:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #dbeafe;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --success: #16a34a;
    --warning: #d97706;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.06);
    --radius: 12px;
}

* { box-sizing: border-box; }

/* Fond explicite sur html pour éviter écran noir en mode standalone iOS
   (au-delà du <body>, le <html> reste visible derrière le notch/safe area). */
html {
    background: #f8fafc;
    -webkit-text-size-adjust: 100%;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

body {
    display: flex;
    flex-direction: column;
}

/* Topbar */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: var(--shadow);
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    font-size: 1.05rem;
}
.brand .logo { font-size: 1.4rem; }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.nav-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}
.install-btn {
    background: var(--primary);
    color: white !important;
    border: none;
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
}
.install-btn:hover { background: var(--primary-hover); text-decoration: none !important; }
.nav-link:hover { text-decoration: underline; }
.nav-discreet { color: var(--text-muted); }
.inline-form { display: inline; margin: 0; }
.link-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 0;
    font-family: inherit;
}
.link-btn:hover { color: var(--danger); text-decoration: underline; }

/* Container */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 60px;
    width: 100%;
    flex: 1;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 28px;
}
.hero h1 {
    margin: 0 0 6px;
    font-size: 1.9rem;
    font-weight: 700;
}
.hero .subtitle {
    color: var(--text-muted);
    margin: 0;
    font-size: 1.05rem;
}
.hero-admin { text-align: left; }

/* KPIs */
.kpis {
    display: flex;
    gap: 12px;
    margin-top: 18px;
    flex-wrap: wrap;
}
.kpi {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    flex: 1;
    min-width: 110px;
    text-align: center;
}
.kpi-num { display: block; font-size: 1.7rem; font-weight: 700; }
.kpi-lbl { display: block; color: var(--text-muted); font-size: 0.9rem; }
.kpi-ok .kpi-num { color: var(--success); }
.kpi-warn .kpi-num { color: var(--warning); }
.admin-actions { margin-top: 14px; }

/* Day cards */
.day-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 18px 22px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}
.day-title {
    margin: 0 0 14px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: capitalize;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

/* Slot grid (parents) */
.slot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 12px;
}
.slot {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    text-align: center;
    transition: transform 0.1s, box-shadow 0.1s;
}
.slot-free { background: #f0f9ff; border-color: #bae6fd; }
.slot-free:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,99,235,0.12); }
.slot-booked { background: #f1f5f9; border-color: var(--border); opacity: 0.85; }
.slot-time {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
}
.slot-duration { font-size: 0.8rem; font-weight: 400; color: var(--text-muted); }
.slot-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}
.slot-booked-name {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Slot list (admin) */
.slot-list { display: flex; flex-direction: column; gap: 8px; }
.slot-row {
    display: grid;
    grid-template-columns: 160px 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fafafa;
}
.slot-row.is-booked { background: #fef3c7; border-color: #fde68a; }
.slot-row-time { font-weight: 600; }
.slot-row-actions { display: flex; gap: 6px; }
.slot-row-actions form { display: inline; margin: 0; }
.status { font-size: 0.92rem; }
.status-free { color: var(--success); font-weight: 500; }
.status-booked { color: var(--warning); }
.badge {
    display: inline-block;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 999px;
    padding: 1px 8px;
    font-size: 0.75rem;
    margin-left: 6px;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.1s, transform 0.05s;
    font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: #f1f5f9; }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fecaca; }
.btn-sm { padding: 5px 10px; font-size: 0.85rem; }
.btn-wide { width: 100%; }

/* Modal */
.modal {
    border: none;
    border-radius: var(--radius);
    padding: 0;
    max-width: 420px;
    width: 92%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
}
.modal::backdrop { background: rgba(15,23,42,0.55); }
.modal-form {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.modal-form h3 { margin: 0; font-size: 1.2rem; }
.modal-subtitle { margin: 0; color: var(--text-muted); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 6px; }
.warning {
    margin: 0;
    background: #fef3c7;
    color: #78350f;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 0.88rem;
}

/* Forms */
label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.92rem;
    color: var(--text);
    font-weight: 500;
}
input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="time"],
input[type="number"] {
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
}
input:focus {
    outline: 2px solid var(--primary-soft);
    border-color: var(--primary);
}
.vform {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 14px;
}
.hform {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 12px;
    align-items: flex-end;
}
.hform label { flex: 1 1 140px; }
.hform button { white-space: nowrap; }

/* Auth card */
.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    max-width: 420px;
    margin: 30px auto;
    box-shadow: var(--shadow);
}
.auth-card h1 { margin: 0 0 8px; }

/* Confirmation */
.confirm-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    max-width: 460px;
    margin: 30px auto;
    box-shadow: var(--shadow);
}
.confirm-icon { font-size: 3.4rem; }
.confirm-card h1 { margin: 8px 0 16px; }
.confirm-line { margin: 8px 0; font-size: 1.1rem; }
.error-card .confirm-icon { color: var(--danger); }

/* Alerts */
.alert {
    padding: 10px 14px;
    border-radius: 8px;
    margin-top: 12px;
    font-size: 0.92rem;
}
.alert-error { background: var(--danger-soft); color: var(--danger); }
.alert-info { background: var(--primary-soft); color: var(--primary-hover); }

/* Admin add */
.admin-add { margin-bottom: 22px; }
.admin-add details {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin-bottom: 10px;
}
.admin-add summary { cursor: pointer; padding: 4px 0; }
.empty-state {
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    color: var(--text-muted);
}

/* Role cards (page d'accueil — choix parent / enseignant) */
.role-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 24px;
}
.role-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 28px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: transform 0.1s, border-color 0.1s, box-shadow 0.15s;
    text-align: center;
    align-items: center;
}
.role-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 10px 24px rgba(37,99,235,0.15);
}
.role-icon { font-size: 3rem; line-height: 1; }
.role-title { font-weight: 700; font-size: 1.2rem; color: var(--text); }
.role-desc { color: var(--text-muted); font-size: 0.95rem; max-width: 280px; }
.role-arrow {
    color: var(--primary);
    font-weight: 600;
    margin-top: 6px;
    font-size: 0.95rem;
}
.role-parent { background: linear-gradient(180deg, #ffffff, #f0f9ff); }
.role-teacher { background: linear-gradient(180deg, #ffffff, #fef3c7); }

/* Teacher cards (page liste des enseignants) */
.teacher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
    margin-top: 8px;
}
.teacher-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: transform 0.1s, border-color 0.1s, box-shadow 0.1s;
}
.teacher-card:hover {
    transform: translateY(-1px);
    border-color: var(--primary);
    box-shadow: 0 6px 16px rgba(37,99,235,0.15);
}
.teacher-avatar {
    width: 44px; height: 44px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
}
.teacher-info { flex: 1; min-width: 0; }
.teacher-name { font-weight: 600; font-size: 1.05rem; }
.teacher-class { color: var(--text-muted); font-size: 0.88rem; margin-top: 2px; }
.teacher-arrow { color: var(--primary); font-size: 1.4rem; }

.back-link {
    display: inline-block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.92rem;
    margin-bottom: 8px;
}
.back-link:hover { color: var(--primary); }

.subday { margin-top: 14px; }
.subday-title {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 14px 0 8px;
    font-weight: 600;
    text-transform: capitalize;
}

select {
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
}
code {
    background: #f1f5f9;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.88em;
}

/* Permalink box (lien permanent du booking) */
.permalink-box {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: var(--radius);
    padding: 16px;
    margin: 18px 0;
    text-align: left;
}
.permalink-title {
    margin: 0 0 8px;
    font-weight: 600;
    color: var(--primary-hover);
    font-size: 0.95rem;
}
.permalink-input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #93c5fd;
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    background: white;
    margin-bottom: 8px;
    word-break: break-all;
}
.permalink-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

/* Misc */
.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.footer {
    text-align: center;
    padding: 18px 12px;
    color: var(--text-muted);
}

/* Mobile */
@media (max-width: 600px) {
    .hero h1 { font-size: 1.4rem; }
    .hero .subtitle { font-size: 0.95rem; }
    .topbar { padding: 8px 12px; gap: 8px; }
    .brand { font-size: 0.95rem; }
    .container { padding: 14px 10px 32px; }
    .day-card { padding: 12px; margin-bottom: 14px; }
    .day-title { font-size: 1rem; padding-bottom: 8px; margin-bottom: 10px; }

    /* Vue parents : 2 colonnes denses sur mobile */
    .slot-grid {
        grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
        gap: 8px;
    }
    .slot { padding: 12px 8px; min-height: 110px; }
    .slot-time { font-size: 1.1rem; }
    .slot-duration { display: block; margin-top: 2px; }
    .slot-reserve-btn {
        width: 100%;
        padding: 10px 8px;
        font-size: 0.92rem;
    }

    /* Vue admin : empile en cartes */
    .slot-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 12px;
    }
    .slot-row-actions {
        justify-content: flex-end;
        flex-wrap: wrap;
    }
    .btn-sm { padding: 8px 14px; font-size: 0.9rem; }

    .kpi { padding: 10px 12px; min-width: 90px; }
    .kpi-num { font-size: 1.4rem; }
    .kpi-lbl { font-size: 0.82rem; }

    /* Formulaires admin : tout en colonne */
    .hform { gap: 10px; }
    .hform label { flex: 1 1 100%; }
    .hform button { width: 100%; }

    /* Modale plein écran (approx) */
    .modal { width: 96%; max-width: none; margin: auto; }
    .modal-form { padding: 18px; }

    .auth-card { padding: 22px 18px; margin: 16px auto; }
    .confirm-card { padding: 30px 18px; margin: 16px auto; }
    .confirm-icon { font-size: 2.8rem; }

    /* Tap targets confortables partout */
    .btn { min-height: 42px; }
    input, select, textarea { font-size: 16px; } /* évite le zoom iOS */
}
