:root {
    --primary: #0891b2;
    --primary-dark: #0e7490;
    --cta: #059669;
    --cta-dark: #047857;
    --bg: #ecfeff;
    --ink: #0f172a;
    --text: #164e63;
    --muted: #475569;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.011em;
    padding-bottom: 4.5rem;
}

@media (min-width: 768px) {
    body { padding-bottom: 0; }
}

h1, h2, h3, .h3, .h4, .h5, .brand-name, .footer-title, .display-5 {
    font-family: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--ink);
}

.display-5 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.15;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #cffafe;
}

.site-header .container { min-height: 64px; }

.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
    font-weight: 600;
    letter-spacing: -0.04em;
    font-size: 1.15rem;
}

.brand-name { font-size: 1rem; line-height: 1.2; }
.brand-city { font-size: 0.75rem; color: var(--muted); }

.nav-desktop {
    gap: 0.15rem;
}

.nav-desktop .nav-link {
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0.75rem;
}

.nav-desktop .nav-link.active,
.nav-desktop .nav-link:hover { color: var(--primary-dark); }

.btn-cta {
    background: var(--cta);
    border: 0;
    color: #fff;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.55rem 1.1rem;
}

.btn-cta:hover { background: var(--cta-dark); color: #fff; }

.btn-icon {
    border: 0;
    background: transparent;
    color: var(--ink);
}

.phone-link {
    color: var(--primary-dark);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 4rem 0 3rem;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at top right, #67e8f9 0%, transparent 45%),
        radial-gradient(circle at bottom left, #a7f3d0 0%, transparent 40%);
}

.hero .container { position: relative; }

.card-soft {
    background: #fff;
    border: 1px solid #cffafe;
    border-radius: 1rem;
}

.kicker {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--primary-dark);
}

.pill {
    display: inline-block;
    border-radius: 999px;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: #ecfeff;
    color: var(--primary-dark);
}

.site-footer {
    background: #0f172a;
    color: #ecfeff;
    margin-top: 3rem;
}

.site-footer a { color: #a5f3fc; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.site-footer .footer-title { color: #fff; font-weight: 600; }

.bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(255, 255, 255, 0.96);
    border-top: 1px solid #cffafe;
    padding-bottom: env(safe-area-inset-bottom);
}

.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 0.55rem 0;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--muted);
    text-decoration: none;
}

.bottom-nav a.is-active { color: var(--primary-dark); }

.day-chip, .filter-chip {
    border: 1px solid #cffafe;
    background: #fff;
    border-radius: 12px;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
}

.day-chip.is-active,
.filter-chip.is-active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.filter-chip.is-active { background: var(--ink); border-color: var(--ink); }

.class-card {
    width: 100%;
    text-align: left;
    background: #fff;
    border: 1px solid #cffafe;
    border-radius: 1rem;
    padding: 1rem;
    cursor: pointer;
}

.class-card:hover { border-color: var(--primary); }

.table { color: var(--text); }
.table th { font-size: 0.85rem; color: var(--muted); }

.price-card.is-hit {
    border-color: var(--cta);
    background: #ecfdf5;
}

.install-banner { display: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; }
}