/* ==========================================================================
   FLUXO — EXECUTIVE MINIMALIST TASK & WORKFLOW SYSTEM
   Design System: Master Documents Luxury Monochrome
   Palette: White (#FFFFFF), Off-White (#F6F6F8), Grey (#E0E0E6, #737580), Black (#141416)
   Typography: SF Pro / Inter + JetBrains Mono
   Platform: Computer & Tablet Optimized
   ========================================================================== */

:root {
  --bg-app: #F6F6F8;
  --surface-card: #FFFFFF;
  --surface-secondary: #EEEEF2;
  --surface-tertiary: #E6E6EB;
  
  --border-hairline: #E0E0E6;
  --border-subtle: #ECECEF;
  --border-strong: #141416;
  
  --text-primary: #141416;
  --text-secondary: #737580;
  --text-tertiary: #A6A8B2;
  --text-inverse: #FFFFFF;
  
  --accent-black: #141416;
  --badge-bg: #ECECEF;
  --badge-text: #202226;

  /* Verified / Completed Dark Aesthetic (Task #9978 Requirement) */
  --card-verified-bg: #141416;
  --card-verified-border: #26262B;
  --card-verified-text-primary: #F4F4F6;
  --card-verified-text-secondary: #8E8E93;
  --card-verified-badge-bg: #222226;
  --card-verified-badge-text: #D1D1D6;
  --card-verified-checkmark-bg: #FFFFFF;
  --card-verified-checkmark-color: #141416;

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.03), 0 2px 8px rgba(0, 0, 0, 0.02);
  --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.03), 0 8px 24px rgba(0, 0, 0, 0.03);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.06), 0 12px 28px rgba(0, 0, 0, 0.04);
  --shadow-modal: 0 20px 48px rgba(20, 20, 22, 0.12), 0 4px 16px rgba(20, 20, 22, 0.06);

  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.45;
  overflow-x: hidden;
}

/* ─── App Container ────────────────────────────────────────────────────────── */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
  background-color: var(--bg-app);
}

/* ─── Top Executive Header (Master Documents Architecture) ─────────────────── */
.top-bar {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-hairline);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  width: 100%;
}

.top-bar-inner {
  max-width: 1800px;
  margin: 0 auto;
  padding: 12px 24px 8px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Row 1: Brand Header */
.header-row-1 {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
}

.brand-title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--accent-black);
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 9px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--text-tertiary);
  margin-top: 1px;
}

/* Row 2: Control Strip */
.header-row-2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Left: User Profile & Metrics */
.header-left {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-shrink: 0;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background-color: var(--accent-black);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid var(--border-hairline);
  box-shadow: var(--shadow-subtle);
}

.user-meta {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.user-role-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.metrics-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--surface-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
}

.metric-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.metric-num {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent-black);
}

.metric-lbl {
  font-size: 9px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
}

.metric-divider {
  width: 1px;
  height: 14px;
  background-color: var(--border-hairline);
}

/* Center: Keyboard Quick Add Bar */
.header-center {
  flex: 1;
  max-width: 680px;
}

.quick-add-container {
  display: flex;
  align-items: center;
  background-color: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 2px 12px 2px 10px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-subtle);
}

.quick-add-container:focus-within {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 1px var(--border-strong), var(--shadow-subtle);
}

.quick-add-icon {
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  margin-right: 8px;
}

.quick-add-input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-primary);
  padding: 6px 0;
  outline: none;
}

.quick-add-input::placeholder {
  color: var(--text-tertiary);
  font-size: 12px;
}

.quick-add-hints {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  color: var(--text-tertiary);
  margin-left: 10px;
}

.kbd-pill {
  display: inline-block;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.hint-separator {
  color: var(--text-tertiary);
}

.hint-action {
  font-size: 10px;
  color: var(--text-secondary);
}

/* Right: Search, Shortcuts & CTA */
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 9px;
  color: var(--text-tertiary);
  pointer-events: none;
}

.global-search-input {
  background-color: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 6px 12px 6px 28px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-primary);
  outline: none;
  width: 140px;
  transition: width var(--transition-normal), border-color var(--transition-fast);
}

.global-search-input:focus {
  width: 190px;
  border-color: var(--border-strong);
}

.global-search-input::placeholder {
  color: var(--text-tertiary);
}

.btn-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hairline);
  background: #FFFFFF;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.kbd-char {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background-color: var(--accent-black);
  color: var(--text-inverse);
  border: 1px solid var(--accent-black);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-subtle);
}

.btn-primary:hover {
  background-color: #26262B;
  border-color: #26262B;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background-color: #FFFFFF;
  color: var(--text-primary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--surface-secondary);
  border-color: var(--text-secondary);
}

/* ─── Filter Subbar ────────────────────────────────────────────────────────── */
.filter-bar {
  border-top: 1px solid var(--border-subtle);
  background: #FFFFFF;
  padding: 6px 24px;
}

.filter-bar-inner {
  max-width: 1800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.filter-label {
  font-size: 10px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-right: 2px;
}

.filter-pill {
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-hairline);
  background: #FFFFFF;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
}

.filter-pill.active {
  background-color: var(--accent-black);
  border-color: var(--accent-black);
  color: var(--text-inverse);
  font-weight: 600;
}

.filter-divider {
  width: 1px;
  height: 14px;
  background-color: var(--border-hairline);
}

.filter-spacer {
  flex: 1;
}

.keyboard-legend {
  display: flex;
  align-items: center;
  gap: 14px;
}

.legend-tip {
  font-size: 11px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 5px;
}

.legend-tip kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 1px 5px;
  background: var(--surface-secondary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
}

/* ─── Kanban Board Grid ────────────────────────────────────────────────────── */
.kanban-wrapper {
  flex: 1;
  padding: 24px;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.kanban-board {
  display: grid;
  grid-template-columns: repeat(5, minmax(280px, 1fr));
  gap: 20px;
  align-items: start;
  min-height: calc(100vh - 200px);
}

/* ─── Kanban Column ────────────────────────────────────────────────────────── */
.kanban-column {
  background-color: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 180px);
  box-shadow: var(--shadow-subtle);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.kanban-column.drop-target-active {
  border-color: var(--border-strong);
  background-color: #FAFAFC;
}

/* Column Header */
.column-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #FFFFFF;
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
}

.column-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.column-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.column-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-full);
  padding: 1px 7px;
  border: 1px solid var(--border-hairline);
}

.column-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-col-add {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-col-add:hover {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
  border-color: var(--border-hairline);
}

/* Inline Quick-Add Box in Column */
.column-inline-add {
  padding: 10px 14px;
  background-color: var(--surface-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.inline-add-input {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-primary);
  outline: none;
  box-sizing: border-box;
}

.inline-add-input:focus {
  border-color: var(--border-strong);
}

.inline-add-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 6px;
}

.btn-inline-submit {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  background-color: var(--accent-black);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
}

.btn-inline-cancel {
  padding: 4px 8px;
  font-size: 11px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
}

/* Tasks Container (Drop zone) */
.column-cards-container {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  flex: 1;
  min-height: 120px;
}

.column-empty-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 10px;
  border: 1px dashed var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  font-size: 11px;
  text-align: center;
}

/* ─── Drop Target Indicators ───────────────────────────────────────────────── */
.drop-indicator-line {
  height: 2px;
  background-color: var(--accent-black);
  border-radius: var(--radius-full);
  margin: -4px 0;
  position: relative;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.drop-indicator-line::before {
  content: '';
  position: absolute;
  left: -3px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--accent-black);
}

/* ─── Task Card (Master Documents Architecture) ────────────────────────────── */
.task-card {
  background-color: var(--surface-card);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: grab;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-normal);
  user-select: none;
}

.task-card:hover {
  border-color: #C8C8D0;
  box-shadow: var(--shadow-card-hover);
}

.task-card:active {
  cursor: grabbing;
}

.task-card.is-dragging {
  opacity: 0.4;
  transform: scale(0.97);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
  border: 1px dashed var(--accent-black);
}

/* Card Top Strip */
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.card-top-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-id {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.card-category-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  background-color: var(--surface-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-hairline);
  text-transform: uppercase;
}

.card-priority-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  border: 1px solid var(--border-hairline);
  background-color: var(--surface-secondary);
  color: var(--text-secondary);
}

.card-priority-badge.priority-critical {
  background-color: #FEE2E2;
  border-color: #FECACA;
  color: #DC2626;
}

.card-priority-badge.priority-urgent {
  background-color: #FEF3C7;
  border-color: #FDE68A;
  color: #D97706;
}

.card-priority-badge.priority-high {
  background-color: #FEF9C3;
  border-color: #FEF08A;
  color: #CA8A04;
}

/* Card Title */
.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  word-break: break-word;
  transition: color var(--transition-fast);
}

/* Card Notes Preview (if exists) */
.card-notes-preview {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  background-color: var(--surface-secondary);
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  border-left: 2px solid var(--border-hairline);
}

/* Card Bottom Strip */
.card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding-top: 6px;
  border-top: 1px solid var(--border-subtle);
}

.card-assignee-info {
  display: flex;
  align-items: center;
  gap: 6px;
}

.assignee-avatar-sm {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  color: var(--text-primary);
}

.assignee-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  max-width: 130px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── The Verification Checkmark Button ─────────────────────────────────────── */
.card-verify-btn {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-hairline);
  background-color: #FFFFFF;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  padding: 0;
}

.card-verify-btn:hover {
  border-color: var(--accent-black);
  color: var(--accent-black);
  transform: scale(1.08);
}

/* ==========================================================================
   TASK #9978 CRITICAL REQUIREMENT:
   Visual effect for completed tasks (getting darker/faded) must trigger ONLY
   when the checkmark is explicitly clicked to verify and complete, not automatically.
   ========================================================================== */
.task-card.is-verified {
  background-color: var(--card-verified-bg) !important;
  border-color: var(--card-verified-border) !important;
  color: var(--card-verified-text-primary) !important;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.task-card.is-verified .card-id {
  color: var(--card-verified-text-secondary);
}

.task-card.is-verified .card-title {
  color: var(--card-verified-text-primary);
  text-decoration: line-through;
  opacity: 0.85;
}

.task-card.is-verified .card-category-badge {
  background-color: var(--card-verified-badge-bg);
  border-color: #333338;
  color: var(--card-verified-badge-text);
}

.task-card.is-verified .card-priority-badge {
  background-color: var(--card-verified-badge-bg);
  border-color: #333338;
  color: var(--card-verified-badge-text);
}

.task-card.is-verified .card-notes-preview {
  background-color: #1C1D21;
  border-left-color: #38383E;
  color: var(--card-verified-text-secondary);
}

.task-card.is-verified .card-bottom {
  border-top-color: #26262B;
}

.task-card.is-verified .assignee-avatar-sm {
  background-color: #26262B;
  border-color: #38383E;
  color: #FFFFFF;
}

.task-card.is-verified .assignee-name {
  color: var(--card-verified-text-secondary);
}

/* Verified Checkmark State */
.task-card.is-verified .card-verify-btn {
  background-color: #FFFFFF !important;
  border-color: #FFFFFF !important;
  color: var(--accent-black) !important;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

.task-card.is-verified .card-verify-btn:hover {
  background-color: #F0F0F2 !important;
  transform: scale(1.1);
}

/* ─── Modals (Master Documents Luxury Dialogs) ──────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 20, 22, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-container {
  background: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalPopIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-container-sm {
  max-width: 440px;
}

@keyframes modalPopIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(6px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  background-color: var(--surface-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
  color: var(--text-secondary);
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--surface-secondary);
  color: var(--text-primary);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.col-half {
  flex: 1;
}

.form-label {
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.form-input, .form-textarea, .form-select {
  background-color: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
  width: 100%;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--border-strong);
}

.form-textarea {
  resize: vertical;
}

.form-textarea-notes {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Verified Toggle in Modal */
.form-verified-row {
  padding: 12px;
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
}

.verified-toggle-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.form-checkbox {
  display: none;
}

.verified-toggle-box {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  transition: all var(--transition-fast);
}

.form-checkbox:checked + .verified-toggle-box {
  background-color: var(--accent-black);
  border-color: var(--accent-black);
  color: #FFFFFF;
}

.verified-toggle-text {
  display: flex;
  flex-direction: column;
}

.verified-toggle-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.verified-toggle-desc {
  font-size: 11px;
  color: var(--text-secondary);
}

.modal-footer {
  padding-top: 8px;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-footer-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-danger-text {
  background: transparent;
  border: none;
  color: #DC2626;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 0;
  transition: opacity var(--transition-fast);
}

.btn-danger-text:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ─── Shortcuts Cheatsheet Body ────────────────────────────────────────────── */
.shortcuts-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcut-item:last-child {
  border-bottom: none;
}

.shortcut-desc {
  font-size: 13px;
  color: var(--text-primary);
}

.shortcut-keys {
  display: flex;
  align-items: center;
  gap: 6px;
}

.shortcut-keys kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
}

/* ─── Settings Dropdown ────────────────────────────────────────────────────── */
.settings-dropdown {
  position: fixed;
  top: 70px;
  right: 24px;
  background: #FFFFFF;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  width: 220px;
  z-index: 200;
  overflow: hidden;
  animation: modalPopIn 0.15s ease;
}

.dropdown-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dropdown-title {
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  text-transform: uppercase;
}

.dropdown-version {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
}

.dropdown-list {
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 12px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast);
  width: 100%;
}

.dropdown-item:hover {
  background-color: var(--surface-secondary);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--border-hairline);
  margin: 4px 0;
}

/* ─── Toast Notifications ──────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background-color: var(--accent-black);
  color: #FFFFFF;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  box-shadow: var(--shadow-modal);
  pointer-events: auto;
  animation: toastSlide 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 8px;
}

@keyframes toastSlide {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   PLATFORM OPTIMIZATIONS (Computer & Tablet)
   ========================================================================== */

/* Computer Ultra-wide / Large Screen (1600px+) */
@media (min-width: 1600px) {
  .kanban-board {
    gap: 24px;
  }
  .task-card {
    padding: 14px 16px;
  }
}

/* Tablet Landscape / Medium Screen (1024px to 1280px) */
@media (max-width: 1280px) {
  .kanban-board {
    grid-template-columns: repeat(5, 290px);
    overflow-x: auto;
    padding-bottom: 20px;
  }
  .header-center {
    max-width: 440px;
  }
}

/* Tablet Portrait & Small Screens (768px to 1024px) */
@media (max-width: 1024px) {
  .top-bar-inner {
    padding: 10px 16px;
  }
  .header-row-2 {
    flex-wrap: wrap;
    gap: 12px;
  }
  .header-center {
    order: 3;
    max-width: 100%;
    flex: 1 1 100%;
  }
  .kanban-wrapper {
    padding: 16px;
  }
  .kanban-board {
    grid-template-columns: repeat(5, 280px);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 24px;
    -webkit-overflow-scrolling: touch;
  }
  .kanban-column {
    scroll-snap-align: start;
    min-height: 500px;
  }
  .filter-bar {
    padding: 6px 16px;
  }
  .keyboard-legend {
    display: none;
  }
}

/* Mobile Fallback (< 768px) */
@media (max-width: 767px) {
  .metrics-strip {
    display: none;
  }
  .search-input-wrapper {
    display: none;
  }
  .filter-bar-inner {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }
  .kanban-board {
    grid-template-columns: repeat(5, 85vw);
  }
}