/* Hallmark · macrostructure: per-page (index: H2 Split Diptych hero / rules: 06 Conversational FAQ / app-guide: 05 Workbench)
 * nav: N1a (3 destinations) · footer: Ft2 Inline single line · theme: Garden · genre: editorial
 * H2 Split knobs: ratio=6/6, right=photo, divider=negative-space
 * F4-esque step knobs (app-guide): numbering=01/02/03, layout=vertical stack, connector=line
 * pre-emit critique: P4 H4 E4 S4 R5 V4
 */

@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; }
body { overflow-x: clip; }

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-sm);
  color: var(--color-ink);
}

h1 { font-size: var(--text-display); line-height: 1.25; font-weight: 900; }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-sm); max-width: var(--measure); }
.lede { font-size: var(--text-md); color: var(--color-muted); }

a {
  color: var(--color-accent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.2em;
}
a:hover { text-decoration-thickness: 2px; }

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

.num { font-family: var(--font-outlier); font-variant-numeric: tabular-nums; }

.container {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

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

/* ---------------------------------------------------------------- */
/* Nav — N1a wordmark + links (3 genuine destinations)               */
/* ---------------------------------------------------------------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklch, var(--color-paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-rule);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: var(--space-sm);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--text-md);
  letter-spacing: -0.01em;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
}
.wordmark span { color: var(--color-accent); }

.site-nav__links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.site-nav__links a {
  color: var(--color-ink);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 700;
  padding-block: var(--space-3xs);
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.site-nav__links a:hover,
.site-nav__links a[aria-current="page"] {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

@media (max-width: 26rem) {
  .site-nav__links { gap: var(--space-sm); }
  .site-nav__links a { font-size: var(--text-xs); }
}

/* ---------------------------------------------------------------- */
/* Footer — Ft2 inline single line                                  */
/* ---------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-rule);
  margin-top: var(--space-3xl);
  padding-block: var(--space-lg);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2xs) var(--space-sm);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.site-footer__inner a { color: var(--color-muted); }
.site-footer__sep { color: var(--color-rule); }

.site-footer__line {
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: none;
}
.site-footer__line:hover { text-decoration: underline; }

/* ---------------------------------------------------------------- */
/* Hero — H2 Split Diptych (index)                                  */
/* ---------------------------------------------------------------- */

.hero {
  padding-block: var(--space-2xl) var(--space-xl);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero h1 { margin-bottom: var(--space-md); overflow-wrap: anywhere; min-width: 0; }

.hero__dates {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-block: var(--space-md) var(--space-lg);
}

.hero__date {
  font-family: var(--font-outlier);
  font-weight: 700;
  font-size: var(--text-md);
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-sm);
}

.hero__photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  min-width: 0;
}
.hero__photo img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 60rem) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__photo { order: -1; aspect-ratio: 16 / 9; }
}

/* ---------------------------------------------------------------- */
/* Day cards (index) — 3日間の流れ                                   */
/* ---------------------------------------------------------------- */

.section { padding-block: var(--space-2xl); }
.section__head { max-width: 40rem; margin-bottom: var(--space-xl); }

.day-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.day-card {
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.day-card__num {
  font-family: var(--font-outlier);
  font-weight: 700;
  font-size: var(--text-2xl);
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-2xs);
}

.day-card__label { font-weight: 700; margin-bottom: var(--space-2xs); }
.day-card__desc { font-size: var(--text-sm); color: var(--color-muted); margin: 0; }

@media (max-width: 60rem) {
  .day-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------- */
/* Quick-nav cards (index)                                           */
/* ---------------------------------------------------------------- */

.nav-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.nav-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-paper);
  transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.nav-card:hover { transform: translateY(-3px); border-color: var(--color-accent); }
.nav-card:hover .nav-card__arrow { transform: translateX(4px); }

.nav-card__label {
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-muted);
  display: block;
  margin-bottom: var(--space-2xs);
}
.nav-card h3 { margin-bottom: var(--space-2xs); color: var(--color-ink); }
.nav-card p { color: var(--color-muted); font-size: var(--text-sm); margin-bottom: var(--space-sm); }
.nav-card__arrow {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 700;
  transition: transform var(--dur-base) var(--ease-out);
}

@media (max-width: 60rem) {
  .nav-cards { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------- */
/* Page header (rules / app-guide)                                   */
/* ---------------------------------------------------------------- */

.page-header {
  padding-block: var(--space-2xl) var(--space-lg);
  border-bottom: 1px solid var(--color-rule);
}
.page-header h1 { font-size: var(--text-3xl); }
.page-header .lede { max-width: 42rem; }

.note {
  font-size: var(--text-xs);
  color: var(--color-muted);
  border-left: 2px solid var(--color-rule);
  padding-left: var(--space-sm);
  max-width: var(--measure);
}

/* ---------------------------------------------------------------- */
/* 06 Conversational FAQ (rules.html)                                */
/* ---------------------------------------------------------------- */

.faq-summary {
  background: var(--color-paper-2);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  max-width: var(--measure);
}
.faq-summary h2 { font-size: var(--text-lg); margin-bottom: var(--space-xs); }

.faq-group { margin-bottom: var(--space-2xl); }
.faq-group__title {
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.faq {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-rule);
}

.faq details {
  border-bottom: 1px solid var(--color-rule);
}

.faq summary {
  cursor: pointer;
  padding-block: var(--space-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-md);
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }

.faq summary::before {
  content: "Q";
  font-family: var(--font-outlier);
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.faq summary .chevron {
  margin-left: auto;
  transition: transform var(--dur-base) var(--ease-out);
  color: var(--color-muted);
  flex-shrink: 0;
}
.faq details[open] summary .chevron { transform: rotate(180deg); }

.faq .answer {
  padding-bottom: var(--space-md);
  padding-left: calc(1ch + var(--space-sm));
  color: var(--color-muted);
}
.faq .answer p:last-child { margin-bottom: 0; }
.faq .answer strong { color: var(--color-ink); }

.callout {
  display: flex;
  gap: var(--space-sm);
  background: var(--color-caution-bg);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-block: var(--space-md);
  max-width: var(--measure);
}
.callout__icon { color: var(--color-caution); flex-shrink: 0; font-size: var(--text-lg); line-height: 1.4; }
.callout p { margin: 0; font-size: var(--text-sm); }
.callout strong { color: var(--color-ink); }
.callout--wide { max-width: none; }

/* ---------------------------------------------------------------- */
/* Value grid — 4色の集め方 (rules.html)                             */
/* ---------------------------------------------------------------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.value-card {
  border: 1px solid var(--color-rule);
  border-top: 3px solid var(--value-hue, var(--color-accent));
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
.value-card--red    { --value-hue: oklch(56% 0.18 25); }
.value-card--blue   { --value-hue: oklch(52% 0.14 250); }
.value-card--yellow { --value-hue: oklch(75% 0.15 90); }
.value-card--pink   { --value-hue: oklch(65% 0.16 350); }

.value-card__color {
  display: inline-block;
  font-family: var(--font-outlier);
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--value-hue, var(--color-accent));
  border: 1px solid var(--value-hue, var(--color-accent));
  border-radius: 999px;
  padding: 0.1em 0.7em;
  margin-bottom: var(--space-sm);
}
.value-card h3 { font-size: var(--text-md); margin-bottom: var(--space-2xs); }
.value-card p { font-size: var(--text-sm); color: var(--color-muted); margin: 0 0 var(--space-2xs); }
.value-card p:last-child { margin-bottom: 0; }

@media (max-width: 60rem) {
  .value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 30rem) {
  .value-grid { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------- */
/* Plain numbered steps (rules.html: スタート・ゴールの手順)          */
/* ---------------------------------------------------------------- */

.steps-plain {
  list-style: none;
  counter-reset: step;
  margin: 0 0 var(--space-md);
  padding: 0;
  max-width: var(--measure);
}
.steps-plain li {
  counter-increment: step;
  position: relative;
  padding-left: 2.6em;
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
}
.steps-plain li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.8em;
  height: 1.8em;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-outlier);
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--color-accent-ink);
  background: var(--color-accent);
  border-radius: 50%;
}
.steps-plain strong { color: var(--color-ink); }

/* ---------------------------------------------------------------- */
/* 05 Workbench — step sequence (app-guide.html)                    */
/* ---------------------------------------------------------------- */

.steps { border-top: 1px solid var(--color-rule); }

.step {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 20rem);
  gap: var(--space-xl);
  align-items: start;
  padding-block: var(--space-2xl);
  border-bottom: 1px solid var(--color-rule);
}

.step__num {
  font-family: var(--font-outlier);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 700;
  display: block;
  margin-bottom: var(--space-2xs);
}

.step h3 { font-size: var(--text-xl); margin-bottom: var(--space-sm); }
.step p { color: var(--color-muted); }
.step ul { padding-left: 1.2em; color: var(--color-muted); margin: 0 0 var(--space-sm); }
.step li { margin-bottom: var(--space-3xs); }

.step__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-rule);
  min-width: 0;
}
.step__media img { width: 100%; }
.step__media--pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xs);
  border: none;
  border-radius: 0;
}
.step__media--pair figure {
  margin: 0;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-width: 0;
}

@media (max-width: 60rem) {
  .step { grid-template-columns: 1fr; }
  .step__media { max-width: 22rem; }
}

/* ---------------------------------------------------------------- */
/* Course map link (schedule.html)                                   */
/* ---------------------------------------------------------------- */

.map-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  background: var(--color-paper-2);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.map-link:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.map-link:hover .map-link__arrow { transform: translateX(4px); }

.map-link__icon { font-size: var(--text-2xl); line-height: 1; flex-shrink: 0; }

.map-link__body { display: flex; flex-direction: column; gap: var(--space-3xs); min-width: 0; }
.map-link__body strong { color: var(--color-ink); font-size: var(--text-md); }
.map-link__body span { color: var(--color-muted); font-size: var(--text-sm); }

.map-link__arrow {
  margin-left: auto;
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease-out);
}

@media (max-width: 30rem) {
  .map-link { align-items: flex-start; }
}

/* ---------------------------------------------------------------- */
/* Course table (schedule.html) — F3 tabular spec sheet              */
/* ---------------------------------------------------------------- */

.table-wrap {
  overflow-x: auto;
  margin-bottom: var(--space-2xl);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
}

.course-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 40rem;
}

.course-table th,
.course-table td {
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-rule);
  vertical-align: top;
}

.course-table thead th {
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-muted);
  background: var(--color-paper-2);
  white-space: nowrap;
}

.course-table tbody tr:last-child td { border-bottom: none; }
.course-table td.num { font-weight: 700; }
.course-table .course-name { font-weight: 700; color: var(--color-ink); }

/* ---------------------------------------------------------------- */
/* Day blocks (schedule.html)                                        */
/* ---------------------------------------------------------------- */

.day-block {
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-xl);
}

.day-block__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-rule);
}

.day-block__date {
  font-family: var(--font-outlier);
  font-weight: 700;
  color: var(--color-accent);
  font-size: var(--text-sm);
}

.day-block__name { font-size: var(--text-lg); margin: 0; }

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline li {
  display: grid;
  grid-template-columns: 7rem 1fr auto;
  gap: var(--space-sm);
  align-items: baseline;
  padding-block: var(--space-sm);
  border-bottom: 1px dashed var(--color-rule);
}
.timeline li:last-child { border-bottom: none; }

.timeline__time {
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.timeline__body strong { display: block; color: var(--color-ink); }
.timeline__body span { font-size: var(--text-sm); color: var(--color-muted); }

.timeline__pt {
  font-family: var(--font-outlier);
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
}

@media (max-width: 40rem) {
  .timeline li { grid-template-columns: 1fr; gap: var(--space-3xs); }
  .timeline__pt { justify-self: start; }
}

/* ---------------------------------------------------------------- */
/* Reduced motion                                                    */
/* ---------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}