/* ── Thème clair / sombre (prefers-color-scheme) ── */
:root {
    color-scheme: light dark;

    --accent: #3da9fc;
    --accent-hover: #0084f0;

    --bg-page: #eef1f6;
    --bg-header: #ffffff;
    --bg-container: #ffffff;
    --bg-card: #f4f7fb;
    --bg-option: #ffffff;
    --bg-option-hover: #e8f4ff;

    --text-primary: #1a1a1a;
    --text-heading: #1a1a1a;
    --text-secondary: #333333;
    --text-muted: #5a6573;

    --border: #d4dce8;
    --border-strong: #b8c4d4;
    --shadow: rgba(15, 23, 42, 0.1);

    --timer-border: #ffffff;
    --criteria-bg: rgba(61, 169, 252, 0.1);
    --verdict-neutral-border: #d4dce8;
    --loader-track: #d4dce8;
    --debug-color: #7a8494;
    --explanation-bg: rgba(61, 169, 252, 0.08);

    --logo-width: 200px;
    --logo-height: 54px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-page: #121212;
        --bg-header: #121212;
        --bg-container: #1a1a1a;
        --bg-card: #242424;
        --bg-option: #2d2d2d;
        --bg-option-hover: #3d3d3d;

        --text-primary: #ffffff;
        --text-heading: #ffffff;
        --text-secondary: #f0f0f0;
        --text-muted: #cccccc;

        --border: #333333;
        --border-strong: #3d3d3d;
        --shadow: rgba(0, 0, 0, 0.5);

        --criteria-bg: rgba(61, 169, 252, 0.12);
        --verdict-neutral-border: #444444;
        --loader-track: #333333;
        --debug-color: #555555;
        --explanation-bg: rgba(61, 169, 252, 0.1);
    }
}

html {
    color-scheme: light dark;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
}

/* ── En-tête fixe ── */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    box-sizing: border-box;
    padding: 8px 12px;
    padding-top: max(8px, env(safe-area-inset-top, 0px));
    padding-left: max(12px, env(safe-area-inset-left, 0px));
    padding-right: max(12px, env(safe-area-inset-right, 0px));
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    will-change: transform;
}

.site-header--with-timer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

/* ── Logo ── */
.brand-link {
    display: block;
    flex-shrink: 0;
    text-decoration: none;
    line-height: 0;
    width: var(--logo-width);
    height: var(--logo-height);
    overflow: visible;
}

.brand-link picture {
    display: block;
    width: 100%;
    height: 100%;
}

.brand-logo {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: left center;
}

@media (max-width: 600px) {
    :root {
        --logo-width: 150px;
        --logo-height: 44px;
    }

    .site-header {
        padding: 6px 10px;
        padding-top: max(6px, env(safe-area-inset-top, 0px));
    }
}