@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Geist:wght@300;400;500&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #000;
  --surf:        #0a0a0a;
  --b1:          rgba(255,255,255,0.12);
  --text:        #fff;
  --text-2:      rgba(255,255,255,0.6);
  --text-3:      rgba(255,255,255,0.3);
  --danger:      rgba(239,68,68,0.1);
  --danger-text: #f87171;
  --success:     rgba(74,222,128,0.1);
  --success-text:#4ade80;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Geist', 'Inter', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
  padding: 2rem;
  overflow: hidden;
}

/* ── Lien retour ── */
.back {
  position: fixed;
  top: 1.5rem; left: 1.5rem;
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  transition: color .15s;
  z-index: 10;
}
.back:hover { color: var(--text); }

/* ── Formulaire centré ── */
.wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeUp .5s cubic-bezier(.16,1,.3,1) both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Logo */
.logo {
  width: 46px; height: 46px;
  background: var(--surf);
  border: 1px solid var(--b1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -.04em;
  margin-bottom: 1.4rem;
}

/* Titre */
.title {
  font-family: 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.03em;
  text-align: center;
  margin-bottom: 2.4rem;
}

.sub {
  font-size: .82rem;
  color: var(--text-3);
  text-align: center;
  margin-bottom: 1.8rem;
}
.sub a {
  color: var(--text-2);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: var(--b1);
  text-underline-offset: 3px;
  transition: color .15s;
}
.sub a:hover { color: var(--text); }

/* Tabs */
.tabs {
  display: flex;
  width: 100%;
  background: var(--surf);
  border: 1px solid var(--b1);
  border-radius: 10px;
  padding: 3px;
  gap: 3px;
  margin-bottom: 1.4rem;
}
.tab {
  flex: 1;
  padding: .5rem;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-3);
  font-family: 'Inter', sans-serif;
  font-size: .8rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all .15s;
}
.tab.active {
  background: var(--b1);
  color: var(--text);
  border-color: var(--b1);
}

/* Formulaire */
.form { display: flex; flex-direction: column; gap: .9rem; width: 100%; }
.field { display: flex; flex-direction: column; gap: .38rem; }
.field label {
  font-size: .72rem;
  font-weight: 500;
  color: var(--text-3);
}
.field input {
  background: var(--surf);
  border: 1px solid var(--b1);
  border-radius: 10px;
  padding: .75rem 1rem;
  color: var(--text);
  font-family: 'Geist', sans-serif;
  font-size: .9rem;
  outline: none;
  transition: border-color .15s;
  width: 100%;
  -webkit-appearance: none;
}
.field input:focus { border-color: var(--b1); background: var(--surf); }
.field input::placeholder { color: var(--text-3); }
.field-hint { font-family: 'Geist', sans-serif; font-size: .65rem; color: var(--text-3); line-height: 1.5; }

/* Règles mot de passe */
.pw-rules { display: flex; flex-direction: column; gap: .25rem; margin-top: .3rem; }
.pw-rule { display: flex; align-items: center; gap: .4rem; font-size: .68rem; color: var(--text-3); transition: color .2s; }
.pw-dot  { width: 4px; height: 4px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.pw-rule.valid { color: var(--success-text); }

/* Messages */
.msg { font-size: .76rem; font-weight: 500; text-align: center; padding: .6rem .8rem; border-radius: 8px; display: none; width: fit-content; align-self: center; }
.msg.error   { display: block; background: var(--danger); color: var(--danger-text); border: 1px solid var(--danger-text); }
.msg.success { display: block; background: var(--success); color: var(--success-text); border: 1px solid var(--success-text); }

/* Bouton */
.btn {
  width: 100%;
  padding: .78rem;
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s;
  margin-top: .1rem;
}
.btn:hover { opacity: .88; }
.btn:disabled { opacity: .3; cursor: not-allowed; }

/* Footer */
.footer {
  margin-top: 1.5rem;
  font-size: .7rem;
  color: var(--text-3);
  text-align: center;
}

@media (max-width: 480px) {
  body { padding: 1.5rem; }
}

/* Champ avec icône */
.input-wrap { position: relative; }
.input-wrap input { padding-right: 7rem; }
.input-status {
  position: absolute;
  right: .9rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: .72rem;
  font-weight: 500;
  pointer-events: none;
  white-space: nowrap;
}