/* ==========================================================================
   Base — reset, typographie globale, fond parchemin
   ========================================================================== */

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

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

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: var(--cdc-fonte-corps);
    font-size: var(--cdc-texte-base);
    line-height: var(--cdc-interligne);
    color: var(--cdc-texte);
    background-color: var(--cdc-fond-page);

    /* Texture parchemin — superposition de motifs subtils */
    background-image:
        /* Veines fines */
        repeating-linear-gradient(
            115deg,
            transparent 0px,
            transparent 2px,
            rgba(160, 128, 80, 0.018) 2px,
            rgba(160, 128, 80, 0.018) 3px
        ),
        /* Taches discrètes */
        radial-gradient(ellipse at 15% 25%, rgba(160, 128, 80, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 75%, rgba(160, 128, 80, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 50%, rgba(212, 175, 55, 0.03) 0%, transparent 70%);
    background-attachment: fixed;
    background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%;

    transition: background-color var(--cdc-trans-lente), color var(--cdc-trans-lente);
}

[data-theme="nuit"] body {
    background-image:
        repeating-linear-gradient(
            115deg,
            transparent 0px,
            transparent 2px,
            rgba(232, 200, 118, 0.012) 2px,
            rgba(232, 200, 118, 0.012) 3px
        ),
        radial-gradient(ellipse at 15% 25%, rgba(232, 200, 118, 0.04) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 75%, rgba(232, 200, 118, 0.035) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 50%, rgba(212, 175, 55, 0.02) 0%, transparent 70%);
}

/* ─── Typographie ─────────────────────────────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--cdc-fonte-titre);
    font-weight: var(--cdc-poids-titre);
    color: var(--cdc-texte-titre);
    letter-spacing: 0.01em;
    line-height: 1.25;
    margin: 0 0 var(--cdc-esp-md);
}

p {
    margin: 0 0 var(--cdc-esp-md);
}

a {
    color: var(--cdc-accent);
    text-decoration: none;
    transition: color var(--cdc-trans);
}

a:hover, a:focus {
    color: var(--cdc-accent-vif);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: rgba(200, 169, 106, 0.4);
    text-decoration-thickness: 1px;
}

em {
    font-style: italic;
    color: var(--cdc-texte-secondaire);
}

strong {
    font-weight: var(--cdc-poids-fort);
    color: var(--cdc-texte);
}

img {
    width: 100%;
    height: auto;
    display: block;
}

button {
    font: inherit;
    cursor: pointer;
}

/* ─── Sélection de texte ──────────────────────────────────────────────────── */

::selection {
    background: rgba(212, 175, 55, 0.35);
    color: var(--cdc-encre);
}

[data-theme="nuit"] ::selection {
    background: rgba(232, 200, 118, 0.35);
    color: var(--cdc-parchemin);
}

/* ─── Lien d'évitement (a11y) ─────────────────────────────────────────────── */

.cdc-skip {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--cdc-encre);
    color: var(--cdc-parchemin);
    padding: var(--cdc-esp-sm) var(--cdc-esp-md);
    z-index: 10000;
}

.cdc-skip:focus {
    left: var(--cdc-esp-md);
    top: var(--cdc-esp-md);
}

/* ─── Focus visible ───────────────────────────────────────────────────────── */

:focus-visible {
    outline: 2px solid var(--cdc-accent-vif);
    outline-offset: 3px;
    border-radius: var(--cdc-rayon-sm);
}