:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --warning: #ca8a04;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.app { max-width: 1200px; margin: 0 auto; padding: 20px; }

.header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.header h1 { font-size: 22px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.current-month {
  font-size: 14px; color: var(--text-secondary);
  background: var(--card); padding: 4px 10px; border-radius: 6px;
  border: 1px solid var(--border);
}

.tab-bar {
  display: flex; gap: 4px; margin-bottom: 12px;
  border-bottom: 2px solid var(--border); padding-bottom: 2px; flex-wrap: wrap;
}
.tab {
  padding: 8px 16px; border: none; background: transparent;
  cursor: pointer; font-size: 14px; color: var(--text-secondary);
  border-radius: 6px 6px 0 0; position: relative; transition: background .15s, color .15s;
}
.tab:hover { background: #e5e7eb; color: var(--text); }
.tab.active { color: var(--primary); font-weight: 600; }
.tab.active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--primary);
}
.tab-add { font-weight: 700; color: var(--primary); }

.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.filter-info { font-size: 13px; color: var(--text-secondary); }

.task-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
}

.task-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px; cursor: pointer;
  box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s, border-color .15s, opacity .15s;
  position: relative;
}
.task-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.task-card.completed { opacity: .7; }
.task-card.completed .task-title { text-decoration: line-through; color: var(--text-secondary); }
.task-card.completed:hover { border-color: var(--success); }

/* Drag & drop */
.task-card.dragging { opacity: 0.4; transform: scale(0.95); }
.task-card.drag-over { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,0.3); }
.task-card.drag-over::after {
  content: ''; position: absolute; inset: 0; background: rgba(37,99,235,0.06);
  border-radius: 10px; pointer-events: none;
}

.task-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.task-title { font-size: 15px; font-weight: 600; word-break: break-word; flex: 1; margin-right: 8px; }
.task-status {
  font-size: 11px; padding: 2px 8px; border-radius: 12px; white-space: nowrap;
  font-weight: 500;
}
.status-created { background: #dbeafe; color: #1e40af; }
.status-in_progress { background: #fef3c7; color: #92400e; }
.status-completed { background: #d1fae5; color: #065f46; }
.status-routine { background: #e0e7ff; color: #3730a3; }

.task-meta { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.task-latest-note {
  font-size: 12px; color: var(--primary); margin-top: 4px;
  background: #eef2ff; padding: 3px 8px; border-radius: 4px;
  word-break: break-word; line-height: 1.4; white-space: pre-wrap;
}
.task-progress { display: flex; align-items: center; gap: 8px; font-size: 12px; margin-top: 4px; }
.progress-bar {
  flex: 1; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden;
}
.progress-fill { height: 100%; background: var(--primary); border-radius: 3px; transition: width .3s ease; }
.progress-fill.completed { background: var(--success); }

.routine-badge {
  display: inline-block; font-size: 12px; margin-top: 6px;
  padding: 2px 8px; background: #eef2ff; color: #4338ca; border-radius: 4px;
}

/* Modal */
.modal-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4);
  z-index: 100; align-items: center; justify-content: center;
  backdrop-filter: blur(2px);
}
.modal-overlay.show { display: flex; animation: fadeIn .2s ease; }
.modal {
  background: var(--card); border-radius: 12px; width: 700px; max-width: 92vw;
  max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; animation: slideUp .25s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.modal-sm { width: 420px; }
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; border-bottom: 1px solid var(--border); position: sticky; top: 0;
  background: var(--card); z-index: 2; border-radius: 12px 12px 0 0;
}
.modal-header h2 { font-size: 18px; }
.btn-close {
  background: none; border: none; font-size: 24px; cursor: pointer;
  color: var(--text-secondary); width: 32px; height: 32px; display: flex;
  align-items: center; justify-content: center; border-radius: 6px; transition: background .15s;
}
.btn-close:hover { background: var(--bg); color: var(--text); }
.modal-body { padding: 16px 20px; flex: 1; overflow-y: auto; }
.modal-footer {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px; border-top: 1px solid var(--border); gap: 8px;
  position: sticky; bottom: 0; background: var(--card); border-radius: 0 0 12px 12px;
}

.form-row { margin-bottom: 14px; }
.form-row label {
  display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: #374151;
}
.input, .textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border);
  border-radius: 6px; font-size: 14px; font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.input-short { width: 140px; display: inline-block; }

.btn {
  padding: 8px 14px; border: none; border-radius: 6px; cursor: pointer; font-size: 13px;
  background: var(--bg); color: var(--text); transition: background .15s, transform .1s, box-shadow .15s;
}
.btn:hover { background: #e5e7eb; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 2px 8px rgba(37,99,235,0.3); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-export { background: #0f766e; color: #fff; }
.btn-export:hover { background: #115e59; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-sm:disabled {
  opacity: .5; cursor: not-allowed; transform: none;
}

.active-btn { background: var(--primary-hover); color: #fff; font-weight: 600; }
.btn-complete-active { background: var(--success); color: #fff; font-weight: 600; }

.status-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.status-badge {
  padding: 4px 12px; border-radius: 12px; font-size: 12px; font-weight: 600;
}
.status-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.stage-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.stage-item {
  background: #f9fafb; border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; display: flex; justify-content: space-between; align-items: center;
  transition: border-color .15s;
}
.stage-item:hover { border-color: var(--primary); }
.stage-item-main { flex: 1; min-width: 0; }
.stage-index {
  font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 4px;
}
.stage-note { font-size: 14px; word-break: break-word; white-space: pre-wrap; line-height: 1.5; }
.stage-time { font-size: 11px; color: var(--text-secondary); margin-top: 4px; }
.stage-check {
  cursor: pointer; min-width: 36px; height: 36px; display: flex;
  align-items: center; justify-content: center; border-radius: 50%;
  border: 2px solid var(--border); transition: border-color .2s, background .2s;
  position: relative; flex-shrink: 0; margin: 0 4px;
}
.stage-check:hover { border-color: var(--primary); }
.stage-check.checked { background: var(--success); border-color: var(--success); }
.stage-check-input { display: none; }
.stage-check-mark {
  font-weight: 700; font-size: 15px; color: var(--text-secondary);
}
.stage-check.checked .stage-check-mark { color: #fff; }
.btn-stage-delete {
  width: 20px; height: 20px; align-items: center; justify-content: center;
  background: var(--danger); color: #fff; border: none; border-radius: 50%;
  font-size: 11px; cursor: pointer; margin-left: 8px; flex-shrink: 0; display: flex;
  opacity: 0; transition: opacity .15s; line-height: 1;
}
.stage-item:hover .btn-stage-delete { opacity: 1; }

.stage-add { display: flex; gap: 8px; }
.stage-add .input { flex: 1; }

.empty-stages {
  color: var(--text-secondary); font-size: 13px; text-align: center;
  padding: 20px; background: #f9fafb; border-radius: 8px; border: 1px dashed var(--border);
}

.times { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.time-item { font-size: 12px; color: var(--text-secondary); background: #f9fafb; padding: 6px 10px; border-radius: 6px; }

.routine-inputs { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.routine-info { font-size: 12px; color: var(--text-secondary); }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a8a8a8; }

.empty-state {
  text-align: center; padding: 60px 20px; color: var(--text-secondary);
}
.empty-state h3 { margin-bottom: 8px; color: var(--text); }

/* Reminder modal */
#remindList { padding-left: 20px; line-height: 1.8; }
#remindList li { font-size: 14px; }

/* Month select */
.month-select {
  font-size: 14px; color: var(--text);
  background: var(--card); padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border); cursor: pointer;
}
.month-select:focus { outline: none; border-color: var(--primary); }
#yearSelect { width: 90px; }
#monthSelect { width: 75px; }

/* Bulk bar */
.bulk-bar {
  display: flex; align-items: center; gap: 8px;
  background: var(--card); padding: 6px 12px; border-radius: 6px;
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.bulk-bar span { font-size: 13px; color: var(--text-secondary); }

/* Path input */
.path-input { display: flex; gap: 8px; align-items: center; }
.path-input .input { flex: 1; }

/* Task card actions */
.card-actions {
  display: flex; gap: 6px; margin-top: 10px; padding-top: 10px;
  border-top: 1px dashed var(--border); align-items: center;
}
.card-actions .checkbox-wrap {
  display: flex; align-items: center; gap: 4px; margin-right: 4px;
}
.card-actions .checkbox-wrap input { cursor: pointer; }
.card-actions .checkbox-wrap label {
  font-size: 11px; color: var(--text-secondary); cursor: pointer;
}
.card-actions .btn-action {
  padding: 3px 8px; font-size: 11px; border-radius: 4px;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text); cursor: pointer; transition: background .15s;
}
.card-actions .btn-action:hover { background: #e5e7eb; }
.card-actions .btn-action.complete { background: #d1fae5; color: #065f46; border-color: #a7f3d0; }
.card-actions .btn-action.complete:hover { background: #a7f3d0; }
.card-actions .btn-action.next { background: #dbeafe; color: #1e40af; border-color: #bfdbfe; }
.card-actions .btn-action.next:hover { background: #bfdbfe; }
.card-actions .btn-action.delete { background: #fee2e2; color: #991b1b; border-color: #fecaca; }
.card-actions .btn-action.delete:hover { background: #fecaca; }

/* Tab delete */
.tab-wrap { display: flex; align-items: center; position: relative; }
.tab-arrow {
  display: none; position: absolute; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; align-items: center; justify-content: center;
  background: var(--bg); color: var(--text-secondary); border: 1px solid var(--border);
  border-radius: 4px; font-size: 9px; cursor: pointer; z-index: 1; padding: 0;
  transition: background .15s, color .15s;
}
.tab-arrow:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.tab-arrow-left { left: 2px; }
.tab-arrow-right { right: 18px; }
.tab-wrap:hover .tab-arrow { display: flex; }
.tab-delete {
  display: none; position: absolute; right: 2px; top: 2px;
  width: 16px; height: 16px; align-items: center; justify-content: center;
  background: var(--danger); color: #fff; border: none; border-radius: 50%;
  font-size: 10px; cursor: pointer; z-index: 2;
}
.tab-wrap:hover .tab-delete { display: flex; }
.tab-wrap .tab { padding-left: 24px; padding-right: 40px; }

/* Revert button */
.btn-revert { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.btn-revert:hover { background: #fde68a; }

/* Overview modal */
.modal-wide { width: 90vw; max-width: 90vw; max-height: 90vh; }
.modal-wide .modal-body { display: flex; flex-direction: column; overflow: hidden; }
.overview-year-row {
  display: flex; align-items: center; gap: 10px; margin-bottom: 16px;
}
.overview-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
  flex: 1; min-height: 0; overflow-y: auto; align-content: start;
}
.overview-month-card {
  background: #f9fafb; border: 1px solid var(--border); border-radius: 8px;
  padding: 10px;
}
.overview-month-card h3 {
  font-size: 13px; margin-bottom: 8px; color: var(--primary);
  text-align: center; padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.overview-month-card .overview-task-list {
  max-height: 180px; overflow-y: auto;
}
.overview-task-item {
  font-size: 11px; padding: 4px 6px; margin-bottom: 3px;
  border-radius: 4px; background: var(--card); border: 1px solid var(--border);
  cursor: pointer; display: flex; align-items: center; gap: 4px;
  transition: border-color .15s;
}
.overview-task-item:hover { border-color: var(--primary); }
.overview-task-dot {
  width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
}
.overview-task-dot.created { background: var(--text-secondary); }
.overview-task-dot.in_progress { background: var(--warning); }
.overview-task-dot.completed { background: var(--success); }
.overview-task-dot.routine { background: #6366f1; }
.overview-task-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overview-month-empty {
  font-size: 11px; color: var(--text-secondary); text-align: center;
  padding: 8px 0;
}
@media (max-width: 800px) {
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Settings button */
.btn-settings {
  width: 36px; height: 36px; padding: 0; display: flex;
  align-items: center; justify-content: center; background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; cursor: pointer;
  font-size: 16px; transition: background .15s, border-color .15s;
}
.btn-settings:hover { background: #e5e7eb; border-color: var(--primary); }

/* Settings modal */
.settings-section {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.settings-section:last-child { border-bottom: none; margin-bottom: 0; }
.settings-section h3 {
  font-size: 14px; margin-bottom: 10px; color: var(--text);
}
.settings-actions {
  display: flex; flex-direction: column; gap: 8px;
}
.btn-settings-action {
  width: 100%; text-align: left; padding: 10px 14px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; font-size: 13px; transition: background .15s, border-color .15s;
}
.btn-settings-action:hover { background: #e5e7eb; border-color: var(--primary); }
.about-info { font-size: 13px; color: var(--text-secondary); line-height: 1.8; }
.about-info p { margin-bottom: 2px; }