/* ═══════════════════════════════════════════════
   MONTH PICKER — Phase 6
   Popover overlay with year sections + month grid
   ═══════════════════════════════════════════════ */

/* ── Backdrop / overlay ─────────────────────── */
#month-picker-popover {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  /* subtle scrim so content below dims */
  background: rgba(0, 0, 0, 0.25);
  align-items: flex-start;  /* desktop: inner floats by JS */
  justify-content: flex-start;
}

#month-picker-popover.open {
  display: flex;
}

/* ── Inner panel ────────────────────────────── */
#month-picker-inner {
  position: absolute;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 260px;
  max-height: 380px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: mp-drop-in 0.18s ease;
}

@keyframes mp-drop-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0)   scale(1);    }
}

/* ── Scrollable body ────────────────────────── */
#month-picker-scroll {
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 12px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Custom scrollbar for desktop */
#month-picker-scroll::-webkit-scrollbar { width: 4px; }
#month-picker-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* ── Year label ─────────────────────────────── */
.mp-year-label {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

/* ── Month grid ─────────────────────────────── */
.mp-month-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

/* ── Month button ───────────────────────────── */
.mp-month-btn {
  padding: 8px 4px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: var(--bg-subtle);
  color: var(--text);
  font-family: var(--font-base);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform 0.1s ease;
  text-align: center;
  line-height: 1;
}

.mp-month-btn:hover:not(:disabled):not(.mp-active) {
  background: var(--border);
  color: var(--text);
  transform: scale(1.04);
}

/* Active (currently selected) month */
.mp-month-btn.mp-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* Future / unavailable months */
.mp-month-btn.mp-disabled {
  opacity: 0.3;
  cursor: not-allowed;
  background: transparent;
}

/* ── Mobile: center the panel ───────────────── */
@media (max-width: 480px) {
  #month-picker-popover {
    align-items: center;
    justify-content: center;
  }

  #month-picker-inner {
    position: relative;   /* override absolute so flexbox centers it */
    top: auto !important;
    left: auto !important;
    width: calc(100vw - 40px);
    max-width: 320px;
    max-height: 70vh;
    animation: mp-drop-in 0.2s ease;
  }
}