/* =============================================================================
   LVL2 Primitives — the .lv-* system, rebuilt portable
   Every component reads from --tone-color. Wrap in .tone-* to theme.
   ============================================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--foreground);
  background: var(--background);
  /* Signature bulletin-board background: crosshatch grid only. */
  background-image:
    repeating-linear-gradient(0deg, transparent 0 59px, color-mix(in srgb, var(--grid-tint) 3.2%, transparent) 59px 60px),
    repeating-linear-gradient(90deg, transparent 0 59px, color-mix(in srgb, var(--grid-tint) 3.2%, transparent) 59px 60px);
  min-height: 100vh;
}

/* ─── Type ─────────────────────────────────────────────────────────────── */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 0.92;
  text-transform: uppercase;
  margin: 0;
}
.display.xxl { font-size: clamp(3rem, 7vw, 6.25rem); }
.display.xl  { font-size: clamp(2.5rem, 5vw, 4.5rem); }
.display.lg  { font-size: clamp(2rem, 3.8vw, 3rem); }
.display.md  { font-size: clamp(1.5rem, 2.5vw, 2.1rem); }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--foreground-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}
.kicker.has-dash::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--tone-color, var(--brand-cyan));
}
.kicker.has-slash::before { content: "//"; color: var(--tone-color); letter-spacing: 0; }

.meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--foreground-muted);
}
.meta.is-strong { color: var(--foreground); }

.body { font-family: var(--font-body); line-height: 1.6; color: var(--foreground); }
.body-muted { color: var(--foreground-muted); }

/* ─── Button — .lv-btn ─────────────────────────────────────────────────── */
.lv-btn {
  --lv-btn-bg: transparent;
  --lv-btn-border: var(--tone-border);
  --lv-btn-text: var(--foreground);
  --lv-btn-h: 44px;
  --lv-btn-px: 16px;
  --lv-btn-fs: 12px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--lv-btn-h);
  padding: 0 var(--lv-btn-px);
  border: 2px solid var(--lv-btn-border);
  border-radius: var(--radius-sm);
  background: var(--lv-btn-bg);
  color: var(--lv-btn-text);
  font-family: var(--font-mono);
  font-size: var(--lv-btn-fs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease-out, box-shadow 180ms ease-out, background 180ms, border-color 180ms, color 180ms;
}
.lv-btn:hover:not(:disabled) {
  border-color: var(--tone-color);
  background: color-mix(in srgb, var(--tone-color) 14%, var(--card-bg));
  box-shadow: 3px 3px 0 0 color-mix(in srgb, var(--tone-color) 36%, transparent);
  transform: translate(-1px, -1px);
}
.lv-btn:active:not(:disabled) { transform: translate(0,0); box-shadow: 1px 1px 0 0 var(--tone-shadow); }
.lv-btn.is-solid {
  --lv-btn-bg: var(--tone-color);
  --lv-btn-border: var(--tone-color);
  --lv-btn-text: var(--tone-on-solid);
}
.lv-btn.is-solid:hover:not(:disabled) {
  background: color-mix(in srgb, var(--tone-color) 88%, white);
  border-color: color-mix(in srgb, var(--tone-color) 88%, white);
  color: var(--tone-on-solid);
}
.lv-btn.is-outline { --lv-btn-border: var(--tone-color); --lv-btn-text: var(--tone-color); }
.lv-btn.is-outline:hover:not(:disabled) {
  background: var(--tone-color);
  color: var(--tone-on-solid);
}
.lv-btn.is-ghost { --lv-btn-border: transparent; }
.lv-btn.is-sm { --lv-btn-h: 36px; --lv-btn-px: 12px; --lv-btn-fs: 11px; }
.lv-btn.is-lg { --lv-btn-h: 52px; --lv-btn-px: 22px; --lv-btn-fs: 13px; }
.lv-btn.is-block { display: flex; width: 100%; }
.lv-btn:disabled { opacity: 0.48; cursor: not-allowed; transform: none; box-shadow: none; }

/* ─── Pill — .lv-pill ──────────────────────────────────────────────────── */
.lv-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border: 1px solid color-mix(in srgb, var(--tone-color) 40%, var(--border));
  background: color-mix(in srgb, var(--tone-color) 14%, var(--card-bg));
  color: color-mix(in srgb, var(--tone-color) 88%, var(--foreground));
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.lv-pill.is-solid { background: var(--tone-color); color: var(--tone-on-solid); border-color: var(--tone-color); }
.lv-pill.is-sm { padding: 2px 8px; font-size: 9px; }
.lv-pill .dot { width: 6px; height: 6px; border-radius: 999px; background: var(--tone-color); }
.lv-pill.is-solid .dot { background: var(--tone-on-solid); }

/* ─── Card — .lv-card ──────────────────────────────────────────────────── */
.lv-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 16px 18px;
  background: color-mix(in srgb, var(--card-bg) 92%, transparent);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
  color: var(--foreground);
}
.lv-card--interactive { cursor: pointer; transition: transform 180ms, box-shadow 180ms, border-color 180ms; }
.lv-card--interactive:hover {
  border-color: color-mix(in srgb, var(--tone-color) 62%, var(--border));
  box-shadow: 3px 3px 0 0 var(--tone-shadow), var(--shadow-card);
  transform: translate(-1px,-1px);
}
.lv-card--outlined { background: transparent; border-width: 2px; border-color: var(--tone-border); box-shadow: none; }
.lv-card--muted { border-style: dashed; border-color: var(--border-strong); }

/* ─── Surface — bulletin-board panel ──────────────────────────────────── */
.lv-surface {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid color-mix(in srgb, var(--tone-slate) 20%, transparent);
  background: color-mix(in srgb, var(--surface-1) 72%, transparent);
  box-shadow: 0 14px 40px color-mix(in srgb, var(--foreground) 8%, transparent);
  overflow: hidden;
}
.lv-surface::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 39px, color-mix(in srgb, var(--tone-slate) 10%, transparent) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, color-mix(in srgb, var(--tone-slate) 8%, transparent) 39px 40px);
  opacity: 0.42;
}
.lv-surface > * { position: relative; z-index: 1; }
.lv-surface.has-rail::after {
  content: ""; position: absolute; inset: 0 0 auto; height: 8px;
  background: var(--tone-color); z-index: 1; pointer-events: none;
}

/* ─── Sub-header — view identity/stats strip ─────────────────────────── */
.lv-sub-header {
  position: relative;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 18px 24px;
  background: color-mix(in srgb, var(--tone-color) 6%, var(--card-bg));
  border-bottom: 1px solid color-mix(in srgb, var(--tone-color) 20%, var(--border));
  font-family: var(--font-mono);
}
.lv-sub-header::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 4px;
  background: var(--tone-color);
}
.lv-sub-header__name { font-family: var(--font-display); font-size: 1.5rem; letter-spacing: 0.02em; text-transform: uppercase; color: var(--foreground); }
.lv-sub-header__sep { width: 1px; height: 24px; background: var(--border-strong); opacity: 0.6; }
.lv-sub-header__item { display: flex; flex-direction: column; gap: 2px; }
.lv-sub-header__label { font-size: 9px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--foreground-muted); }
.lv-sub-header__value { font-family: var(--font-display); font-size: 1.1rem; color: var(--foreground); letter-spacing: 0.02em; }
.lv-sub-header__fill { flex: 1; }
.lv-sub-header__actions { display: flex; gap: 8px; }

/* ─── Section head ─────────────────────────────────────────────────────── */
.lv-section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px dashed color-mix(in srgb, var(--tone-color) 30%, var(--border));
  margin-bottom: 20px;
}
.lv-section-head__copy { display: flex; flex-direction: column; gap: 6px; max-width: 56ch; }
.lv-section-head__actions { display: flex; gap: 8px; }

/* ─── Stat card & KPI grid ────────────────────────────────────────────── */
.lv-kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.lv-stat-card {
  position: relative;
  padding: 18px 18px 20px;
  background: color-mix(in srgb, var(--tone-color) 8%, var(--card-bg));
  border: 1px solid color-mix(in srgb, var(--tone-color) 28%, var(--border));
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.lv-stat-card::after {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: var(--tone-color);
}
.lv-stat-card__label { font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--foreground-muted); margin: 0 0 8px; }
.lv-stat-card__value { font-family: var(--font-display); font-size: 2.2rem; line-height: 1; color: var(--foreground); }
.lv-stat-card__delta { margin-top: 6px; font-family: var(--font-mono); font-size: 11px; color: var(--tone-color); letter-spacing: 0.04em; }

/* ─── List row ─────────────────────────────────────────────────────────── */
.lv-list-row {
  display: flex; align-items: center; gap: 12px;
  min-height: 56px;
  padding: 10px 14px;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  text-align: left;
  cursor: pointer;
  transition: transform 180ms, box-shadow 180ms, border-color 180ms, background 180ms;
  font-family: var(--font-body);
  color: var(--foreground);
}
.lv-list-row:hover { border-color: color-mix(in srgb, var(--tone-color) 55%, var(--border)); box-shadow: 3px 3px 0 0 var(--tone-shadow); transform: translate(-1px,-1px); background: color-mix(in srgb, var(--tone-color) 5%, var(--card-bg)); }
.lv-list-row__avatar {
  width: 40px; height: 40px; border-radius: 999px; flex-shrink: 0;
  background: color-mix(in srgb, var(--tone-color) 18%, var(--surface-2));
  border: 2px solid color-mix(in srgb, var(--tone-color) 38%, var(--border));
  display: grid; place-items: center;
  color: var(--tone-color);
  font-family: var(--font-display); font-size: 14px;
}
.lv-list-row__main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.lv-list-row__title { font-weight: 600; font-size: 14px; color: var(--foreground); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lv-list-row__sub { font-family: var(--font-mono); font-size: 11px; color: var(--foreground-muted); letter-spacing: 0.04em; }
.lv-list-row__trail { display: flex; align-items: center; gap: 8px; }

/* ─── Empty state ──────────────────────────────────────────────────────── */
.lv-empty {
  display: grid; place-items: center; text-align: center; gap: 10px;
  padding: 40px 24px;
  border: 2px dashed color-mix(in srgb, var(--tone-color) 38%, var(--border));
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--tone-color) 4%, transparent);
}
.lv-empty__icon { font-size: 36px; color: var(--tone-color); }
.lv-empty__title { font-family: var(--font-display); font-size: 1.4rem; letter-spacing: 0.02em; text-transform: uppercase; }
.lv-empty__body { font-family: var(--font-mono); font-size: 12px; color: var(--foreground-muted); letter-spacing: 0.04em; max-width: 40ch; }

/* ─── Divider ──────────────────────────────────────────────────────────── */
.lv-divider { height: 1px; background: var(--border); margin: 16px 0; }
.lv-divider.is-dashed { background: repeating-linear-gradient(90deg, var(--border-strong) 0 6px, transparent 6px 12px); height: 1px; }

/* ─── Input ────────────────────────────────────────────────────────────── */
.lv-input, .lv-textarea, .lv-select {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--foreground);
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 180ms, box-shadow 180ms;
}
.lv-input:focus, .lv-textarea:focus, .lv-select:focus {
  outline: none;
  border-color: var(--tone-color, var(--brand-cyan));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tone-color, var(--brand-cyan)) 18%, transparent);
}
.lv-input::placeholder { color: var(--foreground-muted); }
.lv-label { display: block; font-family: var(--font-mono); font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--foreground-muted); margin-bottom: 6px; }

/* ─── Layout helpers ───────────────────────────────────────────────────── */
.lv-stack { display: flex; flex-direction: column; gap: 16px; }
.lv-stack.is-tight { gap: 8px; }
.lv-stack.is-loose { gap: 28px; }
.lv-row { display: flex; align-items: center; gap: 12px; }
.lv-row.is-between { justify-content: space-between; }
.lv-row.is-end { justify-content: flex-end; }