/* =====================================================================
   FUKKATSU — Feuille de styles principale
   Thème : sombre, accents rouge "Eclipse", typographie sport JDM.
   Organisation : variables → reset → layout → header → vues → composants
                  → footer → responsive → animations.
   ===================================================================== */

/* ----------------------------- Variables ----------------------------- */
:root {
    --bg:            #0d0d10;
    --bg-soft:       #15151b;
    --bg-card:       #1b1c24;
    --bg-elevated:   #22232d;
    --border:        #2c2d38;
    --text:          #ecedf1;
    --text-muted:    #a2a4b0;
    --text-dim:      #6e7080;

    --accent:        #e23636; /* rouge Eclipse */
    --accent-dark:   #b71f1f;
    --accent-glow:   rgba(226, 54, 54, 0.35);
    --rust:          #b5651d; /* clin d'œil à la rouille */

    --font-display: "Oswald", "Arial Narrow", sans-serif;
    --font-body:    "Inter", system-ui, -apple-system, sans-serif;

    --radius:    14px;
    --radius-sm: 8px;
    --maxw:      1180px;
    --header-h:  72px;

    --shadow:    0 18px 50px rgba(0, 0, 0, 0.45);
    --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.1;
    margin: 0 0 0.5em;
    letter-spacing: 0.5px;
}

p { margin: 0 0 1rem; }

ul { margin: 0; padding: 0; list-style: none; }

/* Accessibilité */
.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--accent);
    color: #fff;
    padding: 10px 16px;
    z-index: 1000;
    border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ------------------------------ Layout ------------------------------- */
.container {
    width: 100%;
    max-width: var(--maxw);
    margin-inline: auto;
    padding-inline: 24px;
}

.section { padding-block: clamp(48px, 8vw, 96px); }

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.78rem;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }

/* ------------------------------ Boutons ------------------------------ */
.btn {
    display: inline-block;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.92rem;
    padding: 14px 30px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 30px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }

.btn-ghost {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; }

/* ------------------------------ Header ------------------------------- */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--header-h);
    z-index: 100;
    background: rgba(13, 13, 16, 0.7);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), border-color var(--transition);
}
.site-header.scrolled {
    background: rgba(13, 13, 16, 0.92);
    border-bottom-color: var(--border);
}
.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-kanji {
    font-size: 1.5rem;
    color: var(--accent);
    line-height: 1;
}
.brand-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.88rem;
    padding: 9px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: color var(--transition), background var(--transition);
}
.nav-menu a:hover { color: var(--text); }
.nav-menu a.is-active { color: #fff; }
.nav-menu a.is-active:not(.nav-cta)::after {
    content: "";
    display: block;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 3px;
}
.nav-cta {
    background: var(--accent);
    color: #fff !important;
    margin-left: 8px;
}
.nav-cta:hover { background: var(--accent-dark); }

/* Bouton burger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------- Vues -------------------------------- */
.view { padding-top: var(--header-h); }
.view[hidden] { display: none; }

/* En-tête de page interne */
.page-hero {
    padding: clamp(48px, 7vw, 90px) 0 clamp(28px, 4vw, 48px);
    background:
        radial-gradient(circle at 80% -20%, rgba(226, 54, 54, 0.12), transparent 55%),
        var(--bg-soft);
    border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
.page-lead { color: var(--text-muted); max-width: 640px; font-size: 1.1rem; }

/* -------------------------------- Hero ------------------------------- */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-h));
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 75% 30%, rgba(226, 54, 54, 0.18), transparent 45%),
        radial-gradient(circle at 15% 80%, rgba(181, 101, 29, 0.12), transparent 45%),
        linear-gradient(180deg, #0d0d10 0%, #141319 100%);
}
.hero-bg::after {
    /* grille / lignes de vitesse subtiles */
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 80%);
}
.hero-content { position: relative; max-width: 760px; }
.hero-eyebrow {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--accent);
    font-size: 0.85rem;
    margin-bottom: 10px;
}
.hero-title {
    font-size: clamp(3.4rem, 12vw, 8rem);
    line-height: 0.92;
    margin: 0 0 18px;
    letter-spacing: 4px;
    text-transform: uppercase;
    background: linear-gradient(180deg, #fff 30%, #c4c5cd 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-subtitle {
    font-size: clamp(1.05rem, 2.5vw, 1.4rem);
    color: var(--text-muted);
    max-width: 560px;
    margin-bottom: 32px;
}
.hero-subtitle strong { color: var(--text); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 56px; }

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(24px, 6vw, 64px);
    margin: 0;
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats dt {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    color: #fff;
    line-height: 1;
}
.hero-stats dd {
    margin: 6px 0 0;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.75rem;
}

.scroll-cue {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.6rem;
    color: var(--text-dim);
    animation: bob 1.8s ease-in-out infinite;
}

/* --------------------------- Accueil : grilles ----------------------- */
.lead-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    font-size: 1.12rem;
    color: var(--text-muted);
    margin-bottom: 56px;
}
.lead-grid em { color: var(--accent); font-style: normal; font-weight: 600; }

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 22px;
}
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    transition: transform var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }
.card-icon { font-size: 1.8rem; display: block; margin-bottom: 14px; }
.card h3 { font-size: 1.25rem; }
.card p { color: var(--text-muted); margin: 0; }

/* ------------------------------- Prose ------------------------------- */
.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: 2rem; }
.prose p { color: var(--text-muted); }
.prose .note {
    border-left: 3px solid var(--rust);
    padding: 12px 16px;
    background: var(--bg-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.check-list { display: grid; gap: 12px; margin: 0 0 1rem; }
.check-list li {
    position: relative;
    padding-left: 32px;
    color: var(--text-muted);
}
.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent);
    font-weight: 700;
}

.callout {
    margin-top: 40px;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-elevated));
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: 28px;
}
.callout h3 { font-size: 1.3rem; }
.callout p { color: var(--text-muted); margin: 0; }

/* --------------------------- Fiche technique ------------------------- */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-bottom: 56px;
}
.spec {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.spec-label {
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.72rem;
    color: var(--text-dim);
}
.spec-value { font-family: var(--font-display); font-size: 1.15rem; }

/* ------------------------------ Timeline ----------------------------- */
.progress-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 26px;
    margin-bottom: 48px;
}
.progress-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}
.progress-pct { color: var(--accent); font-size: 1.4rem; }
.progress-bar {
    height: 10px;
    background: var(--bg-elevated);
    border-radius: 999px;
    overflow: hidden;
}
.progress-bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--rust), var(--accent));
    border-radius: 999px;
}

.timeline {
    position: relative;
    margin: 0;
    padding-left: 34px;
}
.timeline::before {
    content: "";
    position: absolute;
    left: 9px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: var(--border);
}
.timeline-item { position: relative; padding-bottom: 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
    position: absolute;
    left: -34px;
    top: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg);
    border: 3px solid var(--border);
}
.timeline-item.is-done .timeline-marker { border-color: var(--accent); background: var(--accent); }
.timeline-item.is-active .timeline-marker {
    border-color: var(--accent);
    box-shadow: 0 0 0 5px var(--accent-glow);
    animation: pulse 1.8s ease-in-out infinite;
}
.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
}
.timeline-item.is-active .timeline-content { border-color: var(--accent); }
.timeline-content h3 { font-size: 1.25rem; margin-bottom: 6px; }
.timeline-content p { color: var(--text-muted); margin: 0; }
.timeline-status {
    display: inline-block;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 999px;
    margin-bottom: 10px;
    background: var(--bg-elevated);
    color: var(--text-muted);
}
.is-done .timeline-status { background: rgba(226, 54, 54, 0.15); color: var(--accent); }
.is-active .timeline-status { background: var(--accent); color: #fff; }

/* ------------------------------ Galerie ------------------------------ */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.gallery-item {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    cursor: pointer;
    background-size: cover;
    background-position: center;
    transition: transform var(--transition);
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-item figcaption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 14px 16px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox-figure {
    max-width: 900px;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: var(--radius);
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow);
}
.lightbox-caption {
    position: absolute;
    bottom: 28px;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-muted);
}
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
}

/* ------------------------------ Journal ------------------------------ */
.posts { display: grid; gap: 20px; max-width: 760px; }
.post {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 28px;
    transition: border-color var(--transition);
}
.post:hover { border-color: var(--accent); }
.post-date {
    display: block;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.72rem;
    color: var(--accent);
    margin-bottom: 8px;
}
.post h2 { font-size: 1.4rem; }
.post p { color: var(--text-muted); }
.post-link {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.82rem;
    color: var(--accent);
}

/* ------------------------------ Contact ------------------------------ */
.contact-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
    align-items: start;
}
.contact-form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.field input, .field textarea {
    width: 100%;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    transition: border-color var(--transition);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field input:invalid:not(:placeholder-shown) { border-color: var(--accent-dark); }
.form-feedback { font-size: 0.92rem; color: var(--accent); margin: 0; min-height: 1.2em; }

.contact-aside {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
}
.contact-aside h3 { font-size: 1.25rem; }
.contact-aside p { color: var(--text-muted); }
.social-list { display: grid; gap: 10px; margin-top: 16px; }
.social-list a {
    display: block;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
    transition: border-color var(--transition), color var(--transition);
}
.social-list a:hover { border-color: var(--accent); color: var(--accent); }

/* ------------------------------- Footer ------------------------------ */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg-soft);
    padding-block: 48px;
    margin-top: 40px;
}
.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 28px;
    align-items: center;
}
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand .brand-kanji { font-size: 2rem; }
.footer-brand p { margin: 0; color: var(--text-muted); max-width: 360px; }
.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    justify-content: flex-end;
}
.footer-nav a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition);
}
.footer-nav a:hover { color: var(--accent); }
.footer-copy {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border);
    padding-top: 22px;
    margin: 0;
    color: var(--text-dim);
    font-size: 0.82rem;
}

/* ------------------------- Animations / reveal ----------------------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

@keyframes bob {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(8px); }
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 5px var(--accent-glow); }
    50%      { box-shadow: 0 0 0 10px transparent; }
}

/* --------------------------- Responsive ------------------------------ */
@media (max-width: 860px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed;
        inset: var(--header-h) 0 auto 0;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        background: var(--bg-soft);
        border-bottom: 1px solid var(--border);
        padding: 16px 24px 24px;
        transform: translateY(-120%);
        transition: transform var(--transition);
        box-shadow: var(--shadow);
    }
    .nav-menu.open { transform: translateY(0); }
    .nav-menu a { padding: 14px 12px; font-size: 1rem; }
    .nav-menu a.is-active::after { display: none; }
    .nav-cta { margin-left: 0; text-align: center; }

    .lead-grid { grid-template-columns: 1fr; gap: 16px; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-nav { justify-content: flex-start; }
}

@media (max-width: 480px) {
    .container { padding-inline: 18px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .btn { text-align: center; }
}

/* ------------------------- Préférences système ----------------------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
    .reveal { opacity: 1; transform: none; }
}