/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100dvh;
}

a {
  color: var(--foreground);
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

/* ===== App Shell — Three-pane grid ===== */
.app-shell {
  display: grid;
  grid-template-columns: var(--nav-width) 1fr;
  min-height: 100dvh;
}

/* ===== Nav Pane ===== */
.pane-nav {
  position: sticky;
  top: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: var(--surface-2);
  padding: var(--space-4);
  z-index: 10;
}

.nav-brand {
  margin-bottom: var(--space-8);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--foreground);
}

.brand-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--muted-foreground);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-item:hover {
  background: var(--muted);
  color: var(--foreground);
}

.nav-item--active {
  background: var(--muted);
  color: var(--foreground);
  font-weight: 600;
}

.nav-tree > summary {
  cursor: pointer;
  list-style: none;
}

.nav-tree > summary::-webkit-details-marker {
  display: none;
}

.nav-tree-chevron {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.nav-tree[open] .nav-tree-chevron {
  transform: rotate(90deg);
}

.nav-tree-children {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 2px 0 0 var(--space-5);
  padding-left: var(--space-2);
  border-left: 1px solid var(--border);
}

.nav-subitem {
  padding: var(--space-1) var(--space-3);
}

.nav-subitem span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-subitem--muted {
  font-weight: 400;
  opacity: 0.8;
}

.nav-footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  color: var(--muted-foreground);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--muted);
  color: var(--foreground);
}

/* Show/hide sun/moon based on theme */
[data-theme="light"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: block; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ===== Content Pane ===== */
.pane-content {
  overflow-y: auto;
  padding: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-primary:hover {
  background: var(--foreground);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--on-secondary);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--muted);
}

.btn-ghost {
  background: transparent;
  color: var(--muted-foreground);
}

.btn-ghost:hover {
  background: var(--muted);
  color: var(--foreground);
}

.btn-sm {
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted-foreground);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-icon:hover {
  background: var(--muted);
  color: var(--destructive);
}

.btn-icon:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* ===== Inputs ===== */
.input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  color: var(--card-foreground);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgba(217, 164, 64, 0.15);
}

.input-sm {
  padding: 5px 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.input-textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

.form-error {
  color: var(--destructive);
  font-size: var(--font-size-xs);
  display: none;
}

/* ===== Homepage ===== */
.home-page {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-8);
}

.home-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hero-kicker {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--foreground);
}

.hero-desc {
  font-size: var(--font-size-lg);
  color: var(--muted-foreground);
  max-width: 36ch;
  line-height: 1.7;
}

.hero-content .btn-primary {
  align-self: flex-start;
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}

.hero-cards {
  position: relative;
  width: 200px;
  height: 180px;
}

.hero-card {
  position: absolute;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--card-foreground);
  white-space: nowrap;
  /* Sticker-style: slight rotation + white border effect */
  border: 1.5px solid var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 3px var(--card);
}

.hero-card--1 {
  top: 0;
  left: 0;
  transform: rotate(-3deg);
  animation: hero-float 5s ease-in-out infinite;
}

.hero-card--2 {
  top: 55px;
  left: 30px;
  transform: rotate(2deg);
  animation: hero-float 5s ease-in-out 0.5s infinite;
}

.hero-card--3 {
  top: 110px;
  left: 10px;
  transform: rotate(-1.5deg);
  animation: hero-float 5s ease-in-out 1s infinite;
}

@keyframes hero-float {
  0%, 100% { transform: translateY(0) rotate(var(--r, 0deg)); }
  50% { transform: translateY(-6px) rotate(var(--r, 0deg)); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-card {
    animation: none;
  }
}

/* Stats */
.home-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-6) var(--space-4);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.stat-icon {
  color: var(--accent);
  margin-bottom: var(--space-1);
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--foreground);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
}

/* Features */
.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-8);
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

/* Signature: feature icons in left margin */
.feature-marker {
  flex-shrink: 0;
  margin-left: -36px;
  margin-top: 2px;
}

.feature-item strong {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 2px;
}

.feature-item p {
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* ===== Board Page ===== */
.board-page {
  padding: var(--space-6) var(--space-6);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.board-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.board-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.board-actions {
  display: flex;
  gap: var(--space-2);
}

.add-list-form {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.add-list-form .input {
  max-width: 260px;
}

/* Columns */
.board-columns {
  display: flex;
  gap: var(--space-4);
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: var(--space-2);
  align-items: flex-start;
}

.board-column {
  flex: 0 0 280px;
  width: 280px;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.column-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.column-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.column-count {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--muted-foreground);
  background: var(--muted);
  padding: 1px 7px;
  border-radius: 10px;
  min-width: 22px;
  text-align: center;
}

.column-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.column-header:hover .column-actions {
  opacity: 1;
}

.column-cards {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 60px;
  transition: background var(--transition-fast);
}

.column-cards.drag-over {
  background: rgba(217, 164, 64, 0.08);
  border-radius: var(--radius-md);
}

/* Card */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  cursor: grab;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  position: relative;
}

.card:hover {
  border-color: var(--ring);
  box-shadow: var(--shadow-sm);
}

.card:active {
  cursor: grabbing;
}

.card.dragging {
  opacity: 0.5;
  transform: rotate(2deg);
  box-shadow: var(--shadow-lg);
}

.card-link {
  display: block;
  text-decoration: none;
  color: var(--card-foreground);
  margin-bottom: var(--space-2);
}

.card-link:hover {
  color: var(--foreground);
}

.card-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.card-comments-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: var(--font-size-xs);
  color: var(--muted-foreground);
}

.card-meta .btn-icon {
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.card:hover .btn-icon {
  opacity: 1;
}

.column-footer {
  padding: var(--space-2);
  flex-shrink: 0;
}

.btn-add-card {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--muted-foreground);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-add-card:hover {
  background: var(--muted);
  border-color: var(--ring);
  color: var(--foreground);
}

.add-card-form {
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex-shrink: 0;
}

.add-card-actions {
  display: flex;
  gap: var(--space-1);
}

/* Drag placeholder */
.drag-placeholder {
  height: 4px;
  background: var(--ring);
  border-radius: 2px;
  margin: 2px 0;
}

/* ===== Card Detail Page ===== */
.card-detail-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-8);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--muted-foreground);
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--muted-foreground);
}

.breadcrumb-link:hover {
  color: var(--accent);
}

.breadcrumb-list {
  color: var(--muted-foreground);
}

.breadcrumb-current {
  color: var(--foreground);
  font-weight: 600;
}

.card-detail-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-8);
  align-items: start;
}

.card-detail-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.card-detail-header {
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.card-detail-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.card-detail-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.meta-pill {
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  background: var(--muted);
  color: var(--muted-foreground);
}

.meta-date {
  font-size: var(--font-size-xs);
  color: var(--muted-foreground);
}

.section-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.comment-count-badge {
  font-size: var(--font-size-xs);
  background: var(--muted);
  padding: 1px 7px;
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0;
}

.card-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--card-foreground);
  /* Descriptions are stored as plain text and rendered verbatim into one <p>,
     so without this every newline collapses and a multi-line description
     reads as one run-on paragraph. */
  white-space: pre-wrap;
}

.text-muted {
  color: var(--muted-foreground);
  font-style: italic;
  font-size: var(--font-size-sm);
}

/* Comments */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.comment {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.comment:hover {
  border-color: var(--ring);
}

.comment-body {
  flex: 1;
  min-width: 0;
}

.comment-text {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--card-foreground);
  word-break: break-word;
}

.comment-time {
  font-size: var(--font-size-xs);
  color: var(--muted-foreground);
  margin-top: var(--space-1);
  display: block;
}

.comment-actions {
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  flex-shrink: 0;
}

.comment:hover .comment-actions {
  opacity: 1;
}

/* Comment form */
.comment-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.comment-form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Sidebar */
.sidebar-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: sticky;
  top: var(--space-6);
}

.sidebar-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
  margin-bottom: var(--space-1);
}

/* ===== Error Pages ===== */
.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60dvh;
  text-align: center;
}

.error-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.5;
}

.error-msg {
  font-size: var(--font-size-lg);
  color: var(--muted-foreground);
}

/* ===== Utility animations ===== */
@media (prefers-reduced-motion: no-preference) {
  .card {
    animation: card-enter 300ms ease-in-out;
  }

  @keyframes card-enter {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .comment {
    animation: comment-enter 300ms ease-in-out;
  }

  @keyframes comment-enter {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
  }

  .board-column {
    animation: column-enter 400ms ease-in-out;
  }

  @keyframes column-enter {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* ===== Focus ring ===== */
:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* ===== Scrollbar styling ===== */
.column-cards::-webkit-scrollbar {
  width: 4px;
}

.column-cards::-webkit-scrollbar-track {
  background: transparent;
}

.column-cards::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.column-cards::-webkit-scrollbar-thumb:hover {
  background: var(--muted-foreground);
}

.card-detail-attachments .comment-form-actions {
  flex-wrap: wrap;
}

.card-detail-attachments .comment-text a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.login-form {
  width: min(320px, 100%);
  align-items: stretch;
  text-align: left;
}

.account-section {
  margin-top: var(--space-4);
}

.account-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.account-form .input {
  flex: 1 1 180px;
  width: auto;
}

.user-boards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  border: 0;
  padding: 0;
  margin: var(--space-2) 0 0;
}

.user-boards legend {
  width: 100%;
}

.user-board {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
}

.token-box {
  white-space: pre-wrap;
  word-break: break-all;
  padding: var(--space-3);
  background: var(--muted);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
}

.board-toolbar {
  flex-wrap: wrap;
  gap: var(--space-2);
}

.secret-panel {
  border-color: var(--accent);
}

.secret-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  user-select: all;
}

.assignee-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  border: 0;
  padding: 0;
  margin: 0;
}

.blocker-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.blocker-row a {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blocker-add select {
  width: 100%;
}

.card-blocked-badge {
  color: var(--destructive);
}

.card-meta {
  flex-wrap: wrap;
}

/* Classes like .sidebar-card set display, which would otherwise beat the hidden attribute. */
[hidden] {
  display: none !important;
}

.board-actions {
  align-items: center;
  flex-wrap: wrap;
}

.user-board {
  white-space: nowrap;
}

.board-actions .input {
  width: auto;
}

/* Viewers get the same pages with the editing controls taken out; the API refuses their writes anyway. */
.read-only .edit-only {
  display: none !important;
}

/* ===== Timeline ===== */
.timeline-page {
  --tl-label: 260px;
  padding: var(--space-6);
  min-width: 0;
}

@media (max-width: 768px) {
  .timeline-page {
    --tl-label: 120px;
    padding: var(--space-4);
  }
}

.timeline-summary {
  margin-bottom: var(--space-4);
}

.timeline-late-text,
.card-overdue-badge {
  color: var(--destructive);
}

.timeline-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--card);
}

.timeline-chart {
  position: relative;
  font-size: var(--font-size-xs);
}

.timeline-header,
.timeline-row {
  display: flex;
}

.timeline-header {
  position: sticky;
  top: 0;
  height: 44px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  z-index: 2;
}

.timeline-label-col {
  position: sticky;
  left: 0;
  flex: 0 0 var(--tl-label);
  width: var(--tl-label);
  padding: 0 var(--space-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: var(--card);
  z-index: 1;
  line-height: 28px;
}

.timeline-track {
  position: relative;
  flex: 0 0 auto;
  height: 28px;
}

.timeline-header .timeline-track {
  height: 44px;
}

.timeline-week {
  position: absolute;
  bottom: 4px;
  color: var(--muted-foreground);
  transform: translateX(2px);
  white-space: nowrap;
}

.timeline-milestone-flag {
  position: absolute;
  top: 3px;
  max-width: 160px;
  padding: 0 var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-radius: var(--radius-sm, 4px);
  background: var(--accent);
  color: var(--accent-foreground, #fff);
  font-weight: 600;
}

.timeline-body {
  position: relative;
  padding-bottom: var(--space-2);
}

.timeline-lines {
  position: absolute;
  left: var(--tl-label);
  top: 0;
  bottom: 0;
  pointer-events: none;
}

.timeline-gridline,
.timeline-milestone-line,
.timeline-today {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0;
}

.timeline-gridline {
  border-left: 1px solid var(--border);
}

.timeline-milestone-line {
  border-left: 2px dashed var(--accent);
}

.timeline-today {
  border-left: 2px solid var(--destructive);
}

.timeline-group {
  position: sticky;
  left: 0;
  width: var(--tl-label);
  padding: var(--space-2) var(--space-3) var(--space-1);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
  font-size: var(--font-size-xs);
}

.timeline-row:hover {
  background: var(--muted);
}

.timeline-row:hover .timeline-label-col {
  background: var(--muted);
}

.timeline-bar,
.timeline-key {
  position: absolute;
  top: 6px;
  height: 16px;
  min-width: 6px;
  border-radius: 4px;
  background: var(--accent);
  overflow: hidden;
}

.timeline-bar span {
  display: block;
  padding: 0 4px;
  line-height: 16px;
  white-space: nowrap;
  color: var(--accent-foreground, #fff);
}

.timeline-bar.is-finished,
.timeline-key.is-finished {
  background: var(--muted-foreground);
  opacity: 0.5;
}

.timeline-bar.is-overdue,
.timeline-key.is-overdue {
  background: var(--destructive);
}

.timeline-bar.is-blocked,
.timeline-key.is-blocked {
  box-shadow: inset 0 0 0 2px var(--destructive);
  background-image: repeating-linear-gradient(45deg, transparent 0 4px, rgba(255, 255, 255, 0.35) 4px 8px);
}

.timeline-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  margin-top: var(--space-2);
}

.timeline-key {
  position: static;
  display: inline-block;
  width: 22px;
  height: 10px;
}

.timeline-key-line {
  display: inline-block;
  width: 0;
  height: 12px;
  border-left: 2px solid var(--destructive);
}

.timeline-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  max-width: 1000px;
}

.schedule-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.schedule-field .input {
  width: auto;
}

.milestone-title {
  flex: 1;
  min-width: 0;
}