/* /programming/webassembly/assets/css/styles.css */

/* =========================
   Theme
========================= */
:root{
  --bg: #f4f6fa;
  --card: #ffffff;

  --primary: #1e3a8a;
  --primary-dark: #172554;
  --primary-soft: #e0e7ff;

  --accent: #38bdf8;
  --accent-soft: rgba(56,189,248,.14);

  --text: #0f172a;
  --muted: #64748b;
  --border: #e5e7eb;

  --good: #16a34a;
  --bad: #dc2626;
  --warn: #f59e0b;

  --radius: 16px;
  --shadow: 0 14px 34px rgba(15,23,42,.10);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: "Noto Sans JP", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

/* =========================
   Header
========================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.header-inner{
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.15rem 1rem .6rem;
  display:flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

.brand{
  display:flex;
  gap: .85rem;
  align-items: center;
  min-width: 0;
}

.brand-badge{
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display:grid;
  place-items:center;
  font-weight: 800;
  letter-spacing: .08em;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 10px 20px rgba(0,0,0,.18);
  flex: 0 0 auto;
}

.brand-text h1{
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: .03em;
}
.brand-text p{
  margin: .18rem 0 0;
  opacity: .9;
  font-size: .92rem;
  max-width: 56ch;
}

.header-actions{
  display:flex;
  gap: .55rem;
  align-items:center;
  flex: 0 0 auto;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: .4rem;
  padding: .6rem .85rem;
  border-radius: 999px;
  text-decoration:none;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.18);
  cursor:pointer;
  user-select:none;
}
.btn.primary{
  background: rgba(56,189,248,.18);
  color:#fff;
}
.btn.ghost{
  background: transparent;
  color:#fff;
}

.breadcrumb{
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem 1rem;
  font-size: .92rem;
  opacity: .92;
}
.breadcrumb a{
  color: rgba(255,255,255,.92);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,.22);
}
.breadcrumb .sep{ opacity: .75; }

/* =========================
   Layout
========================= */
.layout{
  max-width: 1200px;
  margin: 1rem auto 2.2rem;
  padding: 0 1rem;
  display:flex;
  gap: 1rem;
  align-items:flex-start;
}

.sidebar{
  width: 310px;
  position: sticky;
  top: 106px;
}

.content{
  flex: 1;
  min-width: 0;
}

.sidebar-card{
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(148,163,184,.28);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 1rem;
  backdrop-filter: blur(8px);
}
.sidebar-card + .sidebar-card{ margin-top: .9rem; }

.sidebar-title{
  display:flex;
  justify-content: space-between;
  align-items: baseline;
  gap: .6rem;
  margin-bottom: .6rem;
  font-weight: 800;
}

.toc{
  display:flex;
  flex-direction: column;
  gap: .15rem;
}
.toc-link{
  text-decoration: none;
  color: var(--text);
  padding: .55rem .65rem;
  border-radius: 12px;
  border: 1px solid transparent;
}
.toc-link:hover{
  background: var(--primary-soft);
  border-color: rgba(30,58,138,.18);
}
.toc-link.is-active{
  background: rgba(56,189,248,.12);
  border-color: rgba(56,189,248,.35);
  font-weight: 800;
}

.mini .kpi{
  display:grid;
  gap: .15rem;
  margin-bottom: .6rem;
}
.kpi-label{ font-size: .85rem; color: var(--muted); }
.kpi-value{ font-weight: 900; }
.bullet{
  margin: .4rem 0 0;
  padding-left: 1.1rem;
  color: rgba(15,23,42,.86);
}

/* =========================
   Cards / Components
========================= */
.card{
  background: var(--card);
  border: 1px solid rgba(148,163,184,.25);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.05rem 1.2rem;
  margin-bottom: 1rem;
}

.card h2{
  margin: .1rem 0 .6rem;
  font-size: 1.25rem;
  letter-spacing: .02em;
}
.card h3{
  margin: .85rem 0 .4rem;
  font-size: 1.05rem;
}
.card h4{
  margin: .6rem 0 .35rem;
  font-size: 1rem;
}

.muted{ color: var(--muted); }
.small{ font-size: .92rem; }
.mt{ margin-top: 1rem; }

.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
}
.grid3{
  display:grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: .85rem;
}

.info{
  border: 1px solid rgba(148,163,184,.28);
  border-radius: 14px;
  padding: .85rem .9rem;
  background: rgba(30,58,138,.04);
}

.feature{
  border: 1px solid rgba(148,163,184,.28);
  border-radius: 14px;
  padding: .85rem .9rem;
  background: rgba(255,255,255,.7);
}

.callout{
  margin-top: .9rem;
  padding: .85rem .9rem;
  border-radius: 14px;
  border: 1px solid rgba(56,189,248,.35);
  background: var(--accent-soft);
  font-weight: 700;
}
.callout.warn{
  border-color: rgba(245,158,11,.45);
  background: rgba(245,158,11,.12);
}

.tagcard{
  border-radius: 14px;
  padding: .85rem .9rem;
  border: 1px solid rgba(148,163,184,.28);
}
.tagcard.good{
  background: rgba(22,163,74,.08);
  border-color: rgba(22,163,74,.28);
}
.tagcard.bad{
  background: rgba(220,38,38,.07);
  border-color: rgba(220,38,38,.26);
}

.table-wrap{
  overflow:auto;
  border-radius: 14px;
  border: 1px solid rgba(148,163,184,.28);
}
table{
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
th, td{
  padding: .75rem .85rem;
  border-bottom: 1px solid rgba(148,163,184,.22);
  vertical-align: top;
}
thead th{
  background: rgba(30,58,138,.06);
  text-align: left;
  font-weight: 900;
}

.code-card{
  margin-top: .85rem;
  border: 1px solid rgba(148,163,184,.28);
  border-radius: 14px;
  overflow: hidden;
}
.code-head{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: .8rem;
  padding: .65rem .85rem;
  background: rgba(15,23,42,.04);
  border-bottom: 1px solid rgba(148,163,184,.22);
  font-weight: 800;
}
.copy-btn{
  border: 1px solid rgba(148,163,184,.35);
  border-radius: 999px;
  padding: .38rem .7rem;
  background: #fff;
  cursor:pointer;
  font-weight: 800;
}
pre{
  margin: 0;
  padding: .9rem .95rem;
  overflow:auto;
  background: rgba(15,23,42,.03);
}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: .92rem;
}

/* FAQ */
.faq{
  display:grid;
  gap: .55rem;
}
.faq-q{
  width:100%;
  text-align:left;
  padding: .85rem .9rem;
  border-radius: 14px;
  border: 1px solid rgba(148,163,184,.28);
  background: #fff;
  cursor:pointer;
  font-weight: 900;
}
.faq-a{
  border-radius: 14px;
  border: 1px solid rgba(148,163,184,.22);
  background: rgba(30,58,138,.04);
  padding: .85rem .9rem;
}

.links{
  padding-left: 1.1rem;
}
.links a{
  color: var(--primary);
  font-weight: 800;
  text-decoration: none;
  border-bottom: 1px solid rgba(30,58,138,.22);
}

.page-footer{
  margin-top: 1.1rem;
  padding-top: .8rem;
  border-top: 1px dashed rgba(148,163,184,.55);
  color: rgba(15,23,42,.78);
}
.page-footer a{
  color: var(--primary);
  font-weight: 800;
  text-decoration: none;
  border-bottom: 1px solid rgba(30,58,138,.22);
}

/* =========================
   Responsive
========================= */
@media (max-width: 980px){
  .layout{ flex-direction: column; }
  .sidebar{
    width: 100%;
    position: static;
    top: auto;
    display:none;
  }
  .sidebar.is-open{ display:block; }
  .grid3{ grid-template-columns: 1fr; }
  .grid2{ grid-template-columns: 1fr; }
  .header-inner{
    flex-direction: column;
    align-items: flex-start;
  }
}