/* Material Design 3 — implemented to spec (m3.material.io).
   Tonal colour roles, type scale, shape scale, elevation, state layers.
   Light + dark schemes; dark via prefers-color-scheme and [data-theme] override. */

:root {
  /* ---- M3 colour roles (light) — green source, gold tertiary (capital side) ---- */
  --md-primary: #2e6c4e;
  --md-on-primary: #ffffff;
  --md-primary-container: #b3f1c9;
  --md-on-primary-container: #00210f;
  --md-secondary: #4e6355;
  --md-on-secondary: #ffffff;
  --md-secondary-container: #d1e8d5;
  --md-on-secondary-container: #0b1f14;
  --md-tertiary: #7a5900;
  --md-on-tertiary: #ffffff;
  --md-tertiary-container: #ffdf9a;
  --md-on-tertiary-container: #261a00;
  --md-error: #ba1a1a;
  --md-on-error: #ffffff;
  --md-error-container: #ffdad6;
  --md-on-error-container: #410002;

  --md-surface: #f6fbf3;
  --md-on-surface: #181d18;
  --md-on-surface-variant: #414941;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #f0f5ed;
  --md-surface-container: #eaefe7;
  --md-surface-container-high: #e4eae1;
  --md-surface-container-highest: #dee4db;
  --md-outline: #717971;
  --md-outline-variant: #c1c9bf;
  --md-inverse-surface: #2d322c;
  --md-inverse-on-surface: #eef2ea;
  --md-inverse-primary: #98d5ae;
  --md-scrim: #000000;

  /* ---- M3 shape scale ---- */
  --md-corner-xs: 4px;
  --md-corner-sm: 8px;
  --md-corner-md: 12px;
  --md-corner-lg: 16px;
  --md-corner-xl: 28px;
  --md-corner-full: 9999px;

  /* ---- M3 elevation (tonal + shadow) ---- */
  --md-elev-1: 0 1px 2px rgba(0,0,0,.30), 0 1px 3px 1px rgba(0,0,0,.15);
  --md-elev-2: 0 1px 2px rgba(0,0,0,.30), 0 2px 6px 2px rgba(0,0,0,.15);
  --md-elev-3: 0 4px 8px 3px rgba(0,0,0,.15), 0 1px 3px rgba(0,0,0,.30);

  /* ---- M3 motion ---- */
  --md-easing-standard: cubic-bezier(.2,0,0,1);
  --md-easing-emphasized: cubic-bezier(.2,0,0,1);
  --md-dur-short: 150ms;
  --md-dur-medium: 250ms;

  /* ---- M3 type scale (Roboto with system fallback) ---- */
  --md-font: "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { color-scheme: dark; } }
:root[data-theme="dark"], :root:not([data-theme="light"]) {
  @media (prefers-color-scheme: dark) {
    --md-primary: #98d5ae; --md-on-primary: #003920;
    --md-primary-container: #14512f; --md-on-primary-container: #b3f1c9;
    --md-secondary: #b5ccba; --md-on-secondary: #213528;
    --md-secondary-container: #374b3e; --md-on-secondary-container: #d1e8d5;
    --md-tertiary: #efc048; --md-on-tertiary: #402d00;
    --md-tertiary-container: #5c4300; --md-on-tertiary-container: #ffdf9a;
    --md-error: #ffb4ab; --md-on-error: #690005;
    --md-error-container: #93000a; --md-on-error-container: #ffdad6;
    --md-surface: #0f150f; --md-on-surface: #dee4db; --md-on-surface-variant: #c1c9bf;
    --md-surface-container-lowest: #0a0f0a; --md-surface-container-low: #181d18;
    --md-surface-container: #1c211b; --md-surface-container-high: #262b25;
    --md-surface-container-highest: #313630;
    --md-outline: #8b938a; --md-outline-variant: #414941;
    --md-inverse-surface: #dee4db; --md-inverse-on-surface: #2d322c; --md-inverse-primary: #2e6c4e;
  }
}
/* Explicit dark override (theme toggle) — wins over the media query. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --md-primary: #98d5ae; --md-on-primary: #003920;
  --md-primary-container: #14512f; --md-on-primary-container: #b3f1c9;
  --md-secondary: #b5ccba; --md-on-secondary: #213528;
  --md-secondary-container: #374b3e; --md-on-secondary-container: #d1e8d5;
  --md-tertiary: #efc048; --md-on-tertiary: #402d00;
  --md-tertiary-container: #5c4300; --md-on-tertiary-container: #ffdf9a;
  --md-error: #ffb4ab; --md-on-error: #690005;
  --md-error-container: #93000a; --md-on-error-container: #ffdad6;
  --md-surface: #0f150f; --md-on-surface: #dee4db; --md-on-surface-variant: #c1c9bf;
  --md-surface-container-lowest: #0a0f0a; --md-surface-container-low: #181d18;
  --md-surface-container: #1c211b; --md-surface-container-high: #262b25;
  --md-surface-container-highest: #313630;
  --md-outline: #8b938a; --md-outline-variant: #414941;
  --md-inverse-surface: #dee4db; --md-inverse-on-surface: #2d322c; --md-inverse-primary: #2e6c4e;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-family: var(--md-font);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
  padding-bottom: env(safe-area-inset-bottom);
  /* No pinch-zoom / double-tap-zoom; keep scrolling. Text is sized large instead. */
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* ---- Type scale ---- */
.md-display-small { font-size: 36px; line-height: 44px; font-weight: 400; letter-spacing: 0; }
.md-headline-small { font-size: 24px; line-height: 32px; font-weight: 400; }
.md-title-large { font-size: 22px; line-height: 28px; font-weight: 400; }
.md-title-medium { font-size: 16px; line-height: 24px; font-weight: 500; letter-spacing: .15px; }
.md-title-small { font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: .1px; }
.md-body-large { font-size: 17px; line-height: 25px; letter-spacing: .5px; }
.md-body-medium { font-size: 15px; line-height: 22px; letter-spacing: .25px; }
.md-body-small { font-size: 13px; line-height: 18px; letter-spacing: .3px; }
.md-label-large { font-size: 15px; line-height: 20px; font-weight: 500; letter-spacing: .1px; }
.md-label-medium { font-size: 13px; line-height: 18px; font-weight: 500; letter-spacing: .5px; }
.md-label-small { font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: .5px; }
.mono { font-family: "Roboto Mono", ui-monospace, Menlo, monospace; font-variant-numeric: tabular-nums; }

/* ---- Top app bar ---- */
.md-top-app-bar {
  position: sticky; top: 0; z-index: 4;
  display: flex; align-items: center; gap: 12px;
  height: 64px; padding: 0 16px calc(0px + env(safe-area-inset-top)) 16px;
  padding-top: env(safe-area-inset-top);
  background: var(--md-surface-container);
  color: var(--md-on-surface);
}
.md-top-app-bar .brand { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.de-brand-text { min-width: 0; }
.de-brand-text > div { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 420px) { .de-install-label { display: none; } }
.md-top-app-bar .logo {
  width: 32px; height: 32px; border-radius: var(--md-corner-sm);
  background: var(--md-primary); color: var(--md-on-primary);
  display: grid; place-items: center; font-weight: 700;
}

/* ---- Layout ---- */
.md-scaffold { max-width: 720px; margin: 0 auto; }
.md-content { padding: 16px; display: grid; gap: 16px; }

/* ---- Tabs (primary) ---- */
.md-tabs { display: flex; background: var(--md-surface-container); border-bottom: 1px solid var(--md-outline-variant); }
.md-tab {
  position: relative; flex: 1; min-height: 48px; border: 0; background: transparent;
  color: var(--md-on-surface-variant); font-family: inherit; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 0 12px; transition: color var(--md-dur-short) var(--md-easing-standard);
}
.md-tab[aria-selected="true"] { color: var(--md-primary); }
.md-tab[aria-selected="true"]::after {
  content: ""; position: absolute; left: 20%; right: 20%; bottom: 0; height: 3px;
  background: var(--md-primary); border-radius: 3px 3px 0 0;
}
.md-tab::before { content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0; transition: opacity var(--md-dur-short); }
.md-tab:hover::before { opacity: .08; }
.md-tab:focus-visible { outline: 3px solid var(--md-primary); outline-offset: -3px; }

/* ---- Cards ---- */
.md-card {
  background: var(--md-surface-container-low);
  border-radius: var(--md-corner-lg);
  padding: 20px;
}
.md-card.filled { background: var(--md-surface-container-highest); }
.md-card.elevated { background: var(--md-surface-container-low); box-shadow: var(--md-elev-1); }

/* ---- Text fields (filled) ---- */
.md-field { display: flex; flex-direction: column; gap: 0; }
.md-field > .label { color: var(--md-on-surface-variant); margin-bottom: 6px; }
.md-textfield {
  display: flex; align-items: center; gap: 4px;
  background: var(--md-surface-container-highest);
  border-radius: var(--md-corner-xs) var(--md-corner-xs) 0 0;
  border-bottom: 2px solid var(--md-on-surface-variant);
  padding: 0 14px; min-height: 56px;
  transition: border-color var(--md-dur-short);
}
.md-textfield:focus-within { border-bottom-color: var(--md-primary); }
.md-textfield .affix { color: var(--md-on-surface-variant); }
.md-textfield input {
  flex: 1; width: 100%; border: 0; background: transparent; outline: none;
  color: var(--md-on-surface); font-family: inherit; font-size: 22px; font-weight: 500;
  padding: 8px 2px;
}

/* ---- Sliders ---- */
input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 4px;
  border-radius: 2px; background: var(--md-secondary-container); margin: 16px 0 4px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--md-primary); cursor: pointer; border: none;
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--md-primary) 12%, transparent);
  transition: box-shadow var(--md-dur-short);
}
input[type="range"]:active::-webkit-slider-thumb { box-shadow: 0 0 0 10px color-mix(in srgb, var(--md-primary) 12%, transparent); }
input[type="range"].tertiary { background: var(--md-tertiary-container); }
input[type="range"].tertiary::-webkit-slider-thumb { background: var(--md-tertiary); }

/* ---- Buttons ---- */
.md-btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 40px; padding: 0 24px; border: 0; border-radius: var(--md-corner-full);
  font-family: inherit; font-size: 14px; font-weight: 500; letter-spacing: .1px; cursor: pointer;
  transition: box-shadow var(--md-dur-short);
}
.md-btn::before { content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0; transition: opacity var(--md-dur-short); }
.md-btn:hover::before { opacity: .08; }
.md-btn:active::before { opacity: .10; }
.md-btn:focus-visible { outline: 3px solid var(--md-primary); outline-offset: 2px; }
.md-btn.filled { background: var(--md-primary); color: var(--md-on-primary); }
.md-btn.tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.md-btn.text { background: transparent; color: var(--md-primary); padding: 0 12px; }
.md-btn.outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }
.md-btn[disabled] { opacity: .38; pointer-events: none; }

/* ---- FAB ---- */
.md-fab {
  position: fixed; right: max(16px, env(safe-area-inset-right)); z-index: 5;
  bottom: calc(16px + env(safe-area-inset-bottom));
  display: inline-flex; align-items: center; gap: 8px;
  height: 56px; padding: 0 20px; border: 0; border-radius: var(--md-corner-lg);
  background: var(--md-tertiary-container); color: var(--md-on-tertiary-container);
  box-shadow: var(--md-elev-3); font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
}
.md-fab:active { box-shadow: var(--md-elev-2); }

/* ---- List / table ---- */
.md-table { width: 100%; border-collapse: collapse; }
.md-table th {
  text-align: right; padding: 8px; border-bottom: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface-variant); font-size: 12px; font-weight: 500;
  letter-spacing: .5px; text-transform: uppercase;
}
.md-table th:first-child, .md-table td:first-child { text-align: left; }
.md-table td { padding: 6px 8px; border-bottom: 1px solid var(--md-surface-container-highest); }
.md-cell {
  width: 100%; text-align: right; background: var(--md-surface-container-highest);
  border: 0; border-radius: var(--md-corner-xs); color: var(--md-on-surface);
  font-family: inherit; font-size: 16px; padding: 8px; min-height: 44px;
}
.md-cell:focus { outline: 2px solid var(--md-primary); }
.md-cell.tk { text-align: left; font-weight: 600; }
.md-table tfoot td { border-top: 2px solid var(--md-outline-variant); font-weight: 700; padding-top: 10px; }

/* chips */
.md-chip {
  display: inline-flex; align-items: center; height: 24px; padding: 0 8px;
  border-radius: var(--md-corner-sm); font-size: 11px; font-weight: 500; letter-spacing: .3px; text-transform: uppercase;
}

/* ---- Icon button (48dp target) ---- */
.md-icon-btn {
  width: 48px; height: 48px; border: 0; background: transparent; color: var(--md-on-surface-variant);
  border-radius: var(--md-corner-full); cursor: pointer; display: grid; place-items: center; position: relative;
}
.md-icon-btn::before { content: ""; position: absolute; inset: 6px; border-radius: 50%; background: currentColor; opacity: 0; transition: opacity var(--md-dur-short); }
.md-icon-btn:hover::before { opacity: .08; }
.md-icon-btn:focus-visible { outline: 3px solid var(--md-primary); outline-offset: -2px; }

/* ---- Bottom sheet (explain-everything) ---- */
.md-scrim {
  position: fixed; inset: 0; background: var(--md-scrim); opacity: 0; z-index: 9;
  visibility: hidden; transition: opacity var(--md-dur-medium);
}
.md-scrim[data-open="1"] { opacity: .4; visibility: visible; }
.md-sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  max-width: 720px; margin: 0 auto;
  background: var(--md-surface-container-high); color: var(--md-on-surface);
  border-radius: var(--md-corner-xl) var(--md-corner-xl) 0 0;
  padding: 12px 20px calc(24px + env(safe-area-inset-bottom));
  transform: translateY(101%); transition: transform var(--md-dur-medium) var(--md-easing-emphasized);
}
.md-sheet[data-open="1"] { transform: translateY(0); }
.md-sheet .grip { width: 32px; height: 4px; border-radius: 2px; background: var(--md-outline-variant); margin: 0 auto 14px; }
.md-sheet h3 { margin: 0 0 4px; }
.md-sheet ol { margin: 8px 0 0; padding-left: 20px; }
.md-sheet ol li { margin: 4px 0; color: var(--md-on-surface-variant); }
.md-sheet .status { margin-top: 12px; color: var(--md-on-surface-variant); }
.md-sheet .key { color: var(--md-primary); font-weight: 500; }

/* ---- Snackbar ---- */
.md-snackbar {
  position: fixed; left: 50%; transform: translateX(-50%) translateY(120%);
  bottom: calc(88px + env(safe-area-inset-bottom)); z-index: 12;
  background: var(--md-inverse-surface); color: var(--md-inverse-on-surface);
  padding: 14px 16px; border-radius: var(--md-corner-xs); box-shadow: var(--md-elev-3);
  font-size: 14px; max-width: 90vw; opacity: 0; visibility: hidden;
  transition: transform var(--md-dur-medium) var(--md-easing-emphasized), opacity var(--md-dur-medium);
}
.md-snackbar[data-open="1"] { transform: translateX(-50%) translateY(0); opacity: 1; visibility: visible; }

/* ---- helpers ---- */
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 560px) { .grid-2 { grid-template-columns: 1fr; } }
.spread { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.muted { color: var(--md-on-surface-variant); }
.primary { color: var(--md-primary); }
.tertiary-text { color: var(--md-tertiary); }
.center { text-align: center; }
.info-dot { color: var(--md-on-surface-variant); }
.scroll-x { overflow-x: auto; }

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