/* KPI Card Component — UI Comprehensive Refactor v2
 * Requires: tokens.css, spacing.css
 *
 * Usage:
 *   <div class="kpi-card kpi-card--blue">
 *     <div class="kpi-card__eyebrow">СООБЩЕНИЯ</div>
 *     <div class="kpi-card__value">
 *       <svg class="icon kpi-card__icon"><use href="#i-message-circle"/></svg>
 *       12,847
 *     </div>
 *     <div class="kpi-card__sub">+3.2% за неделю</div>
 *   </div>
 *
 * Color modifiers: --blue | --green | --yellow | --red
 * Size modifiers:  --mini
 */

.kpi-card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--color-brand-500);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 132px;
  transition: border-left-color 0.15s ease, background 0.15s ease;
}

.kpi-card:hover {
  background: var(--surface-hover);
}

/* ── Eyebrow label ── */
.kpi-card__eyebrow {
  font-size: var(--font-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--text-muted);
  line-height: 1;
}

/* ── Primary value ── */
.kpi-card__value {
  font-size: var(--font-3xl);   /* 36px */
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  line-height: var(--line-tight);
  letter-spacing: var(--tracking-tight);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ── Nested icon (inherits text-secondary from parent wrapper) ── */
.kpi-card__icon {
  color: var(--text-secondary);
  font-size: var(--font-md);    /* 16px relative to icon em sizing */
  flex-shrink: 0;
}

/* ── Sub-label / delta ── */
.kpi-card__sub {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: var(--line-base);
}

/* ── Color modifiers ─────────────────────────────────────────────────────── */
.kpi-card--blue   { border-left-color: var(--color-brand-500); }
.kpi-card--green  { border-left-color: var(--color-success-500); }
.kpi-card--yellow { border-left-color: var(--color-warning-500); }
.kpi-card--red    { border-left-color: var(--color-error-500); }

/* ── Mini variant (contacts page KPI strip) ─────────────────────────────── */
.kpi-card--mini {
  min-height: 80px;
  padding: var(--space-3) var(--space-4);
}

.kpi-card--mini .kpi-card__value {
  font-size: var(--font-2xl);   /* 28px — smaller than full variant's 36px */
}

/* ── Compact variant (density-first dashboard) ──────────────────────────── */
/* SaaS-density: 64-72px min-height, value 20-22px, eyebrow 10px.
   Sized for 8-card hunter-config strip on ≥1280px viewports. */
.kpi-card--compact {
  min-height: 64px;
  padding: var(--space-2) var(--space-3);
  border-left: 1px solid var(--border-subtle);
  gap: var(--space-1);
  justify-content: center;
}

.kpi-card--compact .kpi-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.kpi-card--compact .kpi-card__dot {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  flex-shrink: 0;
  background: var(--color-brand-500);
}

.kpi-card--compact.kpi-card--blue   .kpi-card__dot { background: var(--color-brand-500);   }
.kpi-card--compact.kpi-card--green  .kpi-card__dot { background: var(--color-success-500); }
.kpi-card--compact.kpi-card--yellow .kpi-card__dot { background: var(--color-warning-500); }
.kpi-card--compact.kpi-card--red    .kpi-card__dot { background: var(--color-error-500);   }

.kpi-card--compact .kpi-card__value {
  font-size: var(--font-lg, 1.125rem);   /* 18px — short numerics & text both legible */
  font-weight: var(--weight-semibold, 600);
  letter-spacing: 0;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kpi-card--compact .kpi-card__eyebrow {
  font-size: var(--font-2xs);  /* 11px — was literal 10px; matches .eyebrow-sm token */
  line-height: 1;
}

/* Inline icons inside KPI eyebrow/value should be sized down — they often
   inherit 20-24px from generic .icon rules. Force small. */
.kpi-card--compact .kpi-card__head .icon,
.kpi-card--compact .kpi-card__eyebrow + .icon,
.kpi-card--mini   .kpi-card__head .icon,
.kpi-card--mini   .kpi-card__eyebrow + .icon {
  width: 12px;
  height: 12px;
}

/* Mini variant matches compact behaviour for icon sizing inside the value */
.kpi-card--mini .kpi-card__value .icon,
.kpi-card--compact .kpi-card__value .icon {
  width: 14px;
  height: 14px;
}

/* Narrow modifier — for CONVERSION (% value is shorter than count) */
.kpi-card--narrow { /* width set on grid via stats-grid--compact */ }

/* ── Strip variant (analytics channels KPI, 52px horizontal bar) ────────── */
/* Design decision: inter-cell dividers use box-shadow instead of border-right.
 * The spec says "never border-right" for the hairline between cells. Using
 * box-shadow: inset -1px 0 0 rgba(255,255,255,0.06) renders an identical
 * vertical hairline without the spec-prohibited border-right property and
 * without disturbing flex layout (box-shadow does not affect box model). */
.kpi-card--variant-strip {
  display: flex;
  flex-direction: row;       /* reset base .kpi-card flex-direction: column */
  height: 52px;
  min-height: 52px;
  border-radius: var(--radius-sm);      /* 6px — density surface */
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-left: 1px solid var(--border-subtle); /* reset the 3px coloured left-border from base */
  background: var(--surface-card);
  padding: 0;                           /* cells carry their own padding */
  gap: 0;
  transition: none;
}

/* Remove the default hover that changes the whole card background */
.kpi-card--variant-strip:hover {
  background: var(--surface-card);
}

/* ── Strip cell ── */
.kpi-card--variant-strip .kpi-card__cell {
  flex: 1;
  padding: 0 var(--space-4);            /* 0 16px */
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  min-width: 0;
}

/* Vertical hairline between cells — via box-shadow, never border-right */
.kpi-card--variant-strip .kpi-card__cell:not(:last-child) {
  box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.06);
}

/* ── Strip digit ── */
.kpi-card--variant-strip .kpi-card__value {
  font-size: var(--font-lg);            /* 18px — kpi-number §1 row 5 */
  font-weight: var(--weight-semi);      /* 600 */
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ── Strip label ── */
.kpi-card--variant-strip .kpi-card__eyebrow {
  font-size: var(--font-2xs);  /* 11px — was literal 11px; token-aligned */
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  line-height: 1;
}

/* ── Inline sparkline inside strip cell ── */
/* The sparkline-cell--variant-kpi (48×20) sits below the digit */
.kpi-card--variant-strip .sparkline-cell {
  width: 48px;
  height: 20px;
  margin-top: 2px;
}

/* Inline icons inside strip value: 14×14 per spec (D6) */
.kpi-card--variant-strip .kpi-card__value .icon {
  width: 14px;
  height: 14px;
}

/* ── Stats grid compact layout ──────────────────────────────────────────── */
.stats-grid--compact {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) 0.65fr;
  gap: var(--space-3);
}

@media (max-width: 1024px) {
  .stats-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .stats-grid--compact {
    grid-template-columns: 1fr;
  }
}