/* ═══════════════════════════════════════════════════════════════
   Quiz Ayiti — AUTHENTIFICATION (connexion / inscription)
   Structure inspirée de Terrier-Rouge, couleurs Quiz Ayiti.
   ═══════════════════════════════════════════════════════════════ */
:root {
    --a-blue:      #1b53f0;
    --a-blue-dark: #1443cc;
    --a-blue-soft: #eef2fe;
    --a-ink:       #0e1a33;
    --a-muted:     #5a6478;
    --a-line:      #e8ebf3;
    --a-paper:     #f4f7ff;
}
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--a-paper);
    background-image: radial-gradient(circle at 15% 10%, #e3ebff 0%, transparent 45%),
                      radial-gradient(circle at 85% 90%, #e8f0ff 0%, transparent 45%);
    color: var(--a-ink);
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 24px 16px;
}

.auth-card {
    background: #fff;
    border: 1px solid var(--a-line);
    border-radius: 24px;
    padding: 40px 32px;
    width: 100%;
    max-width: 430px;
    box-shadow: 0 18px 50px rgba(14, 26, 51, .10);
}
.auth-card--wide { max-width: 480px; }

/* En-tête */
.auth-head { text-align: center; margin-bottom: 28px; }
.auth-head img { height: 54px; width: auto; margin: 0 auto 14px; display: block; }
.auth-head h1 {
    font-family: 'Poppins', 'Inter', sans-serif;
    font-size: 1.55rem; font-weight: 800; letter-spacing: -.02em; color: var(--a-ink);
}
.auth-head h1 .hl { color: var(--a-blue); }
.auth-head p { font-size: .85rem; color: var(--a-muted); margin-top: 5px; }

/* Champs */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: .8rem; font-weight: 700; color: var(--a-ink); margin-bottom: 6px; }
.form-input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--a-line);
    border-radius: 12px;
    font-family: inherit; font-size: .93rem; color: var(--a-ink);
    background: #fff; outline: none;
    transition: border-color .18s ease, box-shadow .18s ease;
}
.form-input::placeholder { color: #9aa3b5; }
.form-input:focus { border-color: var(--a-blue); box-shadow: 0 0 0 4px rgba(27, 83, 240, .12); }

.input-wrap { position: relative; }
.input-wrap .form-input { padding-right: 46px; }
.eye-btn {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: 0; cursor: pointer; color: var(--a-muted);
    padding: 4px; display: flex;
}
.eye-btn:hover { color: var(--a-blue); }

/* Cases à cocher */
.form-check { display: flex; align-items: center; gap: 9px; margin-bottom: 18px; }
.form-check--start { align-items: flex-start; }
.form-check input { accent-color: var(--a-blue); width: 16px; height: 16px; flex-shrink: 0; cursor: pointer; }
.form-check--start input { margin-top: 2px; }
.form-check label { font-size: .8rem; color: var(--a-muted); cursor: pointer; line-height: 1.5; }

/* Sélecteur de classe */
.classe-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.classe-opt { position: relative; cursor: pointer; }
.classe-opt input { position: absolute; opacity: 0; pointer-events: none; }
.classe-opt span {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 12px 6px;
    border: 1.5px solid var(--a-line); border-radius: 12px;
    background: #fff; text-align: center;
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.classe-opt span b { font-size: .85rem; font-weight: 700; color: var(--a-ink); }
.classe-opt span small { font-size: .68rem; color: var(--a-muted); }
.classe-opt:hover span { border-color: var(--a-blue); transform: translateY(-2px); }
.classe-opt input:checked + span {
    border-color: var(--a-blue); background: var(--a-blue-soft);
    box-shadow: 0 0 0 3px rgba(27, 83, 240, .12);
}
.classe-opt input:checked + span b { color: var(--a-blue); }

/* Boutons */
.btn-primary {
    width: 100%; padding: 13px;
    background: var(--a-blue); color: #fff;
    border: 0; border-radius: 999px;
    font-family: inherit; font-size: .95rem; font-weight: 700; cursor: pointer;
    box-shadow: 0 8px 20px rgba(27, 83, 240, .28);
    transition: background .18s ease, transform .18s ease;
}
.btn-primary:hover { background: var(--a-blue-dark); transform: translateY(-2px); }

.btn-social {
    width: 100%; padding: 12px;
    border: 1.5px solid var(--a-line); border-radius: 999px;
    background: #fff; color: var(--a-ink);
    font-family: inherit; font-size: .9rem; font-weight: 600;
    cursor: pointer; text-decoration: none;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.btn-social:hover { border-color: var(--a-blue); background: var(--a-blue-soft); transform: translateY(-2px); }
.btn-social svg { width: 20px; height: 20px; }

/* Séparateur */
.divider {
    display: flex; align-items: center; gap: 12px;
    margin: 24px 0;
    color: var(--a-muted); font-size: .72rem;
    text-transform: uppercase; letter-spacing: .09em;
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--a-line); }

/* Alertes */
.alert { padding: 12px 16px; border-radius: 12px; margin-bottom: 20px; font-size: .82rem; line-height: 1.5; }
.alert-error   { background: #fdeaee; color: #b42318; }
.alert-success { background: #eafaf2; color: #0b7a4b; }
.alert p + p { margin-top: 4px; }

/* Liens bas de carte */
.auth-alt { text-align: center; margin-top: 18px; font-size: .84rem; color: var(--a-muted); }
.auth-alt a { color: var(--a-blue); font-weight: 700; text-decoration: none; }
.auth-alt a:hover { text-decoration: underline; }
.back-link { display: block; text-align: center; margin-top: 18px; font-size: .8rem; color: var(--a-muted); text-decoration: none; }
.back-link:hover { color: var(--a-blue); }

/* Responsive */
@media (max-width: 480px) {
    .auth-card { padding: 30px 22px; border-radius: 20px; }
    .auth-head img { height: 46px; }
    .auth-head h1 { font-size: 1.35rem; }
    .classe-picker { grid-template-columns: 1fr; }
    .classe-opt span { flex-direction: row; justify-content: center; gap: 6px; padding: 11px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }