/* === Theme Variables === */
:root {
  --color-bg: #0d1117;
  --color-surface: #161b22;
  --color-surface-hover: #1c2333;
  --color-border: #30363d;
  --color-text: #c9d1d9;
  --color-text-secondary: #8b949e;
  --color-blue: #58a6ff;
  --color-green: #3fb950;
  --color-red: #f85149;
  --color-yellow: #d2991d;
  --color-orange: #f0883e;
  --color-purple: #a371f7;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 2px 8px rgba(0,0,0,0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--color-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Header === */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-left h1 { font-size: 1.15rem; white-space: nowrap; }

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.back-link {
  color: var(--color-text-secondary);
  font-size: 1rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--color-text); text-decoration: none; }

.user-status { font-size: 0.85rem; color: var(--color-text-secondary); }
.user-status.logged-in { color: var(--color-green); }
.user-email { font-size: 0.82rem; color: var(--color-text-secondary); margin-right: 0.5rem; }

/* === Container === */
.container { max-width: 1100px; margin: 2rem auto; padding: 0 1.5rem; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  background: var(--color-surface);
  color: var(--color-text);
  white-space: nowrap;
}
.btn:hover { background: var(--color-surface-hover); }
.btn-primary { background: var(--color-blue); border-color: var(--color-blue); color: #fff; }
.btn-primary:hover { background: #4a94e8; }
.btn-outline { background: transparent; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* === Search === */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.section-header h2 { font-size: 1.1rem; }

.search-input {
  padding: 0.4rem 0.75rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  width: 220px;
  outline: none;
  transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--color-blue); }
.search-input::placeholder { color: var(--color-text-secondary); }

/* === Board Cards === */
.board-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, transform 0.15s;
}
.board-card:hover {
  border-color: var(--color-blue);
  text-decoration: none;
  transform: translateX(2px);
}

.board-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.35rem;
}
.board-card-top h3 { font-size: 1.05rem; }

.board-pct {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-green);
  white-space: nowrap;
}

.board-desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.board-card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.5rem;
}

.board-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}

.stat-pending { color: var(--color-text-secondary); }
.stat-doing { color: var(--color-blue); }
.stat-done { color: var(--color-green); }
.stat-blocked { color: var(--color-yellow); }
.stat-failed { color: var(--color-red); }

.board-meta { font-size: 0.78rem; color: var(--color-text-secondary); }

.board-card-wrapper { position: relative; margin-bottom: 0.75rem; }
.board-card-wrapper .board-card { margin-bottom: 0; }

.btn-copy-share {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.board-card-wrapper:hover .btn-copy-share { opacity: 1; }
.btn-copy-share:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* === Progress Bar === */
.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-green), #2ea043);
  border-radius: 3px;
  transition: width 0.6s ease;
}

.progress-section { margin-bottom: 1.5rem; }

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.board-agents-header { font-size: 0.8rem; }

/* === Badge === */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 500;
}
.badge-active { background: rgba(88,166,255,0.15); color: var(--color-blue); }
.badge-done { background: rgba(63,185,80,0.15); color: var(--color-green); }

/* === Kanban Columns === */
.kanban-columns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  align-items: start;
}

.column {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  min-height: 200px;
}

.column h3 {
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}
.count { color: var(--color-text-secondary); font-weight: normal; }

/* === Task Cards === */
.task-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.7rem;
  margin-bottom: 0.5rem;
  font-size: 0.83rem;
  transition: transform 0.1s;
}
.task-card:hover { transform: translateY(-1px); }

.card-pending { border-left: 3px solid var(--color-text-secondary); }
.card-doing { border-left: 3px solid var(--color-blue); }
.card-done { border-left: 3px solid var(--color-green); opacity: 0.75; }
.card-failed { border-left: 3px solid var(--color-red); }
.card-blocked { border-left: 3px solid var(--color-yellow); opacity: 0.75; }

.task-title { font-weight: 500; margin-bottom: 0.25rem; }
.task-agent { font-size: 0.75rem; color: var(--color-text-secondary); }
.task-error { font-size: 0.75rem; color: var(--color-red); margin-top: 0.2rem; }
.task-result { font-size: 0.75rem; color: var(--color-green); margin-top: 0.2rem; }

.btn-retry {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  background: var(--color-blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}
.btn-retry:hover { background: #4a94e8; }

.empty-col {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  text-align: center;
  padding: 1rem 0;
}

/* === Dependency Badges === */
.task-deps {
  display: flex;
  gap: 0.35rem;
  margin-top: 0.3rem;
  flex-wrap: wrap;
}

.dep-badge {
  display: inline-block;
  padding: 0.1rem 0.45rem;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 500;
  white-space: nowrap;
}

.dep-waiting {
  background: rgba(210,153,29,0.15);
  color: var(--color-yellow);
}

.dep-blocking {
  background: rgba(160,113,247,0.15);
  color: var(--color-purple);
}

/* === View Toggle === */
.view-toggle {
  padding: 0.35rem 0.75rem;
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.15s;
}
.view-toggle.active {
  background: var(--color-blue);
  border-color: var(--color-blue);
  color: #fff;
}
.view-toggle:hover:not(.active) { color: var(--color-text); border-color: var(--color-text-secondary); }

/* === Dependency Tree === */
.dependency-tree {
  font-family: 'SF Mono', 'Consolas', 'Menlo', monospace;
  font-size: 0.88rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  min-height: 300px;
}

.tree-node {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid rgba(48,54,61,0.5);
  transition: background 0.1s;
}
.tree-node:hover { background: rgba(88,166,255,0.04); }

.tree-status-text { color: var(--color-text-secondary); font-size: 0.78rem; margin-left: 0.25rem; }
.tree-agent { color: var(--color-text-secondary); font-size: 0.78rem; }
.tree-error { color: var(--color-red); font-size: 0.78rem; margin-left: 1.8rem; }
.tree-result { color: var(--color-green); font-size: 0.78rem; margin-left: 1.8rem; }

/* === Empty State === */
.empty-state {
  color: var(--color-text-secondary);
  text-align: center;
  padding: 3rem 1rem;
}
.empty-title { font-size: 1.1rem; margin-bottom: 0.5rem; }
.empty-desc { font-size: 0.9rem; }

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.15s ease;
}

.modal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 420px;
  max-width: 90vw;
  box-shadow: var(--shadow);
}

.modal-card h3 { font-size: 1.05rem; margin-bottom: 1rem; }

.modal-card label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
  margin-top: 0.75rem;
}

.modal-card input,
.modal-card textarea {
  width: 100%;
  padding: 0.5rem;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  font-family: inherit;
}
.modal-card input:focus,
.modal-card textarea:focus { border-color: var(--color-blue); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.form-error {
  color: var(--color-red);
  font-size: 0.82rem;
  margin-top: 0.5rem;
  padding: 0.4rem 0.5rem;
  background: rgba(248,81,73,0.1);
  border-radius: var(--radius-sm);
}

/* === Login Page === */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 380px;
  max-width: 90vw;
  box-shadow: var(--shadow);
}

.login-card h1 { font-size: 1.15rem; text-align: center; margin-bottom: 0.5rem; }
.login-desc { font-size: 0.88rem; color: var(--color-text-secondary); text-align: center; margin-bottom: 1.5rem; }

.login-card label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
}

.login-card input {
  width: 100%;
  padding: 0.6rem;
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  margin-bottom: 0.75rem;
}
.login-card input:focus { border-color: var(--color-blue); }

.login-card button {
  width: 100%;
  padding: 0.6rem;
  background: var(--color-blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s;
}
.login-card button:hover { background: #4a94e8; }

.login-hint {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: 1rem;
}

/* === Animations === */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }

/* === Responsive === */
@media (max-width: 900px) {
  .kanban-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
  .header { padding: 0.75rem 1rem; }
  .header-left h1 { font-size: 1rem; }
}

@media (max-width: 600px) {
  .kanban-columns { grid-template-columns: 1fr; }
  .container { padding: 0 0.75rem; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .search-input { width: 100%; }
  .board-card-top { flex-direction: column; gap: 0.25rem; }
  .header { flex-wrap: wrap; gap: 0.5rem; }
  .header-left { flex-wrap: wrap; }
  .modal-card { width: 95vw; padding: 1rem; }
}