/* Explain: Styles for site header, buttons, inputs, layout, and scroll animations. - */
.site-header {
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.nav-link::after {
    position: absolute;
    right: 0;
    bottom: 0.35rem;
    left: 0;
    height: 2px;
    background: var(--primary-color);
    content: "";
    opacity: 0;
    transform: scaleX(0.45);
    transition: opacity 0.2s cubic-bezier(0.2, 1, 0.3, 1), transform 0.2s cubic-bezier(0.2, 1, 0.3, 1);
}

.nav-link:hover {
    color: var(--text-color);
}

.nav-link:hover::after {
    opacity: 1;
    transform: scaleX(1);
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.section-kicker::before {
    display: inline-block;
    width: 2rem;
    height: 2px;
    background: var(--primary-color);
    content: "";
}

.glass-panel,
.class-card,
.booking-form,
.booking-overlay-panel {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--surface-color);
    box-shadow: var(--shadow-soft);
}

.glass-panel,
.class-card {
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.glass-panel:hover,
.class-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.arch-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--surface-color);
}

.arch-frame-large,
.arch-frame-medium {
    min-height: 480px;
}

.class-card {
    min-height: 320px;
    padding: clamp(1.5rem, 3vw, 2.25rem);
}

.amenity-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
    padding: 1.25rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.amenity-row:hover {
    border-color: var(--secondary-color);
    transform: translateY(-2px);
}

.amenity-dot {
    display: flex;
    width: 2.5rem;
    height: 2.5rem;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--surface-elevated);
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.amenity-dot::after {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-size: 0.9rem;
    font-weight: 900;
}

.booking-form,
.booking-overlay-panel {
    padding: clamp(1.5rem, 4vw, 2.5rem);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-status.success { color: #4ade80; }
.form-status.error { color: #f87171; }

.booking-overlay {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: none;
    overflow-y: auto;
    align-items: flex-start;
    justify-content: center;
    background: rgba(9, 9, 11, 0.9);
    padding: 1rem;
    backdrop-filter: blur(8px);
}

.booking-overlay.is-open {
    display: flex;
}

.booking-overlay-panel {
    width: min(100%, 40rem);
    margin: auto 0;
}

.partner-swiper {
    overflow: visible;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.partner-swiper .swiper-wrapper {
    transition-timing-function: linear !important;
}

.btn {
    min-height: 2.75rem;
    border-radius: var(--radius-sm) !important;
    border: 1px solid transparent;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(244, 63, 94, 0.35);
}

.btn:active {
    transform: translateY(1px) scale(0.98);
}

.input,
.textarea {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm) !important;
    background: var(--field-bg);
    color: var(--text-color);
    box-shadow: none;
    transition: border-color 0.2s ease;
}

.input:focus,
.textarea:focus {
    border-color: var(--primary-color);
    background: var(--surface-color);
    box-shadow: none;
    outline: none;
}

.mobile-book-bar {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    z-index: 45;
}

footer {
    border-top: 1px solid var(--border-color);
    background: var(--footer-bg);
}

@media (max-width: 767px) {
    .section-kicker::before { width: 1.5rem; }
    .booking-overlay-panel { margin: 0; border-radius: var(--radius-md); }
}

/* Scroll Animations */
.reveal-on-scroll {
    opacity: 0;
    transition: opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1), transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}
.reveal-fade-up { transform: translateY(30px); }
.reveal-fade-in { transform: scale(0.98); }
.reveal-slide-left { transform: translateX(-30px); }
.reveal-slide-right { transform: translateX(30px); }
.reveal-on-scroll.is-revealed {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Scanning Animation */
@keyframes scan {
    0% { top: -5%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 105%; opacity: 0; }
}
.animate-scan {
    animation: scan 3.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}