/* ==========================================================================
   big-digits.app — Stilvorlage für die Ratgeber- & Konfigurator-Seiten
   (/einbetten/, /en/embed-timer/, /es/insertar-temporizador/, /fr/integrer-minuteur/)
   Selbst gehostete Schriften, Hell/Dunkel-Thema, sanfte View Transitions.
   ========================================================================== */

:root {
  color-scheme: dark;
  interpolate-size: allow-keywords;
  --bg: #07090e;
  --bg-elev: #0f131d;
  --bg-card: #131824;
  --bg-input: #0b0e16;
  --fg: #f1f5f9;
  --fg-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.11);
  --border-strong: rgba(255, 255, 255, 0.2);
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --accent-soft: rgba(56, 189, 248, 0.14);
  --success: #34d399;
  --shadow-card: 0 16px 40px -12px rgba(0, 0, 0, 0.6);
  --code-bg: #06080c;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f8fafc;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f1f5f9;
  --fg: #0f172a;
  --fg-muted: #475569;
  --border: rgba(15, 23, 42, 0.11);
  --border-strong: rgba(15, 23, 42, 0.22);
  --accent: #0284c7;
  --accent-strong: #0369a1;
  --accent-soft: rgba(2, 132, 199, 0.11);
  --success: #059669;
  --shadow-card: 0 12px 32px -10px rgba(15, 23, 42, 0.08);
  --code-bg: #0f172a;
}

/* Sanfte Seitenübergänge (View Transitions, ohne main-Präfix) */
@view-transition {
  navigation: auto;
}
::view-transition-old(root) {
  animation: vt-fade-out 0.32s ease forwards;
}
::view-transition-new(root) {
  animation: vt-fade-in 0.32s ease forwards;
}
@keyframes vt-fade-out {
  to { opacity: 0; }
}
@keyframes vt-fade-in {
  from { opacity: 0; }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--fg);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #000;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

.container {
  max-width: 940px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Kopfzeile (Mobil in einer Zeile mit dem Logo, Vorgabe 22.10.) --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  view-transition-name: site-header;
}

.header-inner {
  max-width: 940px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: nowrap;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
  font-family: 'Roboto Mono', ui-monospace, monospace;
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  min-height: 44px;
  white-space: nowrap;
}

.brand-link:hover {
  color: var(--accent);
}

.brand-badge {
  display: inline-grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  padding: 5px 6px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  font-size: 0.72rem;
  line-height: 1;
  color: var(--accent);
  font-weight: 700;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* --- Sprachumschalter als Aufklappmenü (<details>) --- */
.lang-menu {
  position: relative;
}

.lang-summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--fg);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.15s ease;
}

.lang-summary::-webkit-details-marker {
  display: none;
}

.lang-summary:hover {
  border-color: var(--accent);
}

.lang-summary:active {
  transform: scale(0.97);
}

.lang-summary svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.lang-summary .chev {
  width: 14px;
  height: 14px;
  transition: transform 0.22s ease;
}

.lang-menu[open] .lang-summary .chev {
  transform: rotate(180deg);
}

.lang-list {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 165px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  z-index: 60;
  transform-origin: top right;
  animation: menu-pop 0.18s ease-out;
}

@keyframes menu-pop {
  from {
    opacity: 0;
    transform: translateY(-4px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.lang-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.92rem;
  transition: background-color 0.15s ease;
}

.lang-list a:hover {
  background: var(--accent-soft);
}

.lang-list a[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* --- Hell/Dunkel-Schalter mit morphendem Symbol --- */
.theme-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--fg);
  cursor: pointer;
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.15s ease;
}

.theme-btn:hover {
  border-color: var(--accent);
}

.theme-btn:active {
  transform: scale(0.95);
}

.theme-icon-wrap {
  position: relative;
  width: 20px;
  height: 20px;
}

.theme-icon-wrap svg {
  position: absolute;
  inset: 0;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.25s ease;
}

/* Im dunklen Modus: Sonne sichtbar (zum Umschalten auf Hell), Mond ausgeblendet */
.icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
.icon-moon {
  opacity: 0;
  transform: rotate(-75deg) scale(0.5);
}

html[data-theme="light"] .icon-sun {
  opacity: 0;
  transform: rotate(75deg) scale(0.5);
}
html[data-theme="light"] .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* --- Hero --- */
.hero {
  padding: 40px 0 24px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: clamp(1.02rem, 2vw, 1.15rem);
  color: var(--fg-muted);
  max-width: 720px;
  margin: 0;
}

/* --- Konfigurator-Karte --- */
.cfg-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: clamp(18px, 3.5vw, 30px);
  box-shadow: var(--shadow-card);
  margin: 20px 0 44px;
}

.cfg-title {
  font-size: 1.25rem;
  margin: 0 0 6px;
}

.cfg-sub {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin: 0 0 20px;
}

/* Pillen-Auswahl für den Modus mit wandernder Markierung */
.mode-tabs-wrap {
  margin-bottom: 20px;
}

.field-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
}

.mode-tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
}

.mode-pill-bg {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 8px) / 3);
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 9px;
  transition: transform 0.26s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.mode-tabs[data-active="0"] .mode-pill-bg { transform: translateX(0%); }
.mode-tabs[data-active="1"] .mode-pill-bg { transform: translateX(100%); }
.mode-tabs[data-active="2"] .mode-pill-bg { transform: translateX(200%); }

.mode-tab {
  position: relative;
  z-index: 1;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--fg-muted);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  min-height: 44px;
  padding: 8px 10px;
  border-radius: 9px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: color 0.18s ease, transform 0.15s ease;
}

.mode-tab:hover {
  color: var(--fg);
}

.mode-tab:active {
  transform: scale(0.97);
}

.mode-tab[aria-pressed="true"] {
  color: var(--fg);
}

.mode-tab svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* Einstellungs-Zeilen im Konfigurator */
.cfg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.cfg-field {
  display: flex;
  flex-direction: column;
}

.cfg-field[hidden] {
  display: none !important;
}

.cfg-input,
.cfg-select {
  appearance: none;
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-input);
  color: var(--fg);
  font: inherit;
  font-size: 0.95rem;
  transition: border-color 0.18s ease;
}

.cfg-input:focus,
.cfg-select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.preset-chip {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--fg-muted);
  border-radius: 999px;
  min-height: 32px;
  padding: 4px 11px;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease, transform 0.12s ease;
}

.preset-chip:hover {
  color: var(--fg);
  border-color: var(--accent);
}

.preset-chip:active {
  transform: scale(0.95);
}

.preset-chip.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* Live-Vorschau */
.preview-block {
  margin: 22px 0;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.preview-frame-wrap {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: #050608;
}

.preview-iframe {
  display: block;
  width: 100%;
  height: 300px;
  border: 0;
}

/* Code-Schnipsel + Kopier-Knopf */
.code-block-wrap {
  margin-top: 22px;
}

.code-box {
  position: relative;
  margin: 0;
  padding: 16px;
  border-radius: 12px;
  background: var(--code-bg);
  color: #e2e8f0;
  border: 1px solid var(--border-strong);
  font-family: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84rem;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

.code-hint {
  margin: 0;
  font-size: 0.86rem;
  color: var(--fg-muted);
}

.btn-copy {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 11px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #041019;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.18s ease, transform 0.15s ease;
}

.btn-copy:hover {
  background: #7dd3fc;
}

.btn-copy:active {
  transform: scale(0.97);
}

.btn-copy.is-copied {
  background: var(--success);
  color: #022c22;
}

.copy-icon-morph {
  position: relative;
  width: 18px;
  height: 18px;
  display: inline-block;
}

.copy-icon-morph svg {
  position: absolute;
  inset: 0;
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.icon-check {
  opacity: 0;
  transform: scale(0.5) rotate(-35deg);
}

.btn-copy.is-copied .icon-copy {
  opacity: 0;
  transform: scale(0.5) rotate(35deg);
}

.btn-copy.is-copied .icon-check {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* --- Ratgeber-Abschnitte --- */
.guide-section {
  margin: 44px 0;
}

.guide-section h2 {
  font-size: clamp(1.3rem, 2.6vw, 1.6rem);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 18px 0;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: 'Roboto Mono', monospace;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.step-card h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.step-card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.93rem;
}

/* Parameter-Tabelle */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
}

.param-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.param-table th,
.param-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.param-table tr:last-child td {
  border-bottom: 0;
}

.param-table th {
  font-weight: 600;
  color: var(--fg);
  background: var(--bg-input);
}

.param-table code {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.85rem;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--bg-input);
  color: var(--accent);
}

/* Animierte FAQ (<details>, Checkliste B.5) */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: clip;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-strong);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 14px 18px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  color: var(--fg-muted);
  transition: transform 0.26s ease;
}

.faq-item[open] summary svg {
  transform: rotate(180deg);
  color: var(--accent);
}

@supports (interpolate-size: allow-keywords) {
  .faq-item::details-content {
    block-size: 0;
    overflow: clip;
    transition: block-size 0.28s ease, content-visibility 0.28s allow-discrete;
  }
  .faq-item[open]::details-content {
    block-size: auto;
  }
}

.faq-body {
  padding: 0 18px 16px;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

.faq-body p {
  margin: 0;
}

/* Fußzeile */
.site-footer {
  margin-top: 56px;
  padding: 24px 0 44px;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--fg-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--fg-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--fg);
  text-decoration: underline;
}

@media (max-width: 520px) {
  .mode-tab {
    font-size: 0.82rem;
    padding: 6px 6px;
    gap: 4px;
  }
  .mode-tab svg {
    width: 14px;
    height: 14px;
  }
  .header-inner {
    padding: 8px 14px;
  }
  .container {
    padding: 0 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}