/* ==========================================================================
   โรงแรม เซ็นทรัล เพลส สมุทรสาคร (Central Place Hotel Samut Sakhon)
   Master Stylesheet: css/style.css
   ========================================================================== */

/* 1. นำเข้าฟอนต์จาก Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&family=Noto+Sans+Thai:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* 2. ตัวแปรสีและธีมหลัก (Design Tokens) */
:root {
    --color-primary-bg: #FAF7F2;
    --color-text-dark: #1F2937;
    --color-accent-gold: #B39257;
    --color-accent-gold-hover: #997B43;
    --color-accent-gold-light: #F4EEDF;
    --color-text-muted: #4B5563;
    --color-border-light: #E5E7EB;
}

/* 3. การตั้งค่าพื้นฐาน */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--color-primary-bg);
    color: var(--color-text-dark);
    font-family: 'Plus Jakarta Sans', 'Noto Sans Thai', sans-serif;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.section-soft {
    background: linear-gradient(180deg, #ffffff 0%, #fdfbf9 100%);
}

.section-alt {
    background: linear-gradient(180deg, #f7f2ea 0%, #f4ead9 100%);
}

.section-contrast {
    background: linear-gradient(135deg, #ecd9b8 0%, #f9f3ea 45%, #f3e4c9 100%);
}

.section-ivory {
    background: linear-gradient(180deg, #ffffff 0%, #f9f4ee 100%);
}

.section-sand {
    background: linear-gradient(180deg, #f7f2ea 0%, #f4ead9 100%);
}

.section-mist {
    background: linear-gradient(180deg, #ffffff 0%, #fdfbf9 100%);
}

body.page-ready {
    opacity: 1;
}

.site-shell {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

body.page-loading .site-shell {
    opacity: 0.15;
    transform: translateY(12px);
}

#page-loader {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(250, 247, 242, 0.92);
    backdrop-filter: blur(10px);
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

body.page-ready #page-loader {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader-inner {
    width: min(90vw, 720px);
    display: grid;
    gap: 18px;
    padding: 28px 24px;
}

.skeleton-line {
    height: 18px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(179,146,87,0.08) 0%, rgba(179,146,87,0.18) 25%, rgba(179,146,87,0.08) 50%, rgba(179,146,87,0.18) 75%, rgba(179,146,87,0.08) 100%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.2s linear infinite;
}

.skeleton-line.short { width: 38%; }
.skeleton-line.medium { width: 62%; }
.skeleton-line.long { width: 100%; }
.skeleton-box {
    height: 220px;
    border-radius: 24px;
    background: linear-gradient(90deg, rgba(179,146,87,0.08) 0%, rgba(179,146,87,0.18) 25%, rgba(179,146,87,0.08) 50%, rgba(179,146,87,0.18) 75%, rgba(179,146,87,0.08) 100%);
    background-size: 200% 100%;
    animation: skeletonShimmer 1.2s linear infinite;
}

@keyframes skeletonShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.reveal-on-scroll {
    opacity: 0;
    transform: translate3d(0, 36px, 0) scale(0.985);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.18, 1.15, 0.25, 1);
    /* will-change: opacity, transform; */
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
}

.blog-shell {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(179, 146, 87, 0.18);
    border-radius: 32px;
    box-shadow: 0 30px 80px -48px rgba(31, 41, 55, 0.35);
    padding: 32px 30px 18px;
}

.blog-header {
    margin-bottom: 28px;
}

@media (min-width: 992px) {
    .blog-shell {
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
    }

    .blog-card,
    .blog-featured-card,
    .blog-side-card,
    .blog-founders-card {
        background: transparent;
        border: none;
        box-shadow: none;
        border-radius: 0;
    }
}

.blog-featured-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.8fr) minmax(320px, 0.9fr);
    gap: 28px;
    align-items: stretch;
}

.blog-card,
.blog-featured-card,
.blog-side-card,
.blog-founders-card {
    border-radius: 28px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(179, 146, 87, 0.15);
    box-shadow: 0 18px 42px -28px rgba(31, 41, 55, 0.24);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.blog-card:hover,
.blog-featured-card:hover,
.blog-side-card:hover,
.blog-founders-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 60px -34px rgba(31, 41, 55, 0.28);
}

.blog-featured-card {
    position: relative;
    min-height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background-size: cover;
    background-position: center;
}

.blog-featured-card .featured-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.1) 8%, rgba(17, 24, 39, 0.72) 100%);
}

.blog-featured-card .featured-content {
    position: relative;
    z-index: 1;
    padding: 28px 26px 24px;
    color: #fff;
}

.blog-featured-card .featured-tag {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(8px);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: 14px;
}

.blog-featured-card h3 {
    font-size: clamp(1.7rem, 2vw, 2.5rem);
    line-height: 1.12;
    font-family: 'Playfair Display', 'Kanit', serif;
    margin-bottom: 12px;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.blog-side-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.blog-side-card {
    display: grid;
    grid-template-columns: 124px 1fr;
    gap: 14px;
    padding: 10px;
    align-items: center;
    cursor: pointer;
}

.blog-side-card img {
    display: block;
    width: 124px;
    height: 92px;
    object-fit: cover;
    border-radius: 18px;
}

.blog-side-card .side-label {
    color: #B39257;
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 8px;
}

.blog-side-card h4 {
    font-size: 1.05rem;
    line-height: 1.38;
    font-family: 'Playfair Display', 'Kanit', serif;
    margin-bottom: 8px;
}

.blog-side-card .meta-line {
    color: #6b7280;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.blog-founders {
    margin-top: 38px;
}

.blog-founders-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.blog-founders-header h2 {
    font-size: clamp(2rem, 2.2vw, 2.5rem);
    font-family: 'Playfair Display', 'Kanit', serif;
    color: #1F2937;
}

.blog-founders-header .nav-buttons {
    display: flex;
    gap: 10px;
}

.blog-founders-header .nav-button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid rgba(31, 41, 55, 0.14);
    background: rgba(255, 255, 255, 0.8);
    color: #1F2937;
    display: flex;
    align-items: center;
    justify-content: center;
}

.blog-founders-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.blog-founders-card {
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.blog-founders-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.blog-founders-card .founders-body {
    padding: 18px 18px 20px;
}

.blog-founders-card .founders-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #f5efe6;
    color: #8a6734;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 12px;
}

.blog-founders-card .founders-tag::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #B39257;
    display: inline-block;
}

.blog-founders-card h3 {
    font-size: 1.4rem;
    font-family: 'Playfair Display', 'Kanit', serif;
    line-height: 1.25;
    margin-bottom: 12px;
}

.blog-founders-card p {
    color: #4B5563;
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

.blog-founders-card .meta-line {
    color: #6b7280;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

@media (max-width: 1024px) {
    .blog-featured-layout {
        grid-template-columns: 1fr;
    }

    .blog-founders-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .blog-shell {
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 0;
        border-radius: 0;
    }

    .blog-header {
        text-align: left;
        margin-bottom: 20px;
    }

    .blog-header h1 {
        font-size: 2.2rem;
        line-height: 1.05;
    }

    .blog-featured-layout {
        gap: 18px;
    }

    .blog-featured-card {
        min-height: 280px;
        border-radius: 24px;
    }

    .blog-featured-card .featured-content {
        padding: 20px 18px 18px;
    }

    .blog-featured-card h3 {
        font-size: 1.7rem;
    }

    .blog-side-card {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
        border-radius: 0;
    }

    .blog-side-card img {
        width: 100%;
        height: 200px;
        border-radius: 22px;
    }

    .blog-side-card > div {
        padding: 0 4px 0;
    }

    .blog-side-card h4 {
        font-size: 1.2rem;
        margin-bottom: 6px;
    }

    .blog-side-card .side-label,
    .blog-side-card .meta-line {
        margin-left: 0;
    }

    .blog-founders {
        margin-top: 26px;
    }

    .blog-founders-header {
        margin-bottom: 14px;
    }

    .blog-founders-header h2 {
        font-size: 2rem;
    }

    .blog-founders-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .blog-founders-card {
        background: transparent;
        border: none;
        box-shadow: none;
        border-radius: 0;
    }

    .blog-founders-card img {
        height: 220px;
        border-radius: 22px;
    }

    .blog-founders-card .founders-body {
        padding: 14px 0 0;
    }

    .blog-founders-card h3 {
        font-size: 1.55rem;
    }

    .blog-founders-card p {
        margin-bottom: 8px;
    }
}

.gallery-showcase {
    background: #050d12;
    border-radius: 32px;
    padding: clamp(22px, 2.2vw, 36px);
    color: #fff;
    box-shadow: 0 26px 60px -40px rgba(0, 0, 0, 0.7);
}

.gallery-hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.5fr);
    gap: 2rem;
    align-items: center;
}

.gallery-hero-copy {
    padding: 0.5rem 0;
}

.gallery-hero-copy h2 {
    font-family: 'Playfair Display', 'Kanit', serif;
    font-size: clamp(2.3rem, 3vw, 4rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
    margin-bottom: 1rem;
    max-width: 560px;
}

.gallery-hero-copy p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 480px;
    margin-bottom: 1.5rem;
}

.gallery-hero-copy button {
    appearance: none;
    border: none;
    background: linear-gradient(135deg, #f39b4a, #d66e30);
    color: #fff;
    border-radius: 12px;
    padding: 0.9rem 1.6rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: 0 16px 30px -18px rgba(214, 110, 48, 0.8);
}

.gallery-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 1.4fr 1.05fr;
    gap: 18px;
    min-height: 420px;
}

.gallery-tile {
    position: relative;
    overflow: hidden;
    border-radius: 22px;
    background: #111827;
    box-shadow: 0 18px 32px -24px rgba(0, 0, 0, 0.85);
    cursor: pointer;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.gallery-tile:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 38px -24px rgba(0, 0, 0, 0.9);
}

.gallery-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-tile.tile-a { min-height: 180px; }
.gallery-tile.tile-b { min-height: 240px; }
.gallery-tile.tile-c { min-height: 250px; }
.gallery-tile.tile-d { min-height: 200px; }
.gallery-tile.tile-e { min-height: 220px; }
.gallery-tile.tile-f { min-height: 210px; }

.gallery-marquee-shell {
    margin-top: 2.2rem;
    overflow: hidden;
    position: relative;
    border-radius: 24px;
}

.gallery-marquee-shell::before,
.gallery-marquee-shell::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 90px;
    z-index: 1;
    pointer-events: none;
}

.gallery-marquee-shell::before {
    left: 0;
    background: linear-gradient(90deg, rgba(5, 13, 18, 1) 0%, rgba(5, 13, 18, 0) 100%);
}

.gallery-marquee-shell::after {
    right: 0;
    background: linear-gradient(270deg, rgba(5, 13, 18, 1) 0%, rgba(5, 13, 18, 0) 100%);
}

.gallery-marquee-track {
    display: flex;
    width: max-content;
    gap: 18px;
    animation: gallerySlide 28s linear infinite;
}

.gallery-marquee-track:hover {
    animation-play-state: paused;
}

.gallery-marquee-track .gallery-tile {
    flex: 0 0 clamp(220px, 20vw, 320px);
    height: 220px;
}

@keyframes gallerySlide {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@media (max-width: 900px) {
    .gallery-showcase {
        padding: 20px 16px 18px;
    }

    .gallery-hero-panel {
        grid-template-columns: 1fr;
    }

    .gallery-hero-copy h2 {
        max-width: 100%;
    }

    .gallery-hero-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        min-height: 0;
    }
}

@media (max-width: 640px) {
    .gallery-showcase {
        border-radius: 20px;
    }

    .gallery-hero-copy h2 {
        font-size: 2.4rem;
    }

    .gallery-hero-grid {
        grid-template-columns: 1fr;
    }

    .gallery-hero-grid .gallery-tile {
        height: 220px;
        min-height: 220px;
    }
}

.promo-featured {
    background: linear-gradient(135deg, rgba(244, 238, 223, 1) 0%, rgba(255,255,255,0.96) 48%, rgba(240, 232, 214, 0.88) 100%);
    border: 1px solid rgba(179, 146, 87, 0.28);
    box-shadow: 0 22px 45px -28px rgba(120, 90, 39, 0.45);
}

.promo-featured .promo-badge {
    box-shadow: 0 12px 18px -10px rgba(179, 146, 87, 0.55);
}

.section-stripe {
    background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(250,247,242,0.9));
}

/* ฟอนต์ Serif สไตล์ Luxury */
.font-serif-luxury {
    font-family: 'Playfair Display', 'Kanit', serif;
}

/* 4. ระบบสลับภาษา Real-time */
body.lang-en .lang-th {
    display: none !important;
}

body.lang-th .lang-en {
    display: none !important;
}

body.lang-cn .lang-th,
body.lang-cn .lang-en {
    display: none !important;
}

body:not(.lang-cn) .lang-cn {
    display: none !important;
}

/* 5. เอฟเฟกต์ Hover Underline Animation */
.hover-underline-animation {
    display: inline-block;
    position: relative;
}

.hover-underline-animation::after {
    content: '';
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-accent-gold);
    transform-origin: bottom center;
    transition: transform 0.3s ease-out;
}

.hover-underline-animation:hover::after {
    transform: scaleX(1);
}

/* 6. ปุ่มลอยและ Animation (Floating Spring) */
.floating-spring {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.floating-hidden {
    opacity: 0;
    transform: translateY(3rem) scale(0.85);
    pointer-events: none;
}

.floating-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* 7. Dropdown Menu Styles (Navbar) */

#navbar .dropdown-menu-wrapper:hover .rooms-dropdown-toggle,
#navbar .dropdown-menu-wrapper.is-active .rooms-dropdown-toggle {
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
}
.dropdown-menu-wrapper {
    position: relative;
}

.rooms-dropdown-toggle {
    background: transparent;
    border: 0;
    box-shadow: none;
    transition: all 0.25s ease;
    padding: 0.35rem 0.5rem;
    border-radius: 9999px;
}

.lang-dropdown-toggle {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(31, 41, 55, 0.45);
    box-shadow: 0 10px 25px -18px rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.25s ease;
}

#navbar.text-white .lang-dropdown-toggle {
    background: rgba(17, 24, 39, 0.16);
    border-color: rgba(255, 255, 255, 0.55);
    color: #fff;
    box-shadow: none;
}

#navbar.text-white .lang-dropdown-toggle:hover,
#navbar.text-white .dropdown-menu-wrapper:hover .lang-dropdown-toggle,
#navbar.text-white .dropdown-menu-wrapper.is-active .lang-dropdown-toggle {
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(17, 24, 39, 0.26);
}

#navbar:not(.text-white) .dropdown-menu-wrapper:hover .rooms-dropdown-toggle,
#navbar:not(.text-white) .dropdown-menu-wrapper.is-active .rooms-dropdown-toggle,
#navbar:not(.text-white) .dropdown-menu-wrapper:hover .lang-dropdown-toggle,
#navbar:not(.text-white) .dropdown-menu-wrapper.is-active .lang-dropdown-toggle {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(31, 41, 55, 0.12);
    box-shadow: 0 12px 24px -20px rgba(15, 23, 42, 0.55);
}

#navbar.text-white .dropdown-menu-wrapper:hover .rooms-dropdown-toggle,
#navbar.text-white .dropdown-menu-wrapper.is-active .rooms-dropdown-toggle {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.28);
    color: #fff;
}

.dropdown-menu-content {
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
}

.dropdown-menu-wrapper:hover .dropdown-menu-content,
.dropdown-menu-wrapper.is-active .dropdown-menu-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

#mobile-menu {
    background: rgba(250, 247, 242, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 30px 60px -20px rgba(15, 23, 42, 0.25);
}

.mobile-lang-panel,
.mobile-room-panel {
    transition: all 0.25s ease;
}

.mob-lang-btn {
    background: #fff;
    border-color: #E5E7EB;
    color: #4B5563;
}

.mob-lang-btn.active {
    background: #1F2937;
    border-color: #1F2937;
    color: #fff;
    box-shadow: 0 12px 25px -18px rgba(31, 41, 55, 0.8);
}

.mobile-lang-chevron,
.mobile-room-chevron {
    transition: transform 0.2s ease;
}

.rotate-180 {
    transform: rotate(180deg);
}

/* 8. Building Tabs & Active States */
.building-tab-btn {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(179, 146, 87, 0.28);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.building-tab-btn.active {
    background: linear-gradient(135deg, #c5a263 0%, var(--color-accent-gold) 100%);
    border-color: var(--color-accent-gold);
    color: #FFFFFF;
    box-shadow: 0 12px 24px -10px rgba(120, 87, 35, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.28);
    transform: translateY(-1px);
}

.building-tab-btn:not(.active) {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(179, 146, 87, 0.32);
    color: var(--color-text-dark);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.building-tab-btn:not(.active):hover {
    background: var(--color-accent-gold-light);
    border-color: rgba(179, 146, 87, 0.65);
    color: var(--color-accent-gold-hover);
    transform: translateY(-1px);
}

.building-tab-btn:focus-visible {
    outline: 3px solid rgba(179, 146, 87, 0.3);
    outline-offset: 3px;
}

.building-tab-btn .num-icon {
    background: #e9e9e7 !important;
    color: var(--color-text-dark) !important;
    box-shadow: 0 2px 6px rgba(31, 41, 55, 0.12);
}

.building-tab-btn.active .num-icon {
    background: #FFFFFF !important;
    color: var(--color-accent-gold) !important;
    box-shadow: 0 2px 7px rgba(31, 41, 55, 0.2);
}

/* 9. Room & Meeting Card Enhancements */
.room-card {
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.room-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px -10px rgba(31, 41, 55, 0.12);
}

/* 10. Auto-sliding photo strips for rooms, meetings, and overview galleries */
.auto-slider {
    position: relative;
    overflow: hidden;
    border-radius: 1.25rem;
    border: 1px solid rgba(179, 146, 87, 0.18);
    background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(250,247,242,0.95));
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    touch-action: pan-y;
}

.auto-slider.is-dragging {
    cursor: grabbing;
}

.auto-slider.is-dragging * {
    user-select: none;
    -webkit-user-select: none;
}

.auto-slider-track {
    display: flex;
    gap: 1rem;
    width: max-content;
    will-change: transform;
    padding: 1rem;
}

.auto-slider-item {
    flex: 0 0 280px;
    background: #fff;
    border-radius: 1.25rem;
    overflow: hidden;
    border: 1px solid rgba(31, 41, 55, 0.08);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

@media (max-width: 640px) {
    .auto-slider-item {
        flex-basis: 220px;
    }

    .auto-slider-track {
        gap: 0.75rem;
        padding: 0.75rem;
    }
}

.auto-slider-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.auto-slider-item .caption {
    padding: 0.8rem 1rem 1rem;
    font-size: 0.74rem;
    color: var(--color-text-muted);
    background: #fff;
}

/* 11. Room & Meeting Photo Gallery Modal System */
.room-modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.room-modal-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.room-modal-container {
    background: #FFFFFF;
    border-radius: 1.5rem;
    max-width: 56rem;
    width: 100%;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.room-modal-backdrop.is-open .room-modal-container {
    transform: scale(1) translateY(0);
}

.room-modal-thumbnail {
    transition: all 0.2s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.room-modal-thumbnail.active {
    border-color: var(--color-accent-gold);
    transform: scale(1.05);
}

/* ซ่อน Scrollbar ของ Thumbnail Strip */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* 11. Custom Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-primary-bg);
}

::-webkit-scrollbar-thumb {
    background: #D1D5DB;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-gold);
}