:root {
    --bg: #000;
    --bg-alt: #0d0d0d;
    --text: #fff;
    --muted: #a8a8a8;
    --line: rgba(255, 255, 255, 0.22);
    --btn-bg: #fff;
    --btn-text: #000;
    --nav-bg: rgba(0, 0, 0, 0.8);
    --display: 'Oswald', 'Prompt', 'Arial Narrow', sans-serif;
    --body: 'Inter', 'Prompt', system-ui, sans-serif;
    --w-display: 300;
    --w-ui: 400;
}

[data-theme="light"] {
    --bg: #fff;
    --bg-alt: #f2f2f2;
    --text: #000;
    --muted: #555;
    --line: rgba(0, 0, 0, 0.25);
    --btn-bg: #000;
    --btn-text: #fff;
    --nav-bg: rgba(255, 255, 255, 0.85);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
    font-family: var(--body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background-color .25s ease, color .25s ease;
}

h1, h2, h3 { font-weight: var(--w-display); }

h1, h2, h3, .brand-logo, .price, .btn-primary, .btn-secondary, .floating-contact {
    font-family: var(--display);
}

h2, h3, .btn-primary, .btn-secondary, .floating-contact, .brand-logo, .nav-links a {
    text-transform: uppercase;
}

/* Thai and uppercase/letter-spacing do not mix: spacing detaches vowel and tone marks */
:lang(th) h1, :lang(th) h2, :lang(th) h3, :lang(th) .btn-primary, :lang(th) .btn-secondary,
 :lang(th) .floating-contact, :lang(th) .contact-btn, :lang(th) .nav-links a { letter-spacing: 0; }

:lang(th) .hero-title { letter-spacing: 8px; }

a:focus-visible, button:focus-visible, select:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 3px;
}

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 50;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    padding: 10px 24px;
}
.nav-container {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand-logo {
    color: var(--text); text-decoration: none;
    font-size: 1.25rem; font-weight: 500; letter-spacing: 3px;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a {
    color: var(--text); text-decoration: none;
    font-family: var(--display); font-size: .95rem; letter-spacing: 1.5px;
}
.nav-links a:hover { text-decoration: underline; text-underline-offset: 6px; }
.nav-controls { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
    background: none; color: var(--text);
    border: 1px solid var(--line); border-radius: 0;
    width: 36px; height: 36px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
[data-theme="dark"] .sun-icon, [data-theme="light"] .moon-icon { display: block; }
[data-theme="dark"] .moon-icon, [data-theme="light"] .sun-icon { display: none; }

.lang-select {
    background: var(--bg); color: var(--text);
    border: 1px solid var(--line); border-radius: 0;
    height: 36px; padding: 0 8px; font-family: var(--body); cursor: pointer;
}


/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block; cursor: pointer; text-decoration: none; text-align: center;
    padding: 14px 30px; border-radius: 0;
    font-size: 1rem; font-weight: var(--w-ui); letter-spacing: 2px;
}
.btn-primary { background: #fff; color: #000; border: 1px solid #fff; }
.btn-secondary { background: transparent; color: #fff; border: 1px solid #fff; }
.btn-primary:hover { background: transparent; color: #fff; }
.btn-secondary:hover { background: #fff; color: #000; }
.dark-on-light { color: var(--text); border-color: var(--text); }
.dark-on-light:hover { background: var(--text); color: var(--bg); }

/* Hero */
.hero {
    position: relative; min-height: 100svh;
    display: flex; align-items: flex-end;
    overflow: hidden; color: #fff;
    padding: 120px 24px 72px;
    background: #000 url("hero-poster.jpg") center / cover no-repeat;
}
.hero-video {
    position: absolute; inset: 0; width: 100%; height: 100%;
    object-fit: cover; z-index: 1;
}
.hero-shade {
    position: absolute; inset: 0; z-index: 2;
    background: linear-gradient(to top, rgba(0,0,0,.85) 0%, rgba(0,0,0,.35) 60%, rgba(0,0,0,.45) 100%);
}
.hero-content { position: relative; z-index: 3; max-width: 1200px; width: 100%; margin: 0 auto; }
.hero-title {
    font-size: clamp(4rem, 15vw, 11rem);
    line-height: .9; font-weight: var(--w-display); letter-spacing: 8px;
    margin-bottom: 28px;
}
.hero-subtitle { max-width: 520px; font-size: 1.1rem; margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* Sections */
.container { max-width: 1100px; margin: 0 auto; padding: 88px 24px; }
.section-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: var(--w-display); letter-spacing: 3px; line-height: 1.1;
    margin-bottom: 20px;
}
.section-desc { color: var(--muted); margin-bottom: 40px; }

/* About */
.about { background: var(--bg-alt); }
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about-photo img { display: block; width: 100%; height: auto; }
.about-photo figcaption { margin-top: 12px; color: var(--muted); font-size: .9rem; display: flex; gap: 12px; flex-wrap: wrap; }
.master-name { color: var(--text); font-weight: 600; }
.about-text p { max-width: 52ch; color: var(--muted); }

/* Price list */
.price-list { list-style: none; border-top: 1px solid var(--line); }
.price-list li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.price-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; }
.price-head h3 { font-size: 1.5rem; font-weight: var(--w-ui); letter-spacing: 1.5px; }
.price-list li p { color: var(--muted); font-size: .95rem; margin-top: 2px; max-width: 60ch; }
.price { font-size: 1.6rem; font-weight: var(--w-ui); white-space: nowrap; }
.price small { font-family: var(--body); font-size: .8rem; font-weight: 400; color: var(--muted); margin-right: 4px; }

/* Location */
.location { background: var(--bg-alt); }
.location-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.address { margin-bottom: 28px; max-width: 34ch; }
.contact-buttons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.contact-btn {
    display: flex; align-items: center; justify-content: center;
    min-height: 52px; padding: 0 8px;
    border: 1px solid var(--text); color: var(--text); text-decoration: none;
    font-family: var(--display); font-size: 1rem; font-weight: var(--w-ui); letter-spacing: 2px; text-transform: uppercase;
}
.contact-btn:hover { background: var(--text); color: var(--bg); }

.map-wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px 88px; }
.map { display: block; width: 100%; height: 420px; border: 1px solid var(--line); filter: grayscale(1) contrast(1.05); }
[data-theme="dark"] .map { filter: grayscale(1) invert(.92) contrast(.9); }

.footer { text-align: center; padding: 28px; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); }

/* Floating contact button */
.floating-contact {
    position: fixed; right: 20px; bottom: 20px; z-index: 40;
    background: var(--btn-bg); color: var(--btn-text);
    border: none; border-radius: 0; cursor: pointer;
    padding: 12px 22px; font-size: .95rem; font-weight: var(--w-ui); letter-spacing: 2px;
    box-shadow: 0 4px 18px rgba(0,0,0,.4);
}

/* Contact dialog */
.dialog {
    margin: auto; width: min(92vw, 420px);
    background: var(--bg); color: var(--text);
    border: 1px solid var(--text); padding: 36px 28px 28px;
}
.dialog::backdrop { background: rgba(0,0,0,.7); }
.dialog h3 { font-size: 1.8rem; letter-spacing: 2px; margin-bottom: 8px; }
.dialog p { color: var(--muted); margin-bottom: 24px; }
.dialog-close {
    position: absolute; top: 8px; right: 12px;
    background: none; border: none; color: var(--text); font-size: 1.8rem; cursor: pointer; line-height: 1;
}
.dialog-buttons { display: flex; flex-direction: column; gap: 12px; }
.dialog .btn-primary { background: var(--btn-bg); color: var(--btn-text); border-color: var(--btn-bg); }
.dialog .btn-primary:hover { background: transparent; color: var(--text); border-color: var(--text); }
.dialog .btn-secondary { color: var(--text); border-color: var(--text); }
.dialog .btn-secondary:hover { background: var(--text); color: var(--bg); }

/* Mobile */
@media (max-width: 800px) {
    :root { --w-display: 400; }
    .hero-title, :lang(th) .hero-title { letter-spacing: 4px; }
    .nav-links { display: none; }
    .navbar { padding: 8px 16px; }
    .brand-logo { font-size: 1.05rem; letter-spacing: 2px; }
    .about-grid, .location-grid { grid-template-columns: 1fr; gap: 36px; }
    .container { padding: 64px 20px; }
    .hero { padding: 100px 20px 56px; }
    .contact-btn { letter-spacing: 1px; font-size: .9rem; }