/* ==========================================================================
   app.css — ต้นแบบ Room Scan (mobile-first)
   ใช้ design tokens ชุดเดียวกับโปรเจค AR เดิม (css/base.css) เพื่อให้หน้าตาไปทางเดียวกัน
   ========================================================================== */

:root {
  color-scheme: dark;
  --bg: #080b14;
  --bg-elev: #10162a;
  --bg-elev-2: #1a2340;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #eef1fb;
  --text-muted: #9aa4c4;
  --text-faint: #6b7595;
  --accent: #5b8cff;
  --accent-hover: #7aa2ff;
  --accent-ink: #06102b;
  --ok: #3ddc97;
  --warn: #ffc857;
  --danger: #ff6b6b;
  --door: #f08a4b;
  --window: #4fc3f7;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-pill: 999px;
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --font: 'IBM Plex Sans Thai', 'Noto Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
}

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

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--accent-hover);
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin: 0 0 var(--sp-3);
}

p {
  margin: 0 0 var(--sp-3);
}

small,
.muted {
  color: var(--text-muted);
}

.faint {
  color: var(--text-faint);
}

[hidden] {
  display: none !important;
}

/* ---- ปุ่ม ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 44px; /* ขนาดแตะขั้นต่ำ */
  padding: 0 var(--sp-4);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: var(--surface-strong);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  border-color: var(--accent);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-danger {
  border-color: rgba(255, 107, 107, 0.5);
  color: var(--danger);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  min-height: 36px;
  padding: 0 var(--sp-3);
  font-size: 14px;
}

.btn-icon {
  width: 44px;
  padding: 0;
}

/* ---- เลย์เอาต์ทั่วไป ---- */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: calc(var(--sp-5) + var(--safe-t)) var(--sp-4) calc(var(--sp-6) + var(--safe-b));
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  margin-bottom: var(--sp-4);
}

.stack > * + * {
  margin-top: var(--sp-3);
}

.row {
  display: flex;
  gap: var(--sp-2);
  align-items: center;
  flex-wrap: wrap;
}

.grow {
  flex: 1;
}

.eyebrow {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-hover);
  font-weight: 700;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 600;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}

.badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.badge.ok {
  color: var(--ok);
}

.badge.warn {
  color: var(--warn);
}

.badge.fail,
.badge.danger {
  color: var(--danger);
}

.notice {
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  background: rgba(255, 200, 87, 0.08);
  border: 1px solid rgba(255, 200, 87, 0.35);
  color: #ffe2a3;
  font-size: 14px;
}

.notice.info {
  background: rgba(91, 140, 255, 0.08);
  border-color: rgba(91, 140, 255, 0.35);
  color: #c9d8ff;
}

.notice.danger {
  background: rgba(255, 107, 107, 0.08);
  border-color: rgba(255, 107, 107, 0.4);
  color: #ffc9c9;
}

.notice ul {
  margin: var(--sp-2) 0 0;
  padding-left: 1.2em;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.checklist li {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}

.checklist li:last-child {
  border-bottom: 0;
}

.checklist .mark {
  flex: 0 0 22px;
  text-align: center;
  font-weight: 700;
}

.checklist .ok .mark {
  color: var(--ok);
}

.checklist .warn .mark {
  color: var(--warn);
}

.checklist .fail .mark {
  color: var(--danger);
}

/* ---- ฟอร์ม ---- */
label.field {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
}

label.field > span {
  display: block;
  margin-bottom: 4px;
}

input[type='text'],
input[type='number'],
select {
  width: 100%;
  min-height: 44px;
  padding: 0 var(--sp-3);
  border-radius: var(--r-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev-2);
  color: var(--text);
  font: inherit;
  font-size: 16px; /* กัน iOS ซูมเมื่อโฟกัส */
}

input:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

/* ---- รายการห้อง ---- */
.room-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.room-list li {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border);
}

.room-list li:last-child {
  border-bottom: 0;
}

/* ==========================================================================
   หน้าถ่ายภาพ
   ========================================================================== */
body.capture {
  overflow: hidden;
  height: 100dvh;
}

.cam {
  position: fixed;
  inset: 0;
  background: #000;
}

.cam video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hud-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: calc(var(--sp-3) + var(--safe-t)) var(--sp-3) var(--sp-3);
  background: linear-gradient(rgba(0, 0, 0, 0.65), transparent);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.step-card {
  background: rgba(8, 11, 20, 0.78);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--sp-2) var(--sp-3);
  font-size: 15px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.step-card strong {
  color: #fff;
}

.meters {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.meter {
  background: rgba(8, 11, 20, 0.7);
  border-radius: var(--r-sm);
  padding: 4px 6px;
  font-size: 12px;
  text-align: center;
  border: 1px solid var(--border);
}

.meter b {
  display: block;
  font-size: 13px;
}

.meter.ok b {
  color: var(--ok);
}

.meter.warn b {
  color: var(--warn);
}

.meter.fail b {
  color: var(--danger);
}

/* เส้นระดับ: แถบเป้าหมายมุมก้ม/เงย */
.pitch-guide {
  position: absolute;
  right: var(--sp-3);
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 46vh;
  border-radius: var(--r-pill);
  background: rgba(8, 11, 20, 0.55);
  border: 1px solid var(--border);
}

.pitch-guide .target {
  position: absolute;
  left: 3px;
  right: 3px;
  border-radius: var(--r-pill);
  background: rgba(61, 220, 151, 0.35);
  border: 1px solid var(--ok);
}

.pitch-guide .dot {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.4);
  transition: top 80ms linear;
}

.reticle {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 64px;
  height: 64px;
  margin: -32px 0 0 -32px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  pointer-events: none;
}


.hud-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--sp-3) var(--sp-3) calc(var(--sp-4) + var(--safe-b));
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
}

.hint {
  text-align: center;
  font-weight: 600;
  min-height: 1.5em;
  margin-bottom: var(--sp-2);
  text-shadow: 0 1px 3px #000;
}

.hint.warn {
  color: var(--warn);
}

.hint.fail {
  color: var(--danger);
}

.hint.ok {
  color: var(--ok);
}

.shutter-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--sp-3);
}

.shutter {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: 5px solid #fff;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.shutter:active {
  transform: scale(0.94);
}

.shutter.blocked {
  border-color: var(--danger);
}

.shutter.ready {
  border-color: var(--ok);
  background: rgba(61, 220, 151, 0.3);
}

.coverage {
  justify-self: start;
}

.coverage svg {
  display: block;
}

.shot-count {
  justify-self: end;
  text-align: right;
  font-size: 13px;
}

.shot-count b {
  font-size: 20px;
  display: block;
}

.flash {
  position: absolute;
  inset: 0;
  background: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease-out;
}

.flash.on {
  opacity: 0.6;
  transition: none;
}

.overlay-screen {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  background: var(--bg);
  z-index: 10;
}

.thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: var(--sp-2);
}

.thumb {
  position: relative;
  border-radius: var(--r-sm);
  overflow: hidden;
  border: 2px solid transparent;
  aspect-ratio: 3 / 4;
  background: var(--bg-elev-2);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thumb.warn {
  border-color: var(--warn);
}

.thumb.fail {
  border-color: var(--danger);
}

.thumb button {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 0;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

.thumb .tag {
  position: absolute;
  left: 4px;
  bottom: 4px;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: var(--r-pill);
  background: rgba(0, 0, 0, 0.65);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-2);
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--sp-3);
}

.stat b {
  display: block;
  font-size: 22px;
}

.stat span {
  font-size: 13px;
  color: var(--text-muted);
}

.diagram {
  display: block;
  width: 100%;
  max-width: 340px;
  margin: 0 auto var(--sp-3);
}

/* ==========================================================================
   หน้าแก้แปลน
   ========================================================================== */
body.editor {
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: calc(var(--sp-2) + var(--safe-t)) var(--sp-3) var(--sp-2);
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
}

.topbar .title {
  flex: 1;
  min-width: 0;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seg {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  overflow: hidden;
}

.seg button {
  min-height: 36px;
  padding: 0 var(--sp-3);
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.seg button[aria-pressed='true'] {
  background: var(--accent);
  color: var(--accent-ink);
}

.stage {
  position: relative;
  flex: 1;
  min-height: 0;
  background: #0b1020;
  touch-action: none;
}

.stage svg.plan {
  width: 100%;
  height: 100%;
  display: block;
  user-select: none;
  -webkit-user-select: none;
}

.stage .view3d {
  position: absolute;
  inset: 0;
}

.stage .view3d canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.plan .grid-minor {
  stroke: rgba(255, 255, 255, 0.04);
}

.plan .grid-major {
  stroke: rgba(255, 255, 255, 0.1);
}

.plan .floor {
  fill: rgba(91, 140, 255, 0.08);
}

.plan .wall {
  stroke: #e7ecff;
  stroke-linecap: square;
  cursor: pointer;
}

.plan .wall.sel {
  stroke: var(--accent);
}

.plan .wall-hit {
  stroke: transparent;
  cursor: pointer;
}

.plan .corner {
  fill: var(--bg);
  stroke: #e7ecff;
  cursor: grab;
}

.plan .corner.sel {
  fill: var(--accent);
  stroke: #fff;
}

.plan .dim {
  fill: #c9d3f5;
  font-weight: 600;
  paint-order: stroke;
  stroke: #0b1020;
  stroke-linejoin: round;
  pointer-events: none;
}

.plan .dim.sel {
  fill: var(--accent-hover);
}

.plan .opening {
  stroke-linecap: butt;
  cursor: grab;
}

.plan .opening.door {
  stroke: var(--door);
}

.plan .opening.window {
  stroke: var(--window);
}

.plan .opening.sel {
  stroke: #fff;
}

.plan .cam-pt {
  fill: rgba(61, 220, 151, 0.75);
  pointer-events: none;
}

.stage-hud {
  position: absolute;
  left: var(--sp-3);
  top: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  pointer-events: none;
  max-width: calc(100% - 2 * var(--sp-3));
}

.stage-hud > * {
  pointer-events: auto;
}

.zoom-ctl {
  position: absolute;
  right: var(--sp-3);
  bottom: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.panel {
  background: var(--bg-elev);
  border-top: 1px solid var(--border);
  padding: var(--sp-3) var(--sp-4) calc(var(--sp-3) + var(--safe-b));
  max-height: 46dvh;
  overflow-y: auto;
}

.panel h3 {
  font-size: 16px;
  margin-bottom: var(--sp-2);
}

.kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px var(--sp-3);
  font-size: 14px;
}

.kv dt {
  color: var(--text-muted);
}

.kv dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.menu {
  position: absolute;
  right: var(--sp-3);
  top: calc(56px + var(--safe-t));
  z-index: 20;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  padding: var(--sp-2);
  display: flex;
  flex-direction: column;
  min-width: 220px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.menu button {
  text-align: left;
  min-height: 44px;
  padding: 0 var(--sp-3);
  border: 0;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.menu button:hover {
  background: var(--surface-strong);
}

.menu small {
  display: block;
  color: var(--text-faint);
  font-size: 12px;
}

dialog {
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  background: var(--bg-elev);
  color: var(--text);
  padding: var(--sp-4);
  width: min(420px, calc(100vw - 32px));
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--sp-6) + var(--safe-b));
  transform: translateX(-50%);
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  padding: var(--sp-2) var(--sp-4);
  font-size: 14px;
  z-index: 50;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  max-width: calc(100vw - 32px);
}

@media (min-width: 900px) {
  body.editor .workspace {
    flex-direction: row;
  }

  body.editor .panel {
    width: 360px;
    max-height: none;
    border-top: 0;
    border-left: 1px solid var(--border);
  }
}

.workspace {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}