/* WORKSPACE LAB — ธีมคริสต์มาส: คืนป่าสน ป้ายของขวัญกระดาษ ลูกเบอร์รี และทองเหลือง */
:root {
  --night: #12302f;
  --night-deep: #0a2221;
  --paper: #f5eddc;
  --paper-dim: #e6dcc6;
  --ink: #1c2b29;
  --ink-soft: #55635f;
  --berry: #b4232f;
  --berry-dark: #8c1822;
  --brass: #d8a23e;
  --frost: #d3e6e1;
  --pine: #2f7a59;
  --twine: #b8935a;

  --font-display: "Trirong", "Noto Serif Thai", serif;
  --font-body: "Anuphan", "Noto Sans Thai", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Courier New", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--frost);
  background:
    radial-gradient(120% 80% at 50% 0%, #1b4543 0%, var(--night) 45%, var(--night-deep) 100%) fixed;
}

h1, h2 { font-family: var(--font-display); font-weight: 700; line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2vw, 2.6rem); }
h2 { font-size: 1.3rem; margin-top: 1.8em; }
p { margin: 0 0 1em; }
a { color: inherit; text-underline-offset: .2em; }
code { font-family: var(--font-mono); font-size: .9em; }

:focus-visible { outline: 3px solid var(--brass); outline-offset: 3px; }

.sr {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

#snow { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
.top, main { position: relative; z-index: 1; }

/* ---------- แถบบน ---------- */
.top {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: .5rem 2rem;
  padding: 1.1rem clamp(1rem, 4vw, 3rem);
}
.wordmark {
  font-family: var(--font-display); font-weight: 700; font-size: 1.35rem;
  letter-spacing: .06em; text-decoration: none; color: var(--paper);
}
.top-nav { display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem 1.4rem; }
.top-nav a, .linklike {
  color: var(--frost); text-decoration: none; padding: .3rem 0;
  border-bottom: 2px solid transparent;
}
.top-nav a:hover, .linklike:hover { border-bottom-color: var(--twine); }
.top-nav a[aria-current="page"] { color: var(--paper); border-bottom-color: var(--brass); }
.inline { display: inline; margin: 0; }
.linklike { background: none; border-width: 0 0 2px; font: inherit; cursor: pointer; }

/* ---------- ปุ่ม ---------- */
.btn {
  display: inline-block; padding: .6rem 1.25rem;
  font: 600 1rem/1.3 var(--font-body);
  color: inherit; background: transparent;
  border: 2px solid currentColor; border-radius: 999px;
  text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-berry { background: var(--berry); border-color: var(--berry); color: var(--paper); }
.btn-berry:hover { background: var(--berry-dark); border-color: var(--berry-dark); }
.btn-ghost { color: var(--frost); }
.btn-ghost:hover { background: var(--frost); color: var(--night-deep); border-color: var(--frost); }
.btn-small { padding: .3rem .8rem; font-size: .85rem; border-width: 1.5px; }
.btn-danger { color: var(--berry); }
.btn-danger:hover { background: var(--berry); border-color: var(--berry); color: var(--paper); }

/* ---------- ข้อความแจ้ง ---------- */
.flash {
  max-width: 44rem; margin: 0 auto 1.2rem; padding: .7rem 1.1rem;
  border-radius: 8px; border-left: 6px solid var(--pine);
  background: var(--paper); color: var(--ink);
}
.flash-err { border-left-color: var(--berry); }
main > .flash { margin-inline: auto; width: calc(100% - 2rem); }

/* ---------- หน้าเปิดตัว ---------- */
.landing main { padding: 0; }
.stage {
  min-height: 100dvh;
  display: grid; place-content: center; justify-items: center;
  gap: 1.2rem; padding: 2rem 1rem 6rem; text-align: center;
}
.tree {
  margin: 0; cursor: pointer; user-select: none; text-align: left; white-space: pre;
  font: 600 clamp(10px, 2.7vw, 17px)/1.18 var(--font-mono);
  color: var(--pine);
}
.tree .row { display: block; opacity: 0; animation: row-in .45s ease-out forwards; animation-delay: calc(var(--d) * 1ms); }
.tree span > span { transition: color .5s ease, text-shadow .5s ease; }
.tree .l1 { color: #3f9a72; }
.tree .l2 { color: #2f7a59; }
.tree .l3 { color: #63b98f; }
.tree .or { animation: twinkle var(--t, 2.4s) ease-in-out var(--o, 0s) infinite alternate; }
.tree .c1 { color: #e2414f; }
.tree .c2 { color: var(--brass); }
.tree .c3 { color: var(--frost); }
.tree .c4 { color: #f08a5d; }
.tree .st { color: var(--brass); animation: star 2.2s ease-in-out infinite alternate; }
.tree .tk { color: #9a6b3f; }
.tree .pt { color: var(--berry); }
.tree .sn { color: var(--frost); opacity: .7; }
.tree .lit { color: var(--paper) !important; text-shadow: 0 0 .6em var(--brass), 0 0 1.4em var(--brass); transition-duration: .05s; }
.tree.shake { animation: shake .6s ease-in-out; }

.stage-copy { opacity: 0; animation: rise .8s ease-out 2.1s forwards; }
.stage-title {
  font-size: clamp(1.5rem, 7.6vw, 4.6rem);
  letter-spacing: .08em; color: var(--paper); margin-bottom: .2em;
}
.stage-sub { font-size: 1.15rem; }
.stage-actions { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: center; margin: 1.4rem 0 1rem; }
.stage-hint { font-size: .9rem; color: #9fbdb7; max-width: 30rem; margin-inline: auto; }

@keyframes row-in  { from { opacity: 0; transform: translateY(.6em); } to { opacity: 1; transform: none; } }
@keyframes rise    { from { opacity: 0; transform: translateY(1rem); } to { opacity: 1; transform: none; } }
@keyframes twinkle { from { opacity: .35; } to { opacity: 1; text-shadow: 0 0 .7em currentColor; } }
@keyframes star    { from { text-shadow: 0 0 .3em var(--brass); } to { text-shadow: 0 0 .9em var(--brass), 0 0 2em #fff3; } }
@keyframes shake   { 20% { transform: rotate(-2.5deg); } 45% { transform: rotate(2deg); } 70% { transform: rotate(-1deg); } }

/* ---------- หน้าจัดแสดง ---------- */
.gallery-head { padding: 1.5rem clamp(1rem, 4vw, 3rem) .5rem; max-width: 62rem; }
.gallery-head h1 { color: var(--paper); }
.search { display: flex; gap: .6rem; flex-wrap: wrap; }
.search input[type="search"] {
  flex: 1 1 16rem; min-width: 0;
  padding: .65rem 1.1rem; font: inherit;
  color: var(--ink); background: var(--paper);
  border: 2px solid transparent; border-radius: 999px;
}
.search input[type="search"]:focus-visible { outline-offset: 2px; }
.filters { display: flex; flex-wrap: wrap; gap: .4rem; margin: 1rem 0 .6rem; }
.filters a {
  padding: .25rem .9rem; border-radius: 999px; text-decoration: none;
  border: 1.5px solid #4f7773; color: var(--frost); font-size: .95rem;
}
.filters a:hover { border-color: var(--frost); }
.filters a[aria-current="true"] { background: var(--brass); border-color: var(--brass); color: var(--night-deep); font-weight: 600; }
.result-count { color: #9fbdb7; font-size: .95rem; }

.empty { text-align: center; padding: 4rem 1rem; }
.empty p { font-size: 1.15rem; }

/* ป้ายของขวัญแขวนบนเชือก */
.line {
  list-style: none; margin: 1rem 0 0;
  padding: 0 clamp(1.4rem, 4vw, 3rem) 7rem;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  gap: 2.6rem 1.75rem;
}
.hang { position: relative; padding-top: 2.5rem; filter: drop-shadow(0 12px 14px rgba(3, 18, 17, .5)); }
.hang::before {
  content: ""; position: absolute; top: .5rem; left: -.875rem; right: -.875rem; height: 3px;
  background: repeating-linear-gradient(100deg, var(--twine) 0 5px, #8f6f3f 5px 9px);
  border-radius: 2px;
}
.swinger { position: relative; transform: rotate(var(--tilt)); transform-origin: 50% -2rem; }
.swinger.swing { animation: swing 1.2s ease-out; }
.thread {
  position: absolute; z-index: 1; top: -2rem; left: 50%; margin-left: -1px;
  width: 2px; height: 3.1rem; background: var(--twine);
}
.tag {
  position: relative; display: flex; flex-direction: column; gap: .15rem;
  width: 100%; padding: 2.6rem 1rem .9rem;
  font: inherit; text-align: left; color: var(--ink);
  background: var(--paper);
  border: 0; cursor: pointer;
  clip-path: polygon(1.7rem 0, calc(100% - 1.7rem) 0, 100% 1.7rem, 100% 100%, 0 100%, 0 1.7rem);
}
.tag::before {
  content: ""; position: absolute; top: .8rem; left: 50%; translate: -50% 0;
  width: .85rem; height: .85rem; border-radius: 50%;
  background: var(--night); box-shadow: 0 0 0 3px var(--brass);
}
.tag:focus-visible { outline-offset: -7px; outline-color: var(--berry); }
@keyframes swing {
  18% { transform: rotate(calc(var(--tilt) + 5deg)); }
  42% { transform: rotate(calc(var(--tilt) - 3.5deg)); }
  66% { transform: rotate(calc(var(--tilt) + 1.8deg)); }
  85% { transform: rotate(calc(var(--tilt) - .6deg)); }
}

.tag-media {
  display: grid; place-items: center; aspect-ratio: 4 / 3; overflow: hidden;
  border-radius: 3px; margin-bottom: .6rem; background: var(--paper-dim);
}
.tag-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tag-media-pdf, .tag-media-file { background: var(--berry); color: var(--paper); }
.tag-media-video { background: var(--night); color: var(--brass); }
.tag-media-link { background: var(--pine); color: var(--paper); }
.tag-glyph {
  font: 700 clamp(1.3rem, 1rem + 1.2vw, 2rem)/1.15 var(--font-display);
  padding: .5rem; text-align: center; overflow-wrap: anywhere;
}
.tag-title { font: 700 1.15rem/1.35 var(--font-display); overflow-wrap: anywhere; }
.tag-by { font-weight: 500; }
.tag-dept { font-size: .9rem; color: var(--ink-soft); }
.tag-foot {
  display: flex; justify-content: space-between; gap: .5rem;
  margin-top: .5rem; padding-top: .5rem; border-top: 1px dashed #b9ad93;
  font-size: .8rem; color: var(--ink-soft);
}

.pager { display: flex; justify-content: center; align-items: center; gap: 1rem; padding: 0 1rem 7rem; margin-top: -4.5rem; }
.sheet .pager { padding: 1.2rem 0 0; margin: 0; }

/* หน้าต่างดูผลงาน */
.viewer {
  width: min(62rem, 94vw); max-height: 90dvh; padding: 0;
  border: 0; border-radius: 10px; overflow: auto;
  background: var(--paper); color: var(--ink);
}
.viewer[open] { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); animation: pop .25s ease-out; }
.viewer::backdrop { background: rgba(5, 22, 21, .82); }
@keyframes pop { from { opacity: 0; transform: scale(.96) translateY(10px); } }
.viewer > form { position: absolute; top: .7rem; right: .7rem; z-index: 2; margin: 0; }
.viewer-close {
  padding: .3rem .9rem; font: 600 .9rem var(--font-body);
  color: var(--paper); background: var(--ink); border: 0; border-radius: 999px; cursor: pointer;
}
.viewer-media { display: grid; place-items: center; min-height: 18rem; background: var(--night-deep); color: var(--paper); }
.viewer-media img, .viewer-media video { max-width: 100%; max-height: 80dvh; display: block; }
.viewer-media iframe { width: 100%; height: min(80dvh, 44rem); border: 0; background: #fff; }
.viewer-media .tag-glyph { font-size: clamp(2rem, 1rem + 4vw, 3.6rem); }
.viewer-info { padding: 3rem 1.6rem 1.6rem; }
.viewer-info h2 { margin-top: 0; font-size: 1.6rem; }
.viewer-by { font-weight: 500; }
.viewer-desc { white-space: pre-line; overflow-wrap: anywhere; }
.viewer-meta { font-size: .88rem; color: var(--ink-soft); }
@media (max-width: 46rem) {
  .viewer[open] { grid-template-columns: 1fr; }
  .viewer-info { padding-top: 1.4rem; }
}

/* ---------- แผ่นกระดาษ (ฟอร์ม/ผู้ดูแล) ---------- */
.sheet {
  width: min(44rem, calc(100% - 2rem)); margin: 1.5rem auto 7rem;
  padding: clamp(1.4rem, 4vw, 2.6rem);
  background: var(--paper); color: var(--ink); color-scheme: light;
  border-radius: 10px; box-shadow: 0 18px 30px rgba(3, 18, 17, .45);
}
.sheet.narrow { width: min(30rem, calc(100% - 2rem)); }
.sheet.wide { width: min(72rem, calc(100% - 2rem)); }
.sheet a:not(.btn) { color: var(--berry-dark); }
.lede { color: var(--ink-soft); }

.form { display: grid; gap: 1.1rem; margin-bottom: 1.2rem; }
.form > .btn { justify-self: start; }
.form label { display: grid; gap: .3rem; font-weight: 500; }
.form input:not([type="radio"], [type="checkbox"], [type="file"]), .form textarea {
  width: 100%; padding: .6rem .8rem; font: inherit; color: var(--ink);
  background: #fffaf0; border: 1.5px solid #b9ad93; border-radius: 6px;
}
.form input:focus-visible, .form textarea:focus-visible { outline-color: var(--berry); border-color: var(--berry); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 30rem) { .row { grid-template-columns: 1fr; } }
.trap { position: absolute; left: -9999px; }

.seg { border: 0; padding: 0; margin: 0; display: flex; gap: .5rem; flex-wrap: wrap; }
.seg legend { font-weight: 500; margin-bottom: .4rem; padding: 0; }
.seg label { display: block; cursor: pointer; }
.seg input { position: absolute; opacity: 0; }
.seg span { display: block; padding: .5rem 1.2rem; border: 1.5px solid var(--ink); border-radius: 999px; }
.seg input:checked + span { background: var(--ink); color: var(--paper); }
.seg input:focus-visible + span { outline: 3px solid var(--berry); outline-offset: 2px; }

.drop {
  position: relative; justify-items: center; text-align: center; cursor: pointer;
  padding: 2rem 1rem; border: 2px dashed #a3967b; border-radius: 10px; background: #fffaf0;
  transition: border-color .15s, background-color .15s;
}
.drop.over { border-color: var(--berry); background: #fbe9e3; }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop:has(input:focus-visible) { outline: 3px solid var(--berry); outline-offset: 2px; }
.drop-note { font-size: .85rem; font-weight: 400; color: var(--ink-soft); }
.drop img { max-height: 11rem; max-width: 100%; border-radius: 6px; margin-top: .6rem; }

.checks { list-style: none; padding: 0; }
.checks li { padding-left: 1.6rem; position: relative; }
.checks li::before { position: absolute; left: 0; font-weight: 700; }
.checks .pass::before { content: "✓"; color: var(--pine); }
.checks .fail::before { content: "✕"; color: var(--berry); }
.checks .fail { color: var(--berry-dark); }

/* สวิตช์การตั้งค่า */
.switches { gap: .7rem; }
.form .switch { display: flex; align-items: center; gap: .8rem; cursor: pointer; font-weight: 400; }
.switch input {
  appearance: none; flex: none; width: 2.9rem; height: 1.6rem; margin: 0;
  background: #b9ad93; border-radius: 999px; position: relative; cursor: pointer;
  transition: background-color .2s;
}
.switch input::after {
  content: ""; position: absolute; top: .2rem; left: .2rem; width: 1.2rem; height: 1.2rem;
  background: #fff; border-radius: 50%; transition: translate .2s;
}
.switch input:checked { background: var(--pine); }
.switch input:checked::after { translate: 1.3rem 0; }
.switch input:focus-visible { outline: 3px solid var(--berry); outline-offset: 2px; }

.search-inline { margin-bottom: 1rem; }
.search-inline input[type="search"] { background: #fffaf0; border-color: #b9ad93; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.table th { text-align: left; font-weight: 600; white-space: nowrap; }
.table th, .table td { padding: .7rem .6rem; border-bottom: 1px solid #d5c9af; vertical-align: top; }
.table small { display: block; color: var(--ink-soft); }
.table tr.is-off td:first-child { opacity: .6; }
.table form { margin: 0; }
.actions { display: flex; flex-wrap: wrap; gap: .35rem; min-width: 15rem; }
.pill { display: inline-block; padding: 0 .55rem; border-radius: 999px; font-size: .78rem; font-weight: 600; white-space: nowrap; }
.pill-on { background: #d6ead9; color: #1e5a3d; }
.pill-off { background: #f3d6d3; color: var(--berry-dark); }

/* ---------- เครื่องเล่นแผ่นเสียง ---------- */
#vinyl { position: fixed; right: 1rem; bottom: 1rem; z-index: 40; font-size: .9rem; }
.vinyl-toggle {
  width: 4rem; height: 4rem; padding: 0; border: 3px solid var(--brass); border-radius: 50%;
  cursor: pointer; display: block; margin-left: auto;
  box-shadow: 0 8px 18px rgba(3, 18, 17, .6);
}
.record {
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--paper) 0 4%, var(--berry) 4.5% 30%, var(--brass) 30.5% 32.5%, transparent 33%),
    conic-gradient(from 20deg, #fff0 0 10%, #ffffff26 16%, #fff0 24% 58%, #ffffff1f 66%, #fff0 74%),
    repeating-radial-gradient(circle, #161616 0 2px, #262626 2px 3px);
  animation: spin 2.4s linear infinite; animation-play-state: paused;
}
.is-playing .record { animation-play-state: running; }
@keyframes spin { to { transform: rotate(360deg); } }

.vinyl-panel {
  width: 17rem; margin-bottom: .7rem; padding: 1rem;
  color: var(--paper);
  background: linear-gradient(160deg, #5a3620, #3b2214);
  border: 2px solid #2a170c; border-radius: 12px;
  box-shadow: 0 16px 30px rgba(3, 18, 17, .65);
}
.vinyl-panel[hidden] { display: none; }
.deck { position: relative; height: 11.5rem; margin-bottom: .7rem; }
.deck .record { position: absolute; left: 0; top: .25rem; width: 11rem; height: 11rem; }
.arm {
  position: absolute; right: 1.1rem; top: .3rem; width: .35rem; height: 7.6rem;
  background: linear-gradient(#e8e2d4, #a59f92); border-radius: 3px;
  transform-origin: 50% .5rem; transform: rotate(-6deg);
  transition: transform .7s cubic-bezier(.4, 0, .2, 1);
}
.arm::before { content: ""; position: absolute; top: -.35rem; left: -.55rem; width: 1.45rem; height: 1.45rem; border-radius: 50%; background: var(--brass); box-shadow: inset 0 0 0 .3rem #8a6420; }
.arm::after { content: ""; position: absolute; bottom: -.3rem; left: -.3rem; width: .95rem; height: 1.5rem; border-radius: 2px; background: #1b1b1b; }
.is-playing .arm { transform: rotate(27deg); }
.vinyl-track { font: 700 1rem/1.3 var(--font-display); margin: 0 0 .1rem; }
.vinyl-note { margin: 0 0 .6rem; font-size: .8rem; color: #d9c4a6; }
.vinyl-controls { display: flex; gap: .4rem; align-items: center; }
.vinyl-controls button {
  flex: 1; padding: .45rem .3rem; font: 600 .82rem var(--font-body); white-space: nowrap;
  color: var(--paper); background: #2a170c; border: 1.5px solid #7a5334; border-radius: 6px; cursor: pointer;
}
.vinyl-controls button:hover { border-color: var(--brass); }
.vinyl-controls .play { flex: 1.6; background: var(--berry); border-color: var(--berry); }
.vinyl-vol { display: flex; align-items: center; gap: .6rem; margin-top: .7rem; font-size: .8rem; }
.vinyl-vol input { flex: 1; accent-color: var(--brass); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .tree .row, .stage-copy { opacity: 1; animation: none; }
  #snow { display: none; }
}