:root {
    --bg-dark: #0a0a0a;
    --bg-panel: #111111;
    --bg-panel-2: #161616;
    --text-main: #cccccc;
    --text-dim: #8a8a8a;
    --steel-gray: #444444;
    --steel-light: #5a5a5a;
    --orange-fusion: #d35400;
    --orange-glow: #e67e22;
    --rad-green: #8fdb3a;
    --font-title: 'Black Ops One', system-ui;
    --font-text: 'Share Tech Mono', monospace;
    --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-text);
    overflow-x: hidden;
    background-image:
        radial-gradient(900px circle at 50% -10%, rgba(211, 84, 0, 0.18), transparent 60%),
        linear-gradient(rgba(10, 10, 10, 0.92), rgba(10, 10, 10, 0.95)),
        url('data:image/svg+xml;utf8,<svg width="40" height="40" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h40v40H0z" fill="none"/><path d="M0 39h40M39 0v40" stroke="%23222" stroke-width="1"/></svg>');
    background-attachment: fixed;
}

/* ============ COUCHES D'AMBIANCE ============ */
.ash-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.scanlines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background: repeating-linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0,
        rgba(0, 0, 0, 0) 2px,
        rgba(0, 0, 0, 0.22) 3px,
        rgba(0, 0, 0, 0) 4px
    );
    opacity: 0.35;
    mix-blend-mode: multiply;
}

.vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    box-shadow: inset 0 0 220px 60px rgba(0, 0, 0, 0.9);
}

/* contenu au-dessus des couches d'ambiance */
.navbar, main, .site-footer { position: relative; z-index: 3; }

/* ============ NAVBAR ============ */
.navbar {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: rgba(17, 17, 17, 0.78);
    backdrop-filter: blur(8px);
    border-bottom: 2px solid var(--steel-gray);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.navbar.scrolled {
    border-bottom-color: var(--orange-fusion);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.6);
}

.navbar-inner {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    max-height: 70px;
    filter: drop-shadow(0 0 10px rgba(211, 84, 0, 0.35));
    transition: transform 0.3s ease, filter 0.3s ease;
}

.logo:hover {
    transform: scale(1.04);
    filter: drop-shadow(0 0 16px rgba(230, 126, 34, 0.6));
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 1px;
    transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--orange-glow); }

.nav-links .nav-cta {
    color: var(--orange-glow);
    border: 2px solid var(--steel-gray);
    padding: 8px 16px;
    transition: all 0.25s ease;
}

.nav-links .nav-cta:hover {
    border-color: var(--orange-fusion);
    background: rgba(211, 84, 0, 0.12);
    box-shadow: 0 0 14px rgba(211, 84, 0, 0.35);
    color: #fff;
}

.status-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    letter-spacing: 1px;
    color: var(--rad-green);
    border: 1px solid rgba(143, 219, 58, 0.35);
    padding: 6px 12px;
    border-radius: 2px;
    white-space: nowrap;
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--rad-green);
    box-shadow: 0 0 8px var(--rad-green);
    animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

/* ============ HERO ============ */
.hero-section {
    position: relative;
    min-height: calc(100vh - 95px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
}

.hero-content { max-width: 900px; }

.eyebrow {
    color: var(--orange-glow);
    letter-spacing: 4px;
    font-size: 0.85rem;
    margin-bottom: 1.2rem;
    opacity: 0.9;
    animation: flicker 4s infinite steps(1);
}

@keyframes flicker {
    0%, 92%, 100% { opacity: 0.9; }
    93% { opacity: 0.25; }
    95% { opacity: 0.9; }
    96% { opacity: 0.3; }
}

h1 {
    font-family: var(--font-title);
    font-size: clamp(2rem, 6vw, 4rem);
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 2px;
    line-height: 1.08;
    margin-bottom: 1.2rem;
    text-shadow: 3px 3px 0px var(--orange-fusion);
}

/* effet glitch léger sur le titre */
.glitch { position: relative; }
.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    overflow: hidden;
    opacity: 0.75;
}
.glitch::before {
    color: var(--orange-glow);
    text-shadow: 2px 0 var(--orange-glow);
    animation: glitch-x 4.5s infinite linear alternate-reverse;
    clip-path: inset(0 0 55% 0);
}
.glitch::after {
    color: var(--rad-green);
    text-shadow: -2px 0 var(--rad-green);
    animation: glitch-x 3.2s infinite linear alternate-reverse;
    clip-path: inset(60% 0 0 0);
}
@keyframes glitch-x {
    0%, 80%, 100% { transform: translateX(0); }
    82% { transform: translateX(-3px); }
    84% { transform: translateX(3px); }
    86% { transform: translateX(-2px); }
    88% { transform: translateX(0); }
}

.subtitle {
    font-size: clamp(1rem, 2.2vw, 1.3rem);
    margin-bottom: 2.6rem;
    color: #a9a9a9;
}

.btn-download {
    display: inline-block;
    background-color: var(--bg-panel);
    color: var(--orange-glow);
    font-family: var(--font-title);
    font-size: clamp(1.1rem, 2.4vw, 1.5rem);
    text-decoration: none;
    padding: 16px 42px;
    border: 3px solid var(--steel-gray);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    z-index: 0;
}

/* balayage lumineux au survol */
.btn-download::before {
    content: "";
    position: absolute;
    top: 0;
    left: -120%;
    width: 80%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(230, 126, 34, 0.35), transparent);
    transition: left 0.5s ease;
    z-index: -1;
}

.btn-download:hover::before { left: 130%; }

.btn-download:hover {
    border-color: var(--orange-fusion);
    background-color: rgba(211, 84, 0, 0.1);
    box-shadow: 0 0 22px rgba(211, 84, 0, 0.45) inset, 0 0 26px rgba(211, 84, 0, 0.5);
    color: #ffffff;
    transform: translateY(-2px);
}

.version-info {
    margin-top: 1.1rem;
    font-size: 0.9rem;
    opacity: 0.65;
}

/* indicateur de défilement */
.scroll-cue {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    width: 26px;
    height: 42px;
    border: 2px solid var(--steel-light);
    border-radius: 14px;
    display: flex;
    justify-content: center;
}
.scroll-cue span {
    width: 4px;
    height: 8px;
    margin-top: 7px;
    background: var(--orange-glow);
    border-radius: 2px;
    animation: scroll-down 1.6s infinite;
}
@keyframes scroll-down {
    0% { opacity: 0; transform: translateY(-4px); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateY(14px); }
}

/* ============ SECTIONS GÉNÉRIQUES ============ */
section { padding: 0 24px; }

.section-head {
    max-width: 760px;
    margin: 0 auto 3rem;
    text-align: center;
}

.section-head h2,
.download-panel h2 {
    font-family: var(--font-title);
    font-size: clamp(1.6rem, 4vw, 2.6rem);
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0.4rem 0 0.8rem;
    text-shadow: 2px 2px 0 var(--orange-fusion);
}

.section-sub { color: var(--text-dim); font-size: 1.05rem; }

/* ============ STATS ============ */
.stats-band {
    max-width: var(--maxw);
    margin: 0 auto;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    border-top: 1px solid #1d1d1d;
    border-bottom: 1px solid #1d1d1d;
}

.stat {
    text-align: center;
    padding: 14px;
    border: 1px solid #1c1c1c;
    background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
}

.stat-num {
    display: block;
    font-family: var(--font-title);
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    color: var(--orange-glow);
    text-shadow: 0 0 18px rgba(230, 126, 34, 0.35);
    line-height: 1;
}

.stat-label {
    display: block;
    margin-top: 0.6rem;
    color: var(--text-dim);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============ FEATURES ============ */
.features-section { max-width: var(--maxw); margin: 0 auto; padding-top: 6rem; padding-bottom: 6rem; }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.feature-card {
    background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
    border: 1px solid #232323;
    border-left: 3px solid var(--steel-gray);
    padding: 28px 26px;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-left-color: var(--orange-fusion);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(211, 84, 0, 0.25);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 0.9rem;
    filter: drop-shadow(0 0 10px rgba(211, 84, 0, 0.5));
}

.feature-card h3 {
    font-family: var(--font-title);
    color: #fff;
    font-size: 1.25rem;
    font-weight: normal;
    margin-bottom: 0.7rem;
    letter-spacing: 0.5px;
}

.feature-card p { color: var(--text-dim); line-height: 1.6; font-size: 0.98rem; }

/* ============ FACTIONS ============ */
.factions-section {
    max-width: var(--maxw);
    margin: 0 auto;
    padding-top: 5rem;
    padding-bottom: 6rem;
}

.faction-list {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}

.faction-chip {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid #2a2a2a;
    padding: 14px 20px;
    font-size: 1rem;
    color: var(--text-main);
    transition: all 0.25s ease;
    cursor: default;
}

.faction-chip span {
    display: block;
    margin-top: 4px;
    font-size: 0.72rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--orange-glow);
    opacity: 0.8;
}

.faction-chip:hover {
    border-color: var(--orange-fusion);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 0 18px rgba(211, 84, 0, 0.3);
}

/* ============ DOWNLOAD CTA ============ */
.download-section {
    max-width: var(--maxw);
    margin: 0 auto;
    padding-top: 2rem;
    padding-bottom: 6rem;
}

.download-panel {
    text-align: center;
    padding: 4rem 2rem;
    border: 1px solid #2a2a2a;
    background:
        radial-gradient(600px circle at 50% 0%, rgba(211, 84, 0, 0.16), transparent 70%),
        linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
    box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.6);
}

.download-panel p { color: var(--text-dim); max-width: 560px; margin: 0 auto 2rem; line-height: 1.6; }
.download-panel .version-info { margin-top: 1.1rem; }

/* ============ FOOTER ============ */
.site-footer {
    border-top: 2px solid var(--steel-gray);
    background: var(--bg-panel);
    padding: 2.5rem 24px;
    text-align: center;
}

.footer-terminal {
    max-width: 420px;
    margin: 0 auto 1.6rem;
    text-align: left;
    background: #050505;
    border: 1px solid #222;
    padding: 16px 18px;
    font-size: 0.85rem;
    line-height: 1.7;
}

.footer-terminal .prompt { color: var(--rad-green); }
.footer-terminal .ok { color: var(--text-dim); }
.footer-terminal .ok span { color: var(--orange-glow); }

.copyright { color: #666; font-size: 0.8rem; letter-spacing: 0.5px; }

/* ============ ANIMATIONS AU SCROLL ============ */
[data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 760px) {
    .nav-links { display: none; }
    .stats-band { grid-template-columns: repeat(2, 1fr); }
    .logo { max-height: 56px; }
    .status-pill { font-size: 0.68rem; padding: 5px 9px; }
}

/* respect des préférences d'accessibilité */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
}