/* おのじゅんの校務DXカフェ — site layer over the Classical design system. */

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Serif JP", var(--font-body);
  font-weight: 300;
  font-feature-settings: "palt" 1;
  letter-spacing: .04em;
  color: var(--color-text);
  background: #f2efe8;
  position: relative;
}

h1, h2, h3, h4, .card-title, .nav-brand, .btn {
  font-family: "Shippori Mincho", var(--font-heading);
  font-weight: 400;
}

a:hover { color: var(--color-accent-600); }

.btn, .seg-opt, .tag, .nav-brand, nav .lnk { white-space: nowrap; }

.btn-primary { background: rgba(255, 253, 248, .5); }

/* Underline that wipes in from the left on hover. */
.lnk {
  cursor: pointer;
  position: relative;
  color: inherit;
  text-decoration: none;
}
.lnk::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -4px;
  height: 1px;
  background: var(--color-accent);
  transition: right .5s cubic-bezier(.22, .7, .2, 1);
}
.lnk:hover::after { right: 0; }

.tnum { font-variant-numeric: tabular-nums; }

/* ── watercolour ground ─────────────────────────────────────────────────── */

@keyframes om-rule { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes om-tile {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50%      { transform: translate3d(-1.4%, 1%, 0); }
}

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

.defs { position: absolute; }

.page {
  position: relative;
  min-width: 1120px;
  background: #f2efe8;
  overflow: hidden;
}

/* Tiles stack to the full document height so the wash scrolls with the page. */
.wc-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
}
.wc-tile {
  flex: 1 1 0;
  min-height: 0;
  display: block;
  overflow: visible;
  animation: om-tile 72s ease-in-out infinite;
  /* A plain CSS blur, not an SVG <feTurbulence>/<feDisplacementMap> filter:
     iOS Safari frequently fails to paint that filter chain when it sits on
     a <g> inside an animated/transformed SVG, leaving the wash invisible
     there while it renders fine elsewhere. CSS blur has none of that risk. */
  filter: blur(48px);
}

.wc-particles {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 3;
  pointer-events: none;
}

.paper {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: .055;
  mix-blend-mode: multiply;
}

/* ── shared layout ──────────────────────────────────────────────────────── */

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.section { position: relative; }
.section-bleed { position: relative; overflow: hidden; }

.kicker {
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--color-accent-700);
}

.sec-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.sec-head-split {
  justify-content: space-between;
  gap: var(--space-6);
}
.sec-head-split > div {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
}
.sec-title {
  font-size: 26px;
  letter-spacing: .12em;
  margin: 0;
}

main { position: relative; z-index: 1; }

/* ── header ─────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(242, 239, 232, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
}
.site-header .wrap {
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-right: auto;
  font-size: 16px;
  letter-spacing: .08em;
  color: inherit;
  text-decoration: none;
}
.nav-brand svg { flex: none; }
.nav-brand-icon {
  flex: none;
  height: 24px;
  width: auto;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: 13.5px;
  letter-spacing: .08em;
}

/* ── hero ───────────────────────────────────────────────────────────────── */

.hero-coffee {
  position: absolute;
  right: 6%;
  bottom: 36px;
  width: 440px;
  /* The width/height attributes reserve the ratio; height must stay derived
     from it, or the attribute's height wins and stretches the picture. */
  height: auto;
  pointer-events: none;
  opacity: .42;
  mix-blend-mode: multiply;
  z-index: 0;
}
.hero-grid {
  position: relative;
  padding-top: calc(var(--space-8) * 2);
  padding-bottom: calc(var(--space-8) * 1.9);
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: calc(var(--space-8) * 1.2);
  align-items: center;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.hero-rule {
  width: 44px;
  height: 1px;
  background: var(--color-accent);
  display: block;
  transform-origin: left;
  animation: om-rule 1.6s cubic-bezier(.22, .7, .2, 1) both;
}
.hero-eyebrow span:last-child {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--color-accent-700);
  white-space: nowrap;
}
.hero-lede {
  font-size: 15px;
  line-height: 2.4;
  letter-spacing: .05em;
  max-width: 26em;
  margin: 0 0 var(--space-8);
  color: color-mix(in srgb, var(--color-text) 82%, transparent);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.hero-actions .btn {
  font-size: 14.5px;
  padding: var(--space-3) var(--space-6);
  letter-spacing: .1em;
}
.hero-actions .lnk {
  font-size: 13.5px;
  letter-spacing: .08em;
  white-space: nowrap;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.hero-tagline {
  writing-mode: vertical-rl;
  font-size: 29px;
  line-height: 2.4;
  letter-spacing: .14em;
  margin: 0 0 0 auto;
  margin-right: 64px;
  font-weight: 400;
  /* Floor from the mockup; grows so the second line's 「。」 is not clipped. */
  min-height: 430px;
  white-space: nowrap;
}

/* ── きょうのひとやすみ ─────────────────────────────────────────────────── */

.rest-bar {
  position: relative;
  border-top: 1px solid color-mix(in srgb, var(--color-text) 9%, transparent);
}
.rest-bar .wrap {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}
.rest-line {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
}
.rest-label {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--color-accent-700);
  flex: none;
  white-space: nowrap;
}
.rest-sep {
  width: 1px;
  height: 13px;
  background: color-mix(in srgb, var(--color-text) 16%, transparent);
  flex: none;
  display: block;
}
.rest-msg {
  font-family: "Shippori Mincho", var(--font-heading);
  font-size: 15.5px;
  letter-spacing: .06em;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity .8s ease;
}
.rest-greeting {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
  white-space: nowrap;
}

/* ── pick up ────────────────────────────────────────────────────────────── */

.stack {
  padding-top: calc(var(--space-8) * 1.6);
}
.pick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
}
.pick-card {
  position: relative;
  overflow: hidden;
  padding: var(--space-6) var(--space-4);
  border-right: 1px solid color-mix(in srgb, var(--color-text) 9%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
}
.pick-meta {
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--color-accent-700);
  margin-bottom: var(--space-4);
}
.pick-card h3 {
  font-size: 21px;
  letter-spacing: .08em;
  margin: 0 0 var(--space-3);
  line-height: 1.6;
}
.pick-card p {
  font-size: 13px;
  line-height: 2.2;
  letter-spacing: .04em;
  margin: 0 0 var(--space-6);
  color: color-mix(in srgb, var(--color-text) 74%, transparent);
}
.pick-more,
.sec-more {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--color-accent-700);
}
.sec-more { font-size: 13px; }

/* ── category ───────────────────────────────────────────────────────────── */

.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.cat-card {
  position: relative;
  overflow: hidden;
  display: block;
  color: inherit;
  text-decoration: none;
  padding: var(--space-6) var(--space-4) var(--space-6) 0;
}
.cat-num {
  font-family: "Shippori Mincho", var(--font-heading);
  font-size: 30px;
  color: var(--color-accent);
  opacity: .55;
  line-height: 1;
  margin-bottom: var(--space-3);
}
.cat-card h3 {
  font-size: 19px;
  letter-spacing: .08em;
  margin: 0 0 var(--space-3);
  white-space: nowrap;
}
.cat-card p {
  font-size: 13px;
  line-height: 2.2;
  letter-spacing: .04em;
  margin: 0 0 var(--space-4);
  color: color-mix(in srgb, var(--color-text) 74%, transparent);
}
.cat-count {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--color-accent-700);
}

/* ── about ──────────────────────────────────────────────────────────────── */

.about {
  margin-top: calc(var(--space-8) * 1.8);
}
.about .wrap {
  position: relative;
  padding-top: calc(var(--space-8) * 1.6);
  padding-bottom: calc(var(--space-8) * 1.6);
}
.about-grid {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  gap: calc(var(--space-8) * 1.2);
}
.about-motto {
  font-family: "Shippori Mincho", var(--font-heading);
  font-size: 20px;
  line-height: 2.2;
  letter-spacing: .1em;
  margin: 0 0 var(--space-4);
}
.about-rule {
  width: 36px;
  height: 1px;
  background: var(--color-accent);
  display: block;
}
.about-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  font-size: 13.5px;
  line-height: 2.4;
  letter-spacing: .05em;
  text-align: justify;
  color: color-mix(in srgb, var(--color-text) 84%, transparent);
}
.about-cols p { margin: 0 0 var(--space-4); }
.about-cols p:last-child { margin: 0; }

/* ── safety ─────────────────────────────────────────────────────────────── */

.safety { padding-top: calc(var(--space-8) * 1.4); }
.safety-grid {
  display: grid;
  /* ウイルススキャン結果の項目を index.html 側で一時的に非表示にしている
     間は2列。再表示するときは repeat(3, 1fr) に戻す。 */
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
}
.safety-grid > div {
  padding: var(--space-6) var(--space-4);
}
.safety-grid > div:not(:last-child) {
  border-right: 1px solid color-mix(in srgb, var(--color-text) 9%, transparent);
}
.safety-grid h4 {
  font-size: 16px;
  letter-spacing: .08em;
  margin: 0 0 var(--space-3);
}
.safety-grid p {
  font-size: 12.5px;
  line-height: 2.2;
  letter-spacing: .04em;
  margin: 0;
  text-align: justify;
  color: color-mix(in srgb, var(--color-text) 72%, transparent);
}

/* ── request ────────────────────────────────────────────────────────────── */

.request { margin-top: calc(var(--space-8) * 1.6); }
.request .wrap {
  position: relative;
  padding-top: calc(var(--space-8) * 1.6);
  padding-bottom: calc(var(--space-8) * 1.6);
  text-align: center;
}
.request .kicker {
  display: block;
  margin-bottom: var(--space-4);
}
.request h2 {
  font-size: 26px;
  letter-spacing: .12em;
  margin: 0 0 var(--space-4);
  line-height: 1.8;
}
.request p {
  font-size: 13.5px;
  line-height: 2.3;
  letter-spacing: .05em;
  margin: 0 0 var(--space-6);
  color: color-mix(in srgb, var(--color-text) 72%, transparent);
}
.request .btn {
  padding: var(--space-3) var(--space-6);
  letter-spacing: .1em;
}

/* ── tools page ─────────────────────────────────────────────────────────── */

.tools-hero .wrap {
  position: relative;
  padding-top: calc(var(--space-8) * 1.3);
  padding-bottom: var(--space-8);
}
.crumb {
  font-size: 11px;
  letter-spacing: .14em;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
  margin-bottom: var(--space-4);
}
.tools-hero h1 {
  font-size: 36px;
  letter-spacing: .12em;
  margin: 0 0 var(--space-4);
}
.tools-hero p {
  font-size: 14px;
  line-height: 2.3;
  letter-spacing: .05em;
  max-width: 30em;
  margin: 0;
  color: color-mix(in srgb, var(--color-text) 80%, transparent);
}

.filter-bar {
  position: sticky;
  top: 53px;
  z-index: 40;
  background: rgba(242, 239, 232, .88);
  backdrop-filter: blur(12px);
  border-top: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
}
.filter-bar .wrap {
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.filter-opts {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.filter-opt {
  cursor: pointer;
  font-size: 13px;
  letter-spacing: .08em;
  padding: 0 0 3px;
  font-family: inherit;
  font-weight: inherit;
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
  transition: color .3s ease, border-color .3s ease;
}
.filter-opt[aria-pressed="true"] {
  color: var(--color-accent-700);
  border-bottom-color: var(--color-accent);
}
.filter-count {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}

.tools-section { padding-top: var(--space-8); }
.tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
}
.tool-card {
  position: relative;
  overflow: hidden;
  padding: var(--space-6);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent);
}
.tool-card[hidden] { display: none; }
.tool-meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.tool-num {
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--color-accent-700);
}
.tool-kind {
  font-size: 10.5px;
  letter-spacing: .12em;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
}
.tool-cat {
  margin-left: auto;
  font-size: 10.5px;
  letter-spacing: .1em;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
}
.tool-card h3 {
  font-size: 22px;
  letter-spacing: .09em;
  margin: 0 0 var(--space-3);
  line-height: 1.6;
}
.tool-card > p {
  font-size: 13px;
  line-height: 2.25;
  letter-spacing: .04em;
  margin: 0 0 var(--space-6);
  text-align: justify;
  color: color-mix(in srgb, var(--color-text) 76%, transparent);
}
.tool-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.tool-actions .btn { letter-spacing: .08em; }
.tool-howto {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
[data-howto] { cursor: pointer; }
.tool-howto[data-howto]:hover { color: var(--color-accent-700); }

/* — 使い方ダイアログ — */
/* classical.css の .dialog-backdrop に z-index の指定がなく、.site-header(50)や
   .paper(60)より下に沈んでしまうため、ここで最前面になるよう明示する。 */
.dialog-backdrop { z-index: 100; }
.dialog-backdrop[hidden] { display: none; }
/* 使い方ダイアログはスクリーンショットが縦長で、低い画面だと本文ごと
   ビューポートからはみ出すため、ダイアログ自体をスクロール可能にする。 */
.dialog-backdrop .dialog {
  max-height: calc(100vh - var(--space-4) * 2);
  overflow-y: auto;
}
.dialog-body .howto-img {
  display: block;
  max-width: 100%;
  margin: var(--space-3) 0;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.dialog-body ol, .dialog-body ul { margin: var(--space-2) 0; padding-left: 1.3em; }
.dialog-body li { margin-bottom: 4px; }
.dialog-body .howto-note { font-size: 12.5px; opacity: .75; }
.tool-scan {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--color-accent-700);
}
.tool-note {
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: .03em;
  color: color-mix(in srgb, var(--color-text) 45%, transparent);
}

.tools-cta {
  padding-top: calc(var(--space-8) * 1.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}
.tools-cta h3 {
  font-size: 19px;
  letter-spacing: .1em;
  margin: 0 0 var(--space-3);
}
.tools-cta p {
  font-size: 12.5px;
  line-height: 2.1;
  letter-spacing: .05em;
  margin: 0;
  color: color-mix(in srgb, var(--color-text) 68%, transparent);
}
.tools-cta .btn {
  flex: none;
  letter-spacing: .1em;
}

/* ── footer ─────────────────────────────────────────────────────────────── */

.site-footer {
  position: relative;
  z-index: 1;
  overflow: hidden;
  margin-top: calc(var(--space-8) * 1.6);
}
.site-footer > div {
  position: relative;
  border-top: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
}
.footer-grid {
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-8);
}
.footer-brand {
  font-family: "Shippori Mincho", var(--font-heading);
  font-size: 16px;
  letter-spacing: .1em;
  margin-bottom: var(--space-3);
}
.footer-grid > div > p {
  font-size: 12px;
  line-height: 2.1;
  letter-spacing: .04em;
  margin: 0;
  max-width: 20em;
  color: color-mix(in srgb, var(--color-text) 58%, transparent);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: 12.5px;
  letter-spacing: .06em;
}
.footer-col-head {
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--color-accent-700);
}
.footer-legal {
  padding-top: 0;
  padding-bottom: var(--space-8);
  font-size: 11px;
  letter-spacing: .08em;
  color: color-mix(in srgb, var(--color-text) 40%, transparent);
}

/* ── narrow viewports ───────────────────────────────────────────────────────
   The prototype is desktop-only (min-width 1120px). This block keeps the same
   design readable on tablets and phones; delete it to go back to fixed width. */

@media (max-width: 1119px) {
  .page { min-width: 0; }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding-top: calc(var(--space-8) * 1.4);
    padding-bottom: calc(var(--space-8) * 1.4);
  }
  .hero-coffee { width: 300px; right: 0; bottom: 0; opacity: .3; }
  .hero-tagline {
    writing-mode: horizontal-tb;
    min-height: 0;
    margin: 0;
    font-size: 24px;
    line-height: 2;
    white-space: normal;
  }
  .about-grid, .about-cols { grid-template-columns: 1fr; }
  .about-grid { gap: var(--space-8); }
}

@media (max-width: 860px) {
  .pick-grid, .cat-grid, .safety-grid, .tools-grid { grid-template-columns: 1fr; }
  .safety-grid > div:not(:last-child) { border-right: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .site-header .wrap { flex-wrap: wrap; gap: var(--space-3); }
  .site-nav { gap: var(--space-4); font-size: 12.5px; }
  .filter-bar { position: static; }
  .filter-bar .wrap { flex-wrap: wrap; }
  .filter-opts { flex-wrap: wrap; gap: var(--space-4); }
  .tools-cta { flex-direction: column; align-items: flex-start; gap: var(--space-6); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .hero-tagline { font-size: 21px; }
  .hero-coffee { width: 220px; opacity: .22; }
  .tools-hero h1 { font-size: 30px; }
  .sec-title { font-size: 22px; }
  .sec-head-split { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
  /* The message can wrap to several lines on a narrow screen; site.js measures
     the tallest RESTS entry and locks .rest-msg's min-height to it, so the
     8-second rotation never changes the bar's height and shifts the page. */
  .rest-line { flex-wrap: wrap; row-gap: var(--space-2); }
  .rest-sep { display: none; }
  .rest-msg {
    flex-basis: 100%;
    white-space: normal;
    line-height: 1.9;
  }
}