/* ===========================================================================
   PHỐ BẢNG HIỆU — a wall of Vietnamese street-vendor signs that fills the
   whole screen. The board is a split tree: every sign is a flex item, every
   seam between two signs is a draggable gutter. Dragging a seam takes space
   from one sign and gives it to its neighbour, so the screen stays exactly
   full — no gaps, no scrolling, no dead space.
   ========================================================================= */

:root {
  --frame: #00505f;
  --frame-dark: #00323c;
  --paper: #f4f1e9;
  --red: #c51f29;
  --blue: #163fa5;
  --green: #008c61;
  --yellow: #f4d91f;
  --orange: #ef661c;
  --purple: #4b168b;
  --ink: #171717;
  --gut: 7px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--frame);
  color: var(--ink);
  font-family: "Be Vietnam Pro", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

button, select, input { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid #ff4e00; outline-offset: -3px; }

/* --- the wall ----------------------------------------------------------- */
.wall {
  position: fixed;
  inset: 0;
  display: flex;
  padding: var(--gut);
  background: var(--frame);
  touch-action: none;
}
.split { display: flex; flex: 1 1 0; min-width: 0; min-height: 0; }
.split.row { flex-direction: row; }
.split.col { flex-direction: column; }

/* --- seams -------------------------------------------------------------- */
.gutter {
  position: relative;
  z-index: 6;
  flex: 0 0 var(--gut);
  background: var(--frame);
  touch-action: none;
}
.row > .gutter { cursor: col-resize; }
.col > .gutter { cursor: row-resize; }
.gutter::before {                     /* fat invisible hit area */
  content: "";
  position: absolute;
  inset: -5px;
}
.gutter::after {                      /* grip mark, revealed on hover */
  content: "";
  position: absolute;
  background: var(--yellow);
  opacity: 0;
  transition: opacity .12s ease;
}
.row > .gutter::after { inset: calc(50% - 17px) 1px; }
.col > .gutter::after { inset: 1px calc(50% - 17px); }
.gutter:hover::after, .gutter.live::after { opacity: 1; }
body.dragging { user-select: none; }
body.dragging .sign { pointer-events: none; }

/* --- one sign ----------------------------------------------------------- */
.sign {
  --bg: #f4d91f;
  --cat: #008c61;
  --name: #c51f29;
  --tagline: #008c61;
  --footer-bg: #c51f29;
  --footer-color: #fff;
  --name-shadow: transparent;
  --outline: #fff;
  --mat: 0px;              /* photo mat, set per sign by the fitter */
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg);
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, .14);
}
.sign::after {                        /* vinyl / print texture */
  content: "";
  position: absolute;
  z-index: 3;
  inset: 0;
  pointer-events: none;
  opacity: .16;
  mix-blend-mode: multiply;
  background-image: repeating-linear-gradient(4deg, transparent 0 3px, rgba(0, 0, 0, .12) 4px);
}
.sign.is-selected { box-shadow: inset 0 0 0 4px #fff, inset 0 0 0 9px var(--frame-dark); }

.sign-body {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: max-content;
  text-align: center;
  pointer-events: auto;
}
.line {
  margin: 0;
  padding: 0 .02em;
  outline: 0;
  white-space: nowrap;
  transform-origin: center;
}
.line[hidden] { display: none; }
.cat { color: var(--cat); }
.name { color: var(--name); text-shadow: .055em .055em 0 var(--name-shadow); }
.tagline { color: var(--tagline); }
.sign.outline .name { -webkit-text-stroke: .028em var(--outline); }
.sign.gradient-name .name {
  color: transparent;
  background: var(--name-grad);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.footer-strip {
  position: absolute;
  z-index: 2;
  inset: auto 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 6px;
  color: var(--footer-color);
  background: var(--footer-bg);
}
.footer-strip .line { color: inherit; margin: 0; text-shadow: none; }

.badge {
  position: absolute;
  z-index: 4;
  top: 7px;
  left: 7px;
  display: grid;
  place-items: center;
  min-width: 22px;
  height: 19px;
  padding: 0 5px;
  color: var(--bg);
  background: var(--cat);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .06em;
}
.sign[data-level="0"] .badge,
.sign[data-level="1"] .badge,
.sign[data-level="2"] .badge { display: none; }

/* --- per-sign tools ----------------------------------------------------- */
.sign-tools {
  position: absolute;
  z-index: 5;
  top: 5px;
  right: 5px;
  display: flex;
  gap: 3px;
  opacity: 0;
  transition: opacity .12s ease;
}
.sign:hover .sign-tools,
.sign:focus-within .sign-tools,
.sign.is-selected .sign-tools { opacity: 1; }
.sign.is-tiny .sign-tools { display: none; }
.sign-tools button {
  display: grid;
  place-items: center;
  width: 23px;
  height: 23px;
  padding: 0;
  border: 0;
  cursor: pointer;
  color: #fff;
  background: rgba(0, 0, 0, .58);
  font-size: 11px;
  line-height: 1;
}
.sign-tools button:hover { background: var(--frame-dark); }
.sign-tools button[data-tool="adjust"]:hover { background: var(--yellow); color: var(--purple); }
.sign-tools button[data-tool="close"]:hover { background: var(--red); }

/* --- floating dock ------------------------------------------------------ */
.dock {
  position: fixed;
  z-index: 20;
  left: 14px;
  bottom: 14px;
  display: flex;
  align-items: stretch;
  gap: 7px;
  padding: 7px;
  background: var(--frame-dark);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, .3);
}
.dock-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  padding: 4px 12px 4px 8px;
  color: var(--paper);
}
.dock-brand b { font: 900 .82rem/1 "Alfa Slab One", Georgia, serif; letter-spacing: .02em; }
.dock-brand span { color: #8fc6cf; font-size: .54rem; font-weight: 700; letter-spacing: .07em; }
.dock-actions { display: flex; align-items: stretch; gap: 9px; }
/* buttons sit in labelled groups — content, layout, history, export, tools —
   divided by a hairline so the dock reads as sections, not one long row */
.dock-group { display: flex; gap: 3px; padding-right: 9px; border-right: 1px solid rgba(255, 255, 255, .22); }
.dock-group:last-child { padding-right: 0; border-right: 0; }
.dock button:disabled { opacity: .4; cursor: default; }
.dock button:disabled:hover { background: var(--paper); }
.dock button {
  min-height: 38px;
  padding: 0 11px;
  border: 0;
  cursor: pointer;
  color: var(--ink);
  background: var(--paper);
  font-size: .6rem;
  font-weight: 900;
  letter-spacing: .04em;
  white-space: nowrap;
}
.dock button i { font-style: normal; }
.dock button span { margin-left: 5px; }
.dock button:hover { background: var(--yellow); }
.dock button:disabled { cursor: not-allowed; filter: grayscale(1); opacity: .38; }
.dock button[data-act="shuffle"] { color: #fff; background: var(--red); }
.dock button[data-act="theme"] { font-variant-numeric: tabular-nums; letter-spacing: .06em; }
.dock button[data-act="shuffle"]:hover { background: #e5313c; }
.dock button[aria-pressed="true"] { color: #fff; background: var(--blue); }

.peek {
  position: fixed;
  z-index: 20;
  left: 14px;
  bottom: 14px;
  min-height: 34px;
  padding: 0 12px;
  border: 0;
  cursor: pointer;
  color: var(--paper);
  background: var(--frame-dark);
  font-size: .6rem;
  font-weight: 900;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .3);
}
body.chrome-off .dock, body.chrome-off .drawer { display: none; }
body:not(.chrome-off) .peek { display: none; }

/* --- font drawer -------------------------------------------------------- */
.drawer {
  position: fixed;
  z-index: 21;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 88vw);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  padding: 18px;
  color: #fff;
  background: var(--purple);
  box-shadow: -8px 0 0 rgba(0, 0, 0, .25);
}
.drawer[hidden] { display: none; }
.drawer h2 { margin: 0; font: 900 1.25rem/1 "Alfa Slab One", Georgia, serif; }
.drawer .eyebrow { margin: 0 0 4px; font-size: .58rem; font-weight: 800; letter-spacing: .16em; }
.drawer p { margin: 0; color: #e6d9f0; font-size: .6rem; line-height: 1.5; }
.drawer label { display: block; font-size: .55rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.drawer select {
  width: 100%;
  height: 34px;
  margin-top: 3px;
  padding: 0 6px;
  border: 2px solid #fff;
  border-radius: 0;
  color: var(--ink);
  background: #fff;
  font-size: .62rem;
  font-weight: 700;
}
.drawer-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 26px;
  height: 26px;
  border: 0;
  cursor: pointer;
  color: var(--purple);
  background: var(--yellow);
  font-weight: 900;
  z-index: 2;
}
.drawer-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  margin-top: 18px;
  margin-bottom: 2px;
}
.drawer-tab {
  min-height: 32px;
  border: 2px solid rgba(255, 255, 255, .4);
  cursor: pointer;
  color: #fff;
  background: transparent;
  font-size: .58rem;
  font-weight: 900;
  letter-spacing: .06em;
  transition: background .1s ease, color .1s ease, border-color .1s ease;
}
.drawer-tab:hover {
  border-color: #fff;
}
.drawer-tab.is-active {
  color: var(--purple);
  background: var(--yellow);
  border-color: var(--yellow);
}
.drawer-pane {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.drawer-pane[hidden] {
  display: none;
}
.face-grid { display: grid; gap: 8px; }
.drawer-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.drawer-actions button, .font-drop button {
  min-height: 36px;
  border: 2px solid #fff;
  cursor: pointer;
  color: #fff;
  background: transparent;
  font-size: .58rem;
  font-weight: 900;
}
.drawer-actions button:first-child { color: var(--purple); background: var(--yellow); border-color: var(--yellow); }
.font-status { padding-top: 10px; border-top: 1px solid rgba(255, 255, 255, .35); font-size: .58rem; line-height: 1.5; }
.font-drop { padding: 12px; border: 2px dashed rgba(255, 255, 255, .6); }
.font-drop.over { color: var(--purple); background: var(--yellow); border-style: solid; }
.font-drop button { width: 100%; margin-top: 8px; }
.drawer .hint { color: #c9b3e0; font-size: .56rem; font-style: italic; }

/* --- adjustment pane controls ------------------------------------------- */
.adj-controls {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.adj-controls.is-disabled {
  opacity: .4;
  pointer-events: none;
}
.adj-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-bottom: 9px;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}
.adj-group:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}
.adj-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
}
.adj-badge {
  display: inline-block;
  font-size: .56rem;
  font-weight: 900;
  color: var(--yellow);
  font-family: monospace, monospace;
  background: rgba(0, 0, 0, .35);
  padding: 1px 6px;
  letter-spacing: 0;
}
.adj-desc {
  margin: 0;
  color: #c9b3e0;
  font-size: .53rem;
  line-height: 1.35;
}
.adj-subrow {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sub-label {
  font-size: .52rem;
  opacity: .85;
}

/* Retro range slider */
.drawer input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  margin: 7px 0 3px;
  background: rgba(255, 255, 255, .32);
  border: 1px solid rgba(0, 0, 0, .4);
  border-radius: 0;
  outline: none;
  cursor: pointer;
}
.drawer input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 16px;
  background: var(--yellow);
  border: 2px solid #111;
  border-radius: 0;
  cursor: ew-resize;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, .4);
  transition: transform .08s ease, background .08s ease;
}
.drawer input[type="range"]::-webkit-slider-thumb:hover {
  background: #fff;
  transform: scale(1.1);
}
.drawer input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 16px;
  background: var(--yellow);
  border: 2px solid #111;
  border-radius: 0;
  cursor: ew-resize;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, .4);
  transition: transform .08s ease, background .08s ease;
}
.drawer input[type="range"]::-moz-range-thumb:hover {
  background: #fff;
  transform: scale(1.1);
}
.drawer input[type="range"]:focus-visible {
  outline: 2px solid var(--yellow);
}

/* ===========================================================================
   THEME · PHỐ HÔM NAY
   Printed vinyl, not paint. Every line carries a keyline — on a printed
   standee an outline costs nothing, so shops use it on all of them — and the
   shop name can sit in a solid banner across the board.
   ========================================================================= */
body[data-theme="nay"] .line {
  -webkit-text-stroke: var(--stroke-w, 0px) var(--stroke, transparent);
  paint-order: stroke fill;
}
body[data-theme="nay"] .name { text-shadow: none; }
body[data-theme="nay"] .sign.bannered .cat {
  padding: .1em .4em;
  color: var(--cat);
  background: var(--banner);
  -webkit-text-stroke: 0;
}
body[data-theme="nay"] .footer-strip .line { -webkit-text-stroke: 0; }

/* ===========================================================================
   THEME · SÀI GÒN 1985
   The wall becomes the painted green board of the reference sheet, and each
   sign is presented the way those signs survive: as a photograph, white-matted,
   hairline-keyed and pinned up with a little shadow under it. --mat is set per
   sign in JS (it scales with the cell) and the type fitter is told about it, so
   nothing ever runs under the mat.
   ========================================================================= */
body[data-theme="sg85"] {
  --frame: #1d5c4f;
  --frame-dark: #14413a;
  --gold: #e9c96a;
  --board-ink: #f2ead5;
}

body[data-theme="sg85"] .wall {
  background:
    radial-gradient(132% 104% at 50% 42%, transparent 38%, rgba(0, 0, 0, .38) 100%),
    repeating-linear-gradient(64deg, transparent 0 37px, rgba(255, 255, 255, .04) 37px 38px),
    repeating-linear-gradient(-51deg, transparent 0 53px, rgba(0, 0, 0, .05) 53px 54px),
    repeating-linear-gradient(11deg, transparent 0 97px, rgba(255, 255, 255, .03) 97px 99px),
    var(--frame);
}
body[data-theme="sg85"] .wall::before,
body[data-theme="sg85"] .wall::after {   /* the poster's double gold rule */
  content: "";
  position: absolute;
  z-index: 9;
  pointer-events: none;
}
body[data-theme="sg85"] .wall::before { inset: 3px; border: 1.5px solid rgba(233, 201, 106, .8); }
body[data-theme="sg85"] .wall::after  { inset: 8px; border: 1px dashed rgba(233, 201, 106, .42); }

body[data-theme="sg85"] .sign {
  box-shadow:
    inset 0 0 0 var(--mat) #f4efe2,
    inset 0 0 0 calc(var(--mat) + 1.5px) rgba(18, 28, 26, .5),
    0 3px 7px rgba(0, 0, 0, .34);
}
body[data-theme="sg85"] .sign.is-selected {
  box-shadow:
    inset 0 0 0 var(--mat) var(--gold),
    inset 0 0 0 calc(var(--mat) + 2px) rgba(18, 28, 26, .6),
    0 3px 7px rgba(0, 0, 0, .34);
}
/* The hero word: painted fill, keyline drawn *outside* it (paint-order puts the
   stroke behind the fill so the letter keeps its weight), and the hard slab
   behind both — set as a stepped text-shadow in JS, scaled to the type. */
body[data-theme="sg85"] .line.is-hero {
  -webkit-text-stroke: var(--stroke-w, 0px) var(--stroke, transparent);
  paint-order: stroke fill;
}
body[data-theme="sg85"] .name { text-shadow: none; }

body[data-theme="sg85"] .sign::after {   /* age, not gloss */
  opacity: .2;
  background-image:
    repeating-linear-gradient(97deg, transparent 0 2px, rgba(0, 0, 0, .1) 3px),
    radial-gradient(78% 62% at 28% 18%, rgba(255, 244, 214, .3), transparent 72%);
}
/* the painted keyline inside the panel — HIỀN KHÁNH's red rule, CỬA HÀNG 99's
   border. Only on signs big enough to carry all four lines, where the fitter's
   padding guarantees clearance. */
body[data-theme="sg85"] .sign.ruled[data-level="3"]::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: calc(var(--mat) + 4px) calc(var(--mat) + 4px) calc(var(--mat) + var(--footer-h, 0px) + 4px);
  border: 2px solid var(--rule);
  opacity: .85;
  pointer-events: none;
}
body[data-theme="sg85"] .footer-strip { inset: auto var(--mat) var(--mat); }
body[data-theme="sg85"] .badge {
  top: calc(var(--mat) + 5px);
  left: calc(var(--mat) + 5px);
  letter-spacing: .1em;
}
body[data-theme="sg85"] .sign-tools { top: calc(var(--mat) + 4px); right: calc(var(--mat) + 4px); }

body[data-theme="sg85"] .dock {
  background: var(--frame-dark);
  box-shadow: 0 0 0 1px rgba(233, 201, 106, .45), 5px 5px 0 rgba(0, 0, 0, .35);
}
body[data-theme="sg85"] .dock-brand b {
  color: var(--gold);
  font: 400 1.65rem/1 "SG85 Sàigòn 1985", "Alfa Slab One", Georgia, serif;
  letter-spacing: 0;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, .45);
}
body[data-theme="sg85"] .dock-brand span { color: #8fc0a8; }
body[data-theme="sg85"] .dock button { color: #17453b; background: var(--board-ink); }
body[data-theme="sg85"] .dock-group { border-right-color: rgba(233, 201, 106, .45); }
body[data-theme="sg85"] .dock button:disabled:hover { background: var(--board-ink); }
body[data-theme="sg85"] .dock button:hover { background: var(--gold); }
body[data-theme="sg85"] .dock button[data-act="shuffle"] { color: #f7f1e3; background: #b8352a; }
body[data-theme="sg85"] .dock button[data-act="shuffle"]:hover { background: #cd3f31; }
body[data-theme="sg85"] .dock button[aria-pressed="true"] { color: #17453b; background: var(--gold); }
body[data-theme="sg85"] .peek { color: var(--gold); background: var(--frame-dark); }
body[data-theme="sg85"] .toast { background: var(--frame-dark); box-shadow: 0 0 0 1px rgba(233, 201, 106, .4), 4px 4px 0 rgba(0, 0, 0, .3); }
body[data-theme="sg85"] .drawer { background: var(--frame-dark); box-shadow: -8px 0 0 rgba(0, 0, 0, .3); }
body[data-theme="sg85"] .drawer h2 { color: var(--gold); }
body[data-theme="sg85"] .drawer p { color: #cfe0d5; }
body[data-theme="sg85"] .drawer .hint { color: #9fc9b3; }
body[data-theme="sg85"] .drawer-actions button:first-child { color: #17453b; background: var(--gold); border-color: var(--gold); }
body[data-theme="sg85"] .drawer-close { color: #17453b; background: var(--gold); }

/* --- toast -------------------------------------------------------------- */
.toast {
  position: fixed;
  z-index: 30;
  right: 16px;
  bottom: 16px;
  max-width: 320px;
  padding: 11px 15px;
  color: #fff;
  background: var(--frame-dark);
  font-size: .66rem;
  font-weight: 800;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .3);
  opacity: 0;
  transform: translateY(130%);
  transition: .18s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* On a phone the dock is a lodger on someone else's wall: icons only, and the
   groups wrap rather than squeezing ten buttons onto one line. */
@media (max-width: 620px) {
  :root { --gut: 6px; }
  .dock { right: 8px; left: 8px; bottom: 8px; padding: 5px; gap: 4px; }
  .dock-brand { display: none; }
  .dock-actions { width: 100%; flex-wrap: wrap; gap: 5px; }
  .dock-group { flex: 1 1 auto; padding-right: 5px; }
  .dock button { min-width: 0; min-height: 40px; flex: 1 1 0; padding: 0; font-size: .84rem; }
  .dock button span { display: none; }
  .peek { left: 8px; bottom: 8px; }
  .toast { left: 8px; right: 8px; bottom: 60px; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .001ms !important; }
}

/* ── Giới thiệu & bản quyền ─────────────────────────────────────────
   Cùng bảng màu với drawer: nền tím, chữ trắng, nút vàng. */
.about {
  width: min(420px, 90vw);
  padding: 22px;
  border: 0;
  color: #fff;
  background: var(--purple);
  box-shadow: 0 10px 0 rgba(0, 0, 0, .25);
}
.about::backdrop { background: rgba(0, 0, 0, .55); }
.about .eyebrow { margin: 0 0 4px; font-size: .58rem; font-weight: 800; letter-spacing: .16em; }
.about h2 { margin: 0 0 14px; font: 900 1.25rem/1 "Alfa Slab One", Georgia, serif; }
.about dl { margin: 0; }
.about dt {
  font-size: .55rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-top: 12px;
}
.about dt:first-child { margin-top: 0; }
.about dd { margin: 3px 0 0; font-size: .68rem; line-height: 1.55; color: #e6d9f0; }
.about a { color: #fff; text-decoration: underline; text-underline-offset: 2px; }
.about-note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 2px solid rgba(255, 255, 255, .25);
  font-size: .56rem;
  line-height: 1.5;
  color: #cbb8d8;
}
.about-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 26px;
  height: 26px;
  border: 0;
  cursor: pointer;
  color: var(--purple);
  background: var(--yellow);
  font-weight: 900;
}