/*
 * Base - reset partiel + elements HTML.
 *
 * On NE fait pas un reset complet type normalize. On ajuste juste les defaults
 * qui nous genent et on pose les elements HTML de base.
 */

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

html {
    font-family: var(--font-sans);
    font-size: 100%;
    line-height: var(--lh-normal);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: var(--fs-md);
    line-height: var(--lh-normal);
    letter-spacing: var(--tracking-normal);
    min-height: 100vh;
    transition: background-color var(--dur-reveal) var(--ease-editorial),
                color var(--dur-reveal) var(--ease-editorial);
}

/* Texture grain sur ambiance sombre (retire car mix-blend-mode: overlay
   fullscreen fixed etait le plus gros contributeur au lag en Retina 120Hz -
   le compositeur blendait chaque frame sur toute la viewport). */

/* Typo defauts des elements */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--sp-4);
    font-weight: var(--fw-regular);
    letter-spacing: var(--tracking-tight);
    line-height: var(--lh-snug);
}

h1 { font-size: var(--fs-4xl); font-weight: var(--fw-light); letter-spacing: -0.045em; line-height: 0.92; }
h2 { font-size: var(--fs-3xl); line-height: 0.96; }
h3 { font-size: var(--fs-2xl); font-weight: var(--fw-medium); line-height: 1.05; }
h4 { font-size: var(--fs-xl); font-weight: var(--fw-medium); }
h5 { font-size: var(--fs-lg); font-weight: var(--fw-medium); }
h6 { font-size: var(--fs-md); font-weight: var(--fw-semibold); text-transform: uppercase; letter-spacing: var(--tracking-kicker); }

p {
    margin: 0 0 var(--sp-4);
}

ul, ol {
    margin: 0 0 var(--sp-4);
    padding-inline-start: 1.25em;
}

a {
    color: inherit;
    text-decoration: none;
    text-underline-offset: 0.18em;
    text-decoration-thickness: 1px;
    transition: color var(--dur-hover) var(--ease-editorial),
                opacity var(--dur-hover) var(--ease-editorial);
}

a:hover {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
}

/* Les boutons et liens de nav/footer ne doivent pas heriter du underline global */
a.mam-btn:hover,
a[class*="mam-btn"]:hover,
.mam-nav__cta:hover,
.mam-nav__list a:hover,
.mam-drawer__list a:hover,
.mam-drawer__group a:hover,
.mam-panel a:hover,
.mam-footer a:hover,
.mam-faq-item a:hover,
.mam-card a:hover,
.mam-zone-card:hover {
    text-decoration: none;
}

img, video, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

figure { margin: 0; }

hr {
    border: none;
    height: 1px;
    background: var(--color-hairline);
    margin: var(--sp-7) 0;
}

button {
    font: inherit;
    cursor: pointer;
    color: inherit;
    background: none;
    border: none;
    padding: 0;
}

input, textarea, select {
    font: inherit;
    color: inherit;
}

/* Selection */
::selection {
    background: var(--color-accent);
    color: var(--c-paper);
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--color-hairline);
    border-radius: 0;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* Focus visible global */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 0;
}

/* Skip link a11y - invisible sauf au focus clavier (Tab).
   Pattern "visually-hidden until focus" recommande par WCAG. */
.mam-skiplink {
    position: absolute;
    top: 0;
    left: 0;
    padding: var(--sp-3) var(--sp-4);
    background: var(--c-ink);
    color: var(--c-paper);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    z-index: var(--z-skiplink);
    transform: translateY(-120%);
    transition: transform var(--dur-hover) var(--ease-editorial);
    white-space: nowrap;
}

.mam-skiplink:focus,
.mam-skiplink:focus-visible {
    transform: translateY(var(--sp-4));
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Utilitaires */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}