/* =========================================================
   GunWaree design system
   Tokens live in :root so every later page reuses them.
   ========================================================= */

:root {
  /* Color: sampled from the reference design, then tuned for contrast */
  --c-ink-900: #0A303A;        /* left panel */
  --c-ink-850: #0D3943;        /* scene cards */
  --c-ink-800: #12434D;        /* card rules, gauge cap */
  --c-ink-700: #153F43;        /* headings on paper */
  --c-teal-600: #19766D;       /* icons, focus ring */
  --c-aqua-400: #7CEBE3;       /* brand accent on dark */
  --c-aqua-200: #C4F7F2;       /* pale accent on dark */
  --c-mint-100: #E8F2ED;       /* chip on paper */
  --c-panel-text: #D6EEE6;     /* body text on panel */
  --c-panel-muted: #9DBDB9;    /* secondary text on panel */

  --c-paper: #F6F4EF;          /* warm off-white page background */
  --c-paper-raised: #FBFAF7;   /* surfaces sitting on paper */
  --c-paper-hover: #EDEAE2;    /* hover fill on paper */
  --c-line: #D8D4C9;           /* hairlines on paper */
  --c-line-strong: #10292E;    /* button outline */
  --c-text: #10292E;           /* body text on paper */
  --c-muted: #56696B;          /* secondary text on paper (5:1 on paper) */

  /* Level colors: flat, muted. Shared by /risk, district level and alert severity */
  --c-level-green: #5FB98F;    /* none, safe, green */
  --c-level-yellow: #E2C15A;   /* watch, medium, yellow */
  --c-level-orange: #E0893F;   /* warning, high */
  --c-level-red: #D65A4A;      /* critical, danger, red */
  --c-level-grey: #8C9EA0;     /* nodata */

  /* Form feedback */
  --c-input-border: #5B6B6D;   /* 5:1 on paper, meets non-text contrast */
  --c-error: #A3392B;          /* error text and borders on paper */
  --c-error-bg: #FBEEEA;

  /* Water tint for submerged scene elements */
  --c-water: #0F5660;

  /* Type */
  --font-display: "Anuphan", "IBM Plex Sans Thai", "Leelawadee UI", "Tahoma", sans-serif;
  --font-body: "IBM Plex Sans Thai", "Leelawadee UI", "Tahoma", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Consolas", monospace;

  --fs-12: 0.75rem;
  --fs-14: 0.875rem;
  --fs-16: 1rem;
  --fs-18: 1.125rem;
  --fs-22: 1.375rem;
  --fs-28: 1.75rem;
  --fs-36: 2.25rem;
  --fs-display: clamp(2.25rem, 1.3rem + 2vw, 2.875rem);
  --fs-tagline: clamp(1.75rem, 1.1rem + 1.5vw, 2.5rem);

  --lh-tight: 1.12;
  --lh-latin: 1.5;
  --lh-thai: 1.75;             /* room for stacked tone marks and vowels */

  --tracking-tight: -0.02em;
  --tracking-label: 0.08em;

  /* Spacing: 4px grid */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-6: 1.5rem;
  --s-8: 2rem;
  --s-12: 3rem;
  --s-16: 4rem;
  --s-24: 6rem;

  /* Radii: restrained, three steps only */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;

  /* Motion */
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --ease: cubic-bezier(0.2, 0, 0, 1);

  --gutter: clamp(1rem, 0.6rem + 1vw, 1.5rem);
}

/* ---------- Base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--c-paper);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: var(--lh-latin);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

:lang(th) { line-height: var(--lh-thai); }

h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

a { color: inherit; }

[hidden] { display: none !important; }

svg { display: block; flex-shrink: 0; }

:focus-visible {
  outline: 2px solid var(--c-teal-600);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-4);
  z-index: 10;
  padding: var(--s-2) var(--s-4);
  background: var(--c-ink-900);
  color: var(--c-paper);
  border-radius: var(--r-sm);
  transform: translateY(-200%);
}
.skip-link:focus-visible { transform: none; }

/* Bilingual pair: Thai line sits under the English line */
.th {
  display: block;
  font-family: var(--font-body);
}

.nowrap { white-space: nowrap; }

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}

/* IBM Plex Mono has no Thai glyphs: Thai inside mono labels uses the body face */
.mono [lang="th"],
.eyebrow [lang="th"],
.chip [lang="th"],
.s-tag [lang="th"],
.gauge__value [lang="th"] {
  font-family: var(--font-body);
  text-transform: none;
  letter-spacing: 0;
}

.footer-links a[aria-current="page"] { text-decoration-color: currentColor; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

/* ---------- Brand mark ---------- */

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-28);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}
.logo svg { width: 26px; height: 32px; }

/* ---------- Chip ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-1) var(--s-3);
  background: var(--c-mint-100);
  color: var(--c-ink-700);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  line-height: 1.6;
}
.chip svg { width: 16px; height: 16px; color: var(--c-teal-600); }

/* ---------- Action buttons (links styled as large choices) ---------- */

.choice-list {
  display: grid;
  gap: var(--s-3);
}

.choice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  min-height: 4.5rem;
  padding: var(--s-3) var(--s-6);
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-md);
  background: var(--c-paper-raised);
  color: var(--c-text);
  text-decoration: none;
  transition:
    background-color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}
.choice__label {
  display: grid;
  gap: 0;
}
.choice__en {
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 600;
  line-height: 1.3;
}
.choice__th {
  font-size: var(--fs-14);
  color: var(--c-muted);
  line-height: 1.6;
}
.choice svg { width: 20px; height: 20px; }

.choice:hover { background: var(--c-paper-hover); }

.choice--primary {
  background: var(--c-ink-900);
  border-color: var(--c-ink-900);
  color: var(--c-paper);
}
.choice--primary .choice__th { color: var(--c-panel-muted); }
.choice--primary:hover {
  background: var(--c-ink-700);
  border-color: var(--c-ink-700);
}

.choice:focus-visible {
  outline-offset: 3px;
  border-radius: var(--r-md);
}

/* ---------- Footer ---------- */

.site-footer {
  display: grid;
  gap: var(--s-4);
  font-size: var(--fs-12);
  color: var(--c-muted);
  line-height: 1.6;
}
.site-footer :lang(th) { line-height: 1.7; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-6);
  font-size: var(--fs-14);
}
.footer-links a,
.footer-credit a {
  text-decoration: underline;
  text-decoration-color: var(--c-line);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: text-decoration-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.footer-links a { color: var(--c-text); }
.footer-links a:hover,
.footer-credit a:hover {
  color: var(--c-ink-700);
  text-decoration-color: currentColor;
}
.footer-links .th { display: inline; color: var(--c-muted); }

.footer-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--c-line);
}

.footer-emergency strong { color: var(--c-text); font-weight: 600; }

/* =========================================================
   Page shell: dark panel (brand + 3D scene) beside the content column.
   Used by index, login, signup and forgot-password.
   ========================================================= */

.shell {
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  padding: var(--gutter);
  grid-template-columns: minmax(400px, 36%) 1fr;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "brand  actions"
    "scene  actions"
    "scene  footer";
  column-gap: clamp(2rem, 6vw, 7rem);
}

/* One continuous dark panel behind brand + scene on wide screens */
.panel-bg {
  grid-column: 1;
  grid-row: 1 / -1;
  background: var(--c-ink-900);
  border-radius: var(--r-lg);
}

/* ---- Brand block (top of panel) ---- */

.brand {
  grid-area: brand;
  position: relative;
  padding: clamp(1.75rem, 0.8rem + 2.4vw, 3rem) clamp(1.5rem, 0.8rem + 2.4vw, 3.5rem) 0;
  color: var(--c-panel-text);
}
.brand .logo { color: #FFFFFF; }

.tagline {
  margin-top: clamp(1.5rem, 0.5rem + 2vw, 3rem);
  font-family: var(--font-display);
  font-size: var(--fs-tagline);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: #FFFFFF;
}
.tagline .en { display: block; }
.tagline .th {
  margin-top: var(--s-3);
  font-size: var(--fs-18);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--c-aqua-200);
  line-height: var(--lh-thai);
}

.intro {
  margin-top: var(--s-6);
  max-width: 34rem;
  display: grid;
  gap: var(--s-3);
  font-size: var(--fs-16);
}
.intro p:first-child { line-height: 1.6; }
.intro .th-p { color: var(--c-panel-muted); }

/* ---- Actions (right column) ---- */

.actions {
  grid-area: actions;
  align-self: center;
  justify-self: start;
  width: min(100%, 33rem);
  padding: var(--s-16) 0 var(--s-8);
}

.welcome {
  margin-top: var(--s-6);
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--c-ink-700);
}
.welcome .th {
  margin-top: var(--s-2);
  font-size: var(--fs-22);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--c-muted);
  line-height: 1.6;
}

.actions .choice-list { margin-top: var(--s-8); }

.reassure {
  display: flex;
  gap: var(--s-3);
  margin-top: var(--s-8);
  font-size: var(--fs-14);
  color: var(--c-muted);
  line-height: 1.6;
}
.reassure svg { width: 18px; height: 18px; margin-top: 3px; color: var(--c-teal-600); }
.reassure .th { line-height: 1.7; }

/* ---- Footer placement on page 1 ---- */

.shell .site-footer {
  grid-area: footer;
  align-self: end;
  width: min(100%, 40rem);
  padding: var(--s-6) 0 var(--s-2);
}

/* =========================================================
   3D flood scene
   ========================================================= */

.scene-wrap {
  grid-area: scene;
  position: relative;
  min-height: 340px;
  overflow: hidden;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
}

.scene-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: var(--s-4) clamp(1.5rem, 0.8rem + 2.4vw, 3.5rem);
  background: var(--c-ink-900);
  border-top: 1px solid rgba(196, 247, 242, 0.14);
  color: var(--c-panel-muted);
}
.scene-caption .th {
  display: inline;
  font-family: var(--font-body);
  font-size: var(--fs-12);
  text-transform: none;
  letter-spacing: 0;
}

.scene {
  /* Tunables, overridden at narrow widths */
  --rx: 56deg;
  --rz: -22deg;
  --scale: 0.78;
  --cm: 3.6px;               /* scene pixels per centimetre of water */
  --card-w: 224px;

  position: absolute;
  inset: 0;
  perspective: 1500px;
  perspective-origin: 50% 0%;
}

.world {
  position: absolute;
  left: 48%;
  top: 35%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  transform: scale(var(--scale)) rotateX(var(--rx)) rotateZ(var(--rz));
  will-change: transform;
}

/* Everything inside the world is positioned by its centre on the floor */
.world > * {
  position: absolute;
  left: 0;
  top: 0;
  transform-style: preserve-3d;
}

/* Topographic strata: flat outlines stacked at rising heights */
.stratum {
  width: 600px;
  height: 600px;
  margin: -300px 0 0 -300px;
  color: var(--c-aqua-400);
}
.stratum svg { width: 100%; height: 100%; overflow: visible; }
.stratum--0 { transform: translateZ(0); opacity: 0.22; }
.stratum--1 { transform: translateZ(8px); opacity: 0.3; }
.stratum--2 { transform: translateZ(16px); opacity: 0.38; }
.stratum--3 { transform: translateZ(24px); opacity: 0.46; }

/* Water plane: moved by JS along Z only */
.water {
  width: 640px;
  height: 640px;
  margin: -320px 0 0 -320px;
  transform: translateZ(calc(18 * var(--cm)));
  will-change: transform;
}
.water svg { width: 100%; height: 100%; overflow: visible; }
.water__body { fill: var(--c-aqua-400); fill-opacity: 0.12; }
.water__edge { fill: none; stroke: var(--c-aqua-200); stroke-opacity: 0.7; stroke-width: 1.25; }
.water__ripple { fill: none; stroke: var(--c-aqua-200); stroke-opacity: 0.28; stroke-width: 1; }

/* Cards: real product components, lying flat at a height */
.s-card {
  width: var(--card-w);
  margin-left: calc(var(--card-w) / -2);
  padding: 14px 16px 14px;
  background: var(--c-ink-850);
  border: 1px solid rgba(196, 247, 242, 0.22);
  border-radius: var(--r-md);
  color: var(--c-panel-text);
  font-size: 12px;
  line-height: 1.45;
  transform: translate3d(var(--x), var(--y), calc(var(--z) * var(--cm)));
  backface-visibility: hidden;
}
.s-card :lang(th) { line-height: 1.65; }

/* Flat water tint laid over a card when it sits below the waterline */
.s-card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--c-water);
  opacity: 0;
  transition: opacity 900ms var(--ease);
  pointer-events: none;
}
.s-card.is-under::after { opacity: 0.62; }

/* Placement on the floor (x, y) and height in centimetres (z) */
.s-card--district { --x: -130px; --y: -240px; --z: 4; }
.s-card--case     { --x: -75px;  --y: -95px;  --z: 13; }
.s-card--status   { --x: -25px;  --y: 50px;   --z: 23; }
.s-card--risk     { --x: 20px;   --y: 195px;  --z: 33; }
.gauge            { --x: 150px;  --y: 20px; }

/* Depth: farther (lower) cards fade */
.s-card--district { opacity: 0.78; }
.s-card--case { opacity: 0.9; }

.s-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}
.s-card__title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  color: #FFFFFF;
}
.s-card__title .th {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 11.5px;
  color: var(--c-panel-muted);
}
.s-tag {
  flex-shrink: 0;
  padding: 1px 6px;
  border: 1px solid rgba(196, 247, 242, 0.35);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-aqua-200);
  line-height: 1.5;
}
.s-figure {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 10px;
}
.s-figure__num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}
.s-figure__unit { font-size: 13px; color: var(--c-panel-muted); }

.s-level {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 7px;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 600;
  color: #0A303A;
  line-height: 1.6;
  white-space: nowrap;
}
.s-level .th { display: inline; font-weight: 500; }
.s-level--orange { background: var(--c-level-orange); }
.s-level--yellow { background: var(--c-level-yellow); }
.s-level--green { background: var(--c-level-green); }

.s-status {
  padding: 0 6px;
  border: 1px solid var(--c-aqua-200);
  border-radius: var(--r-sm);
  color: var(--c-aqua-200);
  font-size: 10.5px;
  line-height: 1.6;
  white-space: nowrap;
}
.s-status [lang="th"] { line-height: 1.6; }

.s-desc {
  margin-top: 10px;
  font-size: 12px;
  color: var(--c-panel-text);
}

.s-meter {
  position: relative;
  height: 4px;
  margin-top: 10px;
  background: rgba(196, 247, 242, 0.14);
  border-radius: 2px;
}
.s-meter span {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 2px;
  background: var(--c-level-orange);
}

.s-meta {
  margin-top: 8px;
  color: var(--c-panel-muted);
  font-size: 11px;
}
.s-meta .nowrap { white-space: nowrap; }

.mono { font-size: 10.5px; color: var(--c-panel-text); }
.s-rule {
  height: 1px;
  margin: 10px 0 8px;
  background: rgba(196, 247, 242, 0.14);
}
.s-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

/* Status line: from alert to resolution */
.s-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 12px;
}
.s-step {
  position: relative;
  padding-top: 14px;
  font-size: 10.5px;
  line-height: 1.35;
  color: var(--c-panel-muted);
}
.s-step .th { font-size: 10px; line-height: 1.55; }
.s-step::before {
  /* track segment */
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(196, 247, 242, 0.3);
}
.s-step::after {
  /* marker */
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--c-aqua-200);
  background: var(--c-ink-850);
}
.s-step.is-done::before { background: var(--c-aqua-400); }
.s-step.is-done::after { background: var(--c-aqua-400); border-color: var(--c-aqua-400); }
.s-step.is-current { color: #FFFFFF; }
.s-step.is-current::after { background: var(--c-aqua-200); }
.s-step:last-child::before { right: auto; width: 0; }

/* Staff gauge: stands upright and faces the viewer */
.gauge {
  --gauge-h: calc(40 * var(--cm));
  width: 38px;
  height: var(--gauge-h);
  margin: calc(var(--gauge-h) * -1) 0 0 -19px;
  transform-origin: 50% 100%;
  transform: translate3d(var(--x), var(--y), 0) rotateZ(calc(var(--rz) * -1)) rotateX(-90deg);
}
.gauge__post {
  position: absolute;
  left: 50%;
  bottom: calc(var(--gauge-h) * -0.08);
  width: 4px;
  height: calc(var(--gauge-h) * 1.18);
  margin-left: -2px;
  background: var(--c-ink-800);
}
.gauge__board {
  position: absolute;
  inset: 0;
  background: #E9F1EC;
  border-radius: 2px;
  overflow: hidden;
}
.gauge__board svg { width: 100%; height: 100%; }
.gauge__zones rect { shape-rendering: crispEdges; }
.gauge__ticks line { stroke: #0A303A; stroke-width: 1; shape-rendering: crispEdges; }
.gauge__ticks text {
  font-family: var(--font-mono);
  font-size: 8px;
  fill: #0A303A;
}
.gauge__readout {
  position: absolute;
  left: calc(100% + 8px);
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transform: translateY(calc(18 * var(--cm) * -1 + 50%));
  will-change: transform;
}
.gauge__readout::before {
  content: "";
  width: 12px;
  height: 1px;
  margin-left: -8px;
  background: var(--c-aqua-200);
}
.gauge__value {
  padding: 2px 7px;
  border-radius: var(--r-sm);
  background: var(--c-aqua-200);
  color: #0A303A;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
}
.gauge__value .th { display: inline; font-family: var(--font-body); font-size: 10.5px; }

/* ---------- Skeletons ---------- */

.skeleton { display: none; }

.is-loading .skeleton { display: block; }
.is-loading [data-reveal] { visibility: hidden; }

.is-ready [data-reveal] {
  animation: reveal var(--dur-base) var(--ease) both;
}
@keyframes reveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.sk {
  background: var(--sk-color, rgba(196, 247, 242, 0.08));
  border-radius: var(--r-md);
}

.skeleton--scene {
  position: absolute;
  inset: 0;
}
.skeleton--scene .sk { position: absolute; }
.skeleton--scene .sk--card {
  width: 46%;
  height: 16%;
  transform: skewX(-24deg) rotate(-12deg);
}
.skeleton--scene .sk--a { left: 28%; top: 22%; }
.skeleton--scene .sk--b { left: 14%; top: 42%; }
.skeleton--scene .sk--c { left: 34%; top: 60%; }
.skeleton--scene .sk--gauge { left: 76%; top: 14%; width: 22px; height: 46%; border-radius: var(--r-sm); }

.skeleton--actions {
  --sk-color: #E6E2D8;
  position: absolute;
  inset: var(--s-16) 0 auto 0;
}
.actions { position: relative; }
.skeleton--actions .sk { height: 1rem; margin-bottom: var(--s-3); }
.skeleton--actions .sk--chip { width: 8.5rem; height: 1.75rem; border-radius: var(--r-sm); }
.skeleton--actions .sk--h1 { width: 90%; height: 3rem; margin-top: var(--s-6); }
.skeleton--actions .sk--h1b { width: 55%; height: 1.5rem; }
.skeleton--actions .sk--btn { height: 4.5rem; margin-top: var(--s-3); }
.skeleton--actions .sk--btn:first-of-type { margin-top: var(--s-8); }

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
  .shell { grid-template-columns: minmax(380px, 42%) 1fr; column-gap: clamp(2rem, 4vw, 4rem); }
  .scene { --scale: 0.68; }
  .world { top: 30%; }
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    grid-template-areas:
      "brand"
      "actions"
      "scene"
      "footer";
    row-gap: 0;
  }
  .panel-bg { display: none; }

  .brand {
    background: var(--c-ink-900);
    border-radius: var(--r-lg);
    padding: var(--s-6) var(--s-6) var(--s-8);
  }
  .brand .logo { font-size: var(--fs-22); }
  .brand .logo svg { width: 22px; height: 27px; }
  .tagline { margin-top: var(--s-6); }
  .intro { margin-top: var(--s-4); font-size: var(--fs-14); }

  .actions {
    width: 100%;
    max-width: 34rem;
    padding: var(--s-8) var(--s-1) var(--s-8);
  }
  .welcome { margin-top: var(--s-4); }
  .actions .choice-list { margin-top: var(--s-6); }
  .reassure { margin-top: var(--s-6); }
  .skeleton--actions { inset: var(--s-8) var(--s-1) auto var(--s-1); }

  .scene-wrap {
    min-height: 360px;
    background: var(--c-ink-900);
    border-radius: var(--r-lg);
  }
  .scene {
    --rx: 46deg;
    --rz: -26deg;
    --card-w: 210px;
    perspective-origin: 50% 10%;
  }
  .scene { --scale: 0.74; --cm: 3px; }
  .world { top: 44%; left: 50%; }
  .s-card--case { --x: -70px; --y: -110px; }
  .s-card--risk { --x: 30px;  --y: 70px; }
  .gauge        { --x: 150px; --y: -10px; }
  .scene-caption { padding: var(--s-3) var(--s-6); }
  /* Two cards are enough on narrow screens */
  .s-card--status,
  .s-card--district { display: none; }

  .shell .site-footer { padding-top: var(--s-8); width: 100%; }
}

@media (max-width: 420px) {
  .scene { --card-w: 196px; }
  .scene-wrap { min-height: 330px; }
}

/* ---------- Reduced motion: static, fully composed frame ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
  .world, .water, .gauge__readout { will-change: auto; }
}

/* =========================================================
   Legal pages (terms.html, privacy.html)
   ========================================================= */

.legal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
  margin: var(--gutter);
  padding: var(--s-4) var(--s-6);
  background: var(--c-ink-900);
  border-radius: var(--r-lg);
}
.legal-header .logo { color: #FFFFFF; font-size: var(--fs-22); }
.legal-header .logo svg { width: 22px; height: 27px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-3);
  border: 1px solid rgba(196, 247, 242, 0.35);
  border-radius: var(--r-md);
  color: var(--c-panel-text);
  text-decoration: none;
  font-size: var(--fs-14);
  line-height: 1.4;
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.back-link svg { width: 16px; height: 16px; }
.back-link .th { display: inline; color: var(--c-panel-muted); }
.back-link:hover { background: var(--c-ink-800); border-color: var(--c-aqua-200); }
.back-link:focus-visible { outline-color: var(--c-aqua-200); }

.legal {
  width: min(100% - 2 * var(--gutter), 46rem);
  margin: var(--s-12) auto var(--s-16);
}
.legal__title {
  margin-top: var(--s-4);
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.4rem + 2vw, 2.75rem);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--c-ink-700);
}
.legal__title .th {
  margin-top: var(--s-2);
  font-size: var(--fs-22);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--c-muted);
  line-height: 1.6;
}
.legal__meta {
  margin-top: var(--s-4);
  font-size: var(--fs-14);
  color: var(--c-muted);
}

.notice {
  margin-top: var(--s-8);
  padding: var(--s-4) var(--s-6);
  background: var(--c-mint-100);
  border: 1px solid #CFE2DA;
  border-radius: var(--r-md);
  color: var(--c-ink-700);
}
.notice p + p { margin-top: var(--s-2); }
.notice strong { font-weight: 600; }

.emergency-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1px;
  margin-top: var(--s-4);
  background: #CFE2DA;
  border: 1px solid #CFE2DA;
  border-radius: var(--r-md);
  overflow: hidden;
}
.emergency-list li {
  padding: var(--s-3) var(--s-4);
  background: var(--c-paper-raised);
}
.emergency-list .num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 500;
  color: var(--c-ink-700);
  line-height: 1.3;
}
.emergency-list .label { font-size: var(--fs-14); line-height: 1.5; }
.emergency-list .th { font-size: var(--fs-12); color: var(--c-muted); }

.legal-toc {
  margin-top: var(--s-8);
  padding: var(--s-4) 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.legal-toc ol {
  margin: var(--s-2) 0 0;
  padding-left: var(--s-6);
  columns: 2 14rem;
  column-gap: var(--s-8);
  font-size: var(--fs-14);
}
.legal-toc li { break-inside: avoid; padding: 2px 0; }
.legal-toc a {
  color: var(--c-text);
  text-decoration: underline;
  text-decoration-color: var(--c-line);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--dur-fast) var(--ease);
}
.legal-toc a:hover { text-decoration-color: currentColor; }
.legal-toc .toc-th { color: var(--c-muted); }
.legal-toc .eyebrow { color: var(--c-muted); }

.legal section {
  margin-top: var(--s-12);
  scroll-margin-top: var(--s-8);
}
.legal h2 {
  font-family: var(--font-display);
  font-size: var(--fs-22);
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-ink-700);
}
.legal h2 .th {
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--c-muted);
  line-height: 1.6;
}
.legal h2 .num {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--c-teal-600);
  margin-right: var(--s-2);
}

.lang-pair {
  display: grid;
  gap: var(--s-3);
  margin-top: var(--s-4);
}
.lang-pair > [lang="th"] { color: #2E4447; }

.legal ul.plain {
  margin: var(--s-2) 0 0;
  padding-left: var(--s-6);
}
.legal ul.plain li + li { margin-top: var(--s-1); }

.legal dl.data-table {
  display: grid;
  grid-template-columns: minmax(9rem, 30%) 1fr;
  margin-top: var(--s-4);
  border-top: 1px solid var(--c-line);
  font-size: var(--fs-14);
}
.legal dl.data-table dt,
.legal dl.data-table dd {
  padding: var(--s-3) var(--s-3) var(--s-3) 0;
  border-bottom: 1px solid var(--c-line);
}
.legal dl.data-table dt { font-weight: 600; color: var(--c-ink-700); }
.legal dl.data-table .th { color: var(--c-muted); font-weight: 400; }

.legal a:not(.choice) {
  color: var(--c-ink-700);
  text-decoration-color: #9DB7B0;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--dur-fast) var(--ease);
}
.legal a:not(.choice):hover { text-decoration-color: currentColor; }

.legal-footer {
  width: min(100% - 2 * var(--gutter), 46rem);
  margin: 0 auto var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--c-line);
}

@media (max-width: 560px) {
  .legal dl.data-table { grid-template-columns: 1fr; }
  .legal dl.data-table dt { border-bottom: 0; padding-bottom: 0; }
  .legal-header { padding: var(--s-3) var(--s-4); }
}

/* =========================================================
   Auth pages: login, signup, forgot password
   ========================================================= */

.auth {
  grid-area: actions;
  display: flex;
  flex-direction: column;
  width: min(100%, 34rem);
  padding: var(--s-8) 0 var(--s-6);
}

.auth__back {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-1) 0;
  color: var(--c-text);
  font-size: var(--fs-14);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
  transition: text-decoration-color var(--dur-fast) var(--ease);
}
.auth__back svg { width: 16px; height: 16px; }
.auth__back [lang="th"] { color: var(--c-muted); font-weight: 400; }
.auth__back:hover { text-decoration-color: currentColor; }

.auth__body {
  position: relative;
  margin-block: auto;
  padding-top: var(--s-12);
}
.auth .welcome { margin-top: 0; }
.auth .lede {
  margin-top: var(--s-3);
  color: var(--c-muted);
  font-size: var(--fs-14);
}
.auth .lede [lang="th"] { display: block; }

/* ---------- Form ---------- */

.form {
  display: grid;
  gap: var(--s-6);
  margin-top: var(--s-8);
}
.form[hidden] { display: none; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-6) var(--s-4);
}

.field {
  display: grid;
  gap: var(--s-2);
  align-content: start;
}

.field__label {
  font-size: var(--fs-14);
  font-weight: 500;
  line-height: 1.5;
  color: var(--c-text);
}
.field__label [lang="th"] {
  margin-left: var(--s-1);
  font-weight: 400;
  color: var(--c-muted);
  line-height: 1.5;
}

.input {
  display: flex;
  align-items: center;
  min-height: 3.25rem;
  border: 1px solid var(--c-input-border);
  border-radius: var(--r-md);
  background: var(--c-paper-raised);
  transition: border-color var(--dur-fast) var(--ease);
}
.input:hover { border-color: var(--c-ink-900); }
.input:focus-within {
  border-color: var(--c-ink-900);
  outline: 2px solid var(--c-teal-600);
  outline-offset: 2px;
}
.input > svg {
  width: 18px;
  height: 18px;
  margin-left: var(--s-4);
  color: var(--c-muted);
}
.input input {
  flex: 1;
  min-width: 0;
  height: 3.25rem;
  padding: 0 var(--s-4) 0 var(--s-3);
  border: 0;
  background: transparent;
  color: var(--c-text);
  font: inherit;
  font-size: var(--fs-16);
}
.input input:focus { outline: none; }
.input input::placeholder { color: var(--c-muted); opacity: 1; }

.input__toggle {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-right: var(--s-1);
  padding: 0;
  border: 0;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--c-muted);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.input__toggle:hover { color: var(--c-ink-900); background: var(--c-paper-hover); }
.input__toggle svg { width: 20px; height: 20px; margin: 0; }
.input__toggle .icon-hide,
.input__toggle[aria-pressed="true"] .icon-show { display: none; }
.input__toggle[aria-pressed="true"] .icon-hide { display: block; }

.field.is-invalid .input { border-color: var(--c-error); }

.field__hint,
.field__error {
  font-size: var(--fs-12);
  line-height: 1.6;
}
.field__hint { color: var(--c-muted); }
.field__error { color: var(--c-error); font-weight: 500; }
.field__hint [lang="th"],
.field__error [lang="th"] { display: block; line-height: 1.7; }

.form-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-4);
}

.check {
  display: inline-flex;
  align-items: flex-start;
  gap: var(--s-3);
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--c-text);
  cursor: pointer;
}
.check input {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--c-ink-900);
  cursor: pointer;
}
.check [lang="th"] { color: var(--c-muted); }

.text-link {
  color: var(--c-ink-700);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #9DB7B0;
  text-underline-offset: 3px;
  transition: text-decoration-color var(--dur-fast) var(--ease);
}
.text-link:hover { text-decoration-color: currentColor; }

/* ---------- Buttons ---------- */

.btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  width: 100%;
  min-height: 3.5rem;
  padding: var(--s-2) var(--s-6);
  border: 1px solid var(--c-ink-900);
  border-radius: var(--r-md);
  background: var(--c-ink-900);
  color: var(--c-paper);
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 600;
  line-height: 1.3;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.btn [lang="th"] {
  margin-left: var(--s-2);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--c-panel-muted);
}
.btn svg { width: 20px; height: 20px; }
.btn:hover { background: var(--c-ink-700); border-color: var(--c-ink-700); }
.btn:focus-visible { border-radius: var(--r-md); }
.btn[aria-busy="true"] { cursor: progress; background: var(--c-ink-700); border-color: var(--c-ink-700); }

.btn--secondary {
  background: var(--c-paper-raised);
  border-color: var(--c-line-strong);
  color: var(--c-text);
}
.btn--secondary [lang="th"] { color: var(--c-muted); }
.btn--secondary:hover { background: var(--c-paper-hover); border-color: var(--c-line-strong); }

/* ---------- Feedback ---------- */

.form-alert {
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--c-error);
  border-radius: var(--r-md);
  background: var(--c-error-bg);
  color: var(--c-error);
  font-size: var(--fs-14);
  line-height: 1.6;
}
.form-alert [lang="th"] { display: block; line-height: 1.7; }
.form-alert a { color: inherit; font-weight: 600; }
.form-alert:empty { display: none; }

.form-note {
  padding: var(--s-3) var(--s-4);
  border-radius: var(--r-md);
  background: var(--c-mint-100);
  color: var(--c-ink-700);
  font-size: var(--fs-14);
  line-height: 1.6;
}
.form-note [lang="th"] { display: block; line-height: 1.7; }
.form-note:empty { display: none; }

.form-status {
  font-size: var(--fs-12);
  color: var(--c-muted);
  line-height: 1.6;
}
.form-status [lang="th"] { display: block; }
.form-status:empty { display: none; }

.auth-alt {
  margin-top: var(--s-6);
  font-size: var(--fs-14);
  color: var(--c-muted);
  text-align: center;
  line-height: 1.6;
}
.auth-alt [lang="th"] { display: block; line-height: 1.8; }

.reassure--box {
  margin-top: var(--s-8);
  padding: var(--s-4) var(--s-6);
  background: var(--c-mint-100);
  border-radius: var(--r-md);
  color: var(--c-ink-700);
}

/* Signed-in or finished state */
.done {
  margin-top: var(--s-8);
  display: grid;
  gap: var(--s-4);
}
.done[hidden] { display: none; }
.done__title {
  font-family: var(--font-display);
  font-size: var(--fs-22);
  font-weight: 600;
  line-height: 1.3;
  color: var(--c-ink-700);
}
.done__title [lang="th"] {
  display: block;
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 500;
  color: var(--c-muted);
  line-height: 1.6;
}
.done p { font-size: var(--fs-14); line-height: 1.6; }
.done p [lang="th"] { display: block; color: var(--c-muted); line-height: 1.7; }
.done strong { font-weight: 600; }

/* Skeleton for the form column */
.skeleton--auth {
  --sk-color: #E6E2D8;
  position: absolute;
  inset: var(--s-12) 0 auto 0;
}
.skeleton--auth .sk { height: 3.25rem; margin-top: var(--s-6); }
.skeleton--auth .sk--h1 { width: 85%; height: 3rem; margin-top: 0; }
.skeleton--auth .sk--h1b { width: 50%; height: 1.5rem; margin-top: var(--s-3); }
.skeleton--auth .sk--btn { height: 3.5rem; margin-top: var(--s-8); }

@media (max-width: 860px) {
  .auth {
    width: 100%;
    max-width: 34rem;
    padding: var(--s-6) var(--s-1) var(--s-8);
  }
  .auth__body { padding-top: var(--s-6); }
  .skeleton--auth { inset: var(--s-6) 0 auto 0; }
  /* Auth pages keep the panel short so the form starts high */
  .shell--auth .intro { display: none; }
  .shell--auth .brand { padding-bottom: var(--s-6); }
}

@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
  .reassure--box { padding: var(--s-4); }
}

button.text-link {
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button.text-link [lang="th"] { display: inline; margin-left: var(--s-1); font-weight: 500; }
.auth-alt--tight { margin-top: 0; }

/* Arrival from the intro warp: the ink colour the warp ends on fades away */
.is-arriving body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--c-ink-900);
  pointer-events: none;
  animation: arrive 700ms var(--ease) 80ms both;
}
@keyframes arrive {
  from { opacity: 1; }
  to { opacity: 0; visibility: hidden; }
}

/* =========================================================
   Language switch [TH|EN]
   A sliding plate marks the active language. Used on dark or photo backgrounds.
   ========================================================= */

.lang-switch {
  position: relative;
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  padding: 3px;
  border: 1px solid rgba(234, 246, 248, 0.5);
  border-radius: var(--r-md);
  background: rgba(10, 48, 58, 0.55);
}
.lang-switch::before {
  content: "";
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: 3px;
  width: calc(50% - 3px);
  border-radius: 5px;
  background: var(--c-aqua-200);
  transition: transform var(--dur-base) var(--ease);
}
:root[data-lang="en"] .lang-switch::before { transform: translateX(100%); }

.lang-switch button {
  position: relative;
  z-index: 1;
  min-width: 2.9rem;
  height: 2rem;
  padding: 0 var(--s-3);
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: rgba(234, 246, 248, 0.82);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease);
}
.lang-switch button:hover { color: #FFFFFF; }
.lang-switch button[aria-pressed="true"] { color: var(--c-ink-900); }
.lang-switch button:focus-visible { outline-color: var(--c-aqua-200); outline-offset: 2px; }

/* Arriving from the intro warp, which ends on a cloud-white wash */
.is-arriving-sky body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #EDF1F4;
  pointer-events: none;
  animation: arrive 800ms var(--ease) 60ms both;
}

/* Logo: a soft shadow under the glass drop, so it sits on the page instead of floating flat */
.logo svg, .sidebar__brand svg, .topbar__brand svg { filter: drop-shadow(0 1.5px 1.5px rgba(4, 25, 31, 0.45)); overflow: visible; }