/**
 * =============================================================================
 * AMF CERTIF PRO — Design System Global
 * Auteur  : Kabore Nongonmanegre Philippe Lionel — PDG de Yieldrix
 * Fichier : css/main.css
 * Rôle    : Variables CSS, reset, typographie, composants partagés.
 *           Design inspiré du split-panel Myloumo : sobriété, lisibilité,
 *           autorité — à la hauteur d'une préparation de certification.
 * =============================================================================
 */

/* ─── Variables ─────────────────────────────────────────────────────────── */
:root {
    /* Palette principale — bleu marine financier */
    --primary-900: #0a1628;
    --primary-800: #0d2040;
    --primary-700: #102855;
    --primary-600: #1a3c6e;
    --primary-500: #1e4d8c;
    --primary-400: #2563a8;

    /* Accent — or/ambre pour les éléments d'action et résultats */
    --accent-500: #d97706;
    --accent-400: #f59e0b;
    --accent-300: #fbbf24;

    /* Couleurs fonctionnelles */
    --success: #059669;
    --success-bg: #d1fae5;
    --danger:  #dc2626;
    --danger-bg: #fee2e2;
    --warning: #d97706;
    --warning-bg: #fef3c7;
    --info:    #2563eb;
    --info-bg: #dbeafe;

    /* Neutres */
    --gray-50:  #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Typographie */
    --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Espacements */
    --radius-sm:  6px;
    --radius:     10px;
    --radius-lg:  16px;
    --radius-xl:  24px;

    /* Ombres */
    --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow:     0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
    --shadow-lg:  0 12px 40px rgba(0,0,0,.15), 0 4px 12px rgba(0,0,0,.08);
    --shadow-xl:  0 24px 64px rgba(0,0,0,.20);

    /* Transitions */
    --transition: 0.22s cubic-bezier(.4,0,.2,1);
}

/* ─── Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-sans);
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary-500); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-400); }

img { max-width: 100%; display: block; }

/* ─── Layout ────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Layout split (login / inscription) */
.split-layout {
    display: flex;
    min-height: 100vh;
    overflow: hidden;
}

.split-left {
    flex: 1;
    background: linear-gradient(155deg, var(--primary-800) 0%, var(--primary-900) 60%, #080f1e 100%);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 48px 56px;
    position: relative;
    overflow: hidden;
}

/* Texture géométrique subtile sur le panneau gauche */
.split-left::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(30,77,140,.35) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26,60,110,.4) 0%, transparent 50%);
    pointer-events: none;
}

/* Grille de points subtile */
.split-left::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}

.split-right {
    width: 480px;
    flex-shrink: 0;
    background: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 48px 44px;
    overflow-y: auto;
    box-shadow: -16px 0 48px rgba(0,0,0,.12);
}

/* ─── Navbar ────────────────────────────────────────────────────────────── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--primary-800);
    letter-spacing: -0.5px;
}

.navbar-logo span { color: var(--accent-500); }

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.navbar-menu a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: .9rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition);
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background: var(--gray-100);
    color: var(--primary-700);
}

.navbar-menu a .material-icons { font-size: 1.1rem; }

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--primary-600);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .85rem;
    cursor: pointer;
    border: 2px solid var(--gray-200);
    transition: border-color var(--transition);
}

.user-avatar:hover { border-color: var(--primary-400); }

/* ─── Boutons ───────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: .92rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--primary-700);
    color: white;
    border-color: var(--primary-700);
}
.btn-primary:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(30,77,140,.35);
}

.btn-accent {
    background: var(--accent-500);
    color: white;
    border-color: var(--accent-500);
}
.btn-accent:hover {
    background: var(--accent-400);
    border-color: var(--accent-400);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(217,119,6,.35);
}

.btn-outline {
    background: transparent;
    color: var(--primary-700);
    border-color: var(--primary-700);
}
.btn-outline:hover {
    background: var(--primary-700);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border-color: transparent;
}
.btn-ghost:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-sm { padding: 7px 14px; font-size: .83rem; border-radius: var(--radius-sm); }
.btn-block { width: 100%; }
.btn-icon { padding: 10px; border-radius: var(--radius); }

.btn .material-icons { font-size: 1.1em; }

/* ─── Cards ─────────────────────────────────────────────────────────────── */
.card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover { box-shadow: var(--shadow); }

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body { padding: 24px; }
.card-footer { padding: 16px 24px; border-top: 1px solid var(--gray-100); background: var(--gray-50); }

/* Card stat (dashboard) */
.stat-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    background: white;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon .material-icons { font-size: 1.5rem; }
.stat-icon.blue   { background: var(--info-bg); color: var(--info); }
.stat-icon.green  { background: var(--success-bg); color: var(--success); }
.stat-icon.amber  { background: var(--warning-bg); color: var(--warning); }
.stat-icon.red    { background: var(--danger-bg); color: var(--danger); }

.stat-value { font-size: 2rem; font-weight: 800; color: var(--gray-900); line-height: 1; }
.stat-label { font-size: .83rem; color: var(--gray-500); margin-top: 4px; }

/* ─── Formulaires ───────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }

.form-label {
    display: block;
    font-size: .86rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-control {
    display: block;
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: .95rem;
    color: var(--gray-800);
    background: white;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(30,77,140,.15);
}

.form-control.has-icon { padding-left: 42px; }

.input-wrap {
    position: relative;
}

.input-wrap .material-icons {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.2rem;
    pointer-events: none;
}

.form-hint { font-size: .8rem; color: var(--gray-400); margin-top: 5px; }
.form-error { font-size: .82rem; color: var(--danger); margin-top: 5px; font-weight: 500; }

/* ─── Progress bars ─────────────────────────────────────────────────────── */
.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary-600), var(--primary-400));
    transition: width .6s cubic-bezier(.4,0,.2,1);
}

.progress-bar.success { background: linear-gradient(90deg, #059669, #34d399); }
.progress-bar.warning { background: linear-gradient(90deg, #d97706, #fbbf24); }
.progress-bar.danger  { background: linear-gradient(90deg, #dc2626, #f87171); }

/* ─── Badges ────────────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.5;
}

.badge-blue    { background: var(--info-bg);    color: var(--info); }
.badge-green   { background: var(--success-bg); color: var(--success); }
.badge-amber   { background: var(--warning-bg); color: var(--warning); }
.badge-red     { background: var(--danger-bg);  color: var(--danger); }
.badge-gray    { background: var(--gray-100);   color: var(--gray-600); }

/* ─── Alertes ───────────────────────────────────────────────────────────── */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: .9rem;
    border-left: 4px solid;
    margin-bottom: 16px;
}

.alert-success { background: var(--success-bg); border-color: var(--success); color: #065f46; }
.alert-danger  { background: var(--danger-bg);  border-color: var(--danger);  color: #7f1d1d; }
.alert-warning { background: var(--warning-bg); border-color: var(--warning); color: #78350f; }
.alert-info    { background: var(--info-bg);    border-color: var(--info);    color: #1e3a5f; }

/* ─── Quiz — Options QCM ────────────────────────────────────────────────── */
.quiz-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 10px;
    background: white;
    user-select: none;
}

.quiz-option:hover:not(.disabled) {
    border-color: var(--primary-400);
    background: var(--gray-50);
}

.quiz-option.selected {
    border-color: var(--primary-600);
    background: #eff6ff;
}

.quiz-option.correct {
    border-color: var(--success);
    background: var(--success-bg);
}

.quiz-option.wrong {
    border-color: var(--danger);
    background: var(--danger-bg);
}

.option-letter {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gray-100);
    color: var(--gray-600);
    font-weight: 700;
    font-size: .92rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
}

.quiz-option.selected .option-letter { background: var(--primary-600); color: white; }
.quiz-option.correct  .option-letter { background: var(--success); color: white; }
.quiz-option.wrong    .option-letter { background: var(--danger);  color: white; }

/* ─── Timer ─────────────────────────────────────────────────────────────── */
.timer-bar {
    height: 5px;
    background: var(--gray-200);
    border-radius: 0;
    overflow: hidden;
}

.timer-fill {
    height: 100%;
    background: var(--primary-500);
    transition: width .5s linear, background .5s;
}

.timer-fill.warning { background: var(--warning); }
.timer-fill.danger  { background: var(--danger); animation: pulse-red .5s infinite; }

@keyframes pulse-red {
    0%, 100% { opacity: 1; }
    50%       { opacity: .6; }
}

.timer-display {
    font-size: 1.6rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -1px;
    color: var(--gray-800);
    transition: color var(--transition);
}

.timer-display.warning { color: var(--warning); }
.timer-display.danger  { color: var(--danger); }

/* ─── Category grid ─────────────────────────────────────────────────────── */
.category-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--cat-color, var(--primary-600));
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--gray-300);
}

.category-card .material-icons {
    font-size: 2rem;
    color: var(--cat-color, var(--primary-600));
    margin-bottom: 12px;
}

.category-card h3 { font-size: .95rem; font-weight: 700; color: var(--gray-800); margin-bottom: 6px; }
.category-card .cat-score { font-size: .82rem; color: var(--gray-500); }

/* Weak category badge */
.weak-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--danger-bg);
    color: var(--danger);
    font-size: .7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
}

/* ─── Leaderboard ───────────────────────────────────────────────────────── */
.leaderboard-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
}

.leaderboard-row:last-child { border-bottom: none; }

.rank-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: .85rem;
    flex-shrink: 0;
}

.rank-badge.gold   { background: #fef3c7; color: #d97706; }
.rank-badge.silver { background: var(--gray-100); color: var(--gray-600); }
.rank-badge.bronze { background: #fde8d0; color: #c05f1a; }
.rank-badge.other  { background: var(--gray-100); color: var(--gray-500); }

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .split-left { display: none; }
    .split-right { width: 100%; max-width: 520px; margin: 0 auto; box-shadow: none; }
    .split-layout { justify-content: center; background: var(--gray-50); }
}

@media (max-width: 768px) {
    .split-right { padding: 32px 24px; }
    .navbar-menu { display: none; }
    .stat-card { flex-direction: column; }
}

/* ─── Utilitaires ───────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-1 { margin-top: 4px; }  .mt-2 { margin-top: 8px; }  .mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; } .mt-5 { margin-top: 20px; } .mt-6 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }.mb-2 { margin-bottom: 8px; }.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px;}.mb-5 { margin-bottom: 20px;}.mb-6 { margin-bottom: 24px;}
.gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; }
.flex { display: flex; } .flex-col { flex-direction: column; }
.items-center { align-items: center; } .justify-between { justify-content: space-between; }
.font-bold { font-weight: 700; } .font-black { font-weight: 900; }
.text-sm { font-size: .85rem; } .text-xs { font-size: .75rem; }
.text-muted { color: var(--gray-500); }
.text-success { color: var(--success); } .text-danger { color: var(--danger); }
.rounded-full { border-radius: 999px; }
.hidden { display: none; }
.w-full { width: 100%; }
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 900px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ─── Scrollbar personnalisée ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ─── Spinner ───────────────────────────────────────────────────────────── */
.spinner {
    width: 20px; height: 20px;
    border: 2.5px solid rgba(255,255,255,.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin .7s linear infinite;
    display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Tooltip ───────────────────────────────────────────────────────────── */
[data-tooltip] { position: relative; cursor: help; }
[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: white;
    font-size: .76rem;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 1000;
}
[data-tooltip]:hover::after { opacity: 1; }