/* ============ Design tokens ============ */
:root {
  --font-display: 'General Sans', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Dark theme (default) */
  --color-bg: #0a0e14;
  --color-bg-elevated: #10151d;
  --color-bg-card: #131a24;
  --color-border: #232b38;
  --color-border-soft: #1a2230;

  --color-text-primary: #e9edf3;
  --color-text-secondary: #9aa6b8;
  --color-text-tertiary: #667289;

  --color-accent: #2dd4c4;
  --color-accent-soft: rgba(45, 212, 196, 0.14);
  --color-accent-strong: #14b8ab;

  --color-success: #35c46a;
  --color-success-soft: rgba(53, 196, 106, 0.14);
  --color-warning: #e0a326;
  --color-warning-soft: rgba(224, 163, 38, 0.15);
  --color-danger: #ef5a6f;
  --color-danger-soft: rgba(239, 90, 111, 0.14);

  --shadow-card: 0 1px 0 rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --color-bg: #f5f6f8;
  --color-bg-elevated: #ffffff;
  --color-bg-card: #ffffff;
  --color-border: #e2e5ea;
  --color-border-soft: #ebedf1;

  --color-text-primary: #12161d;
  --color-text-secondary: #56606f;
  --color-text-tertiary: #8892a0;

  --color-accent: #0f9c8f;
  --color-accent-soft: rgba(15, 156, 143, 0.10);
  --color-accent-strong: #0b8478;

  --color-success: #1a9a4c;
  --color-success-soft: rgba(26, 154, 76, 0.10);
  --color-warning: #b3790f;
  --color-warning-soft: rgba(179, 121, 15, 0.12);
  --color-danger: #d5334b;
  --color-danger-soft: rgba(213, 51, 75, 0.10);

  --shadow-card: 0 1px 2px rgba(20,24,30,0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

.app { min-height: 100vh; display: flex; flex-direction: column; }

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { font-family: var(--font-display); margin: 0; letter-spacing: -0.01em; }

/* ============ Topbar ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-soft);
}
.topbar-left { display: flex; align-items: center; gap: var(--space-3); }
.logo { color: var(--color-accent); flex-shrink: 0; }
.brand { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.brand-sub { font-size: 12px; color: var(--color-text-tertiary); font-family: var(--font-mono); }

.topbar-right { display: flex; align-items: center; gap: var(--space-3); }
.updated-pill {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 5px 10px;
  border-radius: 999px;
}
.theme-toggle {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  cursor: pointer;
  position: relative;
}
.theme-toggle::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--color-text-secondary);
  transition: background 0.2s;
}
.theme-toggle:hover::before { background: var(--color-accent); }

/* ============ Main layout ============ */
.main {
  flex: 1;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-6) var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ============ Stage banner ============ */
.stage-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  background: linear-gradient(135deg, var(--color-accent-soft), transparent 70%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  flex-wrap: wrap;
}
.stage-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.stage-headline {
  font-size: 22px;
  font-weight: 600;
  margin-top: var(--space-2);
  max-width: 620px;
}
.stage-detail {
  margin-top: var(--space-2);
  color: var(--color-text-secondary);
  font-size: 13.5px;
  max-width: 560px;
}
.stage-price {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  min-width: 180px;
}
.price-value { font-family: var(--font-mono); font-size: 30px; font-weight: 600; font-variant-numeric: tabular-nums; }
.price-change { font-family: var(--font-mono); font-size: 12.5px; color: var(--color-text-tertiary); }
.price-change.flat { color: var(--color-text-tertiary); }
.price-meta { font-size: 11.5px; color: var(--color-text-tertiary); font-family: var(--font-mono); }

/* ============ KPI grid ============ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}
.kpi-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-card);
}
.kpi-label { font-size: 12px; color: var(--color-text-secondary); }
.kpi-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-primary);
}
.kpi-unit { font-size: 14px; color: var(--color-text-tertiary); font-weight: 500; }
.kpi-foot { font-size: 11.5px; font-family: var(--font-mono); }
.kpi-foot.positive { color: var(--color-success); }
.kpi-foot.neutral { color: var(--color-text-tertiary); }
.kpi-foot.negative { color: var(--color-danger); }

/* ============ Grid / panels ============ */
.grid-2col {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: var(--space-5);
  align-items: start;
}
.col-stack { display: flex; flex-direction: column; gap: var(--space-5); }

.panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}
.panel-head { display: flex; flex-direction: column; gap: 2px; margin-bottom: var(--space-4); }
.panel-head h2 { font-size: 15.5px; font-weight: 600; }
.panel-sub { font-size: 12px; color: var(--color-text-tertiary); }

/* ============ Pathway stepper ============ */
.pathway { list-style: none; margin: 0; padding: 0; position: relative; }
.step { position: relative; display: flex; gap: var(--space-3); padding-bottom: var(--space-4); }
.step:last-child { padding-bottom: 0; }
.step::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: -4px;
  width: 1.5px;
  background: var(--color-border);
}
.step:last-child::before { display: none; }
.step-dot {
  flex-shrink: 0;
  width: 11px; height: 11px;
  border-radius: 50%;
  margin-top: 3px;
  background: var(--color-border);
  border: 2px solid var(--color-bg-card);
  box-shadow: 0 0 0 1.5px var(--color-border);
  z-index: 1;
}
.step.done .step-dot { background: var(--color-success); box-shadow: 0 0 0 1.5px var(--color-success); }
.step.active .step-dot { background: var(--color-warning); box-shadow: 0 0 0 3px var(--color-warning-soft), 0 0 0 1.5px var(--color-warning); }
.step.pending .step-dot { background: var(--color-border); box-shadow: 0 0 0 1.5px var(--color-border); }
.step.final .step-dot { box-shadow: 0 0 0 1.5px var(--color-danger); }
.step-body { display: flex; flex-direction: column; gap: 2px; }
.step-title { font-size: 13.5px; font-weight: 500; color: var(--color-text-primary); }
.step.pending .step-title { color: var(--color-text-secondary); }
.step-date { font-size: 11.5px; font-family: var(--font-mono); color: var(--color-text-tertiary); }
.step.active .step-date { color: var(--color-warning); }

/* ============ Chart ============ */
.chart-wrap { height: 190px; position: relative; }
.chart-footnote { margin-top: var(--space-3); font-size: 11.5px; color: var(--color-text-tertiary); }
.src-link { font-size: 11.5px; }

/* ============ Watchlist ============ */
.watchlist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.watchlist li { display: flex; align-items: flex-start; gap: var(--space-3); }
.watch-dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; flex-shrink: 0; background: var(--color-border); }
.watch-dot.amber { background: var(--color-warning); }
.watch-dot.red { background: var(--color-danger); }
.watch-title { display: block; font-size: 13px; font-weight: 500; }
.watch-when { display: block; font-size: 11.5px; color: var(--color-text-tertiary); font-family: var(--font-mono); margin-top: 1px; }

/* ============ Timeline ============ */
.timeline { display: flex; flex-direction: column; }
.tl-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-soft);
}
.tl-item:last-child { border-bottom: none; }
.tl-date { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-tertiary); padding-top: 1px; }
.tl-body { display: flex; flex-direction: column; gap: 3px; }
.tl-title { font-size: 13.5px; font-weight: 500; color: var(--color-text-primary); }
.tl-tag {
  display: inline-block;
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 1px 6px;
  border-radius: 4px;
  margin-right: 6px;
  vertical-align: middle;
}
.tl-tag.reg { background: var(--color-accent-soft); color: var(--color-accent); }
.tl-tag.clin { background: var(--color-success-soft); color: var(--color-success); }
.tl-tag.fin { background: var(--color-warning-soft); color: var(--color-warning); }
.tl-desc { font-size: 12.5px; color: var(--color-text-secondary); }
.tl-desc a { color: var(--color-text-tertiary); font-size: 11.5px; }

/* ============ Footer ============ */
.footer { padding-top: var(--space-4); border-top: 1px solid var(--color-border-soft); }
.footer p { font-size: 11.5px; color: var(--color-text-tertiary); max-width: 900px; }

/* ============ Responsive ============ */
@media (max-width: 980px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2col { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .main { padding: var(--space-4); }
  .kpi-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
  .stage-banner { flex-direction: column; align-items: flex-start; }
  .stage-price { align-items: flex-start; }
  .tl-item { grid-template-columns: 1fr; gap: 2px; }
  .topbar { padding: var(--space-3) var(--space-4); gap: var(--space-2); }
  .brand-name { font-size: 14px; white-space: nowrap; }
  .brand-sub { font-size: 10.5px; white-space: nowrap; }
  .updated-pill { font-size: 10px; padding: 4px 8px; white-space: nowrap; }
  .updated-pill .updated-prefix { display: none; }
  .topbar-right { gap: var(--space-2); }
}