/* SuiviCoach — Suivi de cours particuliers */

:root {
    --primary: #dc2626;
    --primary-hover: #b91c1c;
    --primary-light: #fee2e2;
    --bg: #fafaf9;
    --sidebar-bg: #1c1917;
    --sidebar-text: #a8a29e;
    --sidebar-hover: #292524;
    --sidebar-active: #dc2626;
    --card: #ffffff;
    --text: #1c1917;
    --text-secondary: #57534e;
    --text-muted: #78716c;
    --border: #e7e5e4;
    --border-focus: #dc2626;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --warning: #d97706;
    --warning-bg: #fef3c7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --info: #2563eb;
    --info-bg: #dbeafe;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --sidebar-width: 240px;
    --transition: 0.15s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
.hidden { display: none !important; }

html, body {
    height: 100%;
    font-family: var(--font);
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
}

body { display: flex; overflow: hidden; }

button { font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ---- Login ---- */

.login-screen {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #1c1917 0%, #44403c 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.login-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 360px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.login-brand {
    text-align: center;
    margin-bottom: 16px;
}

.login-brand h1 {
    font-size: 22px;
    margin-top: 12px;
    color: var(--text);
}

.login-brand p {
    color: var(--text-muted);
    font-size: 13px;
}

.brand-icon-lg {
    width: 56px !important;
    height: 56px !important;
    font-size: 22px !important;
    margin: 0 auto;
}

.login-card label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 8px;
}

.login-card input {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
}

.login-card input:focus { border-color: var(--primary); }

.login-card button {
    margin-top: 16px;
    padding: 12px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
}

.login-card button:hover { background: var(--primary-hover); }

.login-error {
    color: var(--danger);
    font-size: 13px;
    min-height: 18px;
    margin-top: 4px;
}

.login-hint {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 16px;
}

.login-hint code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
}

/* ---- Sidebar ---- */

#sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    color: var(--sidebar-text);
    overflow-y: auto;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 18px 22px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    flex-shrink: 0;
}

.sidebar-brand h1 {
    font-size: 15px;
    font-weight: 700;
    color: #f5f5f4;
    letter-spacing: -0.3px;
}

.brand-sub {
    font-size: 11px;
    color: var(--sidebar-text);
    opacity: 0.7;
}

#nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 14px;
    border-radius: var(--radius);
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: #f5f5f4;
}

.nav-item.active {
    background: var(--sidebar-active);
    color: white;
}

.nav-item.active svg { stroke: white; }

.nav-count {
    margin-left: auto;
    font-size: 11px;
    padding: 1px 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
    color: #d6d3d1;
}

.nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 10px 4px;
}

.sidebar-footer {
    padding: 12px 16px 16px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.user-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #d6d3d1;
    font-size: 12px;
}

.user-line button {
    background: none;
    border: none;
    color: var(--sidebar-text);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.user-line button:hover { background: var(--sidebar-hover); color: #f5f5f4; }

/* ---- Main ---- */

#main {
    flex: 1;
    height: 100vh;
    overflow-y: auto;
    padding: 24px 32px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.page-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
}

.page-header p {
    color: var(--text-muted);
    font-size: 13px;
    margin-top: 2px;
}

.page-actions { display: flex; gap: 8px; }

/* ---- Buttons ---- */

.btn {
    padding: 8px 14px;
    border: 1px solid var(--border);
    background: white;
    color: var(--text);
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.btn:hover { background: var(--bg); border-color: #d6d3d1; }

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.btn-danger {
    background: white;
    color: var(--danger);
    border-color: var(--border);
}

.btn-danger:hover { background: var(--danger-bg); border-color: var(--danger); }

.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 6px; }

/* ---- Cards ---- */

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

/* ---- KPI Grid ---- */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.kpi-card {
    background: white;
    padding: 18px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.kpi-card .kpi-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-card .kpi-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-top: 4px;
}

.kpi-card .kpi-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---- Tables ---- */

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table th, .table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    vertical-align: top;
}

.table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: #fafaf9; }

.table .actions { text-align: right; white-space: nowrap; }

/* ---- Badges ---- */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    background: var(--bg);
    color: var(--text-secondary);
    white-space: nowrap;
    line-height: 1.6;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.badge-domain {
    background: var(--info-bg);
    color: var(--info);
}

.badge-type {
    background: #f3e8ff;
    color: #7c3aed;
}

.badge-mode-pi { background: #fef3c7; color: #d97706; }
.badge-mode-ac { background: #dbeafe; color: #2563eb; }

/* ---- Forms ---- */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 14px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
}

/* ---- Modal ---- */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(28, 25, 23, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-overlay.hidden { display: none; }

.modal {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 640px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
}

.modal-wide { max-width: 880px; }

.modal h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* ---- Toast ---- */

#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--text);
    color: white;
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.2s ease;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.fadeout { opacity: 0; transition: opacity 0.3s; }

@keyframes toastIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ---- Filters bar ---- */

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    align-items: center;
}

.filters select,
.filters input[type="text"] {
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    font-size: 13px;
    outline: none;
}

.filters input[type="text"] { min-width: 220px; }

.status-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.status-pill {
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: white;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.status-pill:hover { background: var(--bg); }

.status-pill.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.status-pill .pill-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* ---- Tabs (Paramètres) ---- */

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab {
    padding: 10px 16px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

.tab:hover { color: var(--text); }

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ---- Progress ---- */

.progress {
    height: 8px;
    background: var(--bg);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.progress-bar {
    height: 100%;
    background: var(--success);
    transition: width 0.3s;
}

.progress-bar.warn { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* ---- Suivi individuel ---- */

.eleve-selector {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.eleve-chip {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-size: 13px;
}

.eleve-chip:hover { border-color: var(--primary); }

.eleve-chip.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.eleve-chip.inactive { opacity: 0.5; }

.avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 11px;
    flex-shrink: 0;
}

.eleve-summary {
    background: white;
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    box-shadow: var(--shadow);
}

.eleve-summary .stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.eleve-summary .stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-top: 2px;
}

/* ---- Suivi rows ---- */

.suivi-row {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 14px;
    margin-bottom: 6px;
    display: grid;
    grid-template-columns: 80px 1fr 160px 200px 70px;
    gap: 12px;
    align-items: center;
    font-size: 13px;
}

.suivi-row .ordre { color: var(--text-muted); font-size: 11px; }
.suivi-row .libelle { font-weight: 500; }
.suivi-row .libelle .sub { color: var(--text-muted); font-size: 11px; margin-top: 2px; }
.suivi-row select { padding: 4px 8px; font-size: 12px; border-radius: 4px; border: 1px solid var(--border); }
.suivi-row .comm { font-size: 11px; color: var(--text-secondary); }

@media (max-width: 900px) {
    .suivi-row { grid-template-columns: 1fr; }
}

/* ---- Empty state ---- */

.empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty h3 { color: var(--text); margin-bottom: 6px; }