:root {
    --background: #07090d;
    --background-soft: #0d1118;
    --surface: rgba(15, 23, 42, 0.66);
    --border: rgba(255, 255, 255, 0.1);

    --text-primary: #f8fafc;
    --text-secondary: #9ca3af;

    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-dark: #1d4ed8;

    --page-padding: clamp(20px, 5vw, 72px);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    overflow-x: hidden;

    font-family:
        "Space Grotesk",
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    color: var(--text-primary);
    background:
        radial-gradient(
            circle at 50% 18%,
            rgba(37, 99, 235, 0.2),
            transparent 34%
        ),
        radial-gradient(
            circle at 88% 72%,
            rgba(59, 130, 246, 0.1),
            transparent 28%
        ),
        var(--background);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;

    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: 58px 58px;

    mask-image:
        linear-gradient(
            to bottom,
            black,
            transparent 84%
        );
}

body::after {
    content: "";
    position: fixed;
    top: -180px;
    left: 50%;
    z-index: -1;

    width: min(720px, 88vw);
    height: 420px;

    transform: translateX(-50%);
    pointer-events: none;

    background: rgba(37, 99, 235, 0.22);
    filter: blur(130px);
    border-radius: 50%;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 20;

    display: flex;
    align-items: center;
    justify-content: space-between;

    width: 100%;
    min-height: 78px;
    padding: 0 var(--page-padding);

    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(7, 9, 13, 0.7);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.logo {
    position: relative;

    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.2em;
}

.logo::after {
    content: "";
    position: absolute;
    right: -13px;
    top: 3px;

    width: 7px;
    height: 7px;

    border-radius: 50%;
    background: var(--accent-light);

    box-shadow:
        0 0 12px var(--accent),
        0 0 24px rgba(59, 130, 246, 0.55);
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 42px;
    padding: 0 20px;

    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 600;

    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.045);

    transition:
        transform 180ms ease,
        border-color 180ms ease,
        background 180ms ease;
}

.nav-btn:hover {
    transform: translateY(-2px);
    border-color: rgba(96, 165, 250, 0.5);
    background: rgba(59, 130, 246, 0.1);
}

.hero {
    position: relative;
    isolation: isolate;

    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 100svh;
    padding:
        128px
        var(--page-padding)
        64px;

    text-align: center;
}

.hero::before {
    content: "";
    position: absolute;
    top: 20%;
    left: 50%;
    z-index: -1;

    width: min(560px, 80vw);
    aspect-ratio: 1;

    transform: translateX(-50%);
    border: 1px solid rgba(96, 165, 250, 0.08);
    border-radius: 50%;

    box-shadow:
        0 0 80px rgba(37, 99, 235, 0.08),
        inset 0 0 80px rgba(37, 99, 235, 0.04);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;

    width: min(900px, 100%);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;

    margin-bottom: 28px;
    padding: 9px 15px;

    color: #bfdbfe;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;

    border: 1px solid rgba(96, 165, 250, 0.24);
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);

    box-shadow:
        0 0 30px rgba(37, 99, 235, 0.1);

    animation: fade-up 700ms ease both;
}

.badge::before {
    content: "";
    width: 7px;
    height: 7px;

    border-radius: 50%;
    background: var(--accent-light);

    box-shadow: 0 0 12px var(--accent-light);
}

.hero h1 {
    max-width: 920px;

    font-size: clamp(3.1rem, 8vw, 7rem);
    line-height: 0.96;
    letter-spacing: -0.06em;
    text-wrap: balance;

    animation:
        fade-up 800ms 80ms ease both;
}

.hero h1::first-line {
    color: var(--text-primary);
}

.hero p {
    max-width: 690px;
    margin-top: 28px;

    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.22rem);
    line-height: 1.75;
    text-wrap: balance;

    animation:
        fade-up 800ms 160ms ease both;
}

.hero-btn {
    position: relative;
    isolation: isolate;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 58px;
    margin-top: 38px;
    padding: 0 30px;

    color: white;
    font-size: 1rem;
    font-weight: 700;

    border: 1px solid rgba(147, 197, 253, 0.42);
    border-radius: 999px;

    background:
        linear-gradient(
            135deg,
            var(--accent-light),
            var(--accent-dark)
        );

    box-shadow:
        0 16px 44px rgba(37, 99, 235, 0.34),
        0 0 0 1px rgba(255, 255, 255, 0.08) inset;

    transition:
        transform 180ms ease,
        box-shadow 180ms ease;

    animation:
        fade-up 800ms 240ms ease both;
}

.hero-btn::before {
    content: "";
    position: absolute;
    inset: -8px;
    z-index: -1;

    border-radius: inherit;
    background: rgba(59, 130, 246, 0.28);
    filter: blur(18px);

    opacity: 0.8;
    transition: opacity 180ms ease;
}

.hero-btn:hover {
    transform: translateY(-3px) scale(1.025);

    box-shadow:
        0 22px 54px rgba(37, 99, 235, 0.42),
        0 0 0 1px rgba(255, 255, 255, 0.12) inset;
}

.hero-btn:hover::before {
    opacity: 1;
}

.hero-btn:active {
    transform: translateY(-1px) scale(0.99);
}

.scroll {
    margin-top: 56px;

    color: #6b7280;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;

    animation:
        fade-up 800ms 320ms ease both,
        float 2.5s 1.2s ease-in-out infinite;
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(7px);
    }
}

@media (max-width: 700px) {
    .navbar {
        min-height: 68px;
    }

    .logo {
        font-size: 0.92rem;
    }

    .nav-btn {
        min-height: 38px;
        padding: 0 16px;
        font-size: 0.84rem;
    }

    .hero {
        padding-top: 110px;
        padding-bottom: 42px;
    }

    .badge {
        margin-bottom: 23px;
        padding: 8px 12px;
        font-size: 0.62rem;
        letter-spacing: 0.13em;
    }

    .hero h1 {
        font-size: clamp(3rem, 15vw, 4.8rem);
        line-height: 0.98;
    }

    .hero p {
        margin-top: 24px;
        font-size: 0.98rem;
        line-height: 1.65;
    }

    .hero-btn {
        width: min(100%, 300px);
        min-height: 55px;
        margin-top: 32px;
    }

    .scroll {
        margin-top: 44px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }
}

:root { --workout:#22c55e; --nutrition:#f59e0b; --progress:#38bdf8; --coach:#8b5cf6; }
body { background:radial-gradient(circle at 16% 23%,rgba(34,197,94,.13),transparent 25%),radial-gradient(circle at 83% 24%,rgba(139,92,246,.17),transparent 28%),radial-gradient(circle at 74% 84%,rgba(245,158,11,.1),transparent 24%),radial-gradient(circle at 50% 18%,rgba(56,189,248,.14),transparent 34%),var(--background); }
.logo { background:linear-gradient(90deg,#f8fafc,#7dd3fc 45%,#86efac);background-clip:text;-webkit-background-clip:text;color:transparent; }
.hero::after { content:"";position:absolute;z-index:-1;width:min(720px,90vw);height:min(720px,90vw);border-radius:50%;background:conic-gradient(from 0deg,rgba(34,197,94,.18),rgba(56,189,248,.15),rgba(139,92,246,.18),rgba(245,158,11,.13),rgba(34,197,94,.18));mask:radial-gradient(circle,transparent 64%,#000 65%,transparent 67%);opacity:.65;animation:spectrumSpin 24s linear infinite; }
.hero h1 span:first-child { background:linear-gradient(90deg,#f8fafc 5%,#86efac 72%,#22c55e);background-clip:text;-webkit-background-clip:text;color:transparent; }
.hero h1 span:last-child { background:linear-gradient(90deg,#7dd3fc,#c4b5fd 70%,#f0abfc);background-clip:text;-webkit-background-clip:text;color:transparent; }
.badge { color:#ddd6fe;border-color:rgba(139,92,246,.35);background:rgba(139,92,246,.1); }
.badge::before { background:var(--workout);box-shadow:0 0 14px var(--workout); }
.hero-btn { border-color:rgba(167,243,208,.4);background:linear-gradient(120deg,#16a34a,#0891b2 52%,#7c3aed);background-size:180% 100%;animation:fade-up 800ms 240ms ease both,buttonSpectrum 5s 1s ease-in-out infinite alternate; }
.feature-pills { display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px;animation:fade-up 800ms 290ms ease both; }
.feature-pill { position:relative;padding:8px 13px 8px 25px;border:1px solid color-mix(in srgb,var(--pill-color),transparent 68%);border-radius:999px;color:color-mix(in srgb,var(--pill-color),white 35%);background:color-mix(in srgb,var(--pill-color),transparent 91%);font-size:.75rem;font-weight:700;transition:transform .2s ease,background .2s ease; }
.feature-pill::before { content:"";position:absolute;left:11px;top:50%;width:6px;height:6px;border-radius:50%;background:var(--pill-color);box-shadow:0 0 10px var(--pill-color);transform:translateY(-50%); }
.feature-pill:hover { transform:translateY(-3px);background:color-mix(in srgb,var(--pill-color),transparent 85%); }
.workout-pill{--pill-color:var(--workout)}.nutrition-pill{--pill-color:var(--nutrition)}.progress-pill{--pill-color:var(--progress)}.coach-pill{--pill-color:var(--coach)}
@keyframes spectrumSpin { to { transform:rotate(360deg); } }
@keyframes buttonSpectrum { to { background-position:100% 0;box-shadow:0 20px 56px rgba(124,58,237,.34); } }

html[data-theme="light"] body{color:#15233a;background:radial-gradient(circle at 16% 23%,rgba(34,197,94,.16),transparent 25%),radial-gradient(circle at 83% 24%,rgba(139,92,246,.18),transparent 28%),radial-gradient(circle at 50% 18%,rgba(56,189,248,.2),transparent 34%),linear-gradient(145deg,#e9f8fb,#eef1ff 55%,#eaf8f2)}html[data-theme="light"] .navbar{background:rgba(241,249,252,.72);border-color:rgba(51,65,85,.1)}html[data-theme="light"] .logo{background:linear-gradient(90deg,#172554,#0284c7,#15803d);background-clip:text;-webkit-background-clip:text;color:transparent}html[data-theme="light"] .nav-btn{color:#334155;background:rgba(255,255,255,.55);border-color:rgba(71,85,105,.16)}html[data-theme="light"] .hero p{color:#52637a}html[data-theme="light"] .hero h1 span:first-child{background:linear-gradient(90deg,#172554,#15803d 76%);background-clip:text;-webkit-background-clip:text;color:transparent}html[data-theme="light"] .badge{color:#6d28d9;background:rgba(139,92,246,.09)}html[data-theme="light"] .scroll{color:#64748b}