/* ============================================================
   CPE - Système de design partagé
   Variables, typographie, classes utilitaires.
   Inclus depuis base.html / baseA.html.
   ============================================================ */

:root {
    /* --- Palette de marque --- */
    --cpe-marine:        #003366;
    --cpe-marine-dark:   #002244;
    --cpe-marine-light:  #1a4d80;
    --cpe-rose:          #D18FB2;
    --cpe-rose-dark:     #b87599;
    --cpe-vert:          #A1D5B1;
    --cpe-vert-dark:     #8bc49c;

    /* --- Neutres --- */
    --cpe-ink:           #1e293b;
    --cpe-ink-soft:      #334155;
    --cpe-muted:         #475569;
    --cpe-muted-2:       #64748b;
    --cpe-line:          #e2e8f0;
    --cpe-line-soft:     #f1f5f9;
    --cpe-bg:            #ffffff;
    --cpe-bg-soft:       #f8fafc;

    /* --- Typographie --- */
    --cpe-font-display: Georgia, Cambria, "Times New Roman", Times, serif;
    --cpe-font-body:    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                        Helvetica, Arial, sans-serif;

    /* --- Échelle --- */
    --cpe-radius:        4px;
    --cpe-radius-lg:     8px;
    --cpe-shadow-sm:     0 2px 6px rgba(0, 51, 102, 0.06);
    --cpe-shadow-md:     0 4px 14px rgba(0, 51, 102, 0.10);
    --cpe-shadow-lg:     0 12px 30px rgba(0, 51, 102, 0.15);

    /* --- Transitions --- */
    --cpe-ease:          cubic-bezier(0.16, 1, 0.3, 1);
    --cpe-tr-fast:       0.18s ease;
    --cpe-tr-base:       0.3s var(--cpe-ease);
}

/* --- Reset léger --- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--cpe-font-body);
    color: var(--cpe-ink);
    background: var(--cpe-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
}

/* --- Sélection texte aux couleurs de marque --- */
::selection {
    background: var(--cpe-rose);
    color: var(--cpe-bg);
}

/* --- Focus visible accessible --- */
:focus-visible {
    outline: 3px solid var(--cpe-rose);
    outline-offset: 2px;
    border-radius: var(--cpe-radius);
}

/* ============================================================
   Classes utilitaires CPE (préfixe .cpe-)
   ============================================================ */

/* Titre éditorial style académique */
.cpe-heading {
    font-family: var(--cpe-font-display);
    color: var(--cpe-marine);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

/* Bouton primaire (marine) */
.cpe-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 26px;
    background: var(--cpe-marine);
    color: var(--cpe-bg);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    border: 1px solid var(--cpe-marine);
    border-radius: var(--cpe-radius);
    transition: background var(--cpe-tr-fast),
                transform var(--cpe-tr-fast),
                box-shadow var(--cpe-tr-fast);
    cursor: pointer;
}

.cpe-btn:hover {
    background: var(--cpe-marine-dark);
    transform: translateY(-1px);
    box-shadow: var(--cpe-shadow-md);
}

.cpe-btn--rose {
    background: var(--cpe-rose);
    border-color: var(--cpe-rose);
    color: var(--cpe-bg);
}
.cpe-btn--rose:hover { background: var(--cpe-rose-dark); border-color: var(--cpe-rose-dark); }

.cpe-btn--vert {
    background: var(--cpe-vert);
    border-color: var(--cpe-vert);
    color: var(--cpe-marine);
}
.cpe-btn--vert:hover { background: var(--cpe-vert-dark); border-color: var(--cpe-vert-dark); }

.cpe-btn--ghost {
    background: transparent;
    color: var(--cpe-marine);
}
.cpe-btn--ghost:hover {
    background: var(--cpe-marine);
    color: var(--cpe-bg);
}

/* Carte éditoriale */
.cpe-card {
    background: var(--cpe-bg);
    border: 1px solid var(--cpe-line);
    border-radius: var(--cpe-radius);
    padding: 26px;
    transition: transform var(--cpe-tr-base),
                box-shadow var(--cpe-tr-base),
                border-color var(--cpe-tr-base);
}
.cpe-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cpe-shadow-lg);
    border-color: var(--cpe-marine);
}

/* En-tête de section style "Harvard" */
.cpe-section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    border-bottom: 2px solid var(--cpe-marine);
    padding-bottom: 12px;
    margin: 60px 0 30px;
}
.cpe-section-title {
    font-family: var(--cpe-font-display);
    font-size: clamp(1.6rem, 2.4vw, 2rem);
    font-weight: 700;
    color: var(--cpe-marine);
    margin: 0;
}

/* Étiquette / kicker */
.cpe-kicker {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--cpe-rose);
    margin-bottom: 12px;
}

/* Conteneur centré */
.cpe-container {
    max-width: 1200px;
    width: 92%;
    margin: 0 auto;
}

/* --- Apparition au scroll (utilisable via IntersectionObserver) --- */
.cpe-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.9s var(--cpe-ease),
                transform 0.9s var(--cpe-ease);
    will-change: opacity, transform;
}
.cpe-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- États d'accessibilité --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }
    html { scroll-behavior: auto; }
}

/* --- Print --- */
@media print {
    .navbar, .footer, .side-actions { display: none !important; }
    body { color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
}