/* Material Design 3 inspired tokens & components
   Reference: https://m3.material.io/ */

:root {
  /* Seed: verdant primary (avoid default purple/indigo) */
  --md-sys-color-primary: #1b6b4a;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #a8f2c8;
  --md-sys-color-on-primary-container: #002113;

  --md-sys-color-secondary: #4d6357;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #cfe9d8;
  --md-sys-color-on-secondary-container: #0a1f15;

  --md-sys-color-tertiary: #3b6471;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #bfe9f8;
  --md-sys-color-on-tertiary-container: #001f27;

  --md-sys-color-error: #ba1a1a;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #ffdad6;
  --md-sys-color-on-error-container: #410002;

  --md-sys-color-surface: #f6fbf5;
  --md-sys-color-surface-dim: #d7ddd7;
  --md-sys-color-surface-bright: #f6fbf5;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f0f5ef;
  --md-sys-color-surface-container: #eaefe9;
  --md-sys-color-surface-container-high: #e4eae4;
  --md-sys-color-surface-container-highest: #dee4de;
  --md-sys-color-on-surface: #171d19;
  --md-sys-color-on-surface-variant: #404943;
  --md-sys-color-outline: #707973;
  --md-sys-color-outline-variant: #c0c9c1;
  --md-sys-color-inverse-surface: #2c322e;
  --md-sys-color-inverse-on-surface: #ecf2ec;

  --md-sys-color-warning-container: #ffe08a;
  --md-sys-color-on-warning-container: #261a00;

  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 999px;

  --md-sys-elevation-1: 0 1px 2px rgba(23, 29, 25, 0.16), 0 1px 3px 1px rgba(23, 29, 25, 0.08);
  --md-sys-elevation-2: 0 1px 2px rgba(23, 29, 25, 0.18), 0 2px 6px 2px rgba(23, 29, 25, 0.1);

  --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-duration-short4: 200ms;
  --md-sys-motion-duration-medium2: 300ms;

  --md-ref-typeface-plain: "Roboto", "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", sans-serif;
  --md-ref-typeface-brand: "Roboto", "Noto Sans JP", "Hiragino Sans", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-ref-typeface-plain);
  background: var(--md-sys-color-surface);
  line-height: 1.5;
}

a {
  color: var(--md-sys-color-primary);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  padding: 0.12em 0.4em;
  border-radius: var(--md-sys-shape-corner-extra-small);
}

/* Typography helpers */
.md-label-md {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-sys-color-primary);
}

.md-headline-sm {
  margin: 0;
  font-family: var(--md-ref-typeface-brand);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0;
}

.md-title-md {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.md-body-md {
  margin: 0;
  font-size: 0.95rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.7;
}

/* Top app bar */
.md-top-app-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--md-sys-color-surface) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.md-top-app-bar__inner {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.md-top-app-bar__leading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.md-top-app-bar__mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.md-top-app-bar__icon {
  display: block;
  width: 22px;
  height: 22px;
}

.md-top-app-bar__title {
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.25;
}

.md-top-app-bar__subtitle {
  font-size: 0.8rem;
  color: var(--md-sys-color-on-surface-variant);
}

.md-top-app-bar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Buttons */
.md-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0 1rem;
  border-radius: var(--md-sys-shape-corner-full);
  border: 0;
  text-decoration: none;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    background var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized),
    box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized),
    color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized);
}

.md-btn--text {
  color: var(--md-sys-color-primary);
  background: transparent;
}

.md-btn--text:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
}

.md-btn--tonal {
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
}

.md-btn--tonal:hover {
  box-shadow: var(--md-sys-elevation-1);
}

.md-btn--filled {
  color: var(--md-sys-color-on-primary);
  background: var(--md-sys-color-primary);
}

.md-btn--filled:hover {
  box-shadow: var(--md-sys-elevation-1);
}

/* Layout */
.md-shell {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 2.5rem;
}

.md-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.md-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
}

.md-breadcrumb a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  border-radius: var(--md-sys-shape-corner-extra-small);
}

.md-breadcrumb a:hover {
  text-decoration: underline;
}

.md-breadcrumb .sep {
  opacity: 0.55;
}

.md-status-line {
  font-size: 0.8rem;
  color: var(--md-sys-color-on-surface-variant);
}

.md-status-line.is-error {
  color: var(--md-sys-color-error);
}

.md-surface-card {
  background: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-1);
  overflow: clip;
  animation: md-enter var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized) both;
}

@keyframes md-enter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

#app {
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.md-footer {
  margin-top: 1rem;
  padding: 0.85rem 0.25rem 0;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.8rem;
  line-height: 1.6;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.md-footer__updated {
  letter-spacing: 0.01em;
}

/* Content blocks */
.doc-header,
.index-header,
.md-empty {
  display: grid;
  gap: 0.65rem;
}

.doc-header h1,
.index-header h1,
.md-empty h1,
.empty-state h1 {
  margin: 0;
  font-family: var(--md-ref-typeface-brand);
  font-size: clamp(1.7rem, 3.2vw, 2.2rem);
  font-weight: 500;
  line-height: 1.3;
}

.doc-sub {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--md-sys-color-on-surface-variant);
}

.doc-note,
.index-header p,
.empty-state p,
.md-empty p:not(.md-label-md) {
  margin: 0;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.75;
}

.eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-sys-color-primary);
}

.md-section {
  margin-top: 1.75rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.md-section__title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
}

/* Summary groups as M3 cards */
.summary-group {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem 0.4rem;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-surface-container-low);
}

.summary-group h3 {
  margin: 0 0 0.55rem;
  font-size: 0.98rem;
  font-weight: 500;
}

.group-num {
  color: var(--md-sys-color-primary);
  margin-right: 0.2rem;
}

.summary-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.55rem;
}

.summary-table th,
.summary-table td {
  padding: 0.75rem 0.4rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  vertical-align: middle;
  text-align: left;
}

.summary-table th {
  width: 2.75rem;
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 500;
}

.cond-label {
  width: 48%;
  line-height: 1.5;
  color: var(--md-sys-color-on-surface);
}

.cond-value {
  line-height: 1.5;
}

.code {
  display: inline-grid;
  place-items: center;
  min-width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--md-sys-shape-corner-small);
  background: var(--md-sys-color-surface-container-highest);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
}

/* Chips */
.status,
.md-chip {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 32px;
  padding: 0.25rem 0.75rem;
  border-radius: var(--md-sys-shape-corner-small);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  white-space: pre-wrap;
}

.status-allow {
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
}

.status-deny {
  color: var(--md-sys-color-on-error-container);
  background: var(--md-sys-color-error-container);
}

.status-ask {
  color: var(--md-sys-color-on-warning-container);
  background: var(--md-sys-color-warning-container);
}

.status-required {
  color: var(--md-sys-color-on-tertiary-container);
  background: var(--md-sys-color-tertiary-container);
}

.status-optional,
.status-other,
.status-empty {
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
}

.note-block {
  white-space: pre-wrap;
  line-height: 1.7;
  background: var(--md-sys-color-warning-container);
  color: var(--md-sys-color-on-warning-container);
  padding: 0.85rem 1rem;
  border-radius: var(--md-sys-shape-corner-medium);
}

/* Meta cards */
.meta-grid {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.meta-item {
  margin: 0;
  padding: 1rem;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface-container-low);
}

.meta-item-wide {
  grid-column: 1 / -1;
}

.meta-item dt {
  margin: 0 0 0.35rem;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.meta-item dd {
  margin: 0;
  line-height: 1.7;
  white-space: pre-wrap;
}

.muted {
  color: var(--md-sys-color-on-surface-variant);
}

.raw-license {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow: auto;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  font-size: 0.85rem;
  line-height: 1.65;
  white-space: pre-wrap;
}

/* Index cards */
.license-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.85rem;
  margin-top: 1.35rem;
}

.license-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.15rem 1.2rem;
  text-decoration: none;
  color: inherit;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-surface-container-low);
  transition:
    background var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized),
    box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized),
    transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized);
}

.license-card:hover {
  background: var(--md-sys-color-surface-container-high);
  box-shadow: var(--md-sys-elevation-1);
  transform: translateY(-2px);
}

.license-card:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.card-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  align-self: flex-start;
  min-height: 24px;
  padding: 0 0.55rem;
  border-radius: var(--md-sys-shape-corner-small);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.license-card strong {
  font-size: 1.15rem;
  font-weight: 500;
}

.card-path {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.82rem;
  word-break: break-all;
}

@media (max-width: 720px) {
  .md-top-app-bar__subtitle {
    display: none;
  }

  .meta-grid {
    grid-template-columns: 1fr;
  }

  .cond-label,
  .cond-value,
  .summary-table th,
  .summary-table td {
    display: block;
    width: 100%;
  }

  .summary-table tr {
    display: block;
    padding: 0.65rem 0;
    border-top: 1px solid var(--md-sys-color-outline-variant);
  }

  .summary-table th,
  .summary-table td {
    border: 0;
    padding: 0.2rem 0;
  }

  .summary-table th {
    margin-bottom: 0.15rem;
  }
}