/**
 * styles.css
 * Complete stylesheet for the Timeline / Gantt Chart SPA.
 * Uses CSS custom properties for light/dark theming.
 */

/* ===========================
   CSS Variables — Site Chrome (light/dark website theme)
   The Gantt chart uses the separate --gantt-* set below, so the
   website theme does NOT affect the chart theme.
   =========================== */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f7fa;
  --bg-tertiary: #e8ecf0;
  --text-primary: #1a1a2e;
  --text-secondary: #666666;
  --border-color: #e0e0e0;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --bar-actual: #1976d2;
  --overdue-color: #e53935;
}

[data-theme='dark'] {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border-color: #2a2a4a;
  --shadow: 0 2px 8px rgba(0,0,0,0.4);
  --bar-actual: #2979ff;
  --overdue-color: #ff5252;
}

/* ===========================
   CSS Variables — Gantt Theme (defaults = Azul / light)
   Applied to <body> by themes.js (GanttThemes.apply). Each theme
   overrides these to fully re-skin the chart independent of the
   website theme. See README → "Theme SDK".
   =========================== */
:root {
  --gantt-bg: #ffffff;
  --gantt-bg-secondary: #f5f7fa;
  --gantt-bg-tertiary: #e8ecf0;
  --gantt-text: #1a1a2e;
  --gantt-text-secondary: #666666;
  --gantt-border: #e0e0e0;
  --gantt-grid-line: #f0f0f0;
  --gantt-grid-monday: #d0d0d0;
  --gantt-weekend-bg: rgba(0,0,0,0.02);
  --gantt-phase-bg: #e3f2fd;
  --gantt-phase-text: #1565c0;
  --gantt-today: #e53935;
  --gantt-arrow: #ff9800;
  --gantt-overdue: #e53935;
  --gantt-shadow: 0 2px 8px rgba(0,0,0,0.1);
  --gantt-tooltip-bg: #333333;
  --gantt-tooltip-text: #ffffff;
  --gantt-callout-bg: #fffde7;
  --gantt-callout-border: #fbc02d;
  --gantt-callout-text: #5d4e00;
  --bar-planned: #90caf9;
  --bar-planned-border: rgba(0,0,0,0.4);
  --bar-progress-fill: #1976d2;
  --bar-progress-remaining: #bbdefb;
  --bar-inprogress-fill: #f57c00;
  --bar-inprogress-remaining: #ffe0b2;
  --bar-notstarted-fill: #546e7a;
  --bar-behind-fill: #ffc107;
  --progress-text-color: #ffffff;
  --phase-0-fill: #1976d2; --phase-0-light: #bbdefb; --phase-0-planned: #90caf9;
  --phase-1-fill: #50b87e; --phase-1-light: #a8e6c5; --phase-1-planned: #7ed4a4;
  --phase-2-fill: #e6854a; --phase-2-light: #f5c9a8; --phase-2-planned: #eda774;
  --phase-3-fill: #9b59b6; --phase-3-light: #d2a8e6; --phase-3-planned: #b97fd4;
  --phase-4-fill: #e74c3c; --phase-4-light: #f5a8a2; --phase-4-planned: #ee7b70;
  --phase-5-fill: #f39c12; --phase-5-light: #f9d88c; --phase-5-planned: #f6b84e;
}

/* ===========================
   Base / Reset
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ===========================
   Header
   =========================== */
/* ===========================
   Toolbar
   =========================== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-wrap: wrap;
}

.toolbar-spacer {
  flex: 1;
}

.file-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

/* ===========================
   Buttons & Filter
   =========================== */
.btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9em;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--bg-tertiary);
}

.filter-select {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9em;
}

.theme-toggle {
  font-size: 1.4em;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  line-height: 1;
}

/* ===========================
   Paste Area
   =========================== */
.paste-area {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.paste-area-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.85em;
  color: var(--text-secondary);
}

.paste-area-actions {
  display: flex;
  gap: 8px;
}

.paste-input {
  width: 100%;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  resize: vertical;
  tab-size: 4;
}

.paste-input:focus {
  outline: 2px solid var(--bar-actual);
  border-color: transparent;
}

/* ===========================
   Project Summary
   =========================== */
.project-summary {
  padding: 12px 20px;
  border-bottom: 1px solid var(--gantt-border);
  background: var(--gantt-bg-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  font-size: 0.85em;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.summary-label {
  color: var(--gantt-text-secondary);
}

.summary-value {
  font-weight: 600;
  color: var(--gantt-text);
}

.summary-value.on-track {
  color: #4caf50;
}

.summary-value.behind {
  color: #e53935;
}

.summary-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.85em;
  font-weight: 600;
}

.summary-badge.completed {
  background: rgba(25, 118, 210, 0.15);
  color: #1976d2;
}

.summary-badge.in-progress {
  background: rgba(245, 124, 0, 0.15);
  color: #f57c00;
}

.summary-badge.not-started {
  background: rgba(84, 110, 122, 0.15);
  color: #78909c;
}

.summary-badge.delayed {
  background: rgba(229, 57, 53, 0.15);
  color: #e53935;
}

/* ===========================
   Gantt Container
   =========================== */
.gantt-container {
  overflow: auto;
  position: relative;
  padding: 0;
  flex: 1;
  background: var(--gantt-bg);
  font-family: var(--gantt-font, inherit);
}

/* ===========================
   Gantt Wrapper (Grid: labels | chart)
   =========================== */
.gantt-wrapper {
  display: grid;
  min-width: max-content;
  position: relative;
}

/* ===========================
   Labels Column (Left - Sticky)
   =========================== */
.gantt-labels {
  position: sticky;
  left: 0;
  z-index: 10;
  background: var(--gantt-bg);
  border-right: 1px solid var(--gantt-border);
}

.gantt-label-header {
  position: sticky;
  top: 0;
  z-index: 12;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 0 12px 8px;
  font-weight: 600;
  font-size: 13px;
  color: var(--gantt-text-secondary);
  border-bottom: 1px solid var(--gantt-border);
  background: var(--gantt-bg-secondary);
}

.task-col-header {
  font-size: 0.7em;
  font-weight: 600;
  color: var(--gantt-text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.task-col-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gantt-labels-body {
  /* No overflow hidden - content flows naturally */
}

/* ===========================
   Chart Area (Right)
   =========================== */
.gantt-chart-area {
  position: relative;
}

.gantt-chart-header {
  position: sticky;
  top: 0;
  z-index: 8;
  background: var(--gantt-bg-secondary);
  border-bottom: 1px solid var(--gantt-border);
}

.gantt-chart-body {
  position: relative;
}

/* ===========================
   Month Header Row
   =========================== */
.gantt-month-header {
  display: flex;
  height: 24px;
  border-bottom: 1px solid var(--gantt-border);
}

.gantt-month-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--gantt-text-secondary);
  border-right: 1px solid var(--gantt-border);
  overflow: hidden;
  white-space: nowrap;
}

/* ===========================
   Day Header Row
   =========================== */
.gantt-header {
  display: flex;
  height: 32px;
}

.gantt-header-cell {
  width: var(--day-width, 40px);
  min-width: var(--day-width, 40px);
  text-align: center;
  font-size: 10px;
  line-height: 32px;
  border-right: 1px solid var(--gantt-grid-line);
  color: var(--gantt-text-secondary);
}

.gantt-header-cell.weekend {
  background: var(--gantt-bg-tertiary);
  opacity: 0.7;
}

/* ===========================
   Grid Lines
   =========================== */
.gantt-grid-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.gantt-grid-line {
  position: absolute;
  top: 0;
  bottom: 0;
  border-left: 1px solid var(--gantt-grid-line);
}

.gantt-grid-line.monday {
  border-left-color: var(--gantt-grid-monday);
}

.gantt-grid-line.weekend {
  background: var(--gantt-weekend-bg);
}

/* ===========================
   Phase Header
   =========================== */
.phase-header {
  font-weight: bold;
  padding: 8px 12px;
  background: var(--gantt-phase-bg);
  color: var(--gantt-phase-text);
  border-bottom: 1px solid var(--gantt-border);
  font-size: 0.9em;
  display: flex;
  align-items: center;
}

.phase-header-chart {
  /* Chart side phase header - just a colored band */
}

.phase-header .task-col-name {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===========================
   Task Rows
   =========================== */
.task-row {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--gantt-grid-line);
  position: relative;
}

.task-label-row {
  padding: 0 12px;
  gap: 8px;
  align-items: center;
}

.task-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.85em;
  flex: 1;
  min-width: 0;
  color: var(--gantt-text);
}

.task-pic {
  font-size: 0.75em;
  white-space: nowrap;
  flex-shrink: 0;
}

.task-date-cell {
  font-size: 0.72em;
  color: var(--gantt-text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
  padding: 2px 0;
  width: 88px;
  box-sizing: border-box;
}

.task-progress-cell {
  font-size: 0.72em;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
  padding: 2px 0;
  width: 56px;
  box-sizing: border-box;
}

.task-progress-cell.is-complete {
  color: var(--bar-progress-fill);
}

.task-progress-cell.is-progress {
  color: var(--bar-inprogress-fill);
}

.task-progress-cell.is-pending {
  color: var(--bar-notstarted-fill);
}

.task-progress-cell.is-delayed {
  color: var(--gantt-overdue);
}

.gantt-task-row {
  /* Chart-side task row needs relative positioning for bars */
  position: relative;
}

/* ===========================
   Bar Styles
   =========================== */
.bar-container {
  position: absolute;
  height: 20px;
  top: 8px;
  display: flex;
  align-items: center;
  cursor: pointer;
  overflow: visible;
}

.bar-planned {
  height: 100%;
  border: 2px dashed var(--bar-planned-border);
  border-radius: 4px;
  position: absolute;
  top: 0;
  z-index: 3;
  pointer-events: none;
}

.bar-actual {
  height: 100%;
  border-radius: 4px;
  position: absolute;
  display: flex;
  overflow: hidden;
  top: 0;
  z-index: 2;
}

.bar-progress {
  height: 100%;
  background: var(--bar-progress-fill);
  transition: width 0.3s ease;
}

.bar-remaining {
  height: 100%;
  background: var(--bar-progress-remaining);
}

.bar-overdue {
  border: 2px solid var(--gantt-overdue) !important;
  box-shadow: 0 0 6px var(--gantt-overdue);
  border-radius: 4px;
}

.bar-overdue .bar-planned {
  border-color: var(--gantt-overdue);
}

.bar-behind {
  border: 2px solid var(--bar-behind-fill) !important;
  box-shadow: 0 0 4px rgba(255, 193, 7, 0.4);
  border-radius: 4px;
}

.bar-behind .bar-planned {
  border-color: var(--bar-behind-fill);
}

.progress-text {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  font-weight: bold;
  color: var(--progress-text-color);
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  pointer-events: none;
  white-space: nowrap;
}

/* ===========================
   Milestone (diamond shape for point-in-time tasks)
   =========================== */
.bar-container.milestone-container {
  cursor: pointer;
}

.milestone {
  position: absolute;
  top: 50%;
  width: 13px;
  height: 13px;
  transform: translate(-50%, -50%) rotate(45deg);
  border: 2px solid var(--milestone-color);
  border-radius: 2px;
  box-sizing: border-box;
  pointer-events: none;
}

.milestone.is-planned {
  border-style: dashed;
  background: transparent;
}

.milestone.is-solid {
  background: var(--milestone-color);
}

.milestone.is-overdue {
  border-color: var(--gantt-overdue);
}

.milestone.is-overdue.is-solid {
  background: var(--gantt-overdue);
}

.tooltip-notes {
  color: var(--gantt-tooltip-text);
  opacity: 0.85;
}

/* ===========================
   Compact theme overrides
   =========================== */
[data-gantt-theme="compact"] .task-row {
  border-bottom: none;
}

[data-gantt-theme="compact"] .bar-container {
  top: 2px;
  height: 20px;
}

/* ===========================
   Classic theme overrides (spreadsheet-style shaded cells, no bars)
   =========================== */
[data-gantt-theme="classic"] .classic-cell {
  position: absolute;
  top: 0;
  height: 100%;
  z-index: 1;
}

/* Draw the vertical day grid above the shaded cells for a true grid look. */
[data-gantt-theme="classic"] .gantt-grid-lines {
  z-index: 2;
}

[data-gantt-theme="classic"] .task-row {
  border-bottom: 1px solid var(--gantt-border);
}

[data-gantt-theme="classic"] .phase-header {
  border-bottom: 1px solid var(--gantt-border);
}

/* ===========================
   Netflix theme overrides (dark, Netflix-red accents, bold display type)
   =========================== */
[data-gantt-theme="netflix"] .gantt-month-cell,
[data-gantt-theme="netflix"] .gantt-header-cell {
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

[data-gantt-theme="netflix"] .gantt-month-cell {
  font-weight: 700;
  color: var(--gantt-text);
}

[data-gantt-theme="netflix"] .gantt-header-cell {
  font-weight: 600;
}

[data-gantt-theme="netflix"] .phase-header {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 800;
  font-size: 0.95em;
}

[data-gantt-theme="netflix"] .task-label {
  font-weight: 500;
}

[data-gantt-theme="netflix"] .task-col-header {
  letter-spacing: 0.04em;
}

[data-gantt-theme="netflix"] .bar-container {
  border-radius: 2px;
}

/* ===========================
   Today Marker
   =========================== */
.today-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gantt-today);
  z-index: 4;
  pointer-events: none;
  opacity: 0.8;
}

.today-marker::before {
  content: 'Today';
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  font-weight: 600;
  background: var(--gantt-today);
  color: white;
  padding: 2px 6px;
  border-radius: 3px;
  white-space: nowrap;
}

/* ===========================
   Tooltip
   =========================== */
.tooltip {
  position: absolute;
  background: var(--gantt-tooltip-bg);
  color: var(--gantt-tooltip-text);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  box-shadow: var(--gantt-shadow);
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  max-width: 250px;
  white-space: pre-wrap;
  line-height: 1.4;
}

.tooltip.visible {
  opacity: 1;
}

.tooltip strong {
  font-weight: 700;
}

.tooltip em {
  font-style: italic;
}

/* ===========================
   Callout (Always-visible notes - floating above bar)
   =========================== */
.callout {
  position: absolute;
  background: var(--gantt-callout-bg);
  border: 1px solid var(--gantt-callout-border);
  color: var(--gantt-callout-text);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 10px;
  max-width: 250px;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  white-space: normal;
  z-index: 6;
  line-height: 1.4;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.callout::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px 5px 0;
  border-style: solid;
  border-color: var(--gantt-callout-border) transparent transparent;
}

.callout strong {
  font-weight: 700;
}

.callout em {
  font-style: italic;
}

/* ===========================
   Arrow / SVG Styles
   =========================== */
.arrow-svg {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 3;
  overflow: visible;
}

.dependency-arrow {
  fill: none;
  stroke: var(--gantt-arrow);
  stroke-width: 1.5;
}

/* ===========================
   Empty State
   =========================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  color: var(--gantt-text-secondary);
}

.empty-state-icon {
  font-size: 4em;
  margin-bottom: 16px;
}

.empty-state h2 {
  margin: 0 0 8px 0;
  color: var(--gantt-text);
  font-size: 1.5em;
}

.empty-state p {
  margin: 0 0 24px 0;
  font-size: 1.05em;
}

.empty-state-format {
  text-align: left;
  background: var(--gantt-bg-secondary);
  border: 1px solid var(--gantt-border);
  border-radius: 8px;
  padding: 20px 24px;
  max-width: 600px;
  width: 100%;
}

.empty-state-format h3 {
  margin: 0 0 8px 0;
  font-size: 0.95em;
  color: var(--gantt-text);
}

.empty-state-format code {
  display: block;
  background: var(--gantt-bg-tertiary);
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.8em;
  margin-bottom: 12px;
  overflow-x: auto;
  white-space: nowrap;
  color: var(--gantt-text);
}

.empty-state-format ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.empty-state-format li {
  padding: 4px 0;
  font-size: 0.85em;
  color: var(--gantt-text-secondary);
}

.empty-state-format li strong {
  color: var(--gantt-text);
}

/* ===========================
   Scrollbar Styling
   =========================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gantt-bg-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--gantt-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gantt-text-secondary);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--gantt-border) var(--gantt-bg-secondary);
}

/* ===========================
   Responsive Adjustments
   =========================== */
@media (max-width: 768px) {
  .toolbar {
    padding: 8px 12px;
  }

  .gantt-wrapper {
    grid-template-columns: 160px 1fr !important;
  }

  .task-label {
    min-width: 0;
  }

  .task-col-extra,
  .task-date-cell,
  .task-progress-cell {
    display: none;
  }

  .empty-state {
    padding: 40px 16px;
  }

  .empty-state-format {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .gantt-wrapper {
    grid-template-columns: 120px 1fr !important;
  }

  .task-label {
    min-width: 0;
    font-size: 0.75em;
  }

  .task-pic {
    display: none;
  }
}

/* ===========================
   Premium / Account
   =========================== */
.account-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.account-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px 4px 4px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--bg-secondary);
}

.account-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.account-name {
  font-size: 0.85em;
  font-weight: 600;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-logout {
  padding: 2px 8px;
  font-size: 0.8em;
}

.premium-badge {
  font-size: 0.95em;
  cursor: default;
}

.btn-premium {
  border-color: #f6c445;
  background: #fff7e0;
  color: #7a5b00;
  font-weight: 700;
}

[data-theme='dark'] .btn-premium {
  background: #3a2f00;
  color: #ffd666;
}

.btn-premium:hover {
  background: #ffedb8;
}

[data-theme='dark'] .btn-premium:hover {
  background: #4a3d00;
}

.toolbar-sep {
  width: 1px;
  height: 22px;
  background: var(--border-color);
  margin: 0 4px;
}

/* ===========================
   Source Bar
   =========================== */
.source-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 20px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.source-bar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.source-bar-icon {
  font-size: 1.2em;
}

.source-bar-title {
  font-size: 0.9em;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 40vw;
}

.source-bar-meta {
  font-size: 0.78em;
  color: var(--text-secondary);
}

.source-bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ===========================
   Modals
   =========================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 16px;
  overflow-y: auto;
}

.modal-overlay.visible {
  display: flex;
}

.modal-box {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 520px;
  margin-bottom: 40px;
}

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

.modal-header h3 {
  margin: 0;
  font-size: 1.1em;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.1em;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 6px;
}

.modal-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal-body {
  padding: 20px;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-lead {
  margin: 0 0 16px 0;
  color: var(--text-secondary);
  font-size: 0.9em;
  line-height: 1.5;
}

.modal-muted {
  font-size: 0.82em;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.modal-divider {
  text-align: center;
  font-size: 0.8em;
  color: var(--text-secondary);
  margin: 18px 0 12px 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Premium plans */
.plan-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.plan-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-secondary);
}

.plan-name {
  font-weight: 700;
  font-size: 0.95em;
}

.plan-price {
  font-size: 0.9em;
  color: var(--text-secondary);
  white-space: nowrap;
}

.paypal-container {
  margin-top: 4px;
}

.license-row {
  display: flex;
  gap: 8px;
}

.field-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9em;
}

.field-input:focus {
  outline: 2px solid var(--bar-actual);
  border-color: transparent;
}

.premium-active {
  font-weight: 700;
  color: #b8860b;
  margin-bottom: 6px;
}

[data-theme='dark'] .premium-active {
  color: #ffd666;
}

/* Sheets list rows */
.sheet-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 8px;
  background: var(--bg-secondary);
}

.sheet-row-main {
  min-width: 0;
  flex: 1;
}

.sheet-row-title {
  font-weight: 600;
  font-size: 0.9em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sheet-row-sub {
  font-size: 0.78em;
  color: var(--text-secondary);
  margin-top: 2px;
}

.sheet-row-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.sheet-row-actions .btn {
  padding: 4px 10px;
  font-size: 0.82em;
}

.btn-danger {
  border-color: var(--overdue-color);
  color: var(--overdue-color);
}

.btn-danger:hover {
  background: rgba(229, 57, 53, 0.1);
}

.btn-small {
  padding: 3px 8px;
  font-size: 0.78em;
}

.form-field {
  margin-bottom: 14px;
}

.form-field label {
  display: block;
  font-size: 0.85em;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9em;
}

.connection-list {
  margin: 12px 0;
}

.modal-hint {
  font-size: 0.8em;
  color: var(--text-secondary);
  margin: 4px 0 0 0;
}

.empty-small {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9em;
  padding: 16px 0;
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border-color);
  border-top-color: var(--bar-actual);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

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

.error-text {
  color: var(--overdue-color);
  font-size: 0.85em;
}

.btn-primary {
  background: var(--bar-actual);
  border-color: var(--bar-actual);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--bar-actual);
  opacity: 0.9;
}

.btn-mini {
  padding: 3px 8px;
  font-size: 0.8em;
}

.field-label {
  display: block;
  font-size: 0.85em;
  font-weight: 600;
  margin: 14px 0 6px 0;
  color: var(--text-primary);
}

.modal-note {
  font-size: 0.85em;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.modal-loading {
  padding: 20px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9em;
}

.sheet-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px 0;
}

.sheet-list .sheet-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.9em;
  margin-bottom: 8px;
  transition: background 0.2s;
}

.sheet-list .sheet-row:hover {
  background: var(--bg-tertiary);
}

.sheet-row-icon {
  font-size: 1.1em;
  flex-shrink: 0;
}

.sheet-row-name {
  font-weight: 600;
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sheet-row-meta {
  font-size: 0.78em;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.sheet-item {
  position: relative;
}

.sheet-item .sheet-load {
  padding-right: 96px;
}

.sheet-item-actions {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 4px;
}

/* ===========================
   Gantt Theme picker
   =========================== */
.theme-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.theme-card {
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  background: var(--bg-secondary);
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}

.theme-card:hover {
  border-color: var(--text-secondary);
}

.theme-card.selected {
  border-color: var(--bar-progress-fill);
  background: var(--bg-tertiary);
}

.theme-preview {
  border-radius: 6px;
  border: 1px solid rgba(128, 128, 128, 0.4);
  padding: 8px;
  height: 64px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: center;
  background: var(--gantt-bg);
}

.theme-preview-bar {
  height: 12px;
  border-radius: 3px;
}

.theme-preview-planned {
  background: var(--gantt-bg-secondary);
  border: 1px solid var(--gantt-border);
}

.theme-preview-fill {
  background: var(--bar-progress-fill);
  width: 62%;
}

.theme-card-name {
  margin-top: 8px;
  font-weight: 600;
  font-size: 0.92em;
}

.theme-card-state {
  margin-top: 2px;
  font-size: 0.78em;
  color: var(--text-secondary);
}

/* ===========================
   Landing Page (SEO / logged-out view)
   =========================== */
.landing {
  flex: 1;
  overflow-y: auto;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.landing-hero {
  background: linear-gradient(135deg, var(--bar-actual), #0d47a1);
  color: #ffffff;
  padding: 72px 20px 64px;
  text-align: center;
}

.landing-hero-inner {
  max-width: 900px;
  margin: 0 auto;
}

.landing-title {
  font-size: clamp(1.9em, 5vw, 3em);
  font-weight: 800;
  margin: 0 0 18px 0;
  line-height: 1.15;
  color: #ffffff;
}

.landing-subtitle {
  font-size: clamp(1.05em, 2.4vw, 1.3em);
  line-height: 1.6;
  margin: 0 auto 28px;
  max-width: 720px;
  color: rgba(255, 255, 255, 0.92);
}

.landing-subtitle strong {
  color: #ffffff;
}

.landing-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.landing-hero-actions .btn-primary {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--bar-actual);
}

.landing-hero-actions .btn-primary:hover {
  background: #e3f2fd;
}

.landing-hero-actions .btn {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.landing-hero-actions .btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

.btn-lg {
  padding: 12px 22px;
  font-size: 1em;
  border-radius: 8px;
}

.landing-hero-note {
  margin: 20px 0 0 0;
  font-size: 0.85em;
  color: rgba(255, 255, 255, 0.8);
}

.landing-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 20px;
}

.landing-section-alt {
  background: var(--bg-primary);
  max-width: none;
  padding: 56px 20px;
}

.landing-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.landing-h2 {
  font-size: clamp(1.4em, 3.4vw, 2em);
  font-weight: 800;
  text-align: center;
  margin: 0 0 12px 0;
  color: var(--text-primary);
}

.landing-lede {
  text-align: center;
  color: var(--text-secondary);
  margin: 0 0 32px 0;
  font-size: 1.05em;
}

.landing-video {
  max-width: 800px;
  margin: 24px auto 0;
}

.landing-video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.landing-video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.landing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.landing-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 20px;
  box-shadow: var(--shadow);
}

.landing-card-icon {
  font-size: 2.2em;
  margin-bottom: 10px;
}

.landing-card h3 {
  margin: 0 0 8px 0;
  font-size: 1.1em;
  color: var(--text-primary);
}

.landing-card p {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.55;
  color: var(--text-secondary);
}

.landing-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.landing-steps li {
  display: flex;
  gap: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 22px 20px;
  box-shadow: var(--shadow);
}

.landing-step-num {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bar-actual);
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
}

.landing-steps h3 {
  margin: 0 0 6px 0;
  font-size: 1.05em;
  color: var(--text-primary);
}

.landing-steps p {
  margin: 0;
  font-size: 0.92em;
  line-height: 1.5;
  color: var(--text-secondary);
}

.landing-steps code {
  background: var(--bg-tertiary);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--text-primary);
}

.landing-pricing {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  align-items: stretch;
}

.landing-price {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 20px;
  box-shadow: var(--shadow);
  position: relative;
}

.landing-price h3 {
  margin: 0 0 8px 0;
  font-size: 1.05em;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.landing-price-amount {
  font-size: 2.1em;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.landing-price-amount span {
  font-size: 0.45em;
  font-weight: 500;
  color: var(--text-secondary);
}

.landing-price ul {
  list-style: none;
  margin: 0 0 20px 0;
  padding: 0;
  flex: 1;
}

.landing-price li {
  padding: 5px 0;
  font-size: 0.9em;
  color: var(--text-secondary);
}

.landing-price li::before {
  content: '✓ ';
  color: var(--bar-progress-fill);
  font-weight: 700;
}

.landing-price-featured {
  border: 2px solid var(--bar-actual);
  transform: translateY(-6px);
}

@media (max-width: 760px) {
  .landing-price-featured {
    transform: none;
  }
}

.landing-price-tag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bar-actual);
  color: #ffffff;
  font-size: 0.75em;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.landing-faq {
  max-width: 760px;
  margin: 0 auto;
}

.landing-faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
}

.landing-faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1em;
  color: var(--text-primary);
  list-style: none;
  position: relative;
  padding-right: 44px;
}

.landing-faq-item summary::-webkit-details-marker {
  display: none;
}

.landing-faq-item summary::after {
  content: '+';
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4em;
  font-weight: 400;
  color: var(--text-secondary);
  transition: transform 0.2s;
}

.landing-faq-item[open] summary::after {
  content: '−';
}

.landing-faq-item[open] summary {
  border-bottom: 1px solid var(--border-color);
}

.landing-faq-item p {
  margin: 0;
  padding: 14px 20px;
  font-size: 0.95em;
  line-height: 1.6;
  color: var(--text-secondary);
}

.landing-faq-item code {
  background: var(--bg-tertiary);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--text-primary);
}

.landing-faq-item a {
  color: var(--bar-actual);
  text-decoration: underline;
  font-weight: 600;
}

.landing-faq-item a:hover {
  text-decoration: none;
}

.landing-cta {
  background: linear-gradient(135deg, var(--bar-actual), #0d47a1);
  color: #ffffff;
  text-align: center;
  padding: 64px 20px;
}

.landing-cta h2 {
  margin: 0 0 10px 0;
  font-size: clamp(1.4em, 3.4vw, 2em);
  color: #ffffff;
}

.landing-cta p {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 1.05em;
  color: rgba(255, 255, 255, 0.92);
}

.landing-cta .landing-hero-actions .btn-primary {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--bar-actual);
}

.landing-cta .landing-hero-actions .btn-primary:hover {
  background: #e3f2fd;
}

.landing-cta .landing-hero-actions .btn {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.landing-footer {
  text-align: center;
  padding: 22px 20px;
  color: var(--text-secondary);
  font-size: 0.85em;
  background: var(--bg-secondary);
}

.landing-footer a {
  color: var(--text-secondary);
}


