@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Fira+Sans:wght@400;500;600;700&display=swap');

:root {
  --color-primary: #1E40AF;
  --color-on-primary: #FFFFFF;
  --color-secondary: #3B82F6;
  --color-accent: #D97706;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-foreground: #1E293B;
  --color-muted: #E9EEF6;
  --color-muted-fg: #64748B;
  --color-border: #DBEAFE;
  --color-destructive: #DC2626;
  --color-success: #16A34A;
  --radius: 10px;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px;
  --font-body: 'Fira Sans', system-ui, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #60A5FA;
    --color-on-primary: #0B1220;
    --color-secondary: #93C5FD;
    --color-accent: #FBBF24;
    --color-background: #0F172A;
    --color-surface: #1A2436;
    --color-foreground: #E2E8F0;
    --color-muted: #24304A;
    --color-muted-fg: #94A3B8;
    --color-border: #2D3B54;
    --color-destructive: #F87171;
    --color-success: #4ADE80;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-foreground);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }
button, [role="radio"] { cursor: pointer; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Gate ---------- */
.gate {
  min-height: 100dvh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, var(--color-background), var(--color-muted));
  padding: var(--space-4);
}
.gate-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-8) var(--space-6);
  width: 100%; max-width: 360px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
.gate-card h1 { margin: 0 0 4px; font-size: 22px; font-weight: 700; color: var(--color-primary); }
.gate-sub { margin: 0 0 var(--space-6); color: var(--color-muted-fg); font-size: 14px; }
.gate-card label { display: block; text-align: left; font-size: 13px; font-weight: 500; margin-bottom: var(--space-2); }
.gate-card input {
  width: 100%; padding: 12px 14px; font-size: 16px;
  border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-background); color: var(--color-foreground);
  margin-bottom: var(--space-4);
}
.gate-error { color: var(--color-destructive); font-size: 13px; margin-top: var(--space-3); }

/* ---------- Buttons ---------- */
.btn {
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 15px; font-weight: 600;
  transition: background-color 180ms ease, transform 120ms ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); width: 100%; }
.btn-primary:hover { filter: brightness(1.08); }
.icon-btn {
  width: 40px; height: 40px; min-width: 44px; min-height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--color-border); border-radius: 8px;
  color: var(--color-muted-fg);
  transition: background-color 150ms ease, color 150ms ease;
}
.icon-btn:hover { background: var(--color-muted); color: var(--color-primary); }

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 10;
  gap: var(--space-4);
}
.topbar-title { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.topbar-title h1 { font-size: 17px; margin: 0; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-title .muted { font-weight: 400; color: var(--color-muted-fg); }
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--color-accent); flex: none; }

.climate-widget { display: flex; align-items: center; gap: var(--space-4); flex: none; }
.climate-stat { display: flex; flex-direction: column; align-items: center; line-height: 1.1; }
.climate-value { font-family: var(--font-mono); font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; }
.climate-label { font-size: 11px; color: var(--color-muted-fg); }
#climate-spark { display: none; }
@media (min-width: 640px) { #climate-spark { display: block; } }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: calc(100dvh - 57px); }
.sidebar {
  width: 300px; flex: none;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow-y: auto;
  max-height: calc(100dvh - 57px);
}
.sidebar-head { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-4) var(--space-2); }
.sidebar-head h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-muted-fg); margin: 0; }
.batch-list { padding: 0 var(--space-2) var(--space-4); display: flex; flex-direction: column; gap: 2px; }

.batch-item {
  display: flex; flex-direction: column; gap: 2px;
  padding: 10px 12px; border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  text-align: left; width: 100%;
  min-height: 44px;
  transition: background-color 150ms ease;
}
.batch-item:hover { background: var(--color-muted); }
.batch-item.active { background: var(--color-muted); border-color: var(--color-border); }
.batch-item.active .batch-date { color: var(--color-primary); }
.batch-date { font-weight: 600; font-size: 14px; }
.batch-sub { display: flex; align-items: center; gap: var(--space-2); font-size: 12px; color: var(--color-muted-fg); }
.batch-sub .dur { font-family: var(--font-mono); }
.rating-badge { font-size: 11px; color: var(--color-accent); font-weight: 600; }

.main { flex: 1; min-width: 0; padding: var(--space-5); overflow-y: auto; }
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--color-muted-fg); text-align: center; gap: var(--space-3);
  height: 100%; min-height: 300px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}
.card-title { font-size: 15px; font-weight: 600; margin: 0 0 var(--space-4); }

.detail-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: var(--space-4); flex-wrap: wrap; gap: var(--space-2); }
.detail-head h2 { margin: 0; font-size: 20px; }
.detail-meta { color: var(--color-muted-fg); font-size: 13px; font-family: var(--font-mono); }

.chart-wrap { position: relative; height: 320px; }
.events-row { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.event-chip {
  font-family: var(--font-mono); font-size: 12px;
  background: var(--color-muted); color: var(--color-foreground);
  border: 1px solid var(--color-border); border-radius: 999px;
  padding: 4px 10px;
}
.event-chip b { color: var(--color-primary); font-weight: 600; }

.eval-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.eval-field-wide { grid-column: 1 / -1; }
.field-label { display: block; font-size: 13px; font-weight: 500; color: var(--color-muted-fg); margin-bottom: var(--space-2); }

.star-rating { display: flex; gap: 4px; }
.star {
  font-size: 28px; line-height: 1; background: none; border: none; padding: 6px;
  color: var(--color-border); min-width: 44px; min-height: 44px;
  transition: color 150ms ease, transform 120ms ease;
}
.star:hover { transform: scale(1.1); }
.star.on { color: var(--color-accent); }

.defect-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.defect-tag {
  font-size: 13px; padding: 8px 14px; border-radius: 999px;
  border: 1px solid var(--color-border); background: var(--color-background);
  color: var(--color-foreground); min-height: 44px;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}
.defect-tag.on { background: var(--color-destructive); border-color: var(--color-destructive); color: #fff; }

#note-text {
  width: 100%; font-family: var(--font-body); font-size: 15px;
  padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius);
  background: var(--color-background); color: var(--color-foreground);
  resize: vertical; min-height: 80px;
}

.eval-actions { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-4); margin-top: var(--space-5); }
.eval-actions .btn-primary { width: auto; }
.save-status { font-size: 13px; color: var(--color-success); opacity: 0; transition: opacity 200ms ease; }
.save-status.show { opacity: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; max-height: 280px; border-right: none; border-bottom: 1px solid var(--color-border); }
  .eval-grid { grid-template-columns: 1fr; }
  .topbar-title h1 { font-size: 15px; }
}
@media (max-width: 375px) {
  .main { padding: var(--space-3); }
  .chart-wrap { height: 260px; }
}