/* =====================================================================
   VIGGO HAMEL — Feuille de style front public
   Palette : noir / blanc / nuances de gris. Typo : Helvetica Neue.
   ===================================================================== */

:root {
    --color-black: #111111;
    --color-dark: #1c1c1c;
    --color-gray-900: #2b2b2b;
    --color-gray-700: #4a4a4a;
    --color-gray-500: #7a7a7a;
    --color-gray-300: #cfcfcf;
    --color-gray-100: #f2f2f2;
    --color-white: #ffffff;

    --font-base: "Helvetica Neue", Helvetica, Arial, sans-serif;

    --spacing-1: 0.5rem;
    --spacing-2: 1rem;
    --spacing-3: 1.5rem;
    --spacing-4: 2.5rem;
    --spacing-5: 4rem;

    --max-width: 1400px;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    background: var(--color-white);
    color: var(--color-black);
    font-family: var(--font-base);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ---- Header / logo --------------------------------------------------- */

.site-header {
    padding: var(--spacing-3) var(--spacing-3) var(--spacing-2);
}

.site-header__inner,
.intro,
.category-filters,
.photo-grid,
.faq,
.site-footer__inner {
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
}

.site-logo {
    display: inline-flex;
    flex-direction: column;
    gap: 2px;
}

.site-logo__title {
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    color: var(--color-black);
}

.site-logo__subtitle {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--color-gray-500);
    letter-spacing: 0.02em;
}

/* ---- Intro ------------------------------------------------------------ */

.intro {
    padding: var(--spacing-2) var(--spacing-3) var(--spacing-4);
}

.intro__title {
    font-size: clamp(1.75rem, 4vw, 3rem);
    margin: 0 0 var(--spacing-2);
    font-weight: 700;
}

.intro__text {
    max-width: 60ch;
    color: var(--color-gray-700);
    font-size: 1.05rem;
}

/* ---- Filtre catégories ------------------------------------------------- */

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-1);
    padding: 0 var(--spacing-3) var(--spacing-3);
}

.category-filters__btn {
    padding: 0.5em 1.2em;
    border: 1px solid var(--color-gray-300);
    border-radius: 999px;
    font-size: 0.9rem;
    color: var(--color-gray-700);
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.category-filters__btn:hover {
    border-color: var(--color-black);
    color: var(--color-black);
}

.category-filters__btn.is-active {
    background: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

/* ---- Galerie masonry (CSS columns, sans dépendance JS) ------------------ */

.photo-grid {
    padding: 0 var(--spacing-3) var(--spacing-5);
    column-count: 1;
    column-gap: var(--spacing-2);
}

@media (min-width: 560px) {
    .photo-grid { column-count: 2; }
}

@media (min-width: 900px) {
    .photo-grid { column-count: 3; }
}

@media (min-width: 1300px) {
    .photo-grid { column-count: 4; }
}

.photo-grid__item {
    margin: 0 0 var(--spacing-2);
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
    background: var(--color-gray-100);
    overflow: hidden;
    border-radius: 2px;
}

.photo-grid__item.is-hidden {
    display: none;
}

.photo-grid__link {
    display: block;
}

.photo-grid__item img {
    width: 100%;
    height: auto;
    transition: transform 0.4s ease;
}

.photo-grid__link:hover img {
    transform: scale(1.02);
}

.photo-grid--loading {
    opacity: 0.5;
}

/* ---- FAQ ---------------------------------------------------------------- */

.faq {
    padding: var(--spacing-4) var(--spacing-3) var(--spacing-5);
    border-top: 1px solid var(--color-gray-300);
}

.faq__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-3);
}

.faq__item {
    border-bottom: 1px solid var(--color-gray-300);
    padding: var(--spacing-2) 0;
}

.faq__question {
    cursor: pointer;
    font-weight: 700;
    list-style: none;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__question::before {
    content: "+ ";
    color: var(--color-gray-500);
}

.faq__item[open] .faq__question::before {
    content: "– ";
}

.faq__answer {
    padding-top: var(--spacing-1);
    color: var(--color-gray-700);
}

/* ---- Footer --------------------------------------------------------------- */

.site-footer {
    border-top: 1px solid var(--color-gray-300);
    padding: var(--spacing-3);
}

.site-footer__copyright {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    margin: 0;
}

/* ---- Bannière cookies ------------------------------------------------------ */

.cookie-banner {
    position: fixed;
    left: var(--spacing-2);
    right: var(--spacing-2);
    bottom: var(--spacing-2);
    max-width: 640px;
    margin: 0 auto;
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    align-items: center;
    justify-content: space-between;
    z-index: 999;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.cookie-banner__text {
    margin: 0;
    font-size: 0.85rem;
    flex: 1 1 260px;
    color: var(--color-gray-300);
}

.cookie-banner__actions {
    display: flex;
    gap: var(--spacing-1);
}

/* ---- Boutons génériques ----------------------------------------------------- */

.btn {
    display: inline-block;
    padding: 0.6em 1.3em;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn--primary {
    background: var(--color-black);
    color: var(--color-white);
}

.btn--outline {
    background: transparent;
    border-color: var(--color-gray-300);
    color: var(--color-white);
}

/* ---- Page galerie privée / erreurs ------------------------------------------- */

.private-gallery-message {
    max-width: 640px;
    margin: var(--spacing-5) auto;
    padding: 0 var(--spacing-3);
    text-align: center;
}