:root {
    --bg: #06070c;
    --bg-alt: #0c0e18;
    --accent: #ff6a3d;
    --accent2: #7c5cff;
    --ink: #f5f3ee;
    --muted: #8b8fa3;
    --line: rgba(245, 243, 238, 0.1);

    --font-display: "Space Grotesk", sans-serif;
    --font-mono: "IBM Plex Mono", monospace;
    --font-body: "Inter", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-body);
    overflow-x: hidden;
}

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

/* ==========================================================
   Nav
   ========================================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px clamp(20px, 5vw, 64px);
    background: rgba(6, 7, 12, 0.55);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.nav__logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.02em;
}

.nav__logo em {
    font-style: normal;
    color: var(--accent);
}

.nav__links {
    display: flex;
    gap: 28px;
    font-size: 14px;
    color: var(--muted);
}

.nav__links a:hover {
    color: var(--ink);
}

.nav__status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 6px 12px;
}

.nav__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--muted);
}

.nav__dot.live {
    background: var(--accent);
    box-shadow: 0 0 8px 2px rgba(255, 106, 61, 0.6);
    animation: blink 1.3s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* ==========================================================
   Hero — pleine page
   ========================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 60px;
    overflow: hidden;
    background:
        radial-gradient(ellipse 60% 50% at 50% 40%, rgba(124, 92, 255, 0.16), transparent 70%),
        radial-gradient(ellipse 50% 40% at 50% 55%, rgba(255, 106, 61, 0.12), transparent 70%),
        var(--bg);
}

/* Ondes radio concentriques */
.hero__rings {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1px;
    height: 1px;
    pointer-events: none;
}

.hero__rings span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 140px;
    height: 140px;
    border: 1px solid var(--line);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(1);
}

.hero__rings span:nth-child(1) {
    width: 220px;
    height: 220px;
}

.hero__rings span:nth-child(2) {
    width: 340px;
    height: 340px;
}

.hero__rings span:nth-child(3) {
    width: 480px;
    height: 480px;
}

.hero__rings span:nth-child(4) {
    width: 640px;
    height: 640px;
}

.hero__rings.live span {
    border-color: rgba(255, 106, 61, 0.35);
    animation: ripple 3.2s ease-out infinite;
}

.hero__rings.live span:nth-child(2) {
    animation-delay: 0.6s;
}

.hero__rings.live span:nth-child(3) {
    animation-delay: 1.2s;
}

.hero__rings.live span:nth-child(4) {
    animation-delay: 1.8s;
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(0.85);
        opacity: 0;
    }

    15% {
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.15);
        opacity: 0;
    }
}

.hero__eyebrow {
    position: relative;
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin: 0 0 18px;
}

.hero__title {
    position: relative;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(42px, 9vw, 96px);
    line-height: 0.98;
    letter-spacing: -0.01em;
    margin: 0 0 18px;
}

.hero__sub {
    position: relative;
    font-size: 15px;
    color: var(--muted);
    margin: 0 0 40px;
}

.hero__play {
    position: relative;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: var(--ink);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 44px;
    transition: transform 0.2s ease, background 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 0 0 0 0 rgba(255, 106, 61, 0);
}

.hero__play:hover {
    transform: scale(1.06);
}

.hero__play:active {
    transform: scale(0.94);
}

.hero__play.live {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 0 0 0 10px rgba(255, 106, 61, 0.12);
}

.hero__eq {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 4px;
    height: 32px;
    margin-bottom: 36px;
}

.hero__eq span {
    width: 3px;
    height: 15%;
    background: var(--line);
    border-radius: 2px;
    transition: background 0.3s;
}

.hero__eq.live span {
    background: var(--accent2);
    animation: eq 1s ease-in-out infinite;
}

.hero__eq.live span:nth-child(4n) {
    background: var(--accent);
}

.hero__eq span:nth-child(odd) {
    animation-delay: 0.05s;
}

.hero__eq span:nth-child(3n) {
    animation-delay: 0.2s;
}

.hero__eq span:nth-child(5n) {
    animation-delay: 0.35s;
}

@keyframes eq {

    0%,
    100% {
        height: 15%;
    }

    50% {
        height: 100%;
    }
}

.hero__volume {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    width: 100%;
    max-width: 220px;
}

.hero__volume input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 3px;
    border-radius: 2px;
    background: var(--line);
    outline: none;
}

.hero__volume input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--ink);
    cursor: pointer;
}

.hero__volume input[type="range"]::-moz-range-thumb {
    width: 13px;
    height: 13px;
    border: none;
    border-radius: 50%;
    background: var(--ink);
    cursor: pointer;
}

/* ==========================================================
   About
   ========================================================== */
.about {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 100px clamp(24px, 6vw, 64px);
    border-top: 1px solid var(--line);
}

.about__text h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(26px, 3.4vw, 36px);
    line-height: 1.2;
    margin: 0 0 16px;
}

.about__text p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--muted);
    max-width: 46ch;
    margin: 0;
}

.about__cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 18px 20px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--bg-alt);
}

.card__label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
}

.card__value {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
}

/* ==========================================================
   Footer
   ========================================================== */
.foot {
    display: flex;
    justify-content: space-between;
    padding: 28px clamp(24px, 6vw, 64px) 36px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--muted);
    border-top: 1px solid var(--line);
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 780px) {
    .about {
        grid-template-columns: 1fr;
        gap: 36px;
        padding: 72px 24px;
    }
}

@media (max-width: 640px) {
    .nav__links {
        display: none;
    }

    .hero {
        padding: 110px 20px 50px;
    }

    .hero__rings span:nth-child(3),
    .hero__rings span:nth-child(4) {
        display: none;
    }

    .hero__eq {
        max-width: 260px;
        flex-wrap: wrap;
    }

    .foot {
        flex-direction: column;
        gap: 6px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    .hero__rings span,
    .hero__eq span,
    .nav__dot.live {
        animation: none !important;
        transition: none !important;
    }
}