/* Pages de connexion (étape 45) : connexion/inscription, choix du pseudo, retour d'email,
   page hors ligne. Feuille autonome (avec ui.css pour les polices et la palette) : elle ne
   touche à AUCUNE autre page. Pensée téléphone d'abord : gros champs (16 px pour éviter le
   zoom d'iOS), gros boutons, un seul chemin évident, aides écrites sous les champs. */

body.login {
  --bg-0: #072217;
  --bg-1: #0d3a26;
  --felt-hi: #2a9a5c;
  --card-bg: rgba(10, 40, 26, 0.78);
  --card-line: rgba(240, 199, 94, 0.22);
  --field-bg: rgba(0, 0, 0, 0.3);
  --field-line: rgba(255, 255, 255, 0.18);
  --muted: #b9cbbf;
  --ok: #8fe0a8;
  --err: #ffb3a7;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  color: var(--paper);
  background:
    radial-gradient(120% 70% at 50% -10%, rgba(42, 154, 92, 0.55) 0%, transparent 60%),
    radial-gradient(90% 60% at 50% 110%, rgba(216, 161, 44, 0.12) 0%, transparent 70%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%) fixed;
}
body.login [hidden] { display: none !important; }

.login-shell {
  width: min(100%, 440px);
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ---------------------------------------------------------------- en-tête */
.brand { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; padding-top: 8px; }
.brand-art { position: relative; width: 210px; height: 112px; margin-bottom: -46px; pointer-events: none; }
.brand-art img {
  position: absolute; left: 50%; bottom: 0; width: 66px; border-radius: 6px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.45); transform-origin: 50% 100%;
}
.brand-art img:nth-child(1) { transform: translateX(-50%) rotate(-24deg) translateY(-6px); }
.brand-art img:nth-child(2) { transform: translateX(-50%) rotate(-8deg) translateY(-14px); }
.brand-art img:nth-child(3) { transform: translateX(-50%) rotate(8deg) translateY(-14px); }
.brand-art img:nth-child(4) { transform: translateX(-50%) rotate(24deg) translateY(-6px); }
.brand-logo {
  position: relative; width: 76px; height: 76px; border-radius: 20px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(240, 199, 94, 0.35);
}
.brand h1 { font-size: clamp(1.7rem, 7vw, 2.1rem); margin: 6px 0 0; text-wrap: balance; }
.tagline { margin: 0; color: var(--muted); font-size: 0.95rem; line-height: 1.45; max-width: 32ch; }
.tagline b { color: var(--paper); font-weight: 600; }

/* ---------------------------------------------------------------- carte */
.login-card {
  background: var(--card-bg);
  border: 1px solid var(--card-line);
  border-radius: 20px;
  padding: 20px 18px 18px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.login-card h2 { margin: 0; font-size: 1.25rem; color: var(--accent-bright); }
.login-card > p { margin: 0; color: var(--muted); line-height: 1.5; }

/* Deux onglets clairs : « J'ai déjà un compte » / « Créer un compte ». */
.seg {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px;
  border-radius: 14px; background: rgba(0, 0, 0, 0.35);
}
.seg button {
  font: inherit; font-weight: 600; font-size: 0.95rem; line-height: 1.2;
  min-height: 48px; padding: 8px; border: 0; border-radius: 11px;
  background: transparent; color: var(--muted); cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.seg button.active { background: var(--gold-grad); color: var(--ink); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35); }
.seg button:not(.active):hover { color: var(--paper); }

/* ---------------------------------------------------------------- formulaires */
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.fl { display: flex; flex-direction: column; gap: 6px; }
.fl > .lbl { font-weight: 600; font-size: 0.95rem; }
.help { font-size: 0.85rem; color: var(--muted); margin: 0; line-height: 1.4; }
.help.ok { color: var(--ok); }
.help.bad { color: var(--err); }

.field {
  display: flex; align-items: center; gap: 10px;
  min-height: 54px; padding: 0 6px 0 14px;
  border: 1.5px solid var(--field-line); border-radius: 14px; background: var(--field-bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field:focus-within { border-color: var(--accent-bright); box-shadow: 0 0 0 4px rgba(240, 199, 94, 0.22); }
.field > svg { flex: none; color: rgba(246, 244, 239, 0.55); }
.field:focus-within > svg { color: var(--accent-bright); }
.field input {
  flex: 1; min-width: 0; height: 52px; padding: 0; border: 0; background: none; color: var(--paper);
  font: inherit; font-size: 16px; /* 16 px : pas de zoom automatique sur iPhone */
}
.field input::placeholder { color: rgba(246, 244, 239, 0.4); }
.field input:focus { outline: none; }
.pwd-eye {
  flex: none; display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 0; border-radius: 10px; background: none;
  color: var(--muted); cursor: pointer;
}
.pwd-eye:hover, .pwd-eye:focus-visible { color: var(--accent-bright); background: rgba(255, 255, 255, 0.06); }

.check {
  display: flex; align-items: flex-start; gap: 12px; font-size: 0.95rem; line-height: 1.4; cursor: pointer;
}
.check input { flex: none; width: 22px; height: 22px; margin: 0; accent-color: var(--accent); cursor: pointer; }

.btn-main {
  font: inherit; font-weight: 700; font-size: 1.05rem; letter-spacing: 0.01em;
  min-height: 56px; padding: 12px 18px; border: 0; border-radius: 14px;
  background: var(--gold-grad); color: var(--ink); cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: filter 0.15s, transform 0.1s;
}
.btn-main:hover { filter: brightness(1.06); }
.btn-main:active { transform: translateY(1px); }
.btn-main:disabled { opacity: 0.6; cursor: wait; }

.linkbtn {
  align-self: center; font: inherit; font-size: 0.95rem; color: var(--accent-bright);
  background: none; border: 0; padding: 10px; min-height: 44px; cursor: pointer; text-decoration: underline;
  text-underline-offset: 3px;
}

/* Connexion sociale (boutons créés par le script, classe .btn-social de l'étape 40). */
.social { display: flex; flex-direction: column; gap: 10px; }
.btn-social {
  display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%;
  min-height: 54px; padding: 10px 14px; font: inherit; font-weight: 600; font-size: 1rem;
  border: 1.5px solid rgba(255, 255, 255, 0.22); border-radius: 14px;
  background: #f6f4ef; color: #1c2321; cursor: pointer; transition: filter 0.15s, transform 0.1s;
}
.btn-social:hover { filter: brightness(0.95); }
.btn-social:active { transform: translateY(1px); }
.btn-social:disabled { opacity: 0.6; cursor: wait; }
.btn-social svg { flex: none; width: 22px; height: 22px; }
.sep {
  display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--muted);
}
.sep::before, .sep::after { content: ''; flex: 1; height: 1px; background: rgba(255, 255, 255, 0.16); }

details.privacy { font-size: 0.88rem; color: var(--muted); line-height: 1.5; }
details.privacy summary { cursor: pointer; color: var(--accent-bright); padding: 6px 0; }
details.privacy a { color: inherit; }

/* Message : encadré lisible, vert ou rouge, annoncé aux lecteurs d'écran. */
.msg { margin: 0; min-height: 0; font-size: 0.95rem; line-height: 1.45; border-radius: 12px; }
.msg:empty { display: none; }
.msg.error, .msg.ok { padding: 12px 14px; }
.msg.error { color: #ffd9d2; background: rgba(212, 85, 63, 0.18); border: 1px solid rgba(212, 85, 63, 0.5); }
.msg.ok { color: #d8f5e1; background: rgba(76, 201, 122, 0.14); border: 1px solid rgba(76, 201, 122, 0.45); }

.devnote {
  margin: 0; font-size: 0.85rem; color: #ffe1a0; background: rgba(216, 161, 44, 0.12);
  border: 1px dashed rgba(240, 199, 94, 0.45); border-radius: 12px; padding: 10px 12px;
}

/* ---------------------------------------------------------------- appli installable */
.install-card {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: 16px;
  background: rgba(0, 0, 0, 0.32); border: 1px solid var(--card-line);
}
.install-card img { flex: none; border-radius: 11px; }
.install-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; font-size: 0.88rem; color: var(--muted); line-height: 1.4; }
.install-text > b { color: var(--paper); font-size: 0.95rem; }
.install-text svg { vertical-align: -3px; color: var(--accent-bright); }
.install-btn {
  flex: none; font: inherit; font-weight: 700; min-height: 44px; padding: 8px 16px; border: 0;
  border-radius: 12px; background: var(--gold-grad); color: var(--ink); cursor: pointer;
}

.login-foot { text-align: center; font-size: 0.85rem; color: var(--muted); display: flex; flex-direction: column; gap: 6px; }
.login-foot nav { display: flex; justify-content: center; gap: 18px; }
.login-foot a { color: var(--muted); text-underline-offset: 3px; }
.login-foot a:hover { color: var(--accent-bright); }

/* Écran d'attente (retour d'email) : roue discrète. */
.spinner {
  width: 34px; height: 34px; border-radius: 50%; align-self: center;
  border: 3px solid rgba(240, 199, 94, 0.25); border-top-color: var(--accent-bright);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.seg button:focus-visible, .btn-main:focus-visible, .btn-social:focus-visible, .linkbtn:focus-visible,
.install-btn:focus-visible, .check input:focus-visible {
  outline: 3px solid var(--accent-bright); outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 3s; }
  .btn-main, .btn-social { transition: none; }
}

/* Grands écrans : un peu plus d'air. */
@media (min-width: 720px) {
  .login-shell { padding-top: 6vh; gap: 22px; }
  .login-card { padding: 26px 26px 22px; }
}

/* Logo GitHub (clair à l'origine, étape 40) : foncé sur le bouton clair. */
.btn-social svg path[fill="#f6f4ef"] { fill: #1c2321; }

/* Titre lu par les lecteurs d'écran seulement. */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }