/* Design repris de l'ancien site « Dossier technique » : bandeau gris, champs et boutons arrondis, bouton rouge.
   Mobile d'abord ; adapté aux smartphones, tablettes et ordinateurs. */

:root {
    --band: #ababab;
    --text: #000;
    --field-text: #2d2d2d;
    --field-border: #b9b9b9;
    --field-border-active: #2d2d2d;
    --disabled-bg: #e0e0e0;
    --disabled-text: #808080;
    --button: #ff0000;
    --button-text: #1e1e1e;
    --button-hover: rgba(255, 153, 153, .75);
    --error: #c00000;
    --radius: 21px;
    --field-h: 44px;
    --font: Arial, Helvetica, sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; }
html, body { height: 100%; margin: 0; }

body {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    background: #fff;
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.4;
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

/* ---------- Bandeau ---------- */
.band {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-areas: "logo nav" "title title";
    align-items: center;
    gap: .25rem 1rem;
    padding: .75rem 1rem;
    padding-top: calc(.75rem + env(safe-area-inset-top));
    background: var(--band);
    color: #fff;
}

.band-logo { grid-area: logo; display: block; line-height: 0; }
.band-logo img { display: block; height: 44px; width: auto; }

.band-title {
    grid-area: title;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
}

.band-nav { grid-area: nav; display: flex; justify-content: flex-end; align-items: center; gap: 1rem; }
.band-nav form { margin: 0; }

.band-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 .25rem;
    margin: 0;
    width: auto;
    background: none;
    border: 0;
    border-radius: 0;
    color: #fff;
    font: inherit;
    font-size: .95rem;
    font-weight: 700;
    text-decoration: underline;
    text-transform: none;
    cursor: pointer;
}
.band-link:hover, .band-link:focus-visible { background: none; color: #1e1e1e; }

.band-compact { padding-top: calc(.4rem + env(safe-area-inset-top)); padding-bottom: .4rem; }
.band-compact .band-logo img { height: 32px; }
.band-compact .band-title { display: none; }
.band-compact { grid-template-areas: "logo nav"; }

/* ---------- Contenu ---------- */
main.page {
    width: 100%;
    max-width: 30rem;
    margin: 0 auto;
    padding: 1.5rem 1rem 3rem;
}

h1 { margin: 0 0 .75rem; font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1rem; }

label { display: block; margin-bottom: .35rem; font-weight: 700; }

input {
    display: block;
    width: 100%;
    height: var(--field-h);
    padding: 0 .75rem 0 1rem;
    font: inherit;
    font-size: 16px;            /* évite le zoom automatique d'iOS */
    font-weight: 700;
    color: var(--field-text);
    background: #fff;
    border: 1px solid var(--field-border);
    border-radius: var(--radius);
    transition: border-color .45s ease;
    -webkit-appearance: none;
    appearance: none;
}
input:hover, input:focus { border-color: var(--field-border-active); outline: none; }
input:focus-visible { box-shadow: 0 0 0 3px rgba(255, 0, 0, .25); }
input:disabled { color: var(--disabled-text); background: var(--disabled-bg); }

button {
    display: block;
    width: 100%;
    height: var(--field-h);
    margin-top: 1rem;
    padding: 0 1rem;
    font: inherit;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--button-text);
    background: var(--button);
    border: 0;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color .45s ease;
    -webkit-tap-highlight-color: transparent;
}
button:hover, button:focus-visible { background: var(--button-hover); }
button:active { background: rgba(255, 255, 255, .75); }
button:disabled { color: #909090; background: var(--disabled-bg); cursor: not-allowed; text-shadow: 0 1px 0 rgba(255, 255, 255, .5); }

form.stack + p { margin-top: 1.25rem; }

.error { margin: .5rem 0 0; color: var(--error); font-weight: 700; }
.hint { color: #555; font-size: .95rem; }
a { color: #8b0000; }

/* ---------- Liste des projets ---------- */
.greeting { margin: 0 0 1rem; font-size: 1.05rem; font-weight: 700; }

.tiles {
    display: grid;
    grid-template-columns: 1fr;
    gap: .75rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tile {
    display: flex;
    align-items: center;
    gap: .9rem;
    min-height: 64px;
    padding: .6rem 1rem;
    color: var(--field-text);
    font-weight: 700;
    text-decoration: none;
    background: #fff;
    border: 1px solid var(--field-border);
    border-radius: var(--radius);
    transition: border-color .45s ease;
}
.tile:hover, .tile:focus-visible { border-color: var(--button); outline: none; }
.tile img { flex: none; width: 40px; height: 40px; }

/* ---------- Viewer 3D ---------- */
main.viewer { flex: 1 1 auto; min-height: 0; display: flex; }
iframe.sketchfab {
    flex: 1 1 auto;
    width: 100%;
    min-height: 60dvh;
    border: 0;
}

/* ---------- Tablette ---------- */
@media (min-width: 600px) {
    .band {
        grid-template-columns: auto 1fr auto;
        grid-template-areas: "logo title nav";
        padding: 1rem 1.5rem;
    }
    .band-logo img { height: 64px; }
    .band-title { font-size: 2rem; }
    .band-compact { grid-template-areas: "logo nav"; grid-template-columns: auto 1fr; }
    .band-compact .band-logo img { height: 36px; }

    main.page { max-width: 44rem; padding-top: 2.5rem; }
    .tiles { grid-template-columns: repeat(2, 1fr); }
    form.stack { max-width: 22rem; }
}

/* ---------- Ordinateur ---------- */
@media (min-width: 1000px) {
    .band { min-height: 142px; padding: 1rem 2rem; }
    .band-logo img { height: 84px; }
    .band-title { font-size: 2.25rem; }
    .band-compact { min-height: 0; padding: .5rem 1.5rem; }
    .band-compact .band-logo img { height: 40px; }

    main.page { max-width: 58rem; }
    .tiles { grid-template-columns: repeat(3, 1fr); }
}

/* Smartphone en paysage : bandeau plus bas pour laisser de la place au contenu. */
@media (max-height: 480px) and (orientation: landscape) {
    .band { padding-top: .35rem; padding-bottom: .35rem; }
    .band-logo img { height: 32px; }
    .band-title { font-size: 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}