/* Explain: Component styles for cards, panels, and navigation elements. */
.site-header {
    background: var(--nav-bg);
    backdrop-filter: blur(18px);
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--sage-dark);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.section-kicker::before {
    display: inline-block;
    width: 2.4rem;
    height: 1px;
    background: var(--accent-color);
    content: "";
}

.glass-panel {
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.arch-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    background: var(--surface-color);
    box-shadow: var(--shadow-soft);
}

.arch-frame::after {
    position: absolute;
    inset: 1.1rem;
    border: 1px solid var(--background-color);
    border-radius: inherit;
    content: "";
    opacity: 0.6;
    pointer-events: none;
}

.arch-frame-large {
    height: min(74vh, 720px);
    min-height: 500px;
    border-radius: 999px 999px 2.5rem 2.5rem;
}

.arch-frame-medium {
    height: 620px;
    max-width: 450px;
    border-radius: 999px 999px 2.1rem 2.1rem;
}

.quiet-detail {
    border: 1px solid var(--glass-border);
    border-radius: 1.6rem;
    background: var(--glass-bg);
    padding: 1.25rem;
}

.quiet-detail span {
    display: inline-flex;
    margin-bottom: 0.6rem;
    color: var(--accent-color);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
}

.quiet-detail h3 {
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
}

.quiet-detail p {
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.75;
}

.activity-card {
    min-height: 250px;
    border-radius: 2.2rem;
    padding: 2rem;
    transition: transform 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
}

.activity-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-soft);
    transform: translateY(-6px);
}

.activity-icon {
    display: inline-flex;
    width: 3.25rem;
    height: 3.25rem;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--sage-soft);
    color: var(--sage-dark);
    font-size: 1.15rem;
}

.agenda-item {
    display: grid;
    grid-template-columns: minmax(0, auto) 1fr;
    gap: 0.75rem 1.5rem;
    align-items: start;
    border-radius: 1.8rem;
    padding: 1.35rem 1.5rem;
}

.agenda-time {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 6.5rem;
    border-radius: 999px;
    background: var(--sage-soft);
    color: var(--sage-dark);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 0.5rem 0.9rem;
}

.register-panel {
    overflow: hidden;
    border-radius: 2.4rem;
}

.register-panel iframe {
    display: block;
    width: 100%;
    height: 1250px;
    border: 0;
    background: var(--background-color);
}

.mobile-cta-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 45;
    border-top: 1px solid var(--glass-border);
    background: var(--nav-bg);
    padding: 0.85rem 1rem calc(0.85rem + env(safe-area-inset-bottom));
    backdrop-filter: blur(18px);
    transform: translateY(0);
    transition: transform 300ms ease;
}

.mobile-cta-bar.is-hidden {
    transform: translateY(120%);
}

@media (max-width: 767px) {
    .section-kicker::before {
        width: 1.6rem;
    }

    .arch-frame-large,
    .arch-frame-medium {
        height: 510px;
        min-height: 0;
    }

    .arch-frame-large {
        margin-right: auto;
        margin-left: auto;
        width: min(100%, 450px);
    }

    .agenda-item {
        grid-template-columns: 1fr;
    }

    .register-panel iframe {
        height: 1320px;
    }
}