/* Thème sombre, par défaut. La couleur d'accent vient de /static/brand/theme.css, généré par le serveur à partir
   de BRAND_COLOR (voir brand.go) ; fond, surfaces, bordures et texte secondaire en prennent la teinte : une
   couleur suffit pour un thème cohérent. Thème clair : mêmes variables, autres valeurs, dans light.css. */
:root {
  color-scheme: dark;
  --brand-bg: color-mix(in oklab, var(--brand-accent) 6%, #04060c);
  --brand-header-bg: color-mix(in oklab, var(--brand-accent) 8%, #05070e);
  --brand-surface: color-mix(in oklab, var(--brand-accent) 12%, #070a12);
  --brand-field-bg: color-mix(in oklab, var(--brand-accent) 6%, #04060c);
  --brand-border: color-mix(in oklab, var(--brand-accent) 22%, #121826);
  --brand-text: #ffffff;
  --brand-muted: color-mix(in oklab, var(--brand-accent) 18%, #a3acbd);
  --brand-danger: #ff6b6b;
  --brand-radius: 24px;
  --brand-control-radius: 8px;
  --brand-button-radius: 24px;
  --brand-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
  --brand-logo-height: 44px;
  /* Police de l'appareil : Segoe UI sous Windows, San Francisco sur Mac et iPhone, Roboto sous Android. */
  --brand-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Rendu sobre d'outil : fond uni, cartes pleines, un seul bleu plein (le bouton d'action). */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

:root {
  --accent-soft: color-mix(in srgb, var(--brand-accent) 14%, transparent);
  --accent-ring: color-mix(in srgb, var(--brand-accent) 35%, transparent);
  --hairline: rgba(255, 255, 255, 0.07);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --tint-0: rgba(255, 255, 255, 0.02);
  --tint-2: rgba(255, 255, 255, 0.04);
  --tint-hover: rgba(255, 255, 255, 0.06);
  --placeholder: color-mix(in oklab, var(--brand-accent) 12%, #6b7280);
  --faint: color-mix(in oklab, var(--brand-accent) 12%, #6b7280);
  --danger-text: #ffb3b3;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--brand-bg);
  color: var(--brand-text);
  font-family: var(--brand-font);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

svg { flex: none; }
strong { color: var(--brand-text); }
.muted { color: var(--brand-muted); }
.center { text-align: center; }

/* Barre du haut */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--brand-header-bg);
  border-bottom: 1px solid var(--hairline);
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--brand-text); text-decoration: none; font-weight: 700; }
.brand img { height: 36px; width: auto; display: block; }

/* En-tête de page */
.page { flex: 1; width: 100%; max-width: 560px; margin: 0 auto; padding: 48px 20px 24px; }
.hero { text-align: center; margin-bottom: 24px; }
.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.lead { margin: 16px auto 0; max-width: 34rem; color: var(--brand-muted); font-size: 1.05rem; }

/* Carte */
.panel {
  padding: 28px;
  border: 1px solid var(--hairline);
  border-radius: var(--brand-radius);
  background: var(--brand-surface);
  box-shadow: var(--brand-shadow);
  animation: rise 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.panel > p:not(.error) { margin: 0 0 4px; } /* le message d'erreur garde son espace sous le bouton */
.panel-title { margin: 0 0 2px; font-size: 1.15rem; font-weight: 700; }

/* Champs : le cadre porte la bordure et l'anneau de focus */
.field-label { display: block; margin: 0 0 8px; padding: 0; color: var(--brand-muted); font-size: 0.85rem; font-weight: 600; }
.input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--brand-border);
  border-radius: 14px;
  background: var(--brand-field-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input-wrap:focus-within { border-color: var(--brand-accent); box-shadow: 0 0 0 4px var(--accent-ring); }
.input {
  flex: 1;
  min-width: 0;
  height: 42px;
  padding: 0 10px;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--brand-text);
  font: inherit;
}
.input::placeholder { color: var(--placeholder); }
.mono { font-family: var(--mono); font-size: 0.95rem; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--brand-muted);
  cursor: pointer;
}
.icon-btn:hover { background: var(--tint-hover); color: var(--brand-text); }
.icon-btn:focus-visible { outline: 2px solid var(--brand-accent); outline-offset: 0; }
.icon-btn[aria-pressed="true"] { color: var(--brand-accent); }
.icon-btn[aria-pressed="false"] .slash { display: none; }

/* Choix de la durée : contrôle segmenté */
.segmented { min-width: 0; margin: 22px 0 0; padding: 0; border: 0; }
.segmented-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--brand-border);
  border-radius: 14px;
  background: var(--brand-field-bg);
}
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label {
  padding: 9px 8px;
  border-radius: 10px;
  color: var(--brand-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.segmented label:hover { color: var(--brand-text); }
/* Durée choisie en couleur douce : le seul aplat de couleur de la page est le bouton, quand il s'allume. */
.segmented input:checked + label {
  background: var(--accent-soft);
  color: var(--brand-text);
  box-shadow: inset 0 0 0 1px var(--accent-ring);
}
.segmented input:focus-visible + label { outline: 2px solid var(--brand-text); outline-offset: 2px; }

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--brand-button-radius);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primary {
  background: linear-gradient(180deg, var(--brand-accent-hover), var(--brand-accent));
  color: var(--brand-on-accent);
  box-shadow: 0 10px 24px -12px var(--brand-accent);
  transition: background 0.25s, color 0.25s, box-shadow 0.25s, transform 0.15s;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px var(--brand-accent); }
.btn-primary:active { transform: none; }
/* Bouton éteint tant que le champ du secret est vide, allumé dès la première frappe. */
.panel:has(#secret:placeholder-shown) .btn-primary {
  background: var(--brand-field-bg);
  color: var(--brand-muted);
  box-shadow: none;
  border-color: var(--brand-border);
}
.btn-ghost { background: transparent; color: var(--brand-text); border-color: var(--brand-border); }
.btn-ghost:hover { border-color: var(--brand-accent); color: var(--brand-accent); }
.btn:focus-visible { outline: 2px solid var(--brand-text); outline-offset: 3px; }
.btn:disabled { opacity: 0.6; cursor: progress; transform: none; }
.btn-block { width: 100%; margin-top: 24px; }
.btn-inline { flex: none; height: 42px; padding: 0 16px; border-radius: 10px; font-size: 0.92rem; }

/* États */
.status { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.status p { margin: 0; }
.status-icon, .hero-icon {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--accent-ring);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--brand-accent);
}
.hero-icon { width: 64px; height: 64px; margin-bottom: 16px; border-radius: 18px; }
.hero-icon svg { width: 28px; height: 28px; }
.muted-icon { border-color: var(--hairline); background: var(--tint-2); color: var(--brand-muted); }
.error {
  margin: 16px 0 0;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--brand-danger) 35%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--brand-danger) 12%, transparent);
  color: var(--danger-text);
  font-weight: 600;
  text-align: center;
}

/* Garanties */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.features li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 10px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: var(--tint-0);
  color: var(--brand-muted);
  font-size: 0.82rem;
  text-align: center;
}
.features svg { width: 20px; height: 20px; color: var(--brand-accent); }

.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 32px 20px 40px;
  color: var(--faint);
  font-size: 0.82rem;
  text-align: center;
}
.footer svg { width: 16px; height: 16px; color: var(--brand-accent); }

@keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

@media (max-width: 520px) {
  .panel { padding: 22px 18px; }
  .features { grid-template-columns: 1fr; }
  .features li { flex-direction: row; text-align: left; }
}

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