top: 2.5rem;
  background: var(--color-primary);
  border: 1px solid rgba(91, 118, 144, 0.3);
  border-radius: var(--radius);
}

.how-it-works summary {
  cursor: pointer;
  padding: 1rem 1.6rem;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
}

.how-it-works summary::-webkit-details-marker {
  display: none;
}

.how-it-works summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--color-secondary);
}

.how-it-works[open] summary::after {
  content: "\2212";
}

.how-it-works-body {
  padding: 0 1.6rem 1.6rem;
  color: var(--color-secondary);
  font-size: 0.95rem;
}

.how-it-works-body ol {
  padding-left: 1.2rem;
  margin: 0.8rem 0;
}

.how-it-works-body li {
  margin-bottom: 0.5rem;
}

.how-it-works-body strong {
  color: var(--color-light);
}

/* ---------- Footer ---------- */

.page-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  padding-bottom: max(1rem, env(safe-area-inset-bottom));
  border-top: 1px solid rgba(91, 118, 144, 0.25);
  font-size: 0.85rem;
  color: var(--color-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

.page-footer a,
.footer-link {
  color: var(--color-teal);
  text-decoration: none;
}

.footer-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  min-height: 44px;
}

@media (hover: hover) {
  .page-footer a:hover,
  .footer-link:hover {
    text-decoration: underline;
  }
}

/* ---------- Impressum-Overlay (Klarsite Single-Page-Legal-Pattern) ---------- */

.legal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--color-bg);
  overflow-y: auto;
}

.legal-overlay.is-active {
  display: block;
}

body.legal-open {
  overflow: hidden;
}

.legal-overlay-inner {
  max-width: 700px;
  margin: 0 auto;
  padding-top: max(2rem, env(safe-area-inset-top));
  padding-bottom: max(3rem, env(safe-area-inset-bottom));
  padding-left: 1.3rem;
  padding-right: 1.3rem;
  color: var(--color-light);
}

.legal-close {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: 1px solid rgba(91, 118, 144, 0.35);
  border-radius: var(--radius);
  color: var(--color-light);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  min-height: 44px;
  cursor: pointer;
  margin-bottom: 1.8rem;
}

@media (hover: hover) {
  .legal-close:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
  }
}

.legal-overlay h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.legal-overlay address {
  font-style: normal;
  line-height: 1.7;
}

.legal-overlay section {
  margin-top: 1.8rem;
}

.legal-overlay h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-teal);
  margin: 0 0 0.5rem;
}

.legal-overlay p {
  color: var(--color-secondary);
  margin: 0 0 0.8rem;
}

.legal-overlay a {
  color: var(--color-teal);
}