.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.navbar--scrolled {
    box-shadow: 0 2px 24px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.navbar--hidden {
    transform: translateY(-110%);
}

#scrollTopBtn {
    position: fixed;
    bottom: 80px;
    right: 20px;
    z-index: 990;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.2s ease;
}
#scrollTopBtn:hover {
    transform: scale(1.1);
    background: var(--color-accent);
    color: #000;
}

.kvcc-loaded .hero {
    animation: kvcc-fadein 0.5s ease forwards;
}
@keyframes kvcc-fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

body.is-offline::before {
    content: '⚠ You are offline';
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #b71c1c;
    color: #fff;
    text-align: center;
    padding: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 99999;
}
.is-offline .requires-online {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
}

body:not(.fonts-loaded) {
    visibility: hidden;
}
body.fonts-loaded {
    visibility: visible;
}

.nav-link.active {
    color: var(--color-accent) !important;
    font-weight: 600;
}
.nav-link.active::after {
    width: 100% !important;
}

.sermon-card,
.belief-card,
.testimony-card {
    transition: transform 0.15s ease, box-shadow 0.2s ease;
    transform-style: preserve-3d;
}

img.img-loading {
    opacity: 0.4;
    filter: blur(6px);
    transition: opacity 0.4s ease, filter 0.4s ease;
}
img.img-loaded {
    opacity: 1;
    filter: none;
}
img.img-error {
    opacity: 0.6;
    filter: grayscale(1);
}
.kvcc-toast-popup {
    font-family: var(--font-ui, 'Inter', sans-serif) !important;
    font-size: 0.9rem !important;
}
[data-theme="dark"] .hero-pattern {
    opacity: 0.04;
}