/* Explain: Component styles including glass panels and realistic 3D book effects. - */
.site-header {
    background: linear-gradient(180deg, rgba(250, 249, 246, 0.86), rgba(250, 249, 246, 0.52));
    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: linear-gradient(145deg, rgba(250, 249, 246, 0.78), rgba(255, 255, 255, 0.48));
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
}

.arch-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(88, 129, 87, 0.38);
    background: var(--surface-color);
    box-shadow: var(--shadow-soft);
}

.arch-frame::after {
    position: absolute;
    inset: 1.1rem;
    border: 1px solid rgba(250, 249, 246, 0.62);
    border-radius: inherit;
    content: "";
    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;
}

.floating-note {
    position: absolute;
    right: -1.5rem;
    bottom: 4rem;
    display: flex;
    max-width: 250px;
    align-items: center;
    gap: 0.85rem;
    border-radius: 999px;
    padding: 1rem 1.2rem;
    color: var(--text-color);
    font-size: 0.82rem;
    font-weight: 600;
}

.story-card {
    position: absolute;
    right: 0;
    bottom: 2.5rem;
    max-width: 290px;
    border-radius: 2rem;
    padding: 1.5rem;
}

.quiet-detail,
.amenity-row,
.contact-note {
    border: 1px solid var(--glass-border);
    border-radius: 1.6rem;
    background: rgba(250, 249, 246, 0.58);
    padding: 1.25rem;
}

.quiet-detail span {
    display: inline-flex;
    margin-bottom: 0.9rem;
    color: var(--accent-color);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
}

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

.class-card {
    min-height: 360px;
    border-radius: 2.2rem;
    padding: 2rem;
    transition: transform 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
}

.class-card:hover {
    border-color: rgba(88, 129, 87, 0.58);
    box-shadow: 0 26px 80px rgba(31, 46, 35, 0.11);
    transform: translateY(-6px);
}

.amenity-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
}

.amenity-dot {
    width: 0.8rem;
    height: 0.8rem;
    margin-top: 0.4rem;
    border-radius: 999px;
    background: var(--accent-color);
    box-shadow: 0 0 0 0.45rem var(--terracotta-soft);
}

.amenity-image-wrap {
    height: 660px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    border-radius: 3rem 999px 999px 3rem;
    box-shadow: var(--shadow-soft);
}

.booking-form,
.booking-overlay-panel {
    border-radius: 2.4rem;
    padding: clamp(1.5rem, 4vw, 2.5rem);
}

.form-label {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--text-color);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.form-status.success {
    color: #4A6B53;
}

.form-status.error {
    color: #9B4A3D;
}

.mobile-book-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 45;
    border-top: 1px solid var(--glass-border);
    background: rgba(250, 249, 246, 0.86);
    padding: 0.85rem 1rem calc(0.85rem + env(safe-area-inset-bottom));
    backdrop-filter: blur(18px);
}

.booking-overlay {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: none;
    overflow-y: auto;
    background: rgba(31, 46, 35, 0.32);
    padding: 1rem;
}

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

.booking-overlay-panel {
    min-height: calc(100vh - 2rem);
    background: var(--background-color);
    box-shadow: 0 30px 90px rgba(31, 46, 35, 0.22);
}

/* Hyper-Realistic 3D Book */
.book-3d-container {
    perspective: 1400px;
    display: flex;
    justify-content: center;
    align-items: center;
    --book-depth: 32px;
}

.book-volume {
    position: relative;
    height: 100%;
    aspect-ratio: 2.1 / 3;
    transform-style: preserve-3d;
    transform: rotateY(-28deg) rotateX(12deg);
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.book-volume:hover {
    transform: rotateY(-8deg) rotateX(6deg) scale(1.06);
}

/* Floating Drop Shadow */
.book-volume::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.1);
    transform: translateZ(calc(var(--book-depth) * -0.5)) scale(0.95);
    filter: blur(15px);
    box-shadow: -15px 25px 30px rgba(31, 46, 35, 0.25);
    transition: transform 0.6s ease, box-shadow 0.6s ease;
    border-radius: 4px;
    pointer-events: none;
}

.book-volume:hover::after {
    transform: translateZ(calc(var(--book-depth) * -0.5 - 10px)) scale(0.92);
    box-shadow: -5px 15px 20px rgba(31, 46, 35, 0.15);
}

/* FRONT COVER */
.book-cover {
    position: absolute;
    inset: 0;
    transform: translateZ(var(--book-depth));
    transform-style: preserve-3d;
    border-radius: 2px 6px 6px 2px;
    z-index: 10;
    background: var(--sage-dark);
}

.book-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.book-cover-overlay {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(
        to right,
        rgba(255,255,255,0.2) 0%,
        rgba(255,255,255,0.0) 3%,
        rgba(0,0,0,0.1) 4%,
        rgba(255,255,255,0.0) 10%,
        rgba(0,0,0,0.0) 90%,
        rgba(0,0,0,0.15) 100%
    );
    box-shadow: inset 3px 0 6px rgba(255,255,255,0.4), inset -1px 0 2px rgba(0,0,0,0.3);
    pointer-events: none;
}

/* SPINE */
.book-spine {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--book-depth);
    transform-origin: left center;
    transform: rotateY(-90deg);
    background: #2b332d;
    border-radius: 4px 0 0 4px;
    box-shadow: inset 3px 0 6px rgba(255,255,255,0.1), inset -2px 0 4px rgba(0,0,0,0.5);
}

.book-spine::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.3) 0%, rgba(255,255,255,0.05) 30%, rgba(0,0,0,0.4) 100%);
    border-radius: inherit;
}

/* PAGES (RIGHT) */
.book-pages-right {
    position: absolute;
    right: 0;
    top: 3px;
    bottom: 3px;
    width: var(--book-depth);
    transform-origin: right center;
    transform: rotateY(90deg);
    background: linear-gradient(to right, #dcdcd6, #f9f9f5, #dcdcd6);
    background-image: repeating-linear-gradient(to bottom, transparent, transparent 2px, rgba(0,0,0,0.04) 2px, rgba(0,0,0,0.04) 3px), linear-gradient(to right, #dcdcd6, #f9f9f5, #dcdcd6);
    border-radius: 0 3px 3px 0;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.1);
}

/* PAGES (BOTTOM) */
.book-pages-bottom {
    position: absolute;
    bottom: 0;
    left: 3px;
    right: 3px;
    height: var(--book-depth);
    transform-origin: bottom center;
    transform: rotateX(-90deg);
    background: linear-gradient(to bottom, #dcdcd6, #f9f9f5, #dcdcd6);
    background-image: repeating-linear-gradient(to right, transparent, transparent 2px, rgba(0,0,0,0.04) 2px, rgba(0,0,0,0.04) 3px), linear-gradient(to bottom, #dcdcd6, #f9f9f5, #dcdcd6);
    border-radius: 0 0 3px 3px;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.1);
}

/* BACK COVER */
.book-back {
    position: absolute;
    inset: 0;
    transform: translateZ(0);
    background: #2b332d;
    border-radius: 2px 6px 6px 2px;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.6);
}

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

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

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

    .floating-note,
    .story-card {
        position: relative;
        right: auto;
        bottom: auto;
        margin: -2.5rem auto 0;
    }

    .amenity-image-wrap {
        border-radius: 999px 999px 2rem 2rem;
    }
}