/* ============================================================
   VIDEO DESIGN STUDIO – dokumentation.css
   Sprint 13: TÜV-Dokumentationsseite
   Prefix: vds-doc-
   Setzt vorhandene :root-Tokens aus video-design-studio.css voraus.
   ============================================================ */

/* ── Body ───────────────────────────────────────────────────── */
body.vds-doc {
  background: var(--vds-bg);
  color: var(--vds-fg);
  font-family: var(--vds-font);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Header ─────────────────────────────────────────────────── */
.vds-doc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(to bottom, rgba(7,8,11,.94), rgba(7,8,11,.72));
  backdrop-filter: saturate(1.3) blur(16px);
  -webkit-backdrop-filter: saturate(1.3) blur(16px);
  border-bottom: 1px solid var(--vds-border);
  padding: 0 24px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.vds-doc-header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.vds-doc-header__back {
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--vds-muted);
  text-decoration: none;
  transition: color .2s;
}
.vds-doc-header__back:hover,
.vds-doc-header__back:focus-visible { color: var(--vds-teal); }

.vds-doc-header__divider {
  width: 1px;
  height: 18px;
  background: var(--vds-border-hi);
}

.vds-doc-header__title-wrap {
  display: flex;
  flex-direction: column;
}

.vds-doc-header__title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--vds-fg);
  line-height: 1.1;
}

.vds-doc-header__claim {
  font-size: 9px;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--vds-faint);
}

.vds-doc-header__meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Main layout ─────────────────────────────────────────────── */
.vds-doc-main {
  padding: 0 16px 80px;
}

.vds-doc-container {
  max-width: 940px;
  margin: 0 auto;
}

/* ── Hero ────────────────────────────────────────────────────── */
.vds-doc-hero {
  padding: 64px 0 52px;
  border-bottom: 1px solid var(--vds-border);
  margin-bottom: 48px;
}

.vds-doc-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

/* ── Badges ──────────────────────────────────────────────────── */
.vds-doc-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.vds-doc-badge--tuv {
  background: rgba(18,197,188,.14);
  color: var(--vds-teal);
  border: 1px solid rgba(18,197,188,.30);
}
.vds-doc-badge--ki {
  background: rgba(100,144,240,.12);
  color: #6490f0;
  border: 1px solid rgba(100,144,240,.30);
}
.vds-doc-badge--mvp {
  background: rgba(245,168,40,.12);
  color: #f5a828;
  border: 1px solid rgba(245,168,40,.30);
}
.vds-doc-badge--sprint {
  background: rgba(255,255,255,.06);
  color: var(--vds-muted);
  border: 1px solid var(--vds-border);
}
.vds-doc-badge--done {
  background: rgba(18,197,188,.10);
  color: var(--vds-teal);
  border: 1px solid rgba(18,197,188,.22);
  font-size: 9px;
  padding: 2px 8px;
}
.vds-doc-badge--current {
  background: rgba(245,168,40,.14);
  color: #f5a828;
  border: 1px solid rgba(245,168,40,.30);
  font-size: 9px;
  padding: 2px 8px;
}

.vds-doc-hero__title {
  font-size: clamp(26px, 5vw, 46px);
  font-weight: 900;
  letter-spacing: .02em;
  line-height: 1.1;
  color: var(--vds-fg);
  margin-bottom: 16px;
}

.vds-doc-hero__title-light {
  color: var(--vds-teal);
}

.vds-doc-hero__subtitle {
  font-size: 15px;
  color: var(--vds-muted);
  margin-bottom: 16px;
  max-width: 700px;
  line-height: 1.5;
}

.vds-doc-hero__intro {
  font-size: 16px;
  color: var(--vds-fg);
  max-width: 700px;
  line-height: 1.75;
  opacity: .88;
}

/* ── Table of Contents ──────────────────────────────────────── */
.vds-doc-toc {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--vds-border);
  border-left: 3px solid var(--vds-teal);
  border-radius: var(--vds-r);
  padding: 20px 24px;
  margin-bottom: 56px;
}

.vds-doc-toc__title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--vds-teal);
  margin-bottom: 14px;
}

.vds-doc-toc__list {
  list-style: decimal;
  columns: 2;
  column-gap: 40px;
  padding-left: 20px;
  margin: 0;
}

.vds-doc-toc__list li {
  margin-bottom: 5px;
  break-inside: avoid;
}

.vds-doc-toc__list a {
  font-size: 13px;
  color: var(--vds-muted);
  text-decoration: none;
  transition: color .18s;
}
.vds-doc-toc__list a:hover,
.vds-doc-toc__list a:focus-visible { color: var(--vds-teal); }

/* ── Section ─────────────────────────────────────────────────── */
.vds-doc-section {
  margin-bottom: 60px;
  scroll-margin-top: 70px;
}

.vds-doc-section__title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .03em;
  color: var(--vds-fg);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--vds-border);
}

.vds-doc-section__num {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--vds-teal);
  font-family: var(--vds-font-mono);
}

/* ── Card ────────────────────────────────────────────────────── */
.vds-doc-card {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--vds-border);
  border-radius: var(--vds-r-lg);
  padding: 20px 24px;
}

.vds-doc-card--highlight {
  border-color: rgba(18,197,188,.22);
  background: rgba(18,197,188,.04);
}

.vds-doc-card--warn {
  border-color: rgba(245,168,40,.22);
  background: rgba(245,168,40,.04);
}

.vds-doc-card__title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--vds-teal);
  margin-bottom: 12px;
}

.vds-doc-card--warn .vds-doc-card__title { color: #f5a828; }

/* ── Prose text ──────────────────────────────────────────────── */
.vds-doc-prose {
  font-size: 14px;
  color: var(--vds-fg);
  line-height: 1.75;
  max-width: 740px;
  opacity: .90;
}

.vds-doc-prose + .vds-doc-prose { margin-top: 10px; }

.vds-doc-lead {
  font-size: 16px;
  color: var(--vds-fg);
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 740px;
}

/* ── Highlight / callout ─────────────────────────────────────── */
.vds-doc-callout {
  background: rgba(18,197,188,.07);
  border: 1px solid rgba(18,197,188,.20);
  border-left: 3px solid var(--vds-teal);
  border-radius: var(--vds-r);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--vds-muted);
  margin-top: 16px;
  line-height: 1.6;
}

.vds-doc-callout--warn {
  background: rgba(245,168,40,.06);
  border-color: rgba(245,168,40,.20);
  border-left-color: #f5a828;
}

.vds-doc-callout strong {
  color: var(--vds-fg);
  font-weight: 700;
}

/* ── Lists ───────────────────────────────────────────────────── */
.vds-doc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.vds-doc-list li {
  padding: 7px 0 7px 22px;
  position: relative;
  font-size: 14px;
  color: var(--vds-fg);
  border-bottom: 1px solid var(--vds-border);
  line-height: 1.5;
}
.vds-doc-list li:last-child { border-bottom: none; }

.vds-doc-list li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--vds-teal);
  font-size: 7px;
  top: 11px;
}

.vds-doc-list--plain li::before { content: '–'; color: var(--vds-faint); font-size: 12px; top: 8px; }
.vds-doc-list--warn  li::before { content: '⚠'; color: #f5a828; font-size: 9px; }
.vds-doc-list--check li::before { content: '✓'; color: var(--vds-teal); font-size: 11px; top: 8px; }
.vds-doc-list--cross li::before { content: '✗'; color: rgba(255,90,90,.75); font-size: 11px; top: 8px; }

/* ── Columns ─────────────────────────────────────────────────── */
.vds-doc-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

/* ── Feature grid ────────────────────────────────────────────── */
.vds-doc-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.vds-doc-feature {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--vds-border);
  border-radius: var(--vds-r);
  padding: 12px 14px;
  font-size: 13px;
  color: var(--vds-fg);
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.4;
}

.vds-doc-feature__icon {
  color: var(--vds-teal);
  font-size: 15px;
  flex-shrink: 0;
}

/* ── Sprint grid ─────────────────────────────────────────────── */
.vds-sprint-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 10px;
}

.vds-sprint-card {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--vds-border);
  border-radius: var(--vds-r);
  padding: 14px 16px;
}

.vds-sprint-card--current {
  border-color: rgba(245,168,40,.35);
  background: rgba(245,168,40,.05);
}

.vds-sprint-card__num {
  display: block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .16em;
  font-family: var(--vds-font-mono);
  color: var(--vds-teal);
  margin-bottom: 5px;
  text-transform: uppercase;
}

.vds-sprint-card--current .vds-sprint-card__num { color: #f5a828; }

.vds-sprint-card__name {
  font-size: 12px;
  font-weight: 700;
  color: var(--vds-fg);
  margin-bottom: 4px;
  line-height: 1.3;
}

.vds-sprint-card__desc {
  font-size: 11px;
  color: var(--vds-muted);
  line-height: 1.45;
}

.vds-sprint-card__badge {
  margin-top: 8px;
}

/* ── Architecture diagram ────────────────────────────────────── */
.vds-arch {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--vds-border);
  border-radius: var(--vds-r-lg);
  padding: 28px 24px;
  overflow-x: auto;
}

.vds-arch__flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 520px;
}

.vds-arch__box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  text-align: center;
  border: 1px solid;
  line-height: 1.3;
}

.vds-arch__box--user {
  background: rgba(18,197,188,.14);
  border-color: rgba(18,197,188,.38);
  color: var(--vds-teal);
  font-size: 13px;
  font-weight: 700;
  padding: 10px 28px;
}

.vds-arch__box--studio {
  background: rgba(100,144,240,.12);
  border-color: rgba(100,144,240,.35);
  color: #6490f0;
  padding: 12px 32px;
  font-size: 14px;
  font-weight: 800;
}

.vds-arch__box--module {
  background: rgba(255,255,255,.05);
  border-color: var(--vds-border-hi);
  color: var(--vds-muted);
  font-size: 11px;
  padding: 7px 12px;
}

.vds-arch__box--storage {
  background: rgba(245,168,40,.09);
  border-color: rgba(245,168,40,.28);
  color: #f5a828;
  font-size: 11px;
  padding: 7px 12px;
}

.vds-arch__box--export {
  background: rgba(18,197,188,.08);
  border-color: rgba(18,197,188,.22);
  color: var(--vds-teal);
  font-size: 11px;
  padding: 7px 12px;
}

.vds-arch__arrow {
  color: var(--vds-faint);
  font-size: 18px;
  line-height: 1;
  text-align: center;
}

.vds-arch__row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.vds-arch__label {
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--vds-faint);
  text-align: center;
  margin-top: 2px;
  margin-bottom: 4px;
}

.vds-arch__tech-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--vds-border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.vds-arch__tech-tag {
  font-size: 10px;
  font-family: var(--vds-font-mono);
  color: var(--vds-faint);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--vds-border);
  border-radius: 4px;
  padding: 3px 8px;
}

/* ── KI boxes ────────────────────────────────────────────────── */
.vds-doc-ki-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.vds-doc-ki-box {
  background: rgba(100,144,240,.07);
  border: 1px solid rgba(100,144,240,.20);
  border-radius: var(--vds-r);
  padding: 16px;
}

.vds-doc-ki-box__num {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .16em;
  font-family: var(--vds-font-mono);
  color: #6490f0;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.vds-doc-ki-box__title {
  font-size: 13px;
  font-weight: 700;
  color: var(--vds-fg);
  margin-bottom: 4px;
}

.vds-doc-ki-box__desc {
  font-size: 11px;
  color: var(--vds-muted);
  line-height: 1.55;
}

/* ── HitL list ───────────────────────────────────────────────── */
.vds-doc-hitl-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.vds-doc-hitl-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--vds-border);
  border-radius: var(--vds-r);
  padding: 11px 14px;
  font-size: 13px;
  color: var(--vds-fg);
  line-height: 1.5;
}

.vds-doc-hitl-item__num {
  font-size: 10px;
  font-weight: 700;
  font-family: var(--vds-font-mono);
  color: var(--vds-teal);
  flex-shrink: 0;
  padding-top: 1px;
  min-width: 18px;
}

/* ── Screenshot placeholders ─────────────────────────────────── */
.vds-doc-screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.vds-doc-screenshot {
  aspect-ratio: 4 / 3;
  background: rgba(255,255,255,.03);
  border: 1px dashed rgba(255,255,255,.12);
  border-radius: var(--vds-r);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 16px;
  text-align: center;
}

.vds-doc-screenshot__icon {
  font-size: 26px;
  opacity: .45;
}

.vds-doc-screenshot__label {
  font-size: 11px;
  font-weight: 600;
  color: var(--vds-muted);
  letter-spacing: .07em;
}

.vds-doc-screenshot__note {
  font-size: 10px;
  color: var(--vds-faint);
}

/* ── Table ───────────────────────────────────────────────────── */
.vds-doc-table-wrap {
  overflow-x: auto;
}

.vds-doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  color: var(--vds-fg);
}

.vds-doc-table th {
  text-align: left;
  padding: 8px 14px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--vds-teal);
  border-bottom: 1px solid var(--vds-border-hi);
  white-space: nowrap;
}

.vds-doc-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--vds-border);
  vertical-align: top;
  line-height: 1.45;
}

.vds-doc-table tr:last-child td { border-bottom: none; }
.vds-doc-table tr:hover td { background: rgba(255,255,255,.02); }

/* ── Doc footer ──────────────────────────────────────────────── */
.vds-doc-footer {
  border-top: 1px solid var(--vds-border);
  background: rgba(7,8,11,.80);
  padding: 24px;
  text-align: center;
}

.vds-doc-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 12px;
  color: var(--vds-muted);
  margin-bottom: 8px;
}

.vds-doc-footer__sep { color: var(--vds-faint); }

.vds-doc-footer__link {
  color: var(--vds-teal);
  text-decoration: none;
  font-weight: 600;
  transition: color .2s;
}
.vds-doc-footer__link:hover,
.vds-doc-footer__link:focus-visible { color: var(--vds-fg); }

.vds-doc-footer__note {
  font-size: 11px;
  color: var(--vds-faint);
}

/* ── Spacer util ─────────────────────────────────────────────── */
.vds-doc-spacer { margin-top: 20px; }
.vds-doc-spacer--sm { margin-top: 12px; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 660px) {
  .vds-doc-cols            { grid-template-columns: 1fr; }
  .vds-doc-toc__list       { columns: 1; }
  .vds-sprint-grid         { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .vds-doc-feature-grid    { grid-template-columns: 1fr; }
  .vds-doc-ki-grid         { grid-template-columns: 1fr; }
  .vds-doc-screenshots     { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .vds-doc-header__claim   { display: none; }
}

/* ── Reduced motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}