/* ═══════════════════════════════════════════════════════════════
   SKU View V2 — Component Styles
   Design system: spec/design_system/design-system.md
   All colors use DS CSS variables with hex fallbacks.
   ═══════════════════════════════════════════════════════════════ */

/* ── Page ── */
.skv-page { max-width: 1500px; margin: 0 auto; padding: 28px 24px; }

/* ── Typography (DS Type Scale) ── */
.skv-page-title { font-size: 22px; font-weight: 700; }
.skv-section-title { font-size: 14px; font-weight: 700; }
.skv-card-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.skv-table-header { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--light, #b0aead); }
.skv-micro-label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.skv-section-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted, #8a8a8a); margin-bottom: 8px; }
.skv-cell { font-size: 12px; }
.skv-cell-bold { font-size: 12px; font-weight: 700; }
.skv-mono { font-family: 'JetBrains Mono', monospace; }
.skv-text-muted { font-size: 12px; color: var(--muted, #8a8a8a); }
.skv-text-muted-sm { font-size: 11px; color: var(--muted, #8a8a8a); }
.skv-text-caption { font-size: 10px; color: var(--muted, #8a8a8a); }

/* ── Metric Values (DS Hero/Large Metric) ── */
.skv-hero-value { font-size: 32px; font-weight: 800; line-height: 1.1; }
.skv-large-value { font-size: 28px; font-weight: 800; }
.skv-medium-value { font-size: 20px; font-weight: 800; }

/* ── Colors (DS Semantic) ── */
.skv-c-ink { color: var(--ink, #1a1a1a); }
.skv-c-muted { color: var(--muted, #8a8a8a); }
.skv-c-light { color: var(--light, #b0aead); }
.skv-c-accent { color: var(--accent, #e54d2e); }
.skv-c-red { color: var(--red, #dc2626); }
.skv-c-green { color: var(--green, #16a34a); }
.skv-c-amber { color: var(--amber, #d97706); }
.skv-c-blue { color: var(--blue, #3b82f6); }
.skv-c-purple { color: var(--purple, #7c3aed); }
.skv-c-orange { color: var(--orange, #ea580c); }

/* ── Layout Helpers ── */
.skv-flex { display: flex; }
.skv-flex-center { display: flex; align-items: center; }
.skv-flex-between { display: flex; align-items: center; justify-content: space-between; }
.skv-flex-col { display: flex; flex-direction: column; }
.skv-gap-4 { gap: 4px; }
.skv-gap-6 { gap: 6px; }
.skv-gap-8 { gap: 8px; }
.skv-gap-10 { gap: 10px; }
.skv-gap-12 { gap: 12px; }
.skv-gap-14 { gap: 14px; }
.skv-gap-16 { gap: 16px; }
.skv-text-right { text-align: right; }
.skv-text-center { text-align: center; }
.skv-mb-2 { margin-bottom: 2px; }
.skv-mb-3 { margin-bottom: 3px; }
.skv-mb-4 { margin-bottom: 4px; }
.skv-mb-6 { margin-bottom: 6px; }
.skv-mb-8 { margin-bottom: 8px; }
.skv-mb-10 { margin-bottom: 10px; }
.skv-mb-12 { margin-bottom: 12px; }
.skv-mb-16 { margin-bottom: 16px; }
.skv-mb-20 { margin-bottom: 20px; }
.skv-mb-24 { margin-bottom: 24px; }
.skv-mt-2 { margin-top: 2px; }
.skv-mt-4 { margin-top: 4px; }
.skv-mt-6 { margin-top: 6px; }
.skv-mt-8 { margin-top: 8px; }
.skv-mt-16 { margin-top: 16px; }

/* ── Metrics Strip ── */
.skv-metrics-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; margin-bottom: 20px; }
.skv-metric-card { background: var(--surface, #fff); border: 1px solid var(--border, #e8e6e1); border-radius: 10px; padding: 12px 14px; }
.skv-metric-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted, #8a8a8a); display: flex; align-items: center; gap: 5px; margin-bottom: 6px; }
.skv-metric-value { font-size: 24px; font-weight: 800; line-height: 1.1; }
.skv-metric-sub { font-size: 10px; color: var(--light, #b0aead); margin-top: 2px; }

/* ── Cards (DS Section 4) ── */
.skv-card { background: var(--surface, #fff); border: 1px solid var(--border, #e8e6e1); border-radius: 12px; padding: 16px 18px; }
.skv-card-accent-red { background: linear-gradient(135deg, #fff5f3 0%, #fff 100%); border: 2px solid var(--accent, #e54d2e); border-radius: 14px; padding: 16px 18px; }
.skv-card-accent-purple { background: linear-gradient(135deg, #f5f3ff 0%, #fff 100%); border: 2px solid var(--purple, #7c3aed); border-radius: 14px; padding: 16px 18px; }
.skv-three-card-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-bottom: 16px; }

/* ── Badges (DS Section 9) ── */
.skv-badge { font-size: 9px; font-weight: 700; padding: 2px 8px; border-radius: 4px; display: inline-flex; align-items: center; }
.skv-badge-sm { font-size: 9px; font-weight: 700; padding: 2px 6px; border-radius: 4px; }
.skv-badge-pill { font-size: 11px; font-weight: 700; padding: 2px 10px; border-radius: 20px; display: inline-flex; align-items: center; gap: 4px; }
.skv-sku-chip { font-family: 'JetBrains Mono', monospace; font-size: 11px; background: #f0f0ee; padding: 1px 8px; border-radius: 4px; }

/* ── Buttons (DS Section 5) ── */
.skv-btn-ai { padding: 8px 16px; border-radius: 8px; border: none; background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: #fff; font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit; display: flex; align-items: center; gap: 5px; transition: all 0.15s; }
.skv-btn-ai:hover { opacity: 0.85; }
.skv-btn-secondary { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border-hover, #d4d2cd); background: var(--surface, #fff); font-size: 12px; font-weight: 500; cursor: pointer; font-family: inherit; color: #555; display: flex; align-items: center; gap: 4px; text-decoration: none; transition: all 0.15s; }
.skv-btn-secondary:hover { border-color: var(--ink, #1a1a1a); color: var(--ink, #1a1a1a); }

/* ── Breadcrumb ── */
.skv-breadcrumb { font-size: 12px; color: var(--muted, #8a8a8a); margin-bottom: 6px; display: flex; align-items: center; gap: 4px; }
.skv-breadcrumb a { color: var(--blue, #3b82f6); }

/* ── Header ── */
.skv-page-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.skv-header-subtitle { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted, #8a8a8a); }
.skv-header-badges { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.skv-header-actions { display: flex; gap: 8px; }

/* ── Collapsible Section ── */
.skv-collapsible { background: var(--surface, #fff); border: 1px solid var(--border, #e8e6e1); border-radius: 12px; overflow: hidden; margin-bottom: 16px; }
.skv-collapsible-header { width: 100%; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; background: var(--surface-alt, #fafaf8); border: none; cursor: pointer; font-family: inherit; }
.skv-collapsible-title { display: flex; align-items: center; gap: 8px; }
.skv-collapsible-body { padding: 0 20px 20px; }

/* ── Tables (DS Section 10) ── */
.skv-table-wrap { border-radius: 8px; overflow: hidden; border: 1px solid var(--border, #e8e6e1); margin-bottom: 16px; }
.skv-table-head { background: var(--surface-alt, #fafaf8); border-bottom: 1px solid var(--border-light, #f0eeea); }
.skv-table-row { border-bottom: 1px solid #f5f4f2; }
.skv-table-row:last-child { border-bottom: none; }
.skv-table-footer { background: var(--surface-alt, #fafaf8); font-size: 12px; font-weight: 700; }
.skv-th { padding: 8px; }
.skv-td { padding: 10px 8px; font-size: 12px; }

/* Grid patterns for specific tables */
.skv-loc-grid { display: grid; grid-template-columns: 1fr 80px 80px 80px 80px 70px; gap: 4px; padding: 8px 20px; }
.skv-loc-grid-row { display: grid; grid-template-columns: 1fr 80px 80px 80px 80px 70px; gap: 4px; padding: 10px 20px; align-items: center; }
.skv-fw-grid { display: grid; grid-template-columns: 70px 80px 80px 70px 65px 65px 90px 55px 90px; }
.skv-ps-grid { display: grid; grid-template-columns: 60px 80px 80px 70px 80px; }
.skv-pace-grid { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr 1fr; }

/* Location section */
.skv-loc-section { background: var(--surface, #fff); border: 1px solid var(--border, #e8e6e1); border-radius: 12px; overflow: hidden; margin-bottom: 16px; max-width: 50%; }
.skv-loc-header { padding: 14px 20px; border-bottom: 1px solid var(--border, #e8e6e1); display: flex; align-items: center; gap: 8px; }

/* ── ADD Summary Flow ── */
.skv-add-flow { display: flex; align-items: center; justify-content: center; gap: 16px; padding: 16px 0; background: var(--surface-alt, #fafaf8); border-radius: 8px; }
.skv-add-flow-arrow { font-size: 20px; color: var(--light, #b0aead); }

/* ── Order Timeline ── */
.skv-timeline-bar { display: flex; height: 44px; border-radius: 8px; overflow: hidden; border: 1px solid var(--border, #e8e6e1); }
.skv-timeline-segment { display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 700; min-width: 50px; text-align: center; line-height: 1.3; border-right: 1px solid rgba(255,255,255,0.3); }
.skv-timeline-segment:last-child { border-right: none; }
.skv-timeline-dates { display: flex; margin-top: 6px; }
.skv-timeline-caveat { font-size: 10px; color: var(--light, #b0aead); margin-top: 8px; font-style: italic; }

/* ── Formula Steps ── */
.skv-formula-step { background: var(--surface-alt, #fafaf8); border-radius: 8px; padding: 16px 18px; }
.skv-formula-box { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: #555; padding: 6px 12px; background: var(--surface, #fff); border-radius: 6px; border: 1px solid var(--border, #e8e6e1); margin-bottom: 6px; }
.skv-formula-result { font-family: 'JetBrains Mono', monospace; font-size: 13px; padding: 10px 12px; background: var(--surface, #fff); border-radius: 6px; border: 1px solid var(--border, #e8e6e1); }

/* ── Callout Banners ── */
.skv-callout-green { background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 8px; padding: 12px 16px; }
.skv-callout-amber { background: #fffbeb; border: 1px solid #fef3c7; border-radius: 8px; padding: 12px 16px; }
.skv-callout-blue { background: #eff6ff; border: 1px solid #dbeafe; border-radius: 8px; padding: 12px 16px; }
.skv-callout-yellow { background: #fffdf7; border: 1px solid #fef3c7; border-radius: 8px; padding: 14px 16px; }
.skv-callout-body { font-size: 12px; color: #555; line-height: 1.6; }

/* ── Progress Bars ── */
.skv-avail-bar-track { height: 6px; border-radius: 3px; background: var(--border-light, #f0eeea); overflow: hidden; }
.skv-avail-bar-fill { height: 100%; border-radius: 3px; opacity: 0.6; }
.skv-pace-bar-track { height: 8px; border-radius: 4px; background: var(--border, #e8e6e1); overflow: hidden; position: relative; }
.skv-pace-bar-fill { height: 100%; border-radius: 4px; }

/* ── Sparkline ── */
.skv-sparkline-bars { display: flex; align-items: flex-end; gap: 3px; height: 44px; margin-bottom: 6px; }
.skv-sparkline-axis { display: flex; justify-content: space-between; font-size: 9px; color: var(--light, #b0aead); }

/* ── Chart ── */
.skv-chart-legend { display: flex; gap: 16px; font-size: 10px; color: var(--muted, #8a8a8a); margin-bottom: 10px; }
.skv-chart-canvas-wrap { position: relative; height: 340px; }
.skv-legend-swatch { display: inline-flex; align-items: center; gap: 4px; }
.skv-legend-line { display: inline-block; width: 10px; height: 3px; border-radius: 1px; }
.skv-legend-bar { display: inline-block; width: 10px; height: 8px; border-radius: 2px; opacity: 0.4; }

/* ── Key Date Cards ── */
.skv-key-date-card { background: var(--surface, #fff); border-radius: 8px; padding: 10px; text-align: center; border: 1px solid var(--border, #e8e6e1); }
.skv-three-col-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

/* ── Buy Plan Calculation ── */
.skv-calc-grid { display: grid; grid-template-columns: 1fr auto; gap: 6px 24px; font-size: 13px; font-family: 'JetBrains Mono', monospace; margin-bottom: 12px; }
.skv-calc-label { color: var(--muted, #8a8a8a); font-family: 'DM Sans', sans-serif; font-size: 12px; }
.skv-calc-value { text-align: right; font-weight: 700; }
.skv-calc-divider { grid-column: 1 / -1; border-top: 2px solid var(--purple, #7c3aed); margin: 4px 0; }

/* ── Stock-out Marker ── */
.skv-stockout-callout { font-size: 9px; font-weight: 700; color: var(--red, #dc2626); background: #fef2f2; padding: 2px 8px; border-radius: 4px; white-space: nowrap; border: 1px solid #fecaca; }
.skv-stockout-line { width: 2px; background: var(--red, #dc2626); z-index: 2; position: absolute; top: -4px; bottom: -4px; }
.skv-stockout-dot { position: absolute; top: -2px; left: -3px; width: 8px; height: 8px; border-radius: 50%; background: var(--red, #dc2626); }

/* ── Forecast Block (Redesigned) ── */
.skv-forecast-header { background: var(--surface-alt, #fafaf8); border-bottom: 1px solid #f0eeea; }
.skv-forecast-collapsed-summary { font-size: 12px; color: var(--muted, #8a8a8a); display: none; }
.skv-collapsible-header[aria-expanded="false"] .skv-forecast-collapsed-summary,
.skv-collapsible:not([data-collapsible-section-open-value="true"]) .skv-forecast-collapsed-summary { display: inline; }

/* Pipeline layout */
.skv-forecast-pipeline { display: flex; align-items: stretch; gap: 0; margin-bottom: 16px; margin-top: 16px; }
.skv-forecast-strip { display: flex; flex: 1; min-width: 0; }

/* Pipeline boxes */
.skv-forecast-box { flex: 1; padding: 14px 16px; background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.skv-forecast-box-base { border-radius: 8px 0 0 8px; border-right: none; }
.skv-forecast-box-adjusted { border-right: none; border-left: none; }
.skv-forecast-box-final { border-radius: 0 8px 8px 0; border-left: none; flex: 1.3; }
.skv-forecast-box-final--override { background: #fffdf7; border: 1.5px solid #d97706; border-radius: 0 8px 8px 0; }
.skv-forecast-box-label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: #8a8a8a; margin-bottom: 4px; }
.skv-forecast-box-value { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 800; color: #1a1a1a; line-height: 1.2; }
.skv-forecast-box-unit { font-size: 12px; font-weight: 500; color: #8a8a8a; }
.skv-forecast-override-indicator { font-size: 11px; font-weight: 700; color: #d97706; margin-top: 2px; }

/* Arrow connectors */
.skv-forecast-arrow { width: 28px; display: flex; align-items: center; justify-content: center; background: var(--surface-alt, #fafaf8); border-top: 1px solid #f0eeea; border-bottom: 1px solid #f0eeea; font-size: 14px; color: #b0aead; flex-shrink: 0; }

/* MAPE box (standalone) */
.skv-forecast-mape-box { width: 90px; flex-shrink: 0; margin-left: 10px; padding: 14px 10px; background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; position: relative; }

/* Metadata line */
.skv-forecast-metadata { font-size: 11px; color: #b0aead; display: flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.skv-forecast-metadata-sep { color: #b0aead; }

/* Override active banner */
.skv-forecast-override-banner { background: #fffdf7; border: 1px solid #fef3c7; border-radius: 8px; padding: 12px 16px; display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.skv-forecast-override-banner-content { flex: 1; min-width: 0; }
.skv-forecast-override-banner-header { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
.skv-forecast-override-math { font-size: 12px; color: #555; line-height: 1.6; }
.skv-forecast-override-attribution { font-size: 11px; color: #8a8a8a; margin-top: 2px; }
.skv-forecast-override-note { margin-top: 8px; background: #fff; border: 1px solid #f0eeea; border-radius: 6px; padding: 6px 10px; font-size: 12px; color: #555; font-style: italic; }
.skv-forecast-override-banner-action { flex-shrink: 0; }

/* Reset button */
.skv-forecast-reset-btn { display: inline-flex; align-items: center; gap: 4px; padding: 6px 12px; background: #fff; border: 1px solid #d4d2cd; border-radius: 6px; font-size: 12px; font-weight: 500; cursor: pointer; font-family: inherit; color: #555; transition: border-color 0.15s, color 0.15s; }
.skv-forecast-reset-btn:hover { border-color: #dc2626; color: #dc2626; }

/* Toggle link (no override) */
.skv-forecast-toggle-link { display: inline-flex; align-items: center; gap: 6px; background: none; border: none; padding: 0; font-size: 12px; font-weight: 600; color: #3b82f6; cursor: pointer; font-family: inherit; }
.skv-forecast-toggle-link:hover { text-decoration: underline; }

/* Controls panel */
.skv-forecast-controls { background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; border-radius: 8px; padding: 14px 16px; margin-top: 10px; }
.skv-forecast-controls-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.skv-forecast-controls-label { font-size: 12px; font-weight: 600; color: #8a8a8a; }

/* Stepper */
.skv-forecast-stepper { display: flex; align-items: center; }
.skv-forecast-stepper-btn { width: 32px; height: 32px; background: #fff; border: 1px solid #e8e6e1; cursor: pointer; font-size: 16px; font-family: inherit; display: flex; align-items: center; justify-content: center; }
.skv-forecast-stepper-btn-left { border-radius: 6px 0 0 6px; border-right: none; }
.skv-forecast-stepper-btn-right { border-radius: 0 6px 6px 0; border-left: none; }
.skv-forecast-stepper-input { width: 56px; height: 32px; text-align: center; border: 1px solid #e8e6e1; border-radius: 0; font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 700; padding: 0; -moz-appearance: textfield; }
.skv-forecast-stepper-input::-webkit-inner-spin-button,
.skv-forecast-stepper-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

/* Live preview */
.skv-forecast-live-preview { font-family: 'JetBrains Mono', monospace; font-size: 14px; font-weight: 700; color: #8a8a8a; }
.skv-forecast-live-preview--active { color: #d97706; }

/* Duration input */
.skv-forecast-duration-input { width: 56px; height: 32px; text-align: center; border: 1px solid #e8e6e1; border-radius: 6px; font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 700; padding: 0; -moz-appearance: textfield; }
.skv-forecast-duration-input::-webkit-inner-spin-button,
.skv-forecast-duration-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

/* Permanent checkbox label */
.skv-forecast-permanent-label { display: inline-flex; align-items: center; gap: 3px; font-size: 12px; color: #8a8a8a; cursor: pointer; margin-left: 2px; }

/* Controls row 2 */
.skv-forecast-controls-actions { display: flex; align-items: center; gap: 8px; }
.skv-forecast-note-input { flex: 1; border: 1px solid #e8e6e1; border-radius: 6px; padding: 6px 10px; font-size: 12px; font-family: inherit; }
.skv-forecast-note-input::placeholder { color: #b0aead; }
.skv-forecast-save-btn { padding: 6px 14px; background: #e54d2e; color: #fff; border: none; border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit; white-space: nowrap; }
.skv-forecast-save-btn:disabled { background: #d4d2cd; cursor: not-allowed; }
.skv-forecast-cancel-btn { padding: 6px 14px; background: #fff; border: 1px solid #e8e6e1; border-radius: 6px; font-size: 12px; font-weight: 600; color: #8a8a8a; cursor: pointer; font-family: inherit; white-space: nowrap; }

/* Model change / stale notices */
.skv-forecast-model-change-notice { background: #fef3c7; border: 1px solid #f59e0b; border-radius: 6px; padding: 8px 12px; margin-bottom: 12px; font-size: 13px; color: #92400e; }
.skv-forecast-stale-warning { background: #fef2f2; border: 1px solid #ef4444; border-radius: 6px; padding: 8px 12px; margin-bottom: 12px; font-size: 13px; color: #991b1b; }

/* ═══ Shared Forecast Components (fc-*) ═══
   Reusable across HW, Croston's, and future model views.
   Model-specific accents via modifier classes (--hw, --croston). */

/* Semantic color helpers for formula components */
.fc-c-level { color: var(--blue, #3b82f6); }
.fc-c-seasonal { color: var(--purple, #7c3aed); }
.fc-c-interval { color: var(--purple, #7c3aed); }
.fc-c-size { color: var(--blue, #3b82f6); }
.fc-c-trend-up { color: var(--green, #16a34a); }
.fc-c-trend-down { color: var(--red, #dc2626); }
.fc-c-trend-flat { color: var(--muted, #8a8a8a); }
.fc-c-bias { color: var(--amber, #d97706); }
.fc-c-result { color: var(--ink, #1a1a1a); }
.fc-bold { font-weight: 700; }
.fc-heavy { font-weight: 800; }

/* Hero row (the forecast output strip above decomposition) */
.fc-hero-row { display: flex; align-items: stretch; gap: 10px; flex: 1; min-width: 0; }

/* Hero card — large forecast value */
.fc-hero { flex: 1; padding: 14px 18px; border-radius: 8px; border-width: 1.5px; border-style: solid; }
.fc-hero--hw { background: #f0fdf4; border-color: #bbf7d0; }
.fc-hero--croston { background: #fffdf7; border-color: #fef3c7; }
.fc-hero__label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.fc-hero__value-row { display: flex; align-items: baseline; gap: 6px; }
.fc-hero__value { font-family: 'JetBrains Mono', monospace; font-size: 28px; font-weight: 800; line-height: 1.2; }
.fc-hero__unit { font-size: 13px; font-weight: 500; color: var(--muted, #8a8a8a); }
.fc-hero__equation { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted, #8a8a8a); margin-top: 4px; }

/* Stat cards (Trend, Pattern, Frequency, MAPE) */
.fc-stat { flex-shrink: 0; padding: 14px 12px; background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.fc-stat--w120 { width: 120px; }
.fc-stat--w180 { width: 180px; }
.fc-stat--w90 { width: 90px; }
.fc-stat__label { font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted, #8a8a8a); margin-bottom: 4px; }
.fc-stat__value-row { display: flex; align-items: center; gap: 2px; }
.fc-stat__value { font-family: 'JetBrains Mono', monospace; font-size: 18px; font-weight: 800; }
.fc-stat__value--sm { font-size: 13px; font-weight: 700; }
.fc-stat__sub { font-size: 10px; color: var(--muted, #8a8a8a); margin-top: 2px; }
.fc-stat__sub--tiny { font-size: 9px; color: var(--light, #b0aead); }

/* Decomposition container (tinted section) */
.fc-decomp { border-radius: 10px; padding: 16px 20px; margin-bottom: 16px; border-width: 1px; border-style: solid; }
.fc-decomp--hw { background: #f0fdf4; border-color: #bbf7d0; }
.fc-decomp--croston { background: #fffdf7; border-color: #fef3c7; }
.fc-decomp__header { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; }
.fc-decomp__title { font-size: 13px; font-weight: 700; }
.fc-decomp__subtitle { font-size: 10px; color: var(--muted, #8a8a8a); }

/* Component cards inside decomposition */
.fc-components { display: grid; gap: 10px; margin-bottom: 14px; }
.fc-components--3col { grid-template-columns: repeat(3, 1fr); }
.fc-components--2col { grid-template-columns: 1fr 60px 1fr; }
.fc-card { background: #fff; border-radius: 8px; padding: 14px 16px; border: 1px solid var(--border, #e8e6e1); }
.fc-card__header { display: flex; align-items: center; gap: 5px; margin-bottom: 8px; }
.fc-card__label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.fc-card__badge { font-size: 8px; font-weight: 700; padding: 1px 6px; border-radius: 3px; }
.fc-card__badge--neutral { background: #f0eeea; color: var(--muted, #8a8a8a); }
.fc-card__badge--purple { background: #f5f3ff; color: var(--purple, #7c3aed); }
.fc-card__badge--amber { background: #fffbeb; color: var(--amber, #d97706); }
.fc-card__value { font-family: 'JetBrains Mono', monospace; font-size: 24px; font-weight: 800; line-height: 1.2; }
.fc-card__value--lg { font-size: 28px; }
.fc-card__suffix { font-size: 12px; font-weight: 500; color: var(--muted, #8a8a8a); }
.fc-card__suffix--lg { font-size: 13px; }
.fc-card__desc { font-size: 11px; color: var(--muted, #8a8a8a); line-height: 1.5; margin-top: 6px; }
.fc-card__formula { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted, #8a8a8a); background: var(--surface-alt, #fafaf8); padding: 4px 8px; border-radius: 4px; margin-top: 8px; }

/* Divider between component cards (Croston's ÷) */
.fc-divider { display: flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace; font-size: 20px; font-weight: 800; color: var(--light, #b0aead); background: var(--surface-alt, #fafaf8); border-top: 1px solid var(--border, #e8e6e1); border-bottom: 1px solid var(--border, #e8e6e1); }

/* Formula card */
.fc-formula { background: #fff; border-radius: 8px; padding: 14px 16px; border: 1px solid var(--border, #e8e6e1); margin-bottom: 14px; }
.fc-formula__label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted, #8a8a8a); margin-bottom: 8px; }
.fc-formula__generic { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: #555; background: var(--surface-alt, #fafaf8); padding: 6px 10px; border-radius: 4px; margin-bottom: 12px; }
.fc-formula__steps { display: flex; flex-direction: column; gap: 6px; }
.fc-formula__step-label { font-size: 12px; color: var(--muted, #8a8a8a); margin-bottom: 2px; }
.fc-formula__step-calc { font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.8; }
.fc-formula__step-calc--lg { font-size: 14px; line-height: 2; }
.fc-formula__note { font-size: 10px; font-style: italic; color: var(--muted, #8a8a8a); margin-top: 8px; }

/* Sparkline (shared between seasonal bars and demand events) */
.fc-sparkline { background: #fff; border-radius: 8px; padding: 14px 16px; border: 1px solid var(--border, #e8e6e1); }
.fc-sparkline__label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 10px; }
.fc-sparkline__bars { display: flex; align-items: flex-end; gap: 4px; height: 80px; }
.fc-sparkline__bars--sm { height: 50px; gap: 2px; }
.fc-sparkline__col { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.fc-sparkline__tip { font-family: 'JetBrains Mono', monospace; font-size: 8px; font-weight: 700; margin-bottom: 2px; white-space: nowrap; }
.fc-sparkline__bar { width: 100%; min-width: 8px; border-radius: 2px 2px 0 0; transition: height 0.3s ease; }
.fc-sparkline__bar-text { font-size: 7px; font-weight: 700; color: #fff; text-align: center; padding-top: 2px; }
.fc-sparkline__x-label { font-size: 9px; color: var(--light, #b0aead); margin-top: 4px; text-align: center; }
.fc-sparkline__x-label--active { font-weight: 700; }
.fc-sparkline__ref { font-size: 10px; color: var(--muted, #8a8a8a); margin-top: 8px; line-height: 1.5; }
.fc-sparkline__x-ends { display: flex; justify-content: space-between; font-size: 9px; color: var(--light, #b0aead); margin-top: 4px; }

/* Event chips (Croston's recent demand events) */
.fc-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.fc-chip { padding: 4px 10px; border-radius: 4px; background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; font-size: 11px; }
.fc-chip__date { color: var(--muted, #8a8a8a); }
.fc-chip__qty { font-family: 'JetBrains Mono', monospace; font-weight: 700; }
.fc-chip__more { color: var(--muted, #8a8a8a); font-style: italic; padding: 4px 8px; font-size: 11px; }

/* Variant cards (Croston's SBA vs TSB) */
.fc-variants { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.fc-variant { border-radius: 8px; padding: 12px 14px; }
.fc-variant--active { border-width: 1.5px; border-style: solid; }
.fc-variant--active-sba { background: #fffdf7; border-color: var(--amber, #d97706); }
.fc-variant--active-tsb { background: #fef8f7; border-color: var(--red, #dc2626); }
.fc-variant--inactive { background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; }
.fc-variant__title { font-size: 11px; font-weight: 700; margin-bottom: 4px; }
.fc-variant__desc { font-size: 11px; color: #555; line-height: 1.5; margin-bottom: 6px; }
.fc-variant__metric { font-family: 'JetBrains Mono', monospace; font-size: 11px; }

/* Seasonal bypass note */
.fc-bypass { background: #eff6ff; border: 1px solid #dbeafe; border-radius: 8px; padding: 10px 14px; margin-bottom: 12px; display: flex; align-items: flex-start; gap: 8px; }
.fc-bypass__title { font-size: 11px; font-weight: 700; color: var(--blue, #3b82f6); }
.fc-bypass__text { font-size: 12px; color: #555; }

/* Classification / graduation (collapsible) */
.fc-classify { margin-bottom: 8px; }
.fc-classify__toggle { display: flex; align-items: center; gap: 6px; background: none; border: none; padding: 0; font-size: 12px; font-weight: 600; cursor: pointer; font-family: inherit; width: 100%; text-align: left; }
.fc-classify__toggle:hover { text-decoration: underline; }
.fc-classify__toggle--hw { color: var(--green, #16a34a); }
.fc-classify__toggle--croston { color: var(--amber, #d97706); }
.fc-classify__content { background: var(--surface-alt, #fafaf8); border: 1px solid #f0eeea; border-radius: 8px; padding: 14px 16px; margin-top: 8px; }
.fc-classify__explanation { font-size: 11px; color: var(--muted, #8a8a8a); line-height: 1.5; margin-bottom: 12px; }
.fc-classify__rows { display: flex; flex-direction: column; gap: 6px; }
.fc-classify__row { display: flex; align-items: center; gap: 8px; }
.fc-classify__criterion { font-size: 12px; flex: 1; }
.fc-classify__value { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 700; text-align: right; white-space: nowrap; }
.fc-ml-auto { margin-left: auto; }

/* Classification matrix (Croston's 2x2) */
.fc-matrix { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 12px; }
.fc-matrix th { background: var(--ink, #1a1a1a); color: #fff; padding: 6px 10px; font-weight: 600; font-size: 11px; }
.fc-matrix td { padding: 8px 10px; border: 1px solid var(--border, #e8e6e1); text-align: center; color: var(--muted, #8a8a8a); }
.fc-matrix__active { font-weight: 700; }
.fc-matrix__active--sba { background: #fffdf7; color: var(--amber, #d97706); }
.fc-matrix__active--tsb { background: #fef8f7; color: var(--red, #dc2626); }

/* Classification stat cards (ADI, CV²) */
.fc-classify-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }

/* ═══ Waterfall Order Calculation ═══ */
.wf-stack { display: flex; flex-direction: column; gap: 12px; max-width: 520px; }
.wf-step { background: var(--surface-alt, #fafaf8); border-radius: 8px; padding: 14px 16px; }
.wf-step--accent { background: linear-gradient(135deg, #fff5f3 0%, #fff 100%); border: 2px solid var(--accent, #e54d2e); }
.wf-step__label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted, #8a8a8a); margin-bottom: 2px; }
.wf-step__label--accent { color: var(--accent, #e54d2e); }
.wf-step__desc { font-size: 11px; color: var(--light, #b0aead); margin-bottom: 10px; }
.wf-rows { display: flex; flex-direction: column; }
.wf-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; background: #fff; border: 1px solid var(--border, #e8e6e1); border-top: none; }
.wf-row--first { border-top: 1px solid var(--border, #e8e6e1); border-radius: 6px 6px 0 0; }
.wf-row--last { border-radius: 0 0 6px 6px; border-top: none; }
.wf-row--result { padding: 10px 12px; }
.wf-row__left { font-size: 12px; color: var(--muted, #8a8a8a); }
.wf-row__left--result { font-size: 13px; font-weight: 700; color: var(--ink, #1a1a1a); }
.wf-row__left--accent { font-size: 14px; font-weight: 700; color: var(--accent, #e54d2e); }
.wf-row__right { font-family: 'JetBrains Mono', monospace; font-size: 14px; font-weight: 700; color: var(--ink, #1a1a1a); }
.wf-row__right--add { color: var(--blue, #3b82f6); }
.wf-row__right--sub { color: var(--green, #16a34a); }
.wf-row__right--result { font-size: 18px; font-weight: 800; }
.wf-row__right--accent { font-size: 20px; font-weight: 800; color: var(--accent, #e54d2e); }
.wf-hint { font-size: 10px; color: var(--light, #b0aead); margin-left: 6px; }
.wf-divider { height: 2px; background: var(--ink, #1a1a1a); }
.wf-divider--accent { background: var(--accent, #e54d2e); }
.wf-units { font-size: 12px; color: var(--muted, #8a8a8a); font-weight: 500; margin-left: 4px; }
.wf-pack-note { font-size: 10px; font-style: italic; color: var(--muted, #8a8a8a); margin-top: 10px; }

/* ── Responsive (DS: 768px breakpoint) ── */
@media (max-width: 768px) {
  .skv-page { padding: 20px 12px; }
  .skv-page-title { font-size: 18px; }
  .skv-metrics-strip { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .skv-metric-value { font-size: 20px; }
  .skv-three-card-row { grid-template-columns: 1fr; gap: 10px; }
  .skv-hero-value { font-size: 24px; }
  .skv-large-value { font-size: 22px; }
  .skv-add-flow { flex-wrap: wrap; gap: 10px; }
  .skv-loc-grid, .skv-loc-grid-row { overflow-x: auto; }
  .skv-three-col-grid { grid-template-columns: 1fr; }
  .skv-forecast-pipeline { flex-direction: column; gap: 10px; }
  .skv-forecast-strip { flex-wrap: wrap; }
  .skv-forecast-mape-box { width: auto; margin-left: 0; }
  .skv-forecast-box-value { font-size: 18px; }
  .skv-forecast-controls-row { flex-direction: column; align-items: flex-start; }
  /* Forecast component responsive */
  .fc-hero-row { flex-direction: column; }
  .fc-hero__value { font-size: 22px; }
  .fc-stat { width: auto !important; }
  .fc-components--3col { grid-template-columns: 1fr; }
  .fc-components--2col { grid-template-columns: 1fr; }
  .fc-divider { height: 40px; border: 1px solid var(--border, #e8e6e1); border-radius: 0; }
  .fc-card__value { font-size: 20px; }
  .fc-formula__step-calc { overflow-x: auto; }
  .fc-sparkline__bars { overflow-x: auto; }
  .fc-variants { grid-template-columns: 1fr; }
  .fc-classify-stats { grid-template-columns: 1fr; }
  /* Waterfall responsive */
  .wf-stack { max-width: 100%; }
}