:root {
  --ink: #231810;
  --muted: #6b5344;
  --bg: #f3ebe3;
  --bg-soft: #e8ddd2;
  --panel: #fffaf6;
  --line: rgba(35, 24, 16, 0.12);
  --accent: #c45f1a;
  --accent-deep: #9a4510;
  --amber: #e8a060;
  --on-accent: #fffaf6;
  --font: 'Anuphan', sans-serif;
  --heading: 'Prompt', 'Anuphan', sans-serif;
  --mono: 'IBM Plex Mono', 'Anuphan', monospace;
  --max: 1080px;
  --demo-h: 48px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
  font-synthesis: none;
  background:
    radial-gradient(ellipse 50% 35% at 100% 0%, rgba(232, 160, 96, 0.28), transparent 55%),
    radial-gradient(ellipse 40% 30% at 0% 50%, rgba(196, 95, 26, 0.08), transparent 50%),
    linear-gradient(180deg, #f7f0e9, var(--bg));
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; font-size: 16px; color: inherit; }
ul { list-style: none; }
.wrap { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.demo-bar {
  position: sticky; top: 0; z-index: 60;
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; padding: 0.55rem 1.25rem;
  background: #1a120c; color: #fff; font-size: 0.82rem;
}
.demo-bar strong {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em;
  color: var(--amber); font-weight: 500;
}
.demo-bar__actions { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.demo-bar a {
  padding: 0.35rem 0.7rem; border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius); font-size: 0.78rem; font-weight: 500;
}
.demo-bar a.is-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

.site-header {
  position: sticky; top: var(--demo-h); z-index: 50;
  background: rgba(243, 235, 227, 0.94); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h); position: relative;
}
.brand {
  font-family: var(--heading); font-weight: 700; font-size: 1.28rem;
  display: inline-flex; align-items: baseline; gap: 0.45rem;
}
.brand small {
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent-deep); font-weight: 500;
}
.menu-toggle {
  display: none; background: none; border: 1px solid var(--line);
  padding: 0.45rem 0.8rem; cursor: pointer; border-radius: var(--radius);
}
.nav { display: flex; align-items: center; gap: 1.15rem; }
.nav a { font-size: 0.92rem; font-weight: 500; color: var(--muted); }
.nav-cta {
  background: var(--accent); color: var(--on-accent) !important;
  padding: 0.55rem 1.05rem; border-radius: var(--radius); font-weight: 700;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.9rem 1.4rem; font-weight: 700; border-radius: var(--radius);
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--ghost { color: #fff; border-color: rgba(255,255,255,0.45); background: transparent; }
.btn--block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.hero {
  position: relative; min-height: min(90dvh, 820px);
  display: flex; align-items: flex-end; color: #fff; overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img {
  width: 100%; height: 100%; object-fit: cover;
  animation: ken 22s var(--ease) both;
}
.hero__media::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(115deg, rgba(26, 18, 12, 0.92) 0%, rgba(35, 24, 16, 0.62) 48%, rgba(35, 24, 16, 0.28) 100%),
    linear-gradient(0deg, rgba(26, 18, 12, 0.75) 0%, transparent 42%);
}
.hero__inner {
  position: relative; z-index: 1; padding: 5rem 0 3.5rem; max-width: 38rem;
  margin-left: max(calc((100% - var(--max)) / 2), 1.25rem);
  width: min(100% - 2.5rem, 38rem);
  animation: rise 0.9s var(--ease) both;
}
.hero__brand {
  font-family: var(--heading); font-size: 1.35rem; font-weight: 700;
  margin-bottom: 1rem; display: flex; gap: 0.5rem; align-items: baseline; flex-wrap: wrap;
}
.hero__brand span {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--amber);
}
.hero h1 {
  font-family: var(--heading); font-size: clamp(2.2rem, 5.2vw, 3.5rem);
  line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 0.9rem;
}
.hero h1 em {
  display: block; font-style: normal; color: var(--amber);
  font-size: 0.72em; margin-top: 0.25rem;
}
.hero__lead { color: rgba(255,255,255,0.88); margin-bottom: 1.5rem; font-size: 1.05rem; }

@keyframes ken { from { transform: scale(1.06); } to { transform: scale(1); } }
@keyframes rise { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }

.section { padding: 4.5rem 0; }
.section--soft { background: var(--bg-soft); }
.section--accent {
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, rgba(232, 160, 96, 0.18), transparent 50%),
    #1f1610;
  color: #f6efe8;
}
.section__head { margin-bottom: 2rem; max-width: 36rem; }
.section__head h2 {
  font-family: var(--heading); font-size: clamp(1.75rem, 3.2vw, 2.4rem);
  line-height: 1.2; margin-bottom: 0.55rem;
}
.section__head p { color: var(--muted); }
.eyebrow {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.55rem; font-weight: 500;
}
.eyebrow.light { color: var(--amber); }

.day-meta {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem;
  align-items: baseline; margin-bottom: 1.25rem;
}
.day-meta__date {
  font-family: var(--heading); font-weight: 700; font-size: 1.15rem;
}
.day-meta__note {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
}

.session-board {
  border: 1.5px solid var(--ink);
  background: var(--panel);
  overflow: hidden;
}
.session-board__cols {
  display: grid;
  grid-template-columns: 7.5rem 1fr 6.5rem 5.5rem 7rem;
  gap: 0.75rem;
  padding: 0.65rem 1.1rem;
  background: var(--ink);
  color: rgba(255,250,246,0.7);
  font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.session-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 6.5rem 5.5rem 7rem;
  gap: 0.75rem;
  align-items: center;
  padding: 1.05rem 1.1rem;
  border-top: 1px solid var(--line);
  transition: background 0.2s var(--ease);
}
.session-row:hover { background: rgba(196, 95, 26, 0.06); }
.session-row--hot {
  background: linear-gradient(90deg, rgba(196, 95, 26, 0.1), transparent 55%);
}
.session-row__time {
  font-family: var(--mono); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.02em;
}
.session-row__body h3 {
  font-family: var(--heading); font-size: 1.05rem; font-weight: 600;
  margin-bottom: 0.15rem;
}
.session-row__body p { font-size: 0.88rem; color: var(--muted); }
.session-row__room {
  font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.04em;
}
.status {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em;
  text-transform: uppercase; font-weight: 500;
}
.status--open { color: #2f7a3e; }
.status--hold { color: var(--accent-deep); }
.status--late { color: #6b5344; }
.row-btn {
  border: 1.5px solid var(--ink); background: transparent;
  padding: 0.5rem 0.65rem; cursor: pointer; font-weight: 600; font-size: 0.82rem;
  border-radius: var(--radius); transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.row-btn:hover { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }

.room-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}
.room-chip {
  display: grid; gap: 0.65rem; text-align: left;
  border: 1.5px solid var(--line); background: var(--panel);
  padding: 0; cursor: pointer; border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.room-chip:hover, .room-chip.is-active {
  border-color: var(--accent); transform: translateY(-2px);
}
.room-chip img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.room-chip span { display: grid; gap: 0.15rem; padding: 0 0.85rem 0.9rem; }
.room-chip strong { font-family: var(--heading); font-size: 1rem; }
.room-chip small {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
}

.eng-split {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2.5rem; align-items: center;
}
.lede { color: var(--muted); margin: 0.75rem 0 1.25rem; max-width: 32rem; }
.eng-list { display: grid; gap: 0.75rem; }
.eng-list li {
  display: flex; gap: 0.85rem; align-items: baseline;
  padding-bottom: 0.75rem; border-bottom: 1px solid var(--line);
  font-size: 0.98rem;
}
.eng-list span {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); min-width: 3.5rem;
}
.eng-photo { overflow: hidden; border-radius: var(--radius); }
.eng-photo img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.eng-photo figcaption {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); margin-top: 0.65rem;
}

.book {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 2.5rem; align-items: start;
}
.book p { color: rgba(246, 239, 232, 0.75); margin-top: 0.5rem; }
.book h2 {
  font-family: var(--heading); font-size: clamp(1.7rem, 3vw, 2.3rem); margin-top: 0.35rem;
}
.form {
  display: grid; gap: 0.9rem;
  background: rgba(255,250,246,0.05); border: 1px solid rgba(255,250,246,0.14);
  padding: 1.4rem; border-radius: var(--radius);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }
.field { display: grid; gap: 0.35rem; }
.field label {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: rgba(246, 239, 232, 0.65);
}
.field input, .field select, .field textarea {
  background: rgba(255,250,246,0.06); border: 1px solid rgba(255,250,246,0.2);
  padding: 0.75rem 0.85rem; border-radius: var(--radius); color: #fffaf6;
}
.field textarea { resize: vertical; min-height: 5rem; }

.site-footer {
  border-top: 1px solid var(--line); padding: 1.5rem 0; background: var(--bg-soft);
}
.footer {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; font-size: 0.88rem; color: var(--muted);
}

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .session-board__cols { display: none; }
  .session-row {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "time status"
      "body body"
      "room btn";
    gap: 0.45rem 0.75rem;
  }
  .session-row__time { grid-area: time; }
  .session-row__body { grid-area: body; }
  .session-row__room { grid-area: room; align-self: center; }
  .status { grid-area: status; justify-self: end; }
  .row-btn { grid-area: btn; justify-self: end; }
  .room-rail { grid-template-columns: 1fr 1fr; }
  .eng-split, .book { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .menu-toggle { display: inline-flex; }
  .nav {
    display: none; position: absolute; top: 100%; right: 0; left: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 0.5rem 1.25rem 1rem;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
  .nav-cta { text-align: center; margin-top: 0.5rem; }
  .room-rail { grid-template-columns: 1fr; }
  .hero__inner { margin-left: 1.25rem; }
}