/* =========================================
   CCC2026 電子工作班 — Documentation Styles
   ========================================= */

:root {
  --accent: #EF8733;
  --accent-soft: #fff3e9;
  --accent-deep: #c25d1a;
  --ink: #222222;
  --ink-soft: #555555;
  --sub: #888888;
  --bg: #ffffff;
  --bg-section: #f8f9fa;
  --bg-alt: #fafafa;
  --line: #dee2e6;
  --line-strong: #adb5bd;
  --link: #1a73e8;
  --done: #2c9c4a;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

p { margin: 0 0 1rem; max-width: 70ch; }
strong { font-weight: 700; }

/* ============== Container ============== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container.narrow { max-width: 820px; }

/* ============== Site header ============== */
.site-header {
  background: white;
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  white-space: nowrap;
}

.logo .mark {
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

.nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.3rem 0.1rem;
  border-bottom: 2px solid transparent;
}

.nav a:hover { color: var(--ink); text-decoration: none; }
.nav a.active {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

/* ============== Breadcrumb ============== */
.breadcrumb {
  background: var(--bg-section);
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0;
  font-size: 0.85rem;
  color: var(--sub);
}

.breadcrumb a {
  color: var(--ink-soft);
}

.breadcrumb .sep {
  margin: 0 0.4rem;
  color: var(--sub);
}

.breadcrumb .current {
  color: var(--ink);
  font-weight: 600;
}

/* ============== Page title ============== */
.page-title {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}

.page-title h1 {
  font-size: 1.9rem;
  font-weight: 700;
  margin: 0 0 0.7rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-title .lead {
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 0;
  max-width: 70ch;
  line-height: 1.8;
}

/* ============== Page sections (numbered) ============== */
.page-section {
  margin: 0 0 2.8rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.page-section:last-child {
  border-bottom: none;
  margin-bottom: 1rem;
}

.page-section > h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--ink);
  letter-spacing: -0.005em;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.page-section > h2 .num {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0;
  font-size: 1.1rem;
}

.page-section > h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.6rem;
  color: var(--ink);
}

/* ============== Table of contents ============== */
.toc {
  background: var(--bg-section);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.4rem 1rem 1.6rem;
  margin: 1rem 0 2.5rem;
  border-radius: 3px;
}

.toc .toc-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--sub);
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding-left: 1.3rem;
  list-style-type: decimal;
}

.toc li {
  margin: 0.25rem 0;
  font-size: 0.95rem;
}

.toc a {
  color: var(--ink);
}

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

/* ============== Data tables ============== */
table.data {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
  background: white;
}

table.data th,
table.data td {
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

table.data th {
  background: var(--bg-section);
  font-weight: 700;
  font-size: 0.88rem;
  width: 28%;
}

table.data td .note {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 0.25rem;
  line-height: 1.7;
}

table.data td ul {
  margin: 0.3rem 0 0;
  padding-left: 1.3em;
}

table.data td ul li {
  margin: 0.15rem 0;
}

@media (max-width: 600px) {
  table.data,
  table.data tbody,
  table.data tr,
  table.data th,
  table.data td {
    display: block;
    width: 100%;
  }
  table.data th {
    border-bottom: none;
    padding-bottom: 0.4rem;
  }
  table.data td {
    border-top: none;
    padding-top: 0.4rem;
    padding-bottom: 1rem;
  }
}

/* ============== Activity cards (Moodle-like) ============== */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin: 1rem 0;
}

.activity {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: white;
  border: 1px solid var(--line);
  border-radius: 4px;
  align-items: center;
  transition: background 0.15s, border-color 0.15s;
}

.activity:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  text-decoration: none;
}

.activity .icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
}

.activity .body {
  flex: 1;
  min-width: 0;
}

.activity .body h3 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.2rem;
  color: var(--ink);
}

.activity .body p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.65;
}

.activity .meta {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
}

.activity .status {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  background: var(--bg-section);
  color: var(--sub);
  border: 1px solid var(--line);
}

.activity .status.active {
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-color: var(--accent);
}

.activity .status.done {
  background: #e8f5e9;
  color: var(--done);
  border-color: var(--done);
}

@media (max-width: 600px) {
  .activity {
    flex-wrap: wrap;
  }
  .activity .meta {
    flex-direction: row;
    align-items: center;
    margin-left: auto;
  }
}

/* ============== Roles ============== */
.roles-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.8rem;
  margin: 1rem 0;
}

.role-item {
  background: white;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.2rem;
}

.role-item .label {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-deep);
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.role-item h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

.role-item .body {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.75;
  margin: 0;
}

/* ============== Task list ============== */
.task-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  border-top: 1px solid var(--line);
}

.task-list > li {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  gap: 0.8rem;
  padding: 1rem 0.4rem;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.task-list .step-num {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.05rem;
  line-height: 1.4;
}

.task-list .step-content h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
  color: var(--ink);
  line-height: 1.4;
}

.task-list .step-content .body {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.75;
}

.task-list .step-content .body ul {
  margin: 0.3rem 0 0;
  padding-left: 1.3em;
}

.task-list .step-content .body li {
  margin: 0.15rem 0;
}

.task-list .meta-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
}

@media (max-width: 600px) {
  .task-list > li { grid-template-columns: auto 1fr; }
  .task-list .meta-col {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.3rem;
  }
}

/* ============== Tags ============== */
.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--bg-section);
  color: var(--ink-soft);
  font-size: 0.77rem;
  font-weight: 600;
  border-radius: 3px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

.tag.accent {
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-color: var(--accent);
}

.tag.done {
  background: #e8f5e9;
  color: var(--done);
  border-color: var(--done);
}

/* ============== Buttons ============== */
.btn {
  display: inline-block;
  padding: 0.55rem 1.2rem;
  background: var(--accent);
  color: white;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
  margin-top: 0.8rem;
}

.btn:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  text-decoration: none;
}

.btn.secondary {
  background: white;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn.secondary:hover {
  background: var(--bg-section);
}

/* ============== Tabs (Tasks page) ============== */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  background: transparent;
  border: none;
  padding: 0.7rem 1.1rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
}

.tab:hover { color: var(--ink); }

.tab.active {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

.tab .count {
  display: inline-block;
  margin-left: 0.4rem;
  font-size: 0.75rem;
  background: var(--bg-section);
  color: var(--sub);
  padding: 0.05rem 0.45rem;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid var(--line);
}

.tab.active .count {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ============== Purchase tables ============== */
.purchase-section {
  margin-bottom: 2.5rem;
}

.purchase-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.purchase-section h2 .num {
  color: var(--accent);
  font-weight: 700;
}

.purchase-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: white;
}

.purchase-table thead th {
  text-align: left;
  padding: 0.7rem 0.9rem;
  background: var(--bg-section);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--line);
}

.purchase-table tbody td {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  vertical-align: top;
}

.purchase-table tbody tr:nth-child(even) {
  background: var(--bg-alt);
}

.purchase-table .item-name {
  font-weight: 600;
}

.purchase-table .item-name .note {
  display: block;
  font-size: 0.84rem;
  color: var(--ink-soft);
  font-weight: 400;
  margin-top: 0.2rem;
  line-height: 1.6;
}

.purchase-table .qty {
  text-align: center;
  width: 70px;
  white-space: nowrap;
}

.purchase-table .status-cell {
  width: 130px;
  white-space: nowrap;
}

/* Status legend */
.status-legend {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin: 1rem 0 1.5rem;
  padding: 0.7rem 1rem;
  background: var(--bg-section);
  border: 1px solid var(--line);
  border-radius: 3px;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.status-dot::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--sub);
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.todo::before { background: var(--line-strong); }
.status-dot.planned::before { background: var(--accent); }
.status-dot.done::before { background: var(--done); }
.status-dot.have::before { background: var(--ink); }

@media (max-width: 720px) {
  .purchase-table thead { display: none; }
  .purchase-table tbody tr {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.3rem 0.8rem;
    padding: 0.8rem;
  }
  .purchase-table tbody td {
    padding: 0;
    border: none;
  }
  .purchase-table .item-name { grid-column: 1 / -1; }
  .purchase-table .qty { text-align: left; width: auto; }
}

/* ============== Crane SVG (small inline) ============== */
.crane-wrap {
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1;
  position: relative;
  margin: 1rem auto;
}

.crane-svg { width: 100%; height: 100%; display: block; }

.claw-group {
  transform-origin: 150px 60px;
  animation: bob 2.8s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(12px); }
}

/* ============== Hero (small, documentation-style) ============== */
.page-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
}

@media (max-width: 720px) {
  .page-hero { grid-template-columns: 1fr; }
}

/* ============== WIP page ============== */
.wip {
  padding: 2rem 0;
}

.wip h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
}

.wip p {
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
  max-width: 60ch;
}

/* ============== Footer ============== */
.site-footer {
  background: var(--bg-section);
  border-top: 1px solid var(--line);
  padding: 1.4rem 0;
  margin-top: 4rem;
  font-size: 0.84rem;
  color: var(--sub);
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer .credits {
  color: var(--ink-soft);
}

/* ============== Responsive base ============== */
@media (max-width: 720px) {
  body { font-size: 15px; }
  .container { padding: 0 1rem; }
  .nav { gap: 0.9rem; font-size: 0.85rem; }
  .page-title h1 { font-size: 1.55rem; }
  .page-section > h2 { font-size: 1.2rem; }
  .page-title { padding: 1.8rem 0 1.2rem; }
}