/* 受験状況ダッシュボード — Claude Design handoff 準拠
   ink #d8d3c3 / bg #34373b、モノクロ・ドキュメント調 */
:root {
  --bg: #34373b;
  --ink: #d8d3c3;
  --ink-40: rgba(216, 211, 195, 0.4);
  --ink-55: rgba(216, 211, 195, 0.55);
  --ink-60: rgba(216, 211, 195, 0.6);
  --ink-80: rgba(216, 211, 195, 0.8);
  --mono: 'IBM Plex Mono', monospace;
  --jp: 'Zen Kaku Gothic New', sans-serif;
  --num: 'Oswald', sans-serif;
  --display: 'Shippori Antique', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--jp), var(--mono), sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding: 16px;
}
a { color: var(--ink); }
a:hover { color: #fff; }
button:hover { opacity: 0.85; }
input[type="date"] { color-scheme: dark; }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(0.8); opacity: 0.7; cursor: pointer; }

/* ノイズテクスチャ */
.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 40; opacity: 0.055;
  background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20width%3D'240'%20height%3D'240'%3E%3Cfilter%20id%3D'n'%3E%3CfeTurbulence%20type%3D'fractalNoise'%20baseFrequency%3D'0.85'%20numOctaves%3D'2'%2F%3E%3C%2Ffilter%3E%3Crect%20width%3D'240'%20height%3D'240'%20filter%3D'url(%23n)'%2F%3E%3C%2Fsvg%3E");
  background-size: 240px 240px;
}

.mono { font-family: var(--mono); }
.deco-line { font: 400 9.5px var(--mono); letter-spacing: 0.4em; opacity: 0.6; }
.deco-line.spaced { letter-spacing: 0.62em; font-size: 10px; margin-top: 14px; }
.tag {
  border: 1px solid var(--ink-60);
  font: 500 9px var(--mono); letter-spacing: 0.15em;
  padding: 2px 8px; opacity: 0.8; white-space: nowrap;
}

/* ============ 認証ゲート ============ */
.gate {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); padding: 16px;
}
.gate-card {
  border: 1px solid var(--ink-80);
  padding: 40px 44px 34px;
  width: min(420px, 92vw);
  display: flex; flex-direction: column; gap: 12px;
  background: var(--bg);
}
.gate-head { display: flex; align-items: center; gap: 10px; font: 500 11px var(--mono); letter-spacing: 0.08em; }
.gate-head .hex { font-size: 13px; }
.gate-title { font: 400 44px/1.1 var(--display); margin-top: 4px; }
.gate-sub { font: 500 12px var(--jp); letter-spacing: 0.2em; opacity: 0.75; margin-bottom: 14px; }
.gate-card input {
  background: transparent;
  border: 1px solid var(--ink-55);
  color: var(--ink);
  font: 400 13px var(--mono); letter-spacing: 0.1em;
  padding: 10px 12px;
}
.gate-card input:focus { outline: 1px solid var(--ink-80); outline-offset: 1px; }
.gate-card button {
  font: 500 13px var(--jp); letter-spacing: 0.2em;
  padding: 10px; border: 1px solid var(--ink-80);
  background: var(--ink); color: var(--bg); cursor: pointer;
}
.gate-error { font: 400 11px var(--mono); letter-spacing: 0.06em; color: #e8a0a0; }

/* ============ フレーム ============ */
.frame {
  max-width: 1560px; margin: 0 auto;
  border: 1px solid var(--ink-40);
  padding: 30px 34px 22px;
}

/* HEADER */
.header { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font: 500 11px var(--mono); letter-spacing: 0.08em; }
.brand .hex { font-size: 13px; }
.title { font: 400 56px/1.1 var(--display); margin-top: 8px; }
.subtitle { font: 500 12px var(--jp); letter-spacing: 0.2em; opacity: 0.75; margin-top: 8px; }
.header-right { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.header-badges { display: flex; gap: 8px; }
.rev-pill {
  border: 1px solid var(--ink-80);
  font: 600 10px var(--mono); letter-spacing: 0.12em;
  padding: 3px 10px; border-radius: 9px;
  background: transparent; color: var(--ink);
}
.lock-btn { cursor: pointer; opacity: 0.7; }
.header-meta { font: 400 11px var(--mono); letter-spacing: 0.05em; text-align: right; opacity: 0.8; line-height: 1.8; }
.sn { font: 400 9px var(--mono); letter-spacing: 0.3em; opacity: 0.55; }

/* FILTERS */
.filters-box { border: 1px solid var(--ink-80); margin-top: 26px; padding: 16px 22px 20px; position: relative; }
.filters-head { display: flex; justify-content: space-between; align-items: center; }
.filters-row { display: flex; flex-wrap: wrap; gap: 20px 36px; margin-top: 14px; align-items: flex-end; }
.flabel { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.flabel .jp { font: 700 12px var(--jp); }
.flabel .en { font: 400 8.5px var(--mono); letter-spacing: 0.22em; opacity: 0.5; }
.frange { display: flex; align-items: center; gap: 8px; }
.frange input {
  background: transparent; border: 1px solid var(--ink-55); color: var(--ink);
  font-family: var(--mono); font-size: 12px; padding: 7px 10px;
}
.frange .arrow { font: 400 12px var(--mono); opacity: 0.7; }
.btn-row { display: flex; }
.btn-row button {
  font-family: var(--jp), var(--mono), sans-serif; font-size: 12px; font-weight: 500;
  letter-spacing: 0.08em; padding: 8px 16px;
  border: 1px solid var(--ink-80);
  background: transparent; color: var(--ink);
  cursor: pointer; margin-left: -1px;
}
.btn-row button:first-child { margin-left: 0; }
.btn-row button.active { background: var(--ink); color: var(--bg); }
.gran-box { margin-left: auto; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.gran-en { font: 500 10px var(--mono); letter-spacing: 0.15em; opacity: 0.75; }
.gran-jp { font: 400 10px var(--jp); opacity: 0.55; }

/* KPI ROW */
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 20px; }
.kpi { border: 1px solid var(--ink-40); padding: 16px 18px 14px; }
.kpi-head { display: flex; justify-content: space-between; align-items: baseline; }
.kpi-head .jp { font: 700 12px var(--jp); }
.kpi-head .en { font: 400 8.5px var(--mono); letter-spacing: 0.22em; opacity: 0.5; }
.kpi-value { font: 500 44px/1.1 var(--num); letter-spacing: 0.01em; margin-top: 10px; }
.kpi-value .unit { font: 400 13px var(--jp); margin-left: 6px; }
.kpi-delta { display: flex; align-items: center; margin-top: 14px; opacity: 0.8; }
.kpi-delta .tickmark { width: 1px; height: 9px; background: var(--ink-80); }
.kpi-delta .arr { font: 400 10px var(--mono); padding: 0 2px; }
.kpi-delta .rule { flex: 1; height: 1px; background: var(--ink-40); }
.kpi-delta .val { font: 500 10px var(--mono); padding: 0 8px; letter-spacing: 0.06em; white-space: nowrap; }

/* BOXES / CHARTS */
.main-grid { display: grid; grid-template-columns: minmax(0, 7.1fr) minmax(0, 2.9fr); gap: 20px; margin-top: 20px; }
.rate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.right-col { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.box { border: 1px solid var(--ink-40); padding: 16px 22px 14px; min-width: 0; }
.box-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.box-title { display: flex; align-items: baseline; gap: 10px; }
.box-title .jp { font: 700 14px var(--jp); }
.box-title .en { font: 400 9px var(--mono); letter-spacing: 0.28em; opacity: 0.5; }
.box-legend { display: flex; gap: 16px; align-items: center; }
.legend { display: flex; gap: 16px; align-items: center; }
.legend .key { display: flex; align-items: center; gap: 6px; font: 400 11px var(--jp); opacity: 0.85; }
.chart { margin-top: 12px; position: relative; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .empty { font: 400 11px var(--mono); letter-spacing: 0.15em; opacity: 0.5; padding: 40px 0; text-align: center; }

/* 会員比率 */
.member-box { flex: 1; padding: 16px 20px 18px; }
.member-value { font: 500 42px/1.1 var(--num); letter-spacing: 0.01em; margin-top: 12px; }
.member-value .unit { font: 400 13px var(--jp); margin-left: 6px; }
.member-box .deco-line { letter-spacing: 0.1em; font-size: 10px; margin-top: 2px; opacity: 0.55; }
#member-bar { margin-top: 14px; }
#member-bar svg { display: block; width: 100%; height: auto; }
.member-legend { display: flex; justify-content: space-between; margin-top: 10px; flex-wrap: wrap; gap: 6px; }
.member-legend .key { display: flex; align-items: center; gap: 8px; font: 400 11px var(--jp); }
.member-legend svg { display: block; }

/* データソース */
.source-box { padding: 16px 20px 16px; }
.source-body { display: flex; gap: 16px; margin-top: 12px; align-items: flex-start; }
.source-body svg { flex: none; display: block; }
.source-meta { font: 400 10.5px/1.9 var(--mono); letter-spacing: 0.04em; opacity: 0.85; }
.stamp-wrap { margin-top: 12px; }
.stamp {
  border: 1.5px solid rgba(216, 211, 195, 0.85);
  padding: 3px 12px;
  font: 600 10.5px var(--mono); letter-spacing: 0.2em;
  display: inline-block; transform: rotate(-3deg); opacity: 0.9;
}

/* FOOTER */
.footer {
  border-top: 1px dashed var(--ink-40);
  margin-top: 24px; padding-top: 12px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  font: 400 10px var(--mono); letter-spacing: 0.12em; opacity: 0.6;
}

/* ツールチップ */
.tooltip {
  position: fixed; z-index: 60; pointer-events: none;
  background: #2b2e31;
  border: 1px solid var(--ink-55);
  padding: 8px 10px;
  font: 400 11px var(--mono);
  color: var(--ink);
  max-width: 280px;
}
.tooltip .tt-title { font-weight: 600; letter-spacing: 0.08em; margin-bottom: 4px; }
.tooltip .tt-row { display: flex; align-items: center; gap: 8px; opacity: 0.9; }
.tooltip .tt-row svg { flex: none; }
.tooltip .tt-row b { font-weight: 600; margin-left: auto; padding-left: 14px; }

/* レスポンシブ */
@media (max-width: 1100px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .main-grid, .rate-grid { grid-template-columns: 1fr; }
  .title { font-size: 40px; }
}
@media (max-width: 640px) {
  .kpi-row { grid-template-columns: 1fr; }
  .frame { padding: 20px 16px; }
  .header { flex-direction: column; }
  .header-right { align-items: flex-start; }
}