/* ============================================================
   Burns Depression Checklist — design tokens
   ============================================================ */

:root {
  --bg: #f4f2ea;
  --bg-glow-a: #dbeae4;
  --bg-glow-b: #f0e6d6;
  --surface: #fffdf7;
  --surface-sunken: #f6f3e9;
  --text: #1b1f24;
  --text-muted: #5c6470;
  --border: #e5dfd0;
  --border-strong: #d5cdb9;
  --accent: #2c6f68;
  --accent-hover: #235852;
  --accent-soft: #e2efec;
  --on-accent: #ffffff;
  --ring: #2c6f68;
  --shadow-sm: 0 1px 2px rgba(31, 33, 28, .06);
  --shadow-md: 0 12px 32px -18px rgba(31, 33, 28, .32), 0 2px 6px -2px rgba(31, 33, 28, .06);
  --crisis-bg: #fdf1ec;
  --crisis-border: #f0c4b2;
  --crisis-text: #8a3413;

  --band-0: #4a9b6e;
  --band-1: #56a98d;
  --band-2: #c9a227;
  --band-3: #d98324;
  --band-4: #cf5f30;
  --band-5: #b83c3c;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --measure: 46rem;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0e1116;
  --bg-glow-a: #16333048;
  --bg-glow-b: #2a221838;
  --surface: #161b22;
  --surface-sunken: #1c222b;
  --text: #e8eaee;
  --text-muted: #98a1b0;
  --border: #262d38;
  --border-strong: #333c49;
  --accent: #4fd1c5;
  --accent-hover: #6fdcd2;
  --accent-soft: #16302f;
  --on-accent: #06231f;
  --ring: #4fd1c5;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow-md: 0 18px 40px -24px rgba(0, 0, 0, .85), 0 2px 6px -2px rgba(0, 0, 0, .4);
  --crisis-bg: #2a1a16;
  --crisis-border: #55302a;
  --crisis-text: #ffb99e;

  --band-0: #57b37f;
  --band-1: #5fc0a3;
  --band-2: #d9b63c;
  --band-3: #e59440;
  --band-4: #e0714a;
  --band-5: #e05b5b;

  color-scheme: dark;
}

/* ============================================================
   Base
   ============================================================ */

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

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: clamp(.75rem, 2vw, 1.5rem);
  gap: clamp(1rem, 3vw, 1.75rem);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1rem, .96rem + .2vw, 1.075rem);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(58rem 32rem at 12% -12%, var(--bg-glow-a), transparent 70%),
    radial-gradient(46rem 30rem at 92% 8%, var(--bg-glow-b), transparent 68%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
ul,
figure,
table {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

h1 {
  font-size: clamp(1.6rem, 1.25rem + 1.6vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 650;
  text-wrap: balance;
}

a {
  color: var(--accent);
  text-underline-offset: 2px;
  text-decoration-thickness: from-font;
}

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

cite {
  font-style: italic;
}

:where(a, button, input, [tabindex]):focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

.skip-link {
  position: fixed;
  top: .5rem;
  left: 50%;
  translate: -50% -150%;
  z-index: 10;
  padding: .6rem 1rem;
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  transition: translate .15s ease;
}

.skip-link:focus-visible {
  translate: -50% 0;
}

/* ============================================================
   Top bar
   ============================================================ */

.topbar {
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  min-width: 0;
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.brand__text {
  display: grid;
  min-width: 0;
}

.brand__title {
  font-weight: 620;
  font-size: .98rem;
  letter-spacing: -.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__sub {
  font-size: .78rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.icon-button {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease, scale .15s ease;
}

.icon-button:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.icon-button:active {
  scale: .94;
}

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

.icon {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--moon {
  display: none;
}

[data-theme="dark"] .icon--sun {
  display: none;
}

[data-theme="dark"] .icon--moon {
  display: block;
}

/* ============================================================
   Layout & cards
   ============================================================ */

main {
  flex: 1;
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
}

.view {
  display: grid;
  gap: clamp(.75rem, 2vw, 1.15rem);
  animation: view-in .35s ease both;
}

@keyframes view-in {
  from {
    opacity: 0;
    translate: 0 .75rem;
  }
}

.card {
  padding: clamp(1.15rem, .8rem + 1.8vw, 2rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.card--muted {
  background: var(--surface-sunken);
  box-shadow: none;
}

.card__title {
  font-size: 1.05rem;
  font-weight: 620;
  letter-spacing: -.01em;
  margin-bottom: .85rem;
}

.eyebrow {
  font-size: .74rem;
  font-weight: 650;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .6rem;
}

.lede {
  margin-top: .9rem;
  color: var(--text-muted);
  max-width: 38rem;
}

.note {
  margin-top: 1rem;
  font-size: .85rem;
  color: var(--text-muted);
}

/* ============================================================
   Intro
   ============================================================ */

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
}

.fact {
  flex: 1 1 7rem;
  padding: .7rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-sunken);
}

.fact__value {
  display: block;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}

.fact__label {
  display: block;
  font-size: .78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.disclaimer__title {
  font-size: 1rem;
  font-weight: 620;
  margin-bottom: .6rem;
}

.disclaimer p {
  font-size: .92rem;
  color: var(--text-muted);
}

.disclaimer__urgent {
  margin-top: .7rem;
}

/* ============================================================
   Buttons
   ============================================================ */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.5rem;
}

.actions--start {
  margin-top: 1.75rem;
}

.button {
  flex: 1 1 auto;
  min-height: 2.9rem;
  padding: .65rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: .95rem;
  font-weight: 570;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, scale .12s ease, opacity .15s ease;
}

.button:active:not(:disabled) {
  scale: .985;
}

.button--primary {
  background: var(--accent);
  color: var(--on-accent);
}

.button--primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.button--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.button--ghost:hover {
  background: var(--surface-sunken);
}

.button:disabled {
  opacity: .42;
  cursor: not-allowed;
}

.button__meta {
  font-weight: 450;
  opacity: .72;
}

/* ============================================================
   Quiz
   ============================================================ */

.quiz__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .8rem;
}

.chip {
  padding: .28rem .75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .01em;
}

[data-theme="dark"] .chip {
  color: var(--accent-hover);
}

.counter {
  flex: none;
  font-size: .85rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.counter__total {
  opacity: .7;
}

.progress {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  overflow: hidden;
}

.progress__fill {
  display: block;
  height: 100%;
  width: 4%;
  border-radius: inherit;
  background: var(--accent);
  transition: width .35s cubic-bezier(.32, .72, 0, 1);
}

.question {
  margin: 0;
  padding: 0;
  border: 0;
  min-inline-size: 0;
}

.question__legend {
  padding: 0;
  margin-block: clamp(1.35rem, 4vw, 2rem) 1.1rem;
  display: grid;
  gap: .45rem;
}

.question__eyebrow {
  font-size: .82rem;
  color: var(--text-muted);
}

.question__text {
  font-size: clamp(1.25rem, 1.05rem + 1vw, 1.6rem);
  font-weight: 620;
  line-height: 1.28;
  letter-spacing: -.015em;
  text-wrap: pretty;
}

.options {
  display: grid;
  gap: .5rem;
}

.option {
  position: relative;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  cursor: pointer;
  transition: border-color .14s ease, background-color .14s ease, translate .14s ease;
}

.option:hover {
  border-color: var(--border-strong);
  background: var(--surface-sunken);
}

.option:has(:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.option:has(:focus-visible) {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
}

.option__input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option__key {
  flex: none;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface-sunken);
  font-size: .8rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  transition: background-color .14s ease, color .14s ease, border-color .14s ease;
}

.option:has(:checked) .option__key {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.option__label {
  flex: 1;
  font-weight: 500;
}

.option__score {
  flex: none;
  font-size: .8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  opacity: .8;
}

.section-note {
  margin-top: 1.1rem;
  padding: .8rem 1rem;
  border: 1px solid var(--crisis-border);
  border-radius: var(--radius-md);
  background: var(--crisis-bg);
  color: var(--crisis-text);
  font-size: .88rem;
}

.section-note a {
  color: inherit;
  font-weight: 600;
}

.keyboard-hint {
  text-align: center;
  font-size: .8rem;
  color: var(--text-muted);
}

kbd {
  display: inline-block;
  min-width: 1.4rem;
  padding: .1rem .35rem;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface);
  font: inherit;
  font-size: .75rem;
  text-align: center;
}

@media (hover: none) {
  .keyboard-hint {
    display: none;
  }
}

/* ============================================================
   Results
   ============================================================ */

.card--score {
  text-align: center;
}

.score {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: .3rem;
}

.score__value {
  font-size: clamp(3.4rem, 2.4rem + 6vw, 5.5rem);
  font-weight: 680;
  line-height: 1;
  letter-spacing: -.045em;
  font-variant-numeric: tabular-nums;
  color: var(--band-color, var(--accent));
}

.score__max {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.score__band {
  margin-top: .6rem;
  font-size: 1.2rem;
  font-weight: 620;
  letter-spacing: -.01em;
}

.score__blurb {
  margin: .45rem auto 0;
  max-width: 34rem;
  font-size: .92rem;
  color: var(--text-muted);
  text-wrap: pretty;
}

.gauge {
  margin-top: 1.9rem;
  position: relative;
}

.gauge__track {
  display: flex;
  gap: 2px;
  height: 12px;
}

.gauge__segment {
  border-radius: 3px;
  background: var(--seg-color);
  opacity: .3;
  transition: opacity .3s ease;
}

.gauge__segment[data-active="true"] {
  opacity: 1;
}

.gauge__marker {
  position: absolute;
  top: -7px;
  left: 0;
  translate: -50% 0;
  transition: left .5s cubic-bezier(.32, .72, 0, 1);
}

.gauge__marker-dot {
  display: block;
  width: 14px;
  height: 26px;
  border-radius: 999px;
  background: var(--surface);
  border: 3px solid var(--band-color, var(--accent));
  box-shadow: var(--shadow-sm);
}

.gauge__scale {
  display: flex;
  justify-content: space-between;
  margin-top: .5rem;
  font-size: .72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.bands {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
}

.bands th,
.bands td {
  padding: .65rem .9rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.bands thead th {
  font-size: .74rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  background: var(--surface-sunken);
}

.bands tbody tr:last-child :is(th, td) {
  border-bottom: 0;
}

.bands td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  white-space: nowrap;
}

.bands__level {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 500;
}

.bands__level::before {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--band-color);
}

.bands tr[aria-current="true"] {
  background: var(--accent-soft);
}

.bands tr[aria-current="true"] .bands__level {
  font-weight: 650;
}

.bands tr[aria-current="true"] td:last-child {
  color: var(--text);
}

.breakdown {
  display: grid;
  gap: 1.05rem;
}

.breakdown__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .4rem;
}

.breakdown__name {
  font-size: .93rem;
  font-weight: 550;
}

.breakdown__value {
  flex: none;
  font-size: .82rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.breakdown__track {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  overflow: hidden;
}

.breakdown__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width .6s cubic-bezier(.32, .72, 0, 1);
}

.card--crisis {
  border-color: var(--crisis-border);
  background: var(--crisis-bg);
  color: var(--crisis-text);
}

.crisis__title {
  font-size: 1.1rem;
  font-weight: 650;
  margin-bottom: .6rem;
}

.card--crisis p {
  font-size: .93rem;
}

.crisis__list {
  display: grid;
  gap: .4rem;
  margin-top: .9rem;
  font-size: .93rem;
}

.crisis__list li {
  padding-left: 1.1rem;
  position: relative;
}

.crisis__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: currentColor;
  opacity: .55;
}

.card--crisis a {
  color: inherit;
  font-weight: 600;
}

.crisis__foot {
  margin-top: .9rem;
  opacity: .85;
  font-size: .85rem !important;
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
  padding-top: .5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  font-size: .8rem;
  color: var(--text-muted);
}

/* ============================================================
   Preferences
   ============================================================ */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

@media print {

  .topbar,
  .footer,
  .actions,
  .keyboard-hint,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
    padding: 0;
  }

  .card {
    box-shadow: none;
    break-inside: avoid;
  }
}