/* ET Supercycle Driver-Tree Prototype — shared styles (per STYLE.md) */
:root {
  --bg: #000000;
  --surface-1: #171918;
  --surface-2: #202221;
  --border: #2e3130;
  --text: #ffffff;
  --accent: #97c2e5;
  --accent-deep: #135286;
  --accent-pink: #ffa7b4;
  --accent-warm: #fff0d1;
  --font-sans: "Open Sans", sans-serif;
  --font-serif: "Lora", serif;
  --radius-pill: 2rem;
  --radius-card: 0.5rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 18% -10%, #13528655, transparent 45%),
    radial-gradient(circle at 85% 110%, #7a182633, transparent 50%),
    #000;
}

.page { max-width: 1320px; margin: 0 auto; padding: 3.5rem 2rem 6rem; }

/* ---------- Header ---------- */
.eyebrow {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 3rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.subtitle { opacity: 0.72; max-width: 50rem; margin: 0; }

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.overall {
  background: linear-gradient(135deg, var(--surface-2), var(--surface-1));
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.1rem 1.5rem;
  min-width: 260px;
}
.overall .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.6;
  margin-bottom: 0.35rem;
}
.overall .value {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  line-height: 1.15;
  color: var(--accent-pink);
}
.overall .note { font-size: 0.85rem; opacity: 0.6; margin-top: 0.3rem; }

/* ---------- Nav ---------- */
.protonav { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.protonav a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding: 0.35rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: #ffffff08;
  opacity: 0.7;
  transition: opacity 0.2s, border-color 0.2s;
}
.protonav a:hover { opacity: 1; }
.protonav a.active { opacity: 1; border-color: #97c2e577; color: var(--accent); background: #97c2e510; }

/* ---------- Toolbar & legend ---------- */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.legend-group { margin-bottom: 0.3rem; display: flex; flex-direction: column; gap: 0.4rem; }
.legend { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; font-size: 0.8rem; opacity: 0.85; }
.legend .swatch { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 0.4rem; vertical-align: -1px; }
.legend.dim { opacity: 0.55; font-size: 0.75rem; }

.btn {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  background: #ffffff14;
  border: 1px solid #ffffff40;
  border-radius: var(--radius-pill);
  padding: 0.45rem 1.1rem;
  cursor: pointer;
  transition: opacity 0.25s, transform 0.25s;
}
.btn:hover { opacity: 0.8; transform: translateY(-1px); }

/* Asset-class filter checklist */
.controls { display: flex; flex-direction: column; align-items: flex-end; gap: 0.6rem; }
.filterbar { display: flex; align-items: center; justify-content: flex-end; gap: 0.4rem; flex-wrap: wrap; }
.filterbar .fl-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.55;
  margin-right: 0.5rem;
}
.filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: #ffffff08;
  cursor: pointer;
  user-select: none;
  transition: border-color 0.2s, color 0.2s, background 0.2s, opacity 0.2s;
}
.filter-pill input { position: absolute; opacity: 0; pointer-events: none; }
.filter-pill .check {
  width: 12px; height: 12px;
  border-radius: 3px;
  border: 1px solid #ffffff55;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  line-height: 1;
  color: #000;
}
.filter-pill.active { border-color: #97c2e538; background: #97c2e50d; color: #ffffffcc; }
.filter-pill.active .check { background: #97c2e5a6; border-color: #97c2e566; }
.filter-pill:not(.active) { opacity: 0.45; }

/* ---------- Tree table ---------- */
.tree {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #0a0b0acc;
}
.thead {
  display: grid;
  grid-template-columns: var(--cols);
  gap: 1.25rem;
  padding: 0.8rem 1.25rem;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.65;
}
.row {
  display: grid;
  grid-template-columns: var(--cols);
  gap: 1.25rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #1c1e1d;
  align-items: center;
}
.row:last-child { border-bottom: none; }
.row.hidden { display: none; }
.row.major { background: var(--surface-1); cursor: pointer; }
.row.major:hover { background: var(--surface-2); }
.row.minor { background: #101211; }
.row.minor.clickable { cursor: pointer; }
.row.minor.clickable:hover { background: var(--surface-1); }
.row.event { background: transparent; padding-top: 0.7rem; padding-bottom: 0.7rem; }

/* Column 1: name cell */
.name-cell { display: flex; align-items: flex-start; gap: 0.6rem; min-width: 0; }
.chevron {
  flex: none;
  width: 0.65rem;
  margin-top: 0.45rem;
  opacity: 0.55;
  transition: transform 0.2s;
  font-size: 0.6rem;
}
.row[aria-expanded="false"] .chevron { transform: rotate(-90deg); }
.minor .name-cell { padding-left: 1.4rem; }
.event .name-cell { padding-left: 3.4rem; }
.name-main { min-width: 0; }
.major .name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.minor .name { font-size: 0.95rem; font-weight: 400; opacity: 0.92; }
.event .name { font-size: 0.85rem; font-weight: 400; opacity: 0.8; }
.event .date {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.45;
  margin-bottom: 0.15rem;
}
.tags { display: flex; gap: 0.35rem; margin-top: 0.35rem; flex-wrap: wrap; }
.tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  padding: 0.1rem 0.55rem;
  border: 1px solid var(--border);
  opacity: 0.75;
}
.tag.cat { color: var(--accent); border-color: #97c2e544; opacity: 1; }
.tag.raw { opacity: 0.55; text-transform: none; letter-spacing: 0.02em; }

/* Column: scale (−2 … +2) */
.scale { position: relative; height: 34px; }
.scale .track {
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 2px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, #ffa7b435, #ffffff22 50%, #97c2e535);
  border-radius: 2px;
}
.scale .tick {
  position: absolute;
  top: 50%;
  width: 1px; height: 8px;
  transform: translate(-50%, -50%);
  background: #ffffff2e;
}
.scale .tick.zero { height: 16px; background: #ffffff55; }
.scale .fill {
  position: absolute;
  top: 50%;
  height: 3px;
  transform: translateY(-50%);
  border-radius: 2px;
}
.scale .dot {
  position: absolute;
  top: 50%;
  width: 11px; height: 11px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.event .scale .dot { width: 8px; height: 8px; }
.scale .end {
  position: absolute;
  top: 100%;
  font-size: 0.62rem;
  opacity: 0.4;
  transform: translateY(-4px);
}
.scale .end.min { left: 0; }
.scale .end.max { right: 0; }
.scale .score-num {
  position: absolute;
  top: -3px;
  transform: translateX(-50%);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0;
}

/* Column: impact */
.impact { text-align: center; }
.impact .num {
  display: block;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-warm);
  line-height: 1.1;
}
.impact .lvl {
  display: block;
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.45;
  margin-top: 0.15rem;
}
.impact.zero .num { color: #ffffff59; }
.event .impact .num { font-size: 0.95rem; }

/* Column: rationale */
.rationale { font-size: 0.9rem; line-height: 1.5; opacity: 0.72; }
.event .rationale { font-size: 0.82rem; }

/* Column: assets */
.assets { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.asset.hidden { display: none; }
.asset-none { opacity: 0.35; display: none; }
.assets.empty .asset-none { display: inline; }
.asset {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: #ffffff08;
  white-space: nowrap;
}
.asset .cls { opacity: 0.5; font-weight: 600; letter-spacing: 0.05em; margin-right: 0.3rem; font-size: 0.62rem; }

footer { margin-top: 2rem; font-size: 0.8rem; opacity: 0.45; }
footer a { color: var(--accent); text-decoration: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .page { padding: 2rem 1rem 4rem; }
  h1 { font-size: 2.125rem; }
  .subtitle { font-size: 0.95rem; }

  /* header stacks; the snapshot card goes full-width */
  .header-row { flex-direction: column; align-items: stretch; gap: 1.25rem; margin-bottom: 1.75rem; }
  .overall { min-width: 0; width: 100%; }

  /* toolbar stacks left-aligned */
  .toolbar { flex-direction: column; align-items: stretch; gap: 0.9rem; }
  .legend-group { margin-bottom: 0; }
  .controls { align-items: flex-start; }
  .filterbar { justify-content: flex-start; }
  .btn { padding: 0.4rem 0.95rem; }

  /* tree rows collapse to a single column */
  .thead { display: none; }
  .row { grid-template-columns: 1fr; gap: 0.75rem; padding: 1rem; align-items: start; }
  .scale { max-width: 280px; }
  .impact { text-align: left; }
  .impact .num, .impact .lvl { display: inline; }
  .impact .lvl { margin-left: 0.4rem; }
  .minor .name-cell { padding-left: 1rem; }
  .event .name-cell { padding-left: 2rem; }
  .name-cell, .rationale { overflow-wrap: break-word; }
}