:root {
  --bg-page:      #0a0a0a;
  --bg-surface:   #131313;
  --bg-elevated:  #1a1a1a;
  --bg-deep:      #050505;

  --fg-primary:   #fafafa;
  --fg-muted:     rgba(255,255,255,0.5);
  --fg-faint:     rgba(255,255,255,0.4);
  --fg-hint:      rgba(255,255,255,0.35);

  --fill-hover:   rgba(255,255,255,0.04);
  --fill-active:  rgba(255,255,255,0.06);
  --fill-strong:  rgba(255,255,255,0.08);

  --border-faint: rgba(255,255,255,0.06);
  --border-soft:  rgba(255,255,255,0.08);
  --border-mid:   rgba(255,255,255,0.10);
  --border-focus: rgba(255,255,255,0.18);

  --fg-danger:    rgba(220,80,80,0.85);

  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 10px;
  --r-xl: 14px;

  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', system-ui, sans-serif;
  --font-mono: 'SF Mono', ui-monospace, 'JetBrains Mono', Menlo, monospace;
  --transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg-page);
  color: var(--fg-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ──────────────────────────────────────── */
.nav {
  height: 56px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 0.5px solid var(--border-faint);
  flex-shrink: 0;
}
.nav-left  { display: flex; align-items: center; gap: 28px; }
.nav-right { display: flex; align-items: center; gap: 10px; }

/* ── Logo ─────────────────────────────────────── */
.logo       { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-chip  {
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-elevated);
  border: 0.5px solid var(--border-mid);
  flex-shrink: 0;
}
.logo-chip-sm { width: 24px; height: 24px; border-radius: var(--r-sm); }
.logo-chip-md { width: 44px; height: 44px; border-radius: 11px; }
.logo-chip-lg { width: 56px; height: 56px; border-radius: var(--r-xl); }
.logo-wordmark {
  font-size: 14px; font-weight: 500;
  color: var(--fg-primary); letter-spacing: -0.01em;
}

/* ── Nav pills ────────────────────────────────── */
.nav-pills { display: flex; gap: 4px; }
.nav-pill {
  height: 28px; padding: 0 12px;
  display: flex; align-items: center;
  font-size: 13px; color: var(--fg-muted);
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}
.nav-pill.active { background: var(--fill-active); color: var(--fg-primary); }
.nav-pill:hover:not(.active) { background: var(--fill-hover); color: var(--fg-primary); }

/* ── Avatar ───────────────────────────────────── */
.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: #2a2a2a;
  border: 0.5px solid var(--border-mid);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 500; color: rgba(255,255,255,0.85);
  flex-shrink: 0;
  text-transform: uppercase;
}

/* ── Buttons ──────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; cursor: pointer; font-family: var(--font-sans);
  font-weight: 500; white-space: nowrap;
  transition: opacity 120ms ease, background-color 120ms ease;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--fg-primary); color: var(--bg-page);
  border-radius: var(--r-md);
}
.btn-primary:hover:not(:disabled) { opacity: 0.9; }
.btn-primary:active:not(:disabled) { opacity: 0.8; }

.btn-quiet {
  background: var(--fill-active); color: rgba(255,255,255,0.75);
  border-radius: var(--r-md);
}
.btn-quiet:hover:not(:disabled) { background: var(--fill-strong); }

.btn-h42 { height: 42px; padding: 0 18px; font-size: 14px; }
.btn-h30 { height: 30px; padding: 0 14px; font-size: 12px; border-radius: var(--r-sm); }
.btn-h26 { height: 26px; padding: 0 10px; font-size: 11px; border-radius: var(--r-sm); }
.btn-h32 { height: 32px; padding: 0 12px; font-size: 12px; }

/* ── Inputs ───────────────────────────────────── */
.input {
  width: 100%; height: 42px;
  background: var(--bg-surface);
  border: 0.5px solid var(--border-mid);
  border-radius: var(--r-md);
  padding: 0 14px;
  font-size: 14px; color: var(--fg-primary);
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 120ms ease;
}
.input::placeholder { color: var(--fg-faint); }
.input:focus { border-color: var(--border-focus); }
.input-mono { font-family: var(--font-mono); font-size: 13px; }

/* ── Form field ───────────────────────────────── */
.field { display: flex; flex-direction: column; }
.field-label { font-size: 12px; color: var(--fg-muted); margin-bottom: 6px; }
.field-label-row {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 6px;
}
.field-hint { font-size: 11px; color: var(--fg-hint); }

/* ── Error ────────────────────────────────────── */
.error-msg { font-size: 12px; color: var(--fg-danger); }