/**
 * SDR Calculator — Stylesheet
 * Extracted from sdr-mockup-teal.html and adapted for WordPress embedding.
 *
 * All rules scoped under .sdr-calculator to avoid polluting the WP theme.
 * Theming via data-sdr-theme="dark|light" on the root element.
 * Accent color via --sdr-accent (injected inline by PHP from admin setting).
 *
 * @package SDR\Calculator
 */

/* ============================================================
   FONTS — loaded by shortcode PHP (wp_enqueue_style with URL)
   ============================================================ */
/* DM Sans + JetBrains Mono loaded via Google Fonts handle */

/* ============================================================
   DARK THEME (default)
   ============================================================ */
.sdr-calculator[data-sdr-theme="dark"],
.sdr-calculator:not([data-sdr-theme]) {
  /* Surface hierarchy */
  --sdr-bg-base:    #0f1114;
  --sdr-bg-raised:  #181b20;
  --sdr-bg-overlay: #1e2228;
  --sdr-bg-input:   #13161a;
  --sdr-bg-hover:   #252930;

  /* Text */
  --sdr-text-primary:   #e8e6e1;
  --sdr-text-secondary: #8b8d93;
  --sdr-text-tertiary:  #5a5c62;
  --sdr-text-on-accent: #ffffff;

  /* Borders */
  --sdr-border:        #2a2d33;
  --sdr-border-focus:  var(--sdr-accent);
  --sdr-border-subtle: #1f2228;
}

/* ============================================================
   LIGHT THEME
   ============================================================ */
.sdr-calculator[data-sdr-theme="light"] {
  --sdr-bg-base:    #f5f5f3;
  --sdr-bg-raised:  #ffffff;
  --sdr-bg-overlay: #f0f0ee;
  --sdr-bg-input:   #fafafa;
  --sdr-bg-hover:   #e8e8e6;

  --sdr-text-primary:   #1a1a1a;
  --sdr-text-secondary: #666666;
  --sdr-text-tertiary:  #aaaaaa;
  --sdr-text-on-accent: #ffffff;

  --sdr-border:        #e0e0de;
  --sdr-border-focus:  var(--sdr-accent);
  --sdr-border-subtle: #ebebea;
}

.sdr-calculator[data-sdr-theme="light"] .sdr-zone-identity {
  background: #f7f7f5;
}

/* ============================================================
   ROOT — accent color defaults + semantic colors (theme-independent)
   ============================================================ */
.sdr-calculator {
  /* Accent — can be overridden by inline style injected from PHP */
  --sdr-accent:              #18b5a0;

  /* Formula palette — one color per field */
  --sdr-formula-vc:   #06B6D4;   /* cyan-500    */
  --sdr-formula-rpm:  #0EA5E9;   /* sky-500     */
  --sdr-formula-fz:   #3B82F6;   /* blue-500    */
  --sdr-formula-vf:   #6366F1;   /* indigo-500  */
  --sdr-formula-fu:   #A855F7;   /* purple-500  */
  --sdr-formula-dc:   #14B8A6;   /* teal-500 — tool param, read-only */
  --sdr-formula-z:    #8B5CF6;   /* violet-500 — tool param, read-only */
  --sdr-accent-bright:       #20d4bc;
  --sdr-accent-dim:          #0f8a7a;
  --sdr-accent-surface:      rgba(24, 181, 160, 0.08);
  --sdr-accent-surface-hover:rgba(24, 181, 160, 0.14);

  /* Semantic state colors (fixed, not theme-dependent) */
  --sdr-modified:              var(--sdr-accent);
  --sdr-cascade:               #6b98c4;
  --sdr-locked:                #e08330;
  --sdr-locked-surface:        rgba(224, 131, 48, 0.08);
  --sdr-locked-surface-hover:  rgba(224, 131, 48, 0.14);
  --sdr-error:                 #c44040;
  --sdr-success:               #3da06b;
  --sdr-info:                  #5b8ec9;

  /* Typography */
  --sdr-font-body: 'DM Sans', system-ui, sans-serif;
  --sdr-font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --sdr-gap-xs: 4px;
  --sdr-gap-sm: 8px;
  --sdr-gap-md: 16px;
  --sdr-gap-lg: 24px;
  --sdr-gap-xl: 32px;

  /* Radius */
  --sdr-radius-sm: 4px;
  --sdr-radius-md: 8px;
  --sdr-radius-lg: 12px;
}

/* ============================================================
   SHELL
   ============================================================ */
.sdr-calculator {
  container-type: inline-size;
  container-name: sdr;
  background: var(--sdr-bg-base);
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-body);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
  position: relative;
}

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

/* ============================================================
   ZONE 1 — IDENTITY (header)
   ============================================================ */
.sdr-calculator .sdr-zone-identity {
  background: var(--sdr-bg-raised);
  border-bottom: 1px solid var(--sdr-border);
}

.sdr-calculator .sdr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sdr-gap-md) var(--sdr-gap-lg);
  gap: var(--sdr-gap-md);
}

.sdr-calculator .sdr-logo {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sdr-text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}
.sdr-calculator .sdr-logo span {
  color: var(--sdr-accent);
}

.sdr-calculator .sdr-header-actions {
  display: flex;
  align-items: center;
  gap: var(--sdr-gap-sm);
  flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.sdr-calculator .sdr-btn {
  font-family: var(--sdr-font-body);
  font-size: 13px;
  font-weight: 500;
  border: none;
  border-radius: var(--sdr-radius-sm);
  padding: 7px 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  white-space: nowrap;
  text-decoration: none;
}

.sdr-calculator .sdr-btn-ghost {
  background: transparent;
  color: var(--sdr-text-secondary);
  border: 1px solid var(--sdr-border);
}
.sdr-calculator .sdr-btn-ghost:hover {
  color: var(--sdr-text-primary);
  border-color: var(--sdr-text-tertiary);
  background: var(--sdr-bg-hover);
}

.sdr-calculator .sdr-btn-accent {
  background: var(--sdr-accent);
  color: var(--sdr-text-on-accent);
  border: none;
}
.sdr-calculator .sdr-btn-accent:hover {
  background: var(--sdr-accent-bright);
}

.sdr-calculator .sdr-btn-subtle {
  background: var(--sdr-bg-overlay);
  color: var(--sdr-text-secondary);
  border: 1px solid transparent;
}
.sdr-calculator .sdr-btn-subtle:hover {
  color: var(--sdr-text-primary);
  background: var(--sdr-bg-hover);
}

.sdr-calculator .sdr-icon-btn {
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  color: var(--sdr-text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}
.sdr-calculator .sdr-icon-btn:hover {
  color: var(--sdr-text-primary);
  border-color: var(--sdr-text-tertiary);
  background: var(--sdr-bg-hover);
}

/* ============================================================
   SEARCH BAR
   ============================================================ */
.sdr-calculator .sdr-search-row {
  padding: 0 var(--sdr-gap-lg) var(--sdr-gap-md);
}

.sdr-calculator .sdr-search-container {
  position: relative;
  display: flex;
  gap: var(--sdr-gap-sm);
  align-items: stretch;
}

.sdr-calculator .sdr-search-input {
  flex: 1;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  padding: 10px 14px 10px 40px;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  outline: none;
  transition: border-color 0.15s ease;
}
.sdr-calculator .sdr-search-input::placeholder {
  color: var(--sdr-text-tertiary);
  font-family: var(--sdr-font-body);
  font-weight: 400;
  letter-spacing: 0;
}
.sdr-calculator .sdr-search-input:focus {
  border-color: var(--sdr-accent-dim);
}

.sdr-calculator .sdr-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--sdr-text-tertiary);
  pointer-events: none;
}

.sdr-calculator .sdr-strategies-toggle {
  flex-shrink: 0;
}

.sdr-calculator .sdr-strategies-toggle.active {
  background: var(--sdr-accent-bright);
  box-shadow: inset 0 0 0 2px var(--sdr-text-on-accent);
}

/* ============================================================
   TOOL IDENTITY BANNER
   ============================================================ */
.sdr-calculator .sdr-tool-banner {
  display: none;
  padding: 0 var(--sdr-gap-lg) var(--sdr-gap-md);
}
.sdr-calculator .sdr-tool-banner.active {
  display: block;
  animation: sdrSlideDown 0.2s ease-out;
}

.sdr-calculator .sdr-tool-card {
  display: flex;
  gap: var(--sdr-gap-lg);
  align-items: flex-start;
  padding: var(--sdr-gap-md);
  background: var(--sdr-bg-overlay);
  border-radius: var(--sdr-radius-md);
  border: 1px solid var(--sdr-border-subtle);
}

.sdr-calculator .sdr-tool-image {
  width: 140px;
  height: 64px;
  border-radius: var(--sdr-radius-sm);
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.sdr-calculator .sdr-tool-image img {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 140px;
  width: auto;
  transform: translate(-50%, -50%) rotate(-90deg);
  transform-origin: center;
  object-fit: contain;
  display: block;
}
.sdr-calculator .sdr-tool-image svg { opacity: 0.3; }

/* ============================================================
   TOOL IMAGE MODAL
   ============================================================ */
.sdr-img-modal {
  position: absolute;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.sdr-img-modal.sdr-img-modal--open {
  opacity: 1;
  pointer-events: auto;
}
.sdr-img-modal__img {
  transform: rotate(-90deg) scale(0.85);
  transition: transform 0.2s ease;
  max-height: 70vw;
  max-width: 60vh;
  object-fit: contain;
  display: block;
}
.sdr-img-modal--open .sdr-img-modal__img {
  transform: rotate(-90deg) scale(1);
}

.sdr-calculator .sdr-tool-info { flex: 1; min-width: 0; }

.sdr-calculator .sdr-tool-ref {
  font-family: var(--sdr-font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--sdr-accent);
  margin-bottom: 2px;
}

.sdr-calculator .sdr-tool-type {
  font-size: 12px;
  color: var(--sdr-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--sdr-gap-sm);
}

.sdr-calculator .sdr-tool-specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sdr-gap-xs) var(--sdr-gap-md);
}

.sdr-calculator .sdr-spec {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-size: 12px;
}
.sdr-calculator .sdr-spec-label {
  color: var(--sdr-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 10px;
}
.sdr-calculator .sdr-spec-value {
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-mono);
  font-size: 12px;
  font-weight: 500;
}

.sdr-calculator .sdr-tool-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
  align-self: center;
}

.sdr-calculator .sdr-file-btn {
  font-family: var(--sdr-font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: var(--sdr-radius-sm);
  background: var(--sdr-accent-surface);
  color: var(--sdr-accent);
  border: 1px solid rgba(24, 181, 160, 0.2);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.sdr-calculator .sdr-file-btn:hover {
  background: var(--sdr-accent-surface-hover);
  border-color: rgba(24, 181, 160, 0.35);
}

/* ============================================================
   STRATEGIES DRAWER (not modal — slides below header)
   ============================================================ */
.sdr-calculator .sdr-strategies-panel {
  display: none;
  background: var(--sdr-bg-raised);
  overflow: hidden;
}
.sdr-calculator[data-sdr-theme="light"] .sdr-strategies-panel {
  background: #f2f2f0;
}
.sdr-calculator .sdr-strategies-panel.sdr-open {
  display: block;
  animation: sdrSlideDown 0.25s ease-out;
}

/* ── Strategies topbar (filter + Add Group) ─────────────────────────────── */
.sdr-calculator .sdr-strategies-topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: var(--sdr-gap-sm) var(--sdr-gap-lg);
}
.sdr-calculator .sdr-strategies-topbar input {
  flex: 1;
  min-width: 0;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  padding: 6px 12px;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-body);
  font-size: 13px;
  outline: none;
}
.sdr-calculator .sdr-strategies-topbar input:focus {
  border-color: var(--sdr-accent-dim);
}
.sdr-calculator #sdr-group-add-btn,
.sdr-calculator #sdr-group-sort-btn {
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 12px;
  padding: 5px 12px;
}

.sdr-calculator .sdr-strategies-list {
  padding: 0 var(--sdr-gap-lg) var(--sdr-gap-md);
}

.sdr-calculator .sdr-strategy-group-header {
  display: flex;
  align-items: center;
  gap: var(--sdr-gap-sm);
  padding: var(--sdr-gap-sm) 0;
  color: var(--sdr-text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  user-select: none;
}
.sdr-calculator .sdr-strategy-group-header:hover { color: var(--sdr-text-primary); }
.sdr-calculator .sdr-strategy-group-header > svg:first-child { flex-shrink: 0; transition: transform 0.2s ease; }
.sdr-calculator .sdr-strategy-group-header.collapsed > svg:first-child { transform: rotate(-90deg); }

/* Editable group name span */
.sdr-calculator .sdr-group-name-span {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: text;
}
.sdr-calculator .sdr-group-name-span:hover {
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}
.sdr-calculator .sdr-group-name-label {
  flex: 1;
  min-width: 0;
}

/* Inline edit input (replaces name span while renaming) */
.sdr-calculator .sdr-group-name-edit-input {
  flex: 1;
  min-width: 0;
  background: var(--sdr-bg-primary);
  border: 1px solid var(--sdr-accent);
  border-radius: 3px;
  padding: 2px 6px;
  font-family: var(--sdr-font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--sdr-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  outline: none;
}

/* Group header action buttons (share + delete) — visible on hover */
.sdr-calculator .sdr-group-header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.sdr-calculator .sdr-strategy-group-header:hover .sdr-group-header-actions {
  opacity: 1;
}

/* "Shared with me" group header — distinct colour */
.sdr-calculator .sdr-shared-group-header {
  color: var(--sdr-accent-dim);
  margin-top: var(--sdr-gap-sm);
}
.sdr-calculator .sdr-shared-group-header:hover { color: var(--sdr-accent); }

/* Inline "Add group" row */
.sdr-calculator .sdr-new-group-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0 8px;
}
.sdr-calculator .sdr-new-group-input {
  flex: 1;
  min-width: 0;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-accent);
  border-radius: var(--sdr-radius-sm);
  padding: 5px 10px;
  font-family: var(--sdr-font-body);
  font-size: 13px;
  color: var(--sdr-text-primary);
  outline: none;
}
.sdr-calculator .sdr-new-group-cancel-btn {
  width: 26px;
  height: 26px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Shared loading indicator */
.sdr-calculator .sdr-shared-loading {
  font-size: 11px;
  color: var(--sdr-text-tertiary);
  padding: 4px 0;
}

/* Person icon on shared strategy rows */
.sdr-calculator .sdr-strategy-person-icon {
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  padding: 0 3px;
  cursor: default;
  color: var(--sdr-accent);
  opacity: 0.75;
  vertical-align: middle;
  position: relative;
}
.sdr-calculator .sdr-strategy-person-icon:hover { opacity: 1; }
.sdr-calculator .sdr-strategy-person-icon:hover::after {
  content: attr(title);
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--sdr-bg-overlay, #111);
  color: var(--sdr-text-primary);
  font-size: 11px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  padding: 4px 8px;
  border-radius: var(--sdr-radius-sm);
  white-space: nowrap;
  pointer-events: none;
  z-index: 100;
}

/*
 * Colonne 1 (20px)  : drag handle
 * Colonne 2 (20px)  : checkbox de sélection
 * Colonnes 3-7      : données
 * Colonne auto      : boutons d'action
 */
.sdr-calculator .sdr-strategy-row {
  display: grid;
  grid-template-columns: 20px 20px 2fr 1.5fr 1.5fr 1fr 1fr auto;
  gap: var(--sdr-gap-sm);
  padding: 8px 12px;
  border-radius: var(--sdr-radius-sm);
  cursor: pointer;
  transition: background 0.1s ease;
  align-items: center;
}
.sdr-calculator .sdr-strategy-row:hover { background: var(--sdr-bg-hover); }

/* Drag handle */
.sdr-calculator .sdr-strategy-drag-handle {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sdr-text-tertiary);
  cursor: grab;
  opacity: 0;
  transition: opacity 0.15s ease;
  user-select: none;
}
.sdr-calculator .sdr-strategy-row:hover .sdr-strategy-drag-handle { opacity: 1; }
.sdr-calculator .sdr-strategy-row.sdr-dragging {
  opacity: 0.35;
  cursor: grabbing;
}

/* ── Shared checkbox base styles ─────────────────────────────────────────── */
.sdr-calculator .sdr-strategy-cb,
.sdr-calculator .sdr-group-cb {
  appearance: none;
  -webkit-appearance: none;
  background: var(--sdr-bg-base);
  border: 1px solid var(--sdr-border);
  border-radius: 3px;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  transition: background 0.12s ease, border-color 0.12s ease;
}
/* Checked state */
.sdr-calculator .sdr-strategy-cb:checked,
.sdr-calculator .sdr-group-cb:checked {
  background: var(--sdr-accent);
  border-color: var(--sdr-accent);
}
/* Checkmark */
.sdr-calculator .sdr-strategy-cb:checked::after,
.sdr-calculator .sdr-group-cb:checked::after {
  content: '';
  display: block;
  position: absolute;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}
/* Indeterminate (group select-all partial) */
.sdr-calculator .sdr-strategy-cb:indeterminate,
.sdr-calculator .sdr-group-cb:indeterminate {
  background: var(--sdr-accent);
  border-color: var(--sdr-accent);
}
.sdr-calculator .sdr-strategy-cb:indeterminate::after,
.sdr-calculator .sdr-group-cb:indeterminate::after {
  content: '';
  display: block;
  position: absolute;
  background: #fff;
  border-radius: 1px;
}

/* Strategy row checkbox (14px) */
.sdr-calculator .sdr-strategy-cb-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.sdr-calculator .sdr-strategy-cb {
  width: 14px;
  height: 14px;
}
.sdr-calculator .sdr-strategy-cb:checked::after {
  left: 3px;
  top: 1px;
  width: 5px;
  height: 8px;
}
.sdr-calculator .sdr-strategy-cb:indeterminate::after {
  left: 2px;
  top: 5px;
  width: 8px;
  height: 2px;
}

/* Group header checkbox (13px) */
.sdr-calculator .sdr-group-cb-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  cursor: pointer;
  margin-right: 2px;
}
.sdr-calculator .sdr-group-cb {
  width: 13px;
  height: 13px;
}
.sdr-calculator .sdr-group-cb:checked::after {
  left: 3px;
  top: 1px;
  width: 4px;
  height: 7px;
}
.sdr-calculator .sdr-group-cb:indeterminate::after {
  left: 2px;
  top: 5px;
  width: 7px;
  height: 2px;
}

/* Selection bar */
.sdr-calculator .sdr-selection-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px var(--sdr-gap-lg);
  background: var(--sdr-bg-secondary);
  border-bottom: 1px solid var(--sdr-border);
  gap: 12px;
  animation: sdrSlideDown 0.15s ease-out;
}
.sdr-calculator #sdr-selection-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--sdr-accent);
  white-space: nowrap;
}
.sdr-calculator .sdr-selection-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}
.sdr-calculator .sdr-selection-actions .sdr-btn {
  font-size: 12px;
  padding: 4px 10px;
}

/* Drop target highlight on group headers */
.sdr-calculator .sdr-strategy-group-header.sdr-drag-over {
  color: var(--sdr-accent);
  background: var(--sdr-bg-hover);
  border-radius: var(--sdr-radius-sm);
  padding-left: 8px;
  padding-right: 8px;
  margin-left: -8px;
  margin-right: -8px;
}

.sdr-calculator .sdr-strategy-cell {
  font-size: 13px;
  color: var(--sdr-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sdr-calculator .sdr-strategy-cell.name {
  color: var(--sdr-text-primary);
  font-weight: 500;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
}
.sdr-calculator .sdr-strategy-shared-origin {
  font-size: 11px;
  font-weight: 400;
  color: var(--sdr-text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sdr-calculator .sdr-strategy-cell.tool {
  font-family: var(--sdr-font-mono);
  font-size: 12px;
  color: var(--sdr-accent-dim);
}

.sdr-calculator .sdr-strategy-actions-cell {
  display: flex;
  gap: 4px;
}
.sdr-calculator .sdr-strategy-actions-cell .sdr-icon-btn {
  width: 26px;
  height: 26px;
}

/* ── Inline action row (delete confirm / share) ─────────────────────────────── */
.sdr-calculator .sdr-strategy-action-row {
  display: flex;
  justify-content: flex-end;
  padding: 4px 12px 8px;
  background: var(--sdr-bg-secondary);
  border-radius: 0 0 var(--sdr-radius-sm) var(--sdr-radius-sm);
}

.sdr-calculator .sdr-action-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 12px;
}

.sdr-calculator .sdr-share-email-input {
  font-family: var(--sdr-font-body);
  font-size: 13px;
  padding: 5px 10px;
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  background: var(--sdr-bg-primary);
  color: var(--sdr-text-primary);
  width: 200px;
  outline: none;
}
.sdr-calculator .sdr-share-email-input:focus {
  border-color: var(--sdr-accent);
}

.sdr-calculator .sdr-btn-danger {
  background: #d93025;
  color: #fff;
  border: none;
}
.sdr-calculator .sdr-btn-danger:hover {
  background: #b52a1e;
}


/* ============================================================
   MAIN CONTENT — Zone 2 + Zone 3
   ============================================================ */
.sdr-calculator .sdr-main {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 400px;
}

@container sdr (max-width: 800px) {
  .sdr-calculator .sdr-main {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   ZONE 2 — CONFIGURATION SIDEBAR
   ============================================================ */
.sdr-calculator .sdr-config {
  background: var(--sdr-bg-raised);
  border-right: 1px solid var(--sdr-border);
  padding: var(--sdr-gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sdr-gap-lg);
}

@container sdr (max-width: 800px) {
  .sdr-calculator .sdr-config {
    border-right: none;
    border-bottom: 1px solid var(--sdr-border);
    padding: var(--sdr-gap-md) var(--sdr-gap-lg);
  }
}

.sdr-calculator .sdr-config-section-title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sdr-text-tertiary);
  margin-bottom: var(--sdr-gap-sm);
}

.sdr-calculator .sdr-field {
  margin-bottom: var(--sdr-gap-md);
}
.sdr-calculator .sdr-field:last-child { margin-bottom: 0; }

.sdr-calculator .sdr-field-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--sdr-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.sdr-calculator .sdr-select {
  width: 100%;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  padding: 8px 30px 8px 10px;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-body);
  font-size: 13px;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235a5c62' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.sdr-calculator .sdr-select:focus { border-color: var(--sdr-accent-dim); }
.sdr-calculator .sdr-select:disabled {
  opacity: 0.4;
  cursor: default;
}

/* Process stage pills — vertical stack */
.sdr-calculator .sdr-stages {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sdr-calculator .sdr-stage-btn {
  width: 100%;
  font-family: var(--sdr-font-body);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 14px;
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  background: transparent;
  color: var(--sdr-text-tertiary);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}
.sdr-calculator .sdr-stage-btn:hover {
  color: var(--sdr-text-secondary);
  border-color: var(--sdr-text-tertiary);
}
.sdr-calculator .sdr-stage-btn.active {
  background: var(--sdr-accent);
  color: var(--sdr-text-on-accent);
  border-color: var(--sdr-accent);
}

/* Unit toggle */
.sdr-calculator .sdr-unit-toggle {
  display: inline-flex;
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  overflow: hidden;
}
.sdr-calculator .sdr-unit-btn {
  font-family: var(--sdr-font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 12px;
  border: none;
  background: transparent;
  color: var(--sdr-text-tertiary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.sdr-calculator .sdr-unit-btn.active {
  background: var(--sdr-text-primary);
  color: var(--sdr-bg-base);
}

/* HSC toggle */
.sdr-calculator .sdr-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sdr-gap-sm);
}
.sdr-calculator .sdr-toggle-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--sdr-text-secondary);
}

.sdr-calculator .sdr-toggle {
  position: relative;
  width: 36px;
  height: 20px;
  cursor: pointer;
  flex-shrink: 0;
}
.sdr-calculator .sdr-toggle input { display: none; }
.sdr-calculator .sdr-toggle-track {
  position: absolute;
  inset: 0;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  border-radius: 10px;
  transition: all 0.2s ease;
}
.sdr-calculator .sdr-toggle input:checked + .sdr-toggle-track {
  background: var(--sdr-accent);
  border-color: var(--sdr-accent);
}
.sdr-calculator .sdr-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  background: var(--sdr-text-secondary);
  border-radius: 50%;
  transition: all 0.2s ease;
  pointer-events: none;
}
.sdr-calculator .sdr-toggle input:checked ~ .sdr-toggle-thumb {
  left: 19px;
  background: var(--sdr-text-on-accent);
}

/* ============================================================
   ZONE 3 — RESULTS
   ============================================================ */
.sdr-calculator .sdr-results {
  padding: var(--sdr-gap-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sdr-gap-lg);
}

@container sdr (max-width: 800px) {
  .sdr-calculator .sdr-results {
    padding: var(--sdr-gap-md) var(--sdr-gap-lg);
  }
}

.sdr-calculator .sdr-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sdr-gap-md);
}
.sdr-calculator .sdr-results-header-left {
  display: flex;
  align-items: center;
  gap: var(--sdr-gap-md);
  min-width: 0;
}

.sdr-calculator .sdr-results-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sdr-text-tertiary);
  flex-shrink: 0;
}

/* Strategy badge */
.sdr-calculator .sdr-strategy-badge {
  display: none; /* shown via JS when a strategy is loaded */
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 10px;
  background: var(--sdr-accent-surface);
  border: 1px solid var(--sdr-accent);
  border-radius: 100px;
  color: var(--sdr-accent);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  min-width: 0;
  animation: sdrBadgeFadeIn 0.3s ease;
}
.sdr-calculator .sdr-strategy-badge.visible {
  display: inline-flex;
}
.sdr-calculator .sdr-strategy-badge svg:first-child { flex-shrink: 0; opacity: 0.7; }
.sdr-calculator .sdr-strategy-badge-name {
  overflow: hidden;
  text-overflow: ellipsis;
}
.sdr-calculator .sdr-strategy-badge-close {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--sdr-accent-dim);
  cursor: pointer;
  transition: all 0.15s ease;
}
.sdr-calculator .sdr-strategy-badge-close:hover {
  background: var(--sdr-accent-surface-hover);
  color: var(--sdr-accent-bright);
}

.sdr-calculator .sdr-results-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* ── Value grid ── */
.sdr-calculator .sdr-values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sdr-gap-md);
  position: relative;  /* anchor for formula tooltip (absolute positioning) */
}

@container sdr (max-width: 600px) {
  .sdr-calculator .sdr-values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── Value card — base ── */
.sdr-calculator .sdr-value-card {
  background: var(--sdr-bg-raised);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  padding: var(--sdr-gap-md);
  position: relative;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.sdr-calculator .sdr-value-card:focus-within {
  border-color: var(--sdr-accent-dim);
}

/* ── Card states ── */
.sdr-calculator .sdr-value-card.modified {
  border-color: var(--sdr-modified);
  background: var(--sdr-accent-surface);
  box-shadow: inset 0 0 0 1px var(--sdr-accent-surface-hover);
}

.sdr-calculator .sdr-value-card.cascade {
  border-color: var(--sdr-cascade);
  background: rgba(107, 152, 196, 0.06);
  box-shadow: inset 3px 0 0 0 var(--sdr-cascade);
}

.sdr-calculator .sdr-value-card.error {
  border-color: var(--sdr-error);
  background: rgba(196, 64, 64, 0.06);
}

.sdr-calculator .sdr-value-card.locked {
  border-color: var(--sdr-locked);
  background: var(--sdr-locked-surface);
  box-shadow: inset 0 0 0 1px var(--sdr-locked-surface-hover);
}
.sdr-calculator .sdr-value-card.locked .sdr-value-input {
  color: var(--sdr-locked);
}
.sdr-calculator .sdr-value-card.locked .sdr-value-unit {
  color: var(--sdr-locked);
  opacity: 0.6;
}

/* ── Lock button ── */
.sdr-calculator .sdr-value-lock {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--sdr-radius-sm);
  background: transparent;
  border: 1px solid var(--sdr-border);
  color: var(--sdr-text-tertiary);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
  padding: 0;
}
.sdr-calculator .sdr-value-lock:hover {
  border-color: var(--sdr-text-secondary);
  color: var(--sdr-text-secondary);
  background: var(--sdr-bg-hover);
}
.sdr-calculator .sdr-value-card.locked .sdr-value-lock {
  background: var(--sdr-locked);
  border-color: var(--sdr-locked);
  color: #fff;
}
.sdr-calculator .sdr-value-card.locked .sdr-value-lock:hover {
  background: #c97028;
  border-color: #c97028;
}

/* ── Flash animation on cascade recalc ── */
@keyframes sdrCascadeFlash {
  0%   { background: rgba(107, 152, 196, 0.18); }
  100% { background: rgba(107, 152, 196, 0.06); }
}
.sdr-calculator .sdr-value-card.cascade-flash {
  animation: sdrCascadeFlash 0.6s ease-out;
}

/* ── Label row ── */
.sdr-calculator .sdr-value-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sdr-text-tertiary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.sdr-calculator .sdr-value-label-text { flex: 1; }
.sdr-calculator .sdr-value-card.locked .sdr-value-label {
  color: var(--sdr-locked);
  opacity: 0.8;
}

/* ── Reset button ── */
.sdr-calculator .sdr-value-reset {
  display: none;
  background: none;
  border: none;
  color: var(--sdr-text-tertiary);
  cursor: pointer;
  padding: 2px;
  line-height: 1;
}
.sdr-calculator .sdr-value-card.modified .sdr-value-reset,
.sdr-calculator .sdr-value-card.cascade .sdr-value-reset,
.sdr-calculator .sdr-value-card.locked .sdr-value-reset {
  display: block;
}
.sdr-calculator .sdr-value-reset:hover { color: var(--sdr-accent); }

/* ── Input row ── */
.sdr-calculator .sdr-value-input-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.sdr-calculator .sdr-value-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-mono);
  font-size: 22px;
  font-weight: 600;
  outline: none;
  width: 100%;
  min-width: 0;
}
.sdr-calculator .sdr-value-card.modified .sdr-value-input {
  color: var(--sdr-accent);
}
.sdr-calculator .sdr-value-card.cascade .sdr-value-input {
  font-style: italic;
  color: var(--sdr-cascade);
}
.sdr-calculator .sdr-value-unit {
  font-size: 12px;
  color: var(--sdr-text-tertiary);
  font-weight: 500;
  flex-shrink: 0;
}

/* ── System reference value ── */
.sdr-calculator .sdr-value-system {
  font-size: 11px;
  color: var(--sdr-text-tertiary);
  margin-top: 2px;
  font-family: var(--sdr-font-mono);
  display: none;
}
.sdr-calculator .sdr-value-card.modified .sdr-value-system,
.sdr-calculator .sdr-value-card.cascade .sdr-value-system,
.sdr-calculator .sdr-value-card.locked .sdr-value-system {
  display: block;
}

/* ── Origin indicator ── */
.sdr-calculator .sdr-value-origin {
  font-size: 10px;
  color: var(--sdr-text-tertiary);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 14px;
}
.sdr-calculator .sdr-value-origin:empty { display: none; }

.sdr-calculator .sdr-origin-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.sdr-calculator .sdr-origin-dot.modified-dot { background: var(--sdr-accent); }
.sdr-calculator .sdr-origin-dot.cascade-dot  { background: var(--sdr-cascade); }
.sdr-calculator .sdr-origin-dot.locked-dot   { background: var(--sdr-locked); }

/* ── Results content — flex column with gaps ── */
.sdr-calculator #sdr-results-content {
  display: flex;
  flex-direction: column;
  gap: var(--sdr-gap-lg);
}

/* ── Bottom area — flex column, children are individual cards ── */
.sdr-calculator .sdr-bottom-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Note area ── */
.sdr-calculator .sdr-note-area {
  background: var(--sdr-bg-raised);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  padding: var(--sdr-gap-md);
}
.sdr-calculator .sdr-note-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--sdr-text-tertiary);
  margin-bottom: 4px;
}
.sdr-calculator .sdr-note-label-user {
  margin-top: var(--sdr-gap-sm);
  padding-top: var(--sdr-gap-sm);
  border-top: 1px solid var(--sdr-border-subtle);
}
.sdr-calculator .sdr-note-system {
  font-size: 12px;
  color: var(--sdr-text-tertiary);
  font-style: italic;
  margin-bottom: var(--sdr-gap-sm);
  padding-bottom: var(--sdr-gap-sm);
  border-bottom: 1px solid var(--sdr-border-subtle);
}
.sdr-calculator .sdr-note-input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-body);
  font-size: 13px;
  outline: none;
  resize: vertical;
  min-height: 60px;
  padding: 6px 8px;
  box-sizing: border-box;
}
.sdr-calculator .sdr-note-input::placeholder { color: var(--sdr-text-tertiary); }

/* ── Save bar ── */
.sdr-calculator .sdr-save-bar {
  display: flex;
  align-items: center;
  gap: var(--sdr-gap-md);
  padding: var(--sdr-gap-md);
  background: var(--sdr-bg-raised);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
}
.sdr-calculator .sdr-save-bar input {
  flex: 1;
  background: var(--sdr-bg-input);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-sm);
  padding: 8px 12px;
  color: var(--sdr-text-primary);
  font-family: var(--sdr-font-body);
  font-size: 13px;
  outline: none;
}
.sdr-calculator .sdr-save-bar input:focus {
  border-color: var(--sdr-accent-dim);
}
.sdr-calculator .sdr-save-bar input::placeholder { color: var(--sdr-text-tertiary); }

/* ── Save success overlay ─────────────────────────────────────────────────── */
.sdr-calculator [data-sdr-action="save-strategy"] {
  position: relative;
  overflow: hidden;
}
.sdr-calculator .sdr-save-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: #22c55e;
  color: #fff;
  font-weight: 600;
  border-radius: inherit;
  pointer-events: none;
  animation: sdr-overlay-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.sdr-calculator .sdr-save-overlay.out {
  animation: sdr-overlay-out 0.35s ease forwards;
}
.sdr-calculator .sdr-save-overlay svg {
  animation: sdr-check-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s both;
}
@keyframes sdr-overlay-in {
  from { opacity: 0; transform: scale(0.82); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes sdr-overlay-out {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(1.06); }
}
@keyframes sdr-check-pop {
  from { transform: scale(0) rotate(-25deg); }
  to   { transform: scale(1) rotate(0deg); }
}

/* ── Override row ── */
.sdr-calculator .sdr-override-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sdr-gap-sm) var(--sdr-gap-md);
  background: var(--sdr-bg-raised);
  border: 1px solid var(--sdr-border-subtle);
  border-radius: var(--sdr-radius-sm);
  font-size: 12px;
  color: var(--sdr-text-tertiary);
}

/* ============================================================
   EMPTY STATE (no tool selected)
   ============================================================ */
.sdr-calculator .sdr-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px var(--sdr-gap-lg);
  text-align: center;
  color: var(--sdr-text-tertiary);
}
.sdr-calculator .sdr-empty-icon {
  margin-bottom: var(--sdr-gap-md);
  opacity: 0.3;
}
.sdr-calculator .sdr-empty-text {
  font-size: 14px;
  max-width: 300px;
  line-height: 1.6;
}

/* ============================================================
   LANGUAGE DROPDOWN
   ============================================================ */
.sdr-calculator .sdr-lang-btn {
  position: relative;
}

.sdr-calculator .sdr-lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--sdr-bg-overlay);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  padding: 4px;
  z-index: 300;
  display: none;
  min-width: 140px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.sdr-calculator .sdr-lang-dropdown.open {
  display: block;
}

.sdr-calculator .sdr-lang-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 12px;
  font-family: var(--sdr-font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--sdr-text-secondary);
  cursor: pointer;
  border-radius: var(--sdr-radius-sm);
  transition: all 0.1s ease;
  text-align: left;
  background: transparent;
  border: none;
  white-space: nowrap;
}
.sdr-calculator .sdr-lang-option:hover {
  background: var(--sdr-bg-hover);
  color: var(--sdr-text-primary);
}
.sdr-calculator .sdr-lang-option.active {
  color: var(--sdr-accent);
}
.sdr-calculator .sdr-lang-option .sdr-lang-flag {
  font-family: var(--sdr-font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--sdr-text-tertiary);
  min-width: 24px;
}
.sdr-calculator .sdr-lang-option.active .sdr-lang-flag {
  color: var(--sdr-accent);
}

/* ============================================================
   HEADER SEPARATOR
   ============================================================ */
.sdr-calculator .sdr-header-sep {
  width: 1px;
  height: 20px;
  background: var(--sdr-border);
  margin: 0 4px;
  flex-shrink: 0;
}

/* ============================================================
   RESPONSIVE (mobile container queries)
   ============================================================ */
@container sdr (max-width: 800px) {
  .sdr-calculator .sdr-tool-card { flex-direction: column; }
  .sdr-calculator .sdr-tool-image { width: 100%; height: 48px; }
  .sdr-calculator .sdr-tool-actions { align-self: flex-start; }
  .sdr-calculator .sdr-strategy-row {
    grid-template-columns: 1fr 1fr auto;
  }
  .sdr-calculator .sdr-strategy-row .hide-mobile { display: none; }
  .sdr-calculator .sdr-header { flex-wrap: wrap; }
  .sdr-calculator .sdr-save-bar { flex-direction: column; align-items: stretch; border-top: 1px solid var(--sdr-border-subtle); }
}

/* ============================================================
   ANIMATIONS (prefixed to avoid conflicts with WP theme)
   ============================================================ */
@keyframes sdrSlideDown {
  from { opacity: 0; max-height: 0; }
  to   { opacity: 1; max-height: 800px; }
}

@keyframes sdrBadgeFadeIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
.sdr-calculator ::-webkit-scrollbar { width: 6px; }
.sdr-calculator ::-webkit-scrollbar-track { background: transparent; }
.sdr-calculator ::-webkit-scrollbar-thumb {
  background: var(--sdr-border);
  border-radius: 3px;
}
.sdr-calculator ::-webkit-scrollbar-thumb:hover { background: var(--sdr-text-tertiary); }

/* ============================================================
   LOADING SPINNER — shown during async JSON fetch
   ============================================================ */
.sdr-calculator .sdr-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 0;
}

.sdr-calculator .sdr-loading span {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--sdr-border);
  border-top-color: var(--sdr-accent);
  border-radius: 50%;
  animation: sdr-spin 0.75s linear infinite;
}

@keyframes sdr-spin {
  to { transform: rotate(360deg); }
}

.sdr-calculator .sdr-loading-error {
  padding: 12px 16px;
  color: #e08330;
  font-family: sans-serif;
  font-size: 13px;
}

/* ============================================================
   INPUT FOCUS — override theme white background in dark mode
   ============================================================ */
.sdr-calculator input:focus,
.sdr-calculator input:focus-visible,
.sdr-calculator textarea:focus,
.sdr-calculator textarea:focus-visible {
  background-color: var(--sdr-bg-overlay) !important;
  color: var(--sdr-text-primary) !important;
  outline: none;
}

/* ============================================================
   UTILITY — hide/show helpers
   ============================================================ */
.sdr-calculator .sdr-hidden { display: none !important; }
.sdr-calculator .sdr-visible-loggedin { display: none; }
/* For flex containers using sdr-visible-loggedin, restore the correct display type explicitly */
.sdr-calculator.is-logged-in .sdr-save-bar { display: flex; }

/* =========================================================
   MODE MINIMAL
   ========================================================= */

.sdr-calculator--minimal {
    display: flex;
    flex-direction: column;
    gap: 0;
    width: 100%;
    font-family: var(--sdr-font-body);
    border: 1px solid var(--sdr-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--sdr-bg-base);
    color: var(--sdr-text-primary);
}

/* Identity */
.sdr-calculator--minimal .sdr-mini-identity {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--sdr-border);
    background: var(--sdr-bg-raised);
}

.sdr-calculator--minimal .sdr-tool-image {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sdr-calculator--minimal .sdr-tool-image img {
    position: static;
    top: auto;
    left: auto;
    height: auto;
    width: auto;
    max-width: 100%;
    max-height: 100%;
    transform: none;
    object-fit: contain;
}

.sdr-calculator--minimal .sdr-tool-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

/* Selects */
.sdr-calculator--minimal .sdr-mini-selects {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 12px 16px;
    border-bottom: 1px solid var(--sdr-border);
}

.sdr-calculator--minimal .sdr-field {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px solid var(--sdr-border-subtle, var(--sdr-border));
}

.sdr-calculator--minimal .sdr-field:last-child {
    border-bottom: none;
}

.sdr-calculator--minimal .sdr-label {
    flex: 0 0 130px;
    font-size: 12px;
    color: var(--sdr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sdr-calculator--minimal .sdr-select {
    flex: 1;
    min-width: 0;
    font-size: 13px;
}

/* Stage pills section */
.sdr-calculator--minimal #sdr-stages-section {
    padding: 8px 16px 10px;
    border-bottom: 1px solid var(--sdr-border);
}

.sdr-calculator--minimal #sdr-stages-section.sdr-hidden {
    display: none;
}

.sdr-calculator--minimal .sdr-mini-stage-label {
    font-size: 11px;
    color: var(--sdr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

/* Results */
.sdr-calculator--minimal .sdr-mini-results {
    padding: 12px 16px;
    border-bottom: 1px solid var(--sdr-border);
}

/* Footer */
.sdr-calculator--minimal .sdr-mini-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    gap: 10px;
}

.sdr-calculator--minimal .sdr-mini-fulllink {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: var(--sdr-accent);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.15s;
}

.sdr-calculator--minimal .sdr-mini-fulllink:hover {
    opacity: 0.75;
}

/* ============================================================
   FORMULA TOOLTIP — icône calculatrice + tooltip coloré
   ============================================================ */

/* ── Formula button (same style as lock button) ── */
.sdr-calculator .sdr-value-formula-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--sdr-radius-sm);
  background: transparent;
  border: 1px solid var(--sdr-border);
  color: var(--sdr-text-tertiary);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
  padding: 0;
}
.sdr-calculator .sdr-value-formula-btn:hover {
  border-color: var(--sdr-text-secondary);
  color: var(--sdr-text-secondary);
  background: var(--sdr-bg-hover);
}
.sdr-calculator .sdr-value-formula-btn.active {
  border-color: var(--sdr-accent-dim);
  color: var(--sdr-accent);
  background: var(--sdr-accent-surface);
}

/* ── Formula tooltip ── */
.sdr-calculator .sdr-formula-tooltip {
  position: absolute;
  z-index: 400;
  background: var(--sdr-bg-overlay);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  padding: 10px 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  pointer-events: none;
  white-space: nowrap;
  font-family: var(--sdr-font-mono);
  font-size: 13px;
  line-height: 1.6;
}

/* ── Formula expression tokens ── */
.sdr-calculator .sdr-formula-expr {
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: 0;
}
.sdr-calculator .sdr-formula-token {
  font-weight: 600;
}
.sdr-calculator .sdr-formula-token[style] {
  /* colored tokens — no additional override needed */
}

/* ── Dim / highlight states ── */
.sdr-calculator .sdr-value-card.sdr-formula-dim {
  opacity: 0.35;
  transition: opacity 0.2s ease;
}
.sdr-calculator .sdr-value-card.sdr-formula-highlight {
  border-color: var(--sdr-formula-highlight-color, var(--sdr-accent));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--sdr-formula-highlight-color, var(--sdr-accent)) 20%, transparent);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
/* Fallback for browsers without color-mix */
@supports not (color: color-mix(in srgb, red 20%, transparent)) {
  .sdr-calculator .sdr-value-card.sdr-formula-highlight {
    box-shadow: 0 0 0 2px var(--sdr-formula-highlight-color, var(--sdr-accent));
    opacity: 0.8;
  }
}

/* ============================================================
   STAGE INFO TOOLTIP — ℹ icon + popover (F3)
   ============================================================ */

/* Wrapper around each stage pill + its icon */
.sdr-calculator .sdr-stage-pill-wrap {
  display: flex;
  align-items: center;
  position: relative;
  width: 100%;
}

/* Stage button fills available space inside the wrap */
.sdr-calculator .sdr-stage-pill-wrap .sdr-stage-btn {
  flex: 1;
  width: auto;
}

/* ℹ info icon next to stage button */
.sdr-calculator .sdr-stage-info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 3px;
  width: 16px;
  height: 16px;
  font-size: 13px;
  line-height: 1;
  color: var(--sdr-text-secondary);
  cursor: pointer;
  border-radius: 50%;
  transition: color 0.15s ease;
  flex-shrink: 0;
  user-select: none;
}

.sdr-calculator .sdr-stage-info-icon:hover,
.sdr-calculator .sdr-stage-info-icon:focus {
  color: var(--sdr-accent);
  outline: none;
}

/* Popover card */
.sdr-calculator .sdr-stage-popover {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  background: var(--sdr-bg-overlay);
  border: 1px solid var(--sdr-border);
  border-radius: var(--sdr-radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  padding: 10px 12px;
  max-width: 280px;
  min-width: 140px;
  pointer-events: none;
}

.sdr-calculator .sdr-stage-popover__img {
  display: block;
  width: 100%;
  max-width: 256px;
  border-radius: var(--sdr-radius-sm);
  margin-bottom: 8px;
}

.sdr-calculator .sdr-stage-popover__text {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--sdr-text-primary);
  white-space: normal;
}

/* Light theme adjustments */
.sdr-calculator[data-sdr-theme="light"] .sdr-stage-popover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* ============================================================
   MATERIAL BRAND HINTS — info zone below the material select (F4)
   ============================================================ */

.sdr-calculator .sdr-material-brand-info {
  margin-top: 6px;
  padding: 8px 10px;
  background: var(--sdr-bg-overlay);
  border: 1px solid var(--sdr-border-subtle);
  border-radius: var(--sdr-radius-sm);
  font-size: 12px;
  line-height: 1.5;
  color: var(--sdr-text-secondary);
}

.sdr-calculator .sdr-material-brand-info__title {
  font-weight: 600;
  color: var(--sdr-text-primary);
  margin: 0 0 4px;
  font-size: 12px;
}

.sdr-calculator .sdr-material-brand-info__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sdr-calculator .sdr-material-brand-info__item {
  display: flex;
  gap: 4px;
  align-items: baseline;
}

.sdr-calculator .sdr-material-brand-info__brand {
  color: var(--sdr-text-primary);
  font-weight: 500;
  white-space: nowrap;
}

.sdr-calculator .sdr-material-brand-info__sep {
  color: var(--sdr-text-secondary);
  flex-shrink: 0;
}

.sdr-calculator .sdr-material-brand-info__grade {
  color: var(--sdr-text-secondary);
}

/* ── Toast notifications ─────────────────────────────────────────────────── */

.sdr-toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.sdr-toast {
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .30);
  opacity: 1;
  transform: translateY(0);
  transition: opacity .3s ease, transform .3s ease;
  pointer-events: auto;
}

.sdr-toast--success { background: var(--sdr-success); }
.sdr-toast--error   { background: #c0392b; }

.sdr-toast--hiding {
  opacity: 0;
  transform: translateY(8px);
}