:root,
[data-bs-theme="light"] {
    --surface: rgba(255, 255, 255, 0.82);
    --surface-solid: #ffffff;
    --surface-muted: #f3f5f7;
    --text-soft: #5e6673;
    --brand: #0f6b63;
    --brand-rgb: 15, 107, 99;
    --brand-contrast: #ffffff;
    --ring: rgba(var(--brand-rgb), 0.2);
    --hero-gradient:
        radial-gradient(circle at 12% 18%, rgba(15, 107, 99, 0.14), transparent 28rem),
        radial-gradient(circle at 86% 10%, rgba(16, 24, 40, 0.08), transparent 24rem),
        linear-gradient(135deg, #f7f4ef 0%, #f8fbfb 48%, #eef3f2 100%);
}

[data-bs-theme="dark"] {
    --surface: rgba(18, 24, 31, 0.82);
    --surface-solid: #111820;
    --surface-muted: #18212b;
    --text-soft: #a8b3c2;
    --brand: #5ee0ce;
    --brand-rgb: 94, 224, 206;
    --brand-contrast: #08201d;
    --ring: rgba(var(--brand-rgb), 0.24);
    --hero-gradient:
        radial-gradient(circle at 14% 12%, rgba(94, 224, 206, 0.16), transparent 27rem),
        radial-gradient(circle at 82% 4%, rgba(255, 255, 255, 0.08), transparent 23rem),
        linear-gradient(135deg, #07100f 0%, #0b131a 52%, #101820 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: var(--hero-gradient);
    font-family:
        "Segoe UI",
        "Helvetica Neue",
        Arial,
        sans-serif;
    transition:
        background-color 200ms ease,
        color 200ms ease;
}

.site-shell {
    min-height: 100vh;
}

.navbar {
    backdrop-filter: blur(18px);
    background: var(--surface);
    border-bottom: 1px solid var(--bs-border-color-translucent);
}

.navbar-brand {
    letter-spacing: -0.04em;
}

.nav-action {
    align-items: center;
    border-color: var(--bs-border-color-translucent);
    border-radius: 999px;
    display: inline-flex;
    height: 2.35rem;
    justify-content: center;
    padding: 0;
    width: 2.35rem;
}

.nav-action .bi {
    font-size: 1.05rem;
    line-height: 1;
}

.theme-toggle {
    min-width: 0;
}

.hero {
    padding: 7.5rem 0 5rem;
}

.eyebrow {
    color: var(--brand);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero-title {
    font-size: 3rem;
    letter-spacing: -0.05em;
}

.hero-copy,
.section-copy {
    color: var(--text-soft);
}

.glass-card {
    background: var(--surface);
    border: 1px solid var(--bs-border-color-translucent);
    border-radius: 2rem;
    box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.12);
    backdrop-filter: blur(20px);
}

.form-card {
    position: relative;
    overflow: hidden;
}

.form-card::before {
    position: absolute;
    inset: 0 0 auto;
    height: 0.35rem;
    background: linear-gradient(90deg, var(--brand), rgba(var(--brand-rgb), 0.2));
    content: "";
}

.stat-card,
.about-card {
    background: var(--surface-solid);
    border: 1px solid var(--bs-border-color-translucent);
    border-radius: 1.5rem;
}

.brand-button {
    --bs-btn-bg: var(--brand);
    --bs-btn-border-color: var(--brand);
    --bs-btn-color: var(--brand-contrast);
    --bs-btn-hover-bg: var(--brand);
    --bs-btn-hover-border-color: var(--brand);
    --bs-btn-hover-color: var(--brand-contrast);
    --bs-btn-active-bg: var(--brand);
    --bs-btn-active-border-color: var(--brand);
    --bs-btn-active-color: var(--brand-contrast);
    box-shadow: 0 1rem 2rem var(--ring);
}

.formkit-powered-by-convertkit-container {
    display: none !important;
}

.subscribe-form .form-control {
    background-color: var(--surface-solid);
    border-radius: 1rem;
    min-height: 3.35rem;
}

.subscribe-form .form-control:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 0.25rem var(--ring);
}

.social-proof {
    color: var(--text-soft);
    font-size: 0.92rem;
}

.mini-divider {
    width: 3rem;
    height: 0.2rem;
    background: var(--brand);
    border-radius: 999px;
}

[data-bs-theme="dark"] .navbar-toggler {
    filter: invert(1) grayscale(1);
}

@media (max-width: 991.98px) {
    .hero {
        padding-top: 6rem;
    }

    .navbar .btn {
        width: 2.35rem;
    }
}