:root {
  --bg: #f4f6fa;
  --card: #ffffff;
  --ink: #1b2437;
  --muted: #6b7690;
  --line: #e3e8f1;
  --brand: #022363;      /* น้ำเงินจากโลโก้ */
  --brand-ink: #ffffff;
  --brand-soft: #dde6fb;
  --accent: #c5152d;     /* แดงจากโลโก้ */
  --navy: #022363;
  --danger: #c0392b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20,33,61,.06), 0 6px 20px rgba(20,33,61,.06);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.5 "Noto Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1, h2 { margin: 0; }

.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 24px; background: #fff; color: var(--ink);
  border-bottom: 3px solid var(--accent); box-shadow: var(--shadow);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand h1 { font-size: 18px; letter-spacing: .2px; color: var(--brand); }
.brand p { margin: 0; font-size: 12px; color: var(--muted); }
.top-actions { display: flex; gap: 8px; }

/* ---------- โลโก้ในแถบบน ---------- */
.logo-mark { display: flex; width: 64px; cursor: pointer; perspective: 600px; }
.logo-mark img { width: 50%; height: auto; display: block; }
.logo-mark .lm-left { transform-origin: right center; }
.logo-mark .lm-right { transform-origin: left center; }
body.ready .logo-mark .lm-left { animation: pageL .9s cubic-bezier(.2,.8,.2,1) both; }
body.ready .logo-mark .lm-right { animation: pageR .9s cubic-bezier(.2,.8,.2,1) both; }
.brand:hover .logo-mark { animation: wiggle .7s ease; }

/* ---------- Splash ---------- */
.splash {
  position: fixed; inset: 0; z-index: 200; background: #fff;
  display: grid; place-items: center; cursor: pointer;
  transition: opacity .6s ease, visibility .6s ease;
}
.splash.hide { opacity: 0; visibility: hidden; pointer-events: none; }
.splash-logo { display: flex; flex-direction: column; align-items: center; width: min(78vw, 400px); }
.splash .book {
  position: relative; display: flex; width: 100%; perspective: 1000px;
  animation: bob 3.2s ease-in-out 1.4s infinite;
}
.splash .pg { width: 50%; height: auto; display: block; }
.splash .pg.l { transform-origin: right center; animation: pageL 1.1s cubic-bezier(.2,.8,.2,1) .15s both; }
.splash .pg.r { transform-origin: left center;  animation: pageR 1.1s cubic-bezier(.2,.8,.2,1) .15s both; }
.splash .shine {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,.85) 50%, transparent 60%);
  background-size: 250% 100%; background-position: 120% 0;
  mix-blend-mode: soft-light;
  animation: shine 1.1s ease-in-out 1.5s both;
}
.splash .word { width: 100%; height: auto; margin-top: 14px; animation: fadeUp .8s ease 1s both; }
.splash .tag {
  margin: 10px 0 0; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted);
  animation: fadeUp .8s ease 1.4s both;
}

@keyframes pageL { from { opacity: 0; transform: rotateY(80deg) scale(.9); } to { opacity: 1; transform: none; } }
@keyframes pageR { from { opacity: 0; transform: rotateY(-80deg) scale(.9); } to { opacity: 1; transform: none; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes shine { from { background-position: 120% 0; } to { background-position: -40% 0; } }
@keyframes wiggle { 0%, 100% { transform: rotate(0); } 25% { transform: rotate(-6deg) scale(1.06); } 60% { transform: rotate(5deg) scale(1.06); } }

@media (prefers-reduced-motion: reduce) {
  .splash { display: none; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.wrap { max-width: 1200px; margin: 0 auto; padding: 20px 16px 60px; display: grid; gap: 16px; }

.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.stat {
  background: var(--card); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow);
  border-left: 4px solid var(--brand);
}
.stat span { display: block; font-size: 12px; color: var(--muted); }
.stat b { font-size: 26px; }

.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); }
.filters { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr auto; gap: 8px; padding: 12px; }

input, select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; color: inherit; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-soft); border-color: var(--brand); }

.btn {
  border: 0; border-radius: 10px; padding: 9px 16px; font: inherit; font-weight: 600; cursor: pointer;
}
.btn.primary { background: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: #eef1f7; color: var(--ink); }
.topbar .btn.ghost:hover { background: #e2e7f2; }
.btn.danger { background: #fdeceb; color: var(--danger); }

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted);
  padding: 12px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: #f8fafd; }
td small { color: var(--muted); display: block; }
.date-cell b { display: block; }

.pill { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.pill.group { background: #e6efff; color: #2547a8; }
.pill.private { background: #f3e8ff; color: #6b2fb3; }
.pill.Beginner { background: #e7f7ea; color: #1f7a38; }
.pill.Intermediate { background: #fff4de; color: #9a6300; }
.pill.Advanced { background: #fde7e7; color: #a32020; }
.pill.confirmed { background: var(--brand-soft); color: var(--brand); }
.pill.pending { background: #fff4de; color: #9a6300; }
.pill.completed { background: #eceff4; color: #4a5468; }
.pill.cancelled { background: #fdeceb; color: var(--danger); }

.empty { padding: 40px; text-align: center; color: var(--muted); }
.muted { color: var(--muted); }

/* dialogs */
dialog { border: 0; border-radius: 18px; padding: 0; width: min(640px, 94vw); box-shadow: 0 20px 60px rgba(0,0,0,.3); }
dialog::backdrop { background: rgba(20,33,61,.55); backdrop-filter: blur(2px); }
dialog form { padding: 20px 22px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-head h2, #pinDialog h2 { font-size: 20px; }
.x { border: 0; background: #eef1f7; width: 32px; height: 32px; border-radius: 50%; cursor: pointer; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid label, fieldset { font-size: 13px; font-weight: 600; color: var(--muted); }
.grid label input, .grid label select, .grid label textarea { margin-top: 4px; font-weight: 400; color: var(--ink); }
.span2 { grid-column: span 2; }
fieldset { border: 0; padding: 0; margin: 0; }
legend { padding: 0; margin-bottom: 4px; }
small { font-weight: 400; }

.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg label { margin: 0; flex: 1; }
.seg input { position: absolute; opacity: 0; width: 0; }
.seg span {
  display: block; text-align: center; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer; font-weight: 600; color: var(--ink); background: #fff;
}
.seg input:checked + span { background: var(--brand); color: #fff; border-color: var(--brand); }
.seg input:focus-visible + span { outline: 2px solid var(--brand-soft); }

.modal-foot { display: flex; gap: 8px; align-items: center; margin-top: 16px; }
.spacer { flex: 1; }
.error { color: var(--danger); font-size: 13px; margin: 10px 0 0; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--navy); color: #fff; padding: 11px 20px; border-radius: 99px; box-shadow: var(--shadow); z-index: 99;
}

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
  .filters { grid-template-columns: 1fr 1fr; }
  .filters input[type=search] { grid-column: span 2; }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
  .span2 { grid-column: span 1; }
  .stats { grid-template-columns: 1fr 1fr; }
  .topbar { padding: 12px 14px; }
}