/* Classical — design-system tokens and component classes. This file is the source of truth for the system's look; retune it here and see readme.md. */
@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;600&family=Lora:wght@400;600&display=swap");

:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201f1d;
  --color-accent: #b68235;
  --color-accent-2: #ac803e;
  --color-divider: color-mix(in srgb, #201f1d 16%, transparent);

  /* Tonal ramps — generated in OKLCH on one shared lightness scale, so the
     same step of any role matches the others in visual value. */
  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-100: #fff3e4;
  --color-accent-200: #ffe3bf;
  --color-accent-300: #facb8d;
  --color-accent-400: #e1ad66;
  --color-accent-500: #c28d41;
  --color-accent-600: #a06f24;
  --color-accent-700: #7d5411;
  --color-accent-800: #5a3b0a;
  --color-accent-900: #3a270d;

  --color-accent-2-100: #fff3e4;
  --color-accent-2-200: #ffe3be;
  --color-accent-2-300: #f5cd96;
  --color-accent-2-400: #dbaf70;
  --color-accent-2-500: #bc8f4e;
  --color-accent-2-600: #9b7232;
  --color-accent-2-700: #79561f;
  --color-accent-2-800: #573d14;
  --color-accent-2-900: #382810;

  --font-heading: "Cormorant Garamond", system-ui, sans-serif;
  --font-heading-weight: 600;
  /* review round 3: bold retired — semibold is the
     interface headings' ceiling (they need the weight at small sizes); display
     text goes lighter still, to the normal cut (see the deck) */
  --font-body: "Lora", system-ui, sans-serif;

  --space-1: 4.6px;
  --space-2: 9.2px;
  --space-3: 13.8px;
  --space-4: 18.4px;
  --space-6: 27.6px;
  --space-8: 36.8px;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 7px;

  /* Elevation — derived from the ground: soft ink-tinted shadows on a
     light theme, a hairline edge + ambient darkness on a dark one. */
  --shadow-sm: 0 1px 2px color-mix(in srgb, #2d2b2b 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2d2b2b 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2d2b2b 22%, transparent);
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-2);
}

.plate {
  filter: sepia(0.22) saturate(0.82) contrast(1.05);
  box-sizing: border-box;
  border: 6px solid var(--color-surface);
  outline: 1px solid var(--color-divider);
}

/* ══════════════════════════════════════════════════════════════════════════
   Components — built with the tokens above. Plain CSS
   on plain HTML: no JavaScript, no build step. Each class is documented in
   readme.md and demonstrated in foundations/ and components/.
   ══════════════════════════════════════════════════════════════════════ */

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

h1 {
  font-size: 42px;
}

h2 {
  font-size: 32px;
}

h3 {
  font-size: 25px;
}

h4 {
  font-size: 20px;
}

h5 {
  font-size: 16px;
}

h6 {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

a {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

img {
  display: block;
  max-width: 100%;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 11px;
  margin-top: var(--space-1);
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

.text-muted {
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

::selection {
  background: color-mix(in srgb, var(--color-accent) 30%, transparent);
}

/* — rules — */
.hr {
  height: 1px;
  border: 0;
  margin: var(--space-4) 0;
  background: var(--color-divider);
}

/* — buttons — */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 14px;
  line-height: 1.2;
  color: var(--color-text);
  /* matches the .input's 14px —
     the pair sits side by side in sign-up rows */
  background: transparent;
  border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
}

.btn svg {
  display: block;
}

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

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

.btn-primary:hover {
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
}

.btn-primary:active {
  background: color-mix(in srgb, var(--color-accent) 22%, transparent);
}

.btn-secondary {
  border-color: var(--color-divider);
}

.btn-secondary:hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}

.btn-secondary:active {
  background: color-mix(in srgb, var(--color-text) 14%, transparent);
}

.btn-ghost {
  color: var(--color-accent);
  padding-inline: var(--space-1);
}

.btn-ghost:hover {
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.btn-ghost:active {
  background: color-mix(in srgb, var(--color-accent) 18%, transparent);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
}

.btn-block {
  width: 100%;
  margin-top: var(--space-2);
}

/* — forms — */
.field > label {
  display: block;
  font-size: 12px;
  margin-bottom: 5px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}

.input {
  width: 100%;
  min-height: 36px;
  padding: 6px 10px;
  font: inherit;
  font-size: 14px;
  color: var(--color-text);
  caret-color: var(--color-accent);
  background: transparent;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}

.input:hover {
  border-color: color-mix(in srgb, var(--color-text) 45%, transparent);
}

.input:focus-visible {
  border-color: var(--color-accent);
  outline-offset: 0;
}

textarea.input {
  min-height: 90px;
  resize: vertical;
}

.radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
}

.radio input,
.seg-opt input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.radio .dot {
  width: 16px;
  height: 16px;
  flex: none;
  border-radius: 50%;
  border: 1.5px solid var(--color-divider);
}

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

.radio input:checked + .dot {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: inset 0 0 0 4px var(--color-bg);
}

.radio input:focus-visible + .dot {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.seg {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}

.seg-opt {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
}

.seg-opt + .seg-opt {
  border-left: 1px solid var(--color-divider);
}

.seg-opt:has(input:checked) {
  color: var(--color-accent);
  box-shadow: inset 0 0 0 1px var(--color-accent);
}

.seg-opt:not(:has(input:checked)):hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
}

.seg-opt:has(input:focus-visible) {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

/* — cards — */
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-divider);
}

.card-kicker {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.card-title {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 17px;
  line-height: 1.2;
}

.card-body {
  margin: 0;
  font-size: 13px;
  opacity: 0.8;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

.elev-sm {
  box-shadow: var(--shadow-sm);
}

.elev-md {
  box-shadow: var(--shadow-md);
}

.elev-lg {
  box-shadow: var(--shadow-lg);
}

/* — tags — */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: calc(var(--radius-md) * 0.75);
}

.tag-accent {
  background: var(--color-accent-100);
  color: var(--color-accent-800);
}

.tag-accent-2 {
  background: var(--color-accent-2-100);
  color: var(--color-accent-2-800);
}

.tag-neutral {
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
}

.tag-outline {
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

/* — navigation — */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 18px;
  margin-right: auto;
}

.nav a {
  color: inherit;
  text-decoration: none;
  font-size: 14px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--color-accent);
}

/* — tables — */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text) 60%, transparent);
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.table td {
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.table tbody tr:hover {
  background: color-mix(in srgb, var(--color-text) 4%, transparent);
}

/* — dialog — */
.dialog-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-4);
  background: color-mix(in srgb, var(--color-neutral-900) 50%, transparent);
}

.dialog {
  width: min(440px, 100%);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-divider);
}

.dialog-title {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 20px;
}

.dialog-body {
  font-size: 14px;
  opacity: 0.85;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

/* — case1 steps — */
.case1-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-2);
}

.case1-step {
  padding: var(--space-3);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  background-image: radial-gradient(
    200px circle at var(--gx, -50%) var(--gy, -50%),
    color-mix(in srgb, var(--color-accent) 14%, transparent),
    transparent 70%
  );
}

.case1-step-index {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.case1-step-title {
  font-family: var(--font-heading);
  font-size: 17px;
  margin: 0;
}

.case1-step-desc {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.case1-read-path-note {
  font-size: 14px;
  line-height: 1.6;
  margin: var(--space-3) 0 0;
  padding: var(--space-3) var(--space-4);
  border: 1px dashed var(--color-accent);
  border-radius: var(--radius-md);
}

.case1-strong {
  color: var(--ink-accent);
}

.case1-erasure-copy {
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

.case1-heading {
  font-family: var(--font-heading);
  font-size: 18px;
}

.case1-figure-caption {
  font-size: 14px;
  font-style: italic;
  color: var(--muted);
  text-align: center;
}

.axis span {
  white-space: nowrap;
  min-width: 28px;
}

.axis span:first-child {
  transform: none;
}

.axis span:last-child {
  transform: translateX(-100%);
}