/* ── 프로덕션급 디자인 시스템 ── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

:root {
  --bg: #f8f9fb;
  --card: #ffffff;
  --primary: #0b6bcb;
  --primary-hover: #095196;
  --danger: #c62828;
  --success: #2e7d32;
  --warning: #ed6c02;
  --text-primary: #1a1a1a;
  --text-secondary: #5c5c5c;
  --text-tertiary: #8c8c8c;
  --separator: #e8e8e8;
  --fill: #f0f0f0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

html,
body {
  min-height: 100%;
  overflow-x: hidden;
  background: var(--bg);
  font-family: "Pretendard Variable", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.5;
  max-width: 1120px;
  margin: 0 auto;
  position: relative;
  letter-spacing: -0.01em;
}

/* ── 헤더 ── */
.header {
  padding: 16px 20px 0;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--separator);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 14px;
  gap: 12px;
}

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

.theme-toggle {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--separator);
  background: var(--card);
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.theme-toggle:hover {
  background: var(--fill);
  color: var(--text-primary);
}
.theme-toggle:active {
  opacity: 0.9;
}

.header-date {
  font-size: 12px;
  color: var(--text-tertiary);
  font-weight: 400;
  margin-bottom: 2px;
}

.header-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.add-fab {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: white;
  border: none;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 300;
  transition: background var(--transition), opacity var(--transition);
}
.add-fab:hover {
  background: var(--primary-hover);
}
.add-fab:active {
  opacity: 0.9;
}

/* ── 탭 ── */
.tab-group {
  display: flex;
  gap: 0;
  margin-bottom: 0;
  border-bottom: 1px solid var(--separator);
}

.tab {
  flex: 1;
  padding: 12px 8px;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.tab:hover {
  color: var(--text-primary);
}
.tab.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--primary);
  background: transparent;
  box-shadow: none;
}

/* ── 할일 목록 ── */
.todo-list {
  padding: 20px 20px 100px;
  min-height: 200px;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-tertiary);
  font-size: 14px;
}
.empty-state p:first-child {
  font-size: 32px;
  margin-bottom: 8px;
  opacity: 0.8;
}

/* ── 할일 카드 ── */
.todo-card {
  background: var(--card);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 8px;
  border: 1px solid var(--separator);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.todo-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.todo-card.priority-high::before {
  background: var(--danger);
}
.todo-card.priority-medium::before {
  background: var(--warning);
}
.todo-card.priority-low::before {
  background: var(--success);
}

.todo-card:hover {
  border-color: var(--fill);
  box-shadow: var(--shadow);
}
.todo-card:active {
  opacity: 0.98;
}

.todo-body {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.todo-done-toggle {
  width: 24px;
  height: 24px;
  min-width: 24px;
  min-height: 24px;
  border-radius: 50%;
  border: 2px solid var(--separator);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 2px;
  padding: 0;
  transition: border-color 0.15s, background 0.15s;
  position: relative;
}
.todo-done-toggle:hover {
  border-color: var(--text-tertiary);
}
.todo-done-toggle.checked {
  background: var(--success);
  border-color: var(--success);
}
.todo-done-toggle.checked::after {
  content: "✓";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
  font-weight: 700;
  pointer-events: none;
}

.todo-body-inner {
  flex: 1;
  min-width: 0;
  cursor: pointer;
  padding-left: 4px;
}

/* 카드 클릭 시 펼쳐지는 상세(메모 등) */
.todo-detail {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--separator);
  font-size: 12px;
  color: var(--text-secondary);
}
.todo-detail.hidden {
  display: none !important;
}
.todo-detail-row {
  margin-bottom: 4px;
}
.todo-detail-label {
  font-weight: 600;
  color: var(--text-primary);
  margin-right: 6px;
}
.todo-detail-list {
  margin: 4px 0 0 14px;
  padding-left: 0;
  list-style: disc;
}
.todo-detail-list li {
  margin-bottom: 2px;
}

.todo-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.02em;
}
.todo-title.done {
  text-decoration: line-through;
  color: var(--text-tertiary);
  font-weight: 500;
}

.todo-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--fill);
  color: var(--text-secondary);
}
.badge.업무 {
  background: #e3f2fd;
  color: #1565c0;
}
.badge.건강 {
  background: #e8f5e9;
  color: #2e7d32;
}
.badge.학습 {
  background: #fff3e0;
  color: #e65100;
}
.badge.생활 {
  background: #fce4ec;
  color: #c2185b;
}

.todo-date {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* 메모 내용 카드에 표시 */
.todo-memo-preview {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 8px 0 0;
  border-top: 1px solid var(--separator);
}

.todo-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.todo-actions button {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: background var(--transition), color var(--transition);
}
.todo-actions button:hover {
  background: var(--fill);
  color: var(--text-primary);
}
.todo-actions button:active {
  background: var(--separator);
}

/* ── 전체 일정 ── */
.schedule-section {
  margin: 24px 20px 80px;
  padding: 0;
  border-radius: var(--radius-lg);
  width: calc(100% - 40px);
  max-width: calc(1120px - 40px);
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--separator);
  box-shadow: var(--shadow);
  position: relative;
}

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

.schedule-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.schedule-title::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--primary);
  flex-shrink: 0;
}

.month-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--fill);
  padding: 4px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--separator);
}
.month-nav button {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--card);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.month-nav button:hover {
  background: var(--primary);
  color: white;
}
.month-nav button:active {
  opacity: 0.9;
}
#current-month-label {
  font-size: 13px;
  font-weight: 600;
  min-width: 72px;
  text-align: center;
  color: var(--text-primary);
}

/* ── 간트 차트 영역 (글래스 + 그리드) ── */
.schedule-chart {
  width: 100%;
  overflow: visible;
  padding: 16px 20px 20px;
  position: relative;
}

.gantt-wrap {
  width: 100%;
  min-width: 0;
  background: var(--bg);
  border-radius: var(--radius-md);
  padding: 12px 0;
  border: 1px solid var(--separator);
}

.gantt-header-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--separator);
  padding-bottom: 10px;
  margin-bottom: 10px;
  min-width: 0;
}

.gantt-label-header {
  width: 100px;
  min-width: 100px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-right: 14px;
  flex-shrink: 0;
}

.gantt-days-row {
  flex: 1;
  display: flex;
  min-width: 0;
}

.gantt-day-label {
  flex: 1;
  min-width: 0;
  text-align: center;
  padding: 6px 2px;
  border-radius: 8px;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.gantt-day-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  line-height: 1.2;
}
.gantt-day-wd {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-tertiary);
}
.gantt-day-label.gantt-day-today .gantt-day-num {
  color: var(--primary);
}
.gantt-day-label.gantt-day-today .gantt-day-wd {
  color: var(--primary);
}
.gantt-day-label.gantt-day-today {
  background: rgba(11, 107, 203, 0.08);
  border: 1px solid rgba(11, 107, 203, 0.2);
}
.gantt-day-label.gantt-day-sun .gantt-day-num { color: var(--danger); }
.gantt-day-label.gantt-day-sun .gantt-day-wd { color: var(--danger); }
.gantt-day-label.gantt-day-sat .gantt-day-num { color: var(--text-secondary); }
.gantt-day-label.gantt-day-sat .gantt-day-wd { color: var(--text-tertiary); }

.gantt-day-clickable {
  cursor: pointer;
}
.gantt-day-clickable:hover {
  background: var(--fill) !important;
}

.gantt-cell-clickable {
  cursor: pointer;
}
.gantt-cell-clickable:hover {
  background: var(--fill) !important;
}

.gantt-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gantt-row {
  display: flex;
  align-items: center;
  min-height: 40px;
  cursor: pointer;
  transition: background var(--transition);
  border-radius: var(--radius-sm);
  padding: 4px 0;
}
.gantt-row:hover {
  background: var(--fill);
}
.gantt-row:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}
.gantt-row:nth-child(even):hover {
  background: var(--fill);
}

.gantt-task-label {
  width: 100px;
  min-width: 100px;
  padding-right: 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}

.gantt-timeline {
  flex: 1;
  display: flex;
  flex-direction: row;
  position: relative;
  min-width: 0;
  min-height: 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.02);
}

.gantt-cell {
  flex: 1;
  min-width: 0;
  min-height: 32px;
  border-right: 1px solid var(--separator);
  background: transparent;
  transition: background var(--transition);
}
.gantt-cell.gantt-cell-sun {
  background: rgba(198, 40, 40, 0.06);
}
.gantt-cell.gantt-cell-sat {
  background: rgba(0, 0, 0, 0.02);
}
.gantt-cell.gantt-cell-today {
  background: rgba(11, 107, 203, 0.06);
  border-left: 1px solid rgba(11, 107, 203, 0.2);
  border-right: 1px solid rgba(11, 107, 203, 0.2);
  position: relative;
}

.gantt-bar {
  position: absolute;
  top: 6px;
  height: 24px;
  border-radius: 6px;
  pointer-events: auto;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.gantt-bar:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}
.gantt-bar-high {
  background: var(--danger);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.gantt-bar-high:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.gantt-bar-medium {
  background: var(--primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.gantt-bar-medium:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.gantt-bar-low {
  background: var(--success);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.gantt-bar-low:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 선택된 행 */
.gantt-row-active {
  background: rgba(11, 107, 203, 0.1) !important;
  border-radius: var(--radius-sm);
  box-shadow: inset 3px 0 0 var(--primary);
}
.gantt-row-active .gantt-bar {
  box-shadow: 0 0 0 2px var(--card), 0 2px 8px rgba(0, 0, 0, 0.15);
}
.gantt-row-active .gantt-task-label {
  font-weight: 600;
  color: var(--primary);
}

.gantt-empty {
  padding: 40px 24px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--fill);
  border-radius: var(--radius-md);
  margin: 0 8px;
  border: 1px dashed var(--separator);
}
.gantt-empty::before {
  content: "";
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--separator);
  background: linear-gradient(135deg, rgba(11, 107, 203, 0.16), rgba(11, 107, 203, 0.03));
  display: block;
  margin-bottom: 12px;
  opacity: 0.9;
  margin-left: auto;
  margin-right: auto;
}

/* 툴팁 */
.chart-tooltip {
  position: fixed;
  background: var(--card);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  pointer-events: none;
  z-index: 200;
  opacity: 0;
  transition: opacity var(--transition);
  max-width: 200px;
  text-align: center;
  border: 1px solid var(--separator);
  box-shadow: var(--shadow-md);
}
.chart-tooltip.show {
  opacity: 1;
}

/* ── 하단 네비게이션 ── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1120px;
  background: var(--card);
  border-top: 1px solid var(--separator);
  display: flex;
  padding: 10px 0 14px;
  z-index: 100;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.04);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  border: none;
  background: transparent;
  font-size: 10px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.15s;
}
.nav-item.active {
  color: var(--primary);
}
.nav-icon {
  font-size: 22px;
}

/* ── 모달 (Bottom Sheet) ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 150;
  display: flex;
  align-items: flex-end;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity var(--transition);
}
.modal-overlay.hidden {
  display: none;
}

.modal {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 20px 24px 32px;
  animation: slideUp 0.28s ease-out;
  max-height: 88vh;
  overflow-y: auto;
  border: 1px solid var(--separator);
  border-bottom: none;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.08);
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

.modal-handle {
  width: 32px;
  height: 4px;
  background: var(--separator);
  border-radius: 2px;
  margin: 0 auto 16px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.form-group {
  margin-bottom: 14px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}
.form-group.half {
  flex: 1;
  margin-bottom: 0;
}

.input-wrapper {
  position: relative;
}

#todo-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg);
  border: none;
  border-radius: var(--radius-sm);
  outline: none;
  transition: background 0.15s;
  box-sizing: border-box;
}

.form-row-all-day {
  align-items: flex-end;
}
.all-day-group {
  flex-shrink: 0;
}
.all-day-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.all-day-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}
.time-inputs-row {
  flex: 1;
  margin-bottom: 0;
}
.time-inputs-row input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

input[type="date"],
input[type="time"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  color: var(--text-primary);
  outline: none;
  transition: background 0.15s;
  -webkit-appearance: none;
}
input[type="text"]:focus,
select:focus,
textarea:focus {
  background: var(--fill);
}

textarea {
  resize: none;
}

/* 자동완성 */
.autocomplete-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--card);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 200;
  list-style: none;
  max-height: 160px;
  overflow-y: auto;
}
.autocomplete-list.hidden {
  display: none;
}
.autocomplete-list li {
  padding: 11px 14px;
  font-size: 14px;
  cursor: pointer;
  border-bottom: 0.5px solid var(--separator);
  transition: background 0.1s;
}
.autocomplete-list li:last-child {
  border: none;
}
.autocomplete-list li:active {
  background: var(--bg);
}

/* 템플릿 제안 */
.template-suggestion {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 122, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
}
.template-suggestion.hidden {
  display: none;
}
.template-suggestion button {
  margin-left: auto;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

/* 하위 작업 칩 */
.subtask-suggestion {
  margin-bottom: 14px;
}
.subtask-suggestion.hidden {
  display: none;
}
.subtask-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.subtask-chip {
  background: var(--fill);
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: 1.5px solid transparent;
}
.subtask-chip.selected {
  background: rgba(0, 122, 255, 0.1);
  color: var(--primary);
  border-color: var(--primary);
}

/* 모달 버튼 */
.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.btn-cancel {
  flex: 1;
  padding: 14px;
  background: var(--fill);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
}
.btn-add {
  flex: 2;
  padding: 14px;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  color: white;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-add:hover {
  background: var(--primary-hover);
}
.btn-add:active {
  opacity: 0.95;
}

/* 유틸 */
.hidden {
  display: none !important;
}

/* ── 날짜 선택 팝업 (할일 있는 날 클릭 시) ── */
.date-choice-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 160;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.date-choice-overlay.hidden {
  display: none !important;
}
.date-choice-popup {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 24px 20px;
  max-width: 320px;
  width: 100%;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--separator);
  position: relative;
}
.date-choice-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-align: center;
}
.date-choice-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.date-choice-btn {
  padding: 14px 16px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.date-choice-btn:active {
  transform: scale(0.98);
}
.date-choice-btn-view {
  background: var(--fill);
  color: var(--text-primary);
}
.date-choice-btn-view:hover {
  background: var(--separator);
}
.date-choice-btn-add {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}
.date-choice-btn-add:hover {
  filter: brightness(1.05);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}
.date-choice-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  font-size: 18px;
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.date-choice-close:hover {
  background: var(--fill);
  color: var(--text-primary);
}

/* ── 원형 시계 타임 피커 ── */
.time-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 170;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.time-picker-overlay.hidden {
  display: none !important;
}
.time-picker-popup {
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 24px 20px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--separator);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.time-picker-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.time-picker-mode-row,
.time-picker-ampm-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.time-picker-mode-btn,
.time-picker-ampm-btn {
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--separator);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.time-picker-mode-btn:hover,
.time-picker-ampm-btn:hover {
  background: var(--fill);
  color: var(--text-primary);
}
.time-picker-mode-btn.active,
.time-picker-ampm-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.clock-wrap {
  padding: 8px;
}
.clock-face {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--separator);
  position: relative;
  touch-action: none;
}
.clock-face .clock-number {
  position: absolute;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  left: 50%;
  top: 50%;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: 50% 50%;
  pointer-events: none;
}
.clock-hand {
  position: absolute;
  left: 50%;
  bottom: 50%;
  transform-origin: 50% 100%;
  pointer-events: none;
}
.clock-hand-hour {
  width: 6px;
  height: 45px;
  margin-left: -3px;
  background: var(--text-primary);
  border-radius: 3px;
  z-index: 3;
}
.clock-hand-minute {
  width: 4px;
  height: 65px;
  margin-left: -2px;
  background: var(--primary);
  border-radius: 2px;
  z-index: 2;
}
.time-picker-display {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: 0.05em;
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border: 2px solid rgba(234, 179, 8, 0.7);
  border-radius: var(--radius-md);
  background: var(--bg);
  text-align: center;
}
.time-picker-display:focus {
  outline: none;
  border-color: rgba(234, 179, 8, 1);
  box-shadow: 0 0 0 2px rgba(234, 179, 8, 0.2);
}
.time-picker-actions {
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: 12px;
}
.time-picker-actions .time-picker-cancel {
  order: 1;
}
.time-picker-actions #time-picker-apply {
  order: 2;
  margin-left: auto;
}

/* 날짜 필터 중 표시 (기존 할일보기 선택 시) */
.date-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  margin-bottom: 8px;
  background: var(--fill);
  border-radius: var(--radius-md);
  border: 1px solid var(--separator);
}
.date-filter-bar.hidden {
  display: none !important;
}
.date-filter-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.date-filter-clear {
  padding: 6px 12px;
  border: none;
  border-radius: 8px;
  background: var(--fill);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.date-filter-clear:hover {
  background: var(--separator);
  color: var(--text-primary);
}

/* ── 다크 모드 ── */
[data-theme="dark"] {
  --bg: #0f0f0f;
  --card: #1a1a1a;
  --primary: #4a9eff;
  --primary-hover: #6bb1ff;
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-tertiary: #6b6b6b;
  --separator: #2a2a2a;
  --fill: #252525;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .tab.active {
  background: transparent;
  box-shadow: none;
}

[data-theme="dark"] .schedule-section {
  background: var(--card);
  border-color: var(--separator);
  box-shadow: var(--shadow);
}

[data-theme="dark"] .schedule-header {
  border-bottom-color: var(--separator);
}

[data-theme="dark"] .schedule-title {
  color: var(--text-primary);
}
[data-theme="dark"] .schedule-title::before {
  background: var(--primary);
}

[data-theme="dark"] .month-nav {
  background: var(--fill);
  border-color: var(--separator);
}
[data-theme="dark"] .month-nav button {
  background: var(--card);
  color: var(--text-secondary);
}
[data-theme="dark"] .month-nav button:hover {
  background: var(--primary);
  color: #fff;
}
[data-theme="dark"] #current-month-label {
  color: var(--text-primary);
}

[data-theme="dark"] .gantt-wrap {
  background: var(--bg);
  border-color: var(--separator);
}
[data-theme="dark"] .gantt-header-row {
  border-bottom-color: var(--separator);
}
[data-theme="dark"] .gantt-label-header {
  color: var(--text-tertiary);
}
[data-theme="dark"] .gantt-day-num {
  color: var(--text-secondary);
}
[data-theme="dark"] .gantt-day-wd {
  color: var(--text-tertiary);
}
[data-theme="dark"] .gantt-day-label.gantt-day-today .gantt-day-num,
[data-theme="dark"] .gantt-day-label.gantt-day-today .gantt-day-wd {
  color: var(--primary);
}
[data-theme="dark"] .gantt-day-label.gantt-day-today {
  background: rgba(74, 158, 255, 0.12);
  border-color: rgba(74, 158, 255, 0.25);
}
[data-theme="dark"] .gantt-task-label {
  color: var(--text-primary);
}
[data-theme="dark"] .gantt-timeline {
  background: rgba(255, 255, 255, 0.02);
}
[data-theme="dark"] .gantt-cell {
  border-right-color: var(--separator);
}
[data-theme="dark"] .gantt-cell.gantt-cell-today {
  background: rgba(74, 158, 255, 0.08);
  border-color: rgba(74, 158, 255, 0.2);
}
[data-theme="dark"] .gantt-row:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}
[data-theme="dark"] .gantt-row:hover {
  background: var(--fill);
}
[data-theme="dark"] .gantt-row-active .gantt-task-label {
  color: var(--primary);
}
[data-theme="dark"] .gantt-empty {
  color: var(--text-tertiary);
  background: var(--fill);
  border-color: var(--separator);
}

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] input[type="date"],
[data-theme="dark"] input[type="time"] {
  background: var(--fill);
  color: var(--text-primary);
  border: 1px solid var(--separator);
  color-scheme: dark;
}
[data-theme="dark"] #todo-input {
  background: var(--fill);
  color: var(--text-primary);
  border: 1px solid var(--separator);
}
[data-theme="dark"] #todo-input::placeholder {
  color: var(--text-tertiary);
}
[data-theme="dark"] input[type="date"]:focus,
[data-theme="dark"] input[type="time"]:focus,
[data-theme="dark"] #todo-input:focus {
  background: var(--fill);
  border-color: var(--primary);
}

[data-theme="dark"] select,
[data-theme="dark"] select option {
  background: #1a1a1a;
  color: #f5f7fb;
}

[data-theme="dark"] .chart-tooltip {
  background: var(--card);
  color: var(--text-primary);
  border-color: var(--separator);
}

[data-theme="dark"] .badge.업무 {
  background: rgba(74, 158, 255, 0.32);
  color: #d9ecff;
}
[data-theme="dark"] .badge.건강 {
  background: rgba(46, 125, 50, 0.36);
  color: #def7df;
}
[data-theme="dark"] .badge.학습 {
  background: rgba(237, 108, 2, 0.36);
  color: #ffe4bf;
}
[data-theme="dark"] .badge.생활 {
  background: rgba(198, 40, 40, 0.34);
  color: #ffd7db;
}

/* ── Premium Service UI Overrides (Theme-Aware) ── */
:root {
  --hero-accent: #e50914;
  --premium-text: #161a23;
  --premium-text-muted: #4a5568;
  --premium-icon: #243047;
  --premium-header: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.72) 64%, rgba(255, 255, 255, 0) 100%);
  --premium-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(247, 250, 255, 0.9) 100%);
  --premium-surface-soft: rgba(255, 255, 255, 0.76);
  --premium-border: rgba(31, 42, 68, 0.14);
  --premium-bg:
    radial-gradient(900px 480px at 88% -12%, rgba(229, 9, 20, 0.12), transparent 62%),
    radial-gradient(760px 420px at 5% -8%, rgba(37, 99, 235, 0.1), transparent 58%),
    linear-gradient(180deg, #f4f7ff 0%, #eef2fb 48%, #e7ecf8 100%);
}

[data-theme="dark"] {
  --premium-text: #f5f7fb;
  --premium-text-muted: #c8d1e3;
  --premium-icon: #edf2ff;
  --premium-header: linear-gradient(180deg, rgba(5, 6, 8, 0.84) 0%, rgba(5, 6, 8, 0.52) 64%, rgba(5, 6, 8, 0) 100%);
  --premium-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.04) 100%);
  --premium-surface-soft: rgba(255, 255, 255, 0.06);
  --premium-border: rgba(255, 255, 255, 0.18);
  --premium-bg:
    radial-gradient(1000px 540px at 85% -10%, rgba(229, 9, 20, 0.16), transparent 62%),
    radial-gradient(700px 380px at 8% -8%, rgba(71, 106, 255, 0.14), transparent 58%),
    linear-gradient(180deg, #181a21 0%, #101219 48%, #0a0b10 100%);
}

html,
body {
  max-width: none;
  margin: 0;
}

body {
  background: var(--premium-bg);
  color: var(--premium-text);
}

.header {
  padding: 18px 20px 6px;
  background: var(--premium-header);
  border-bottom: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-top,
.tab-group,
.todo-list,
.schedule-section {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

.header-top {
  padding: 0 4px;
}

.header-date {
  color: var(--premium-text-muted);
  font-size: 12px;
}

.header-title {
  color: var(--premium-text);
  font-size: 30px;
  letter-spacing: -0.04em;
}

.theme-toggle {
  border: 1px solid var(--premium-border);
  background: var(--premium-surface-soft);
  color: var(--premium-text);
}

.theme-toggle:hover {
  background: var(--premium-surface);
}

.add-fab {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(120deg, #ff3d45 0%, var(--hero-accent) 80%);
  box-shadow: 0 10px 28px rgba(229, 9, 20, 0.24);
}

.tab-group {
  border-bottom: 1px solid var(--premium-border);
}

.tab {
  color: var(--premium-text-muted);
  font-size: 14px;
  font-weight: 600;
  padding: 14px 10px;
}

.tab.active {
  color: var(--premium-text);
  border-bottom-color: var(--hero-accent);
}

.todo-list {
  padding: 26px 20px 92px;
}

#todo-list-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.todo-card {
  margin-bottom: 0;
  min-height: 120px;
  border: 1px solid var(--premium-border);
  background: var(--premium-surface);
  box-shadow: 0 14px 34px rgba(13, 20, 36, 0.18);
  transition: transform 160ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 160ms cubic-bezier(0.2, 0.8, 0.2, 1), border-color 160ms ease;
}

.todo-card:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.32);
  box-shadow: 0 22px 44px rgba(13, 20, 36, 0.28);
}

.todo-title {
  color: var(--premium-text);
  font-size: 17px;
}

.todo-date,
.todo-memo-preview,
.todo-detail,
.todo-detail-label {
  color: var(--premium-text-muted);
}

.todo-date {
  font-size: 14px;
}

.todo-actions button {
  color: var(--premium-text-muted);
  font-size: 18px;
}

.todo-actions button:hover {
  background: var(--premium-surface-soft);
  color: var(--premium-text);
}

.schedule-section {
  margin-top: 8px;
  background: var(--premium-surface);
  border: 1px solid var(--premium-border);
  box-shadow: 0 22px 44px rgba(13, 20, 36, 0.24);
}

.schedule-title {
  color: var(--premium-text);
  font-size: 18px;
}
.schedule-title::before {
  height: 20px;
}

.gantt-wrap {
  background: var(--premium-surface-soft);
  border-color: var(--premium-border);
}

.gantt-row:nth-child(even) {
  background: rgba(148, 163, 184, 0.08);
}

.gantt-row:hover {
  background: rgba(148, 163, 184, 0.14);
}

.empty-state {
  padding: 80px 24px;
  color: var(--premium-text-muted);
}

.empty-state p:first-child {
  font-size: 56px;
  line-height: 1.2;
}

.template-suggestion span:first-of-type {
  font-size: 18px;
}

.subtask-suggestion label {
  font-size: 15px;
}

.modal,
.date-choice-popup,
.time-picker-popup {
  background: var(--premium-surface);
  color: var(--premium-text);
  border-color: var(--premium-border);
}

#todo-input,
input[type="date"],
input[type="time"],
select,
textarea {
  background: var(--premium-surface-soft);
  border: 1px solid var(--premium-border);
  color: var(--premium-text);
}

#todo-input::placeholder,
textarea::placeholder {
  color: color-mix(in srgb, var(--premium-text-muted) 72%, transparent);
}

input[type="text"]:focus,
select:focus,
textarea:focus,
input[type="date"]:focus,
input[type="time"]:focus {
  background: color-mix(in srgb, var(--premium-surface-soft) 86%, white 14%);
  border-color: color-mix(in srgb, var(--hero-accent) 45%, var(--premium-border) 55%);
}

.month-nav {
  background: var(--premium-surface-soft);
  border-color: var(--premium-border);
}

.month-nav button {
  background: transparent;
  color: var(--premium-text-muted);
  border: 1px solid transparent;
}

.month-nav button:hover {
  background: color-mix(in srgb, var(--hero-accent) 16%, transparent);
  color: var(--premium-text);
}

.chart-tooltip {
  background: var(--premium-surface);
  color: var(--premium-text);
  border-color: var(--premium-border);
}

.gantt-empty::before {
  content: "";
}

.ui-icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  vertical-align: -0.14em;
  color: var(--premium-icon);
}

.icon-inline {
  width: 1.05em;
  height: 1.05em;
}

.icon-button {
  width: 18px;
  height: 18px;
  vertical-align: middle;
}

.theme-toggle .icon-button {
  width: 19px;
  height: 19px;
}

.empty-state-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
}

.empty-state-icon {
  width: 56px;
  height: 56px;
  color: color-mix(in srgb, var(--premium-text-muted) 84%, transparent);
}

.schedule-title .icon-inline {
  margin-right: 8px;
}

.todo-date .icon-inline {
  margin-right: 4px;
  color: var(--premium-icon);
}

.form-group label .icon-inline {
  margin-right: 6px;
  color: var(--premium-icon);
}

.theme-toggle .ui-icon,
.todo-actions .ui-icon,
.schedule-title .ui-icon,
.template-suggestion .ui-icon,
.subtask-suggestion .ui-icon {
  color: var(--premium-icon);
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  opacity: 0.95;
  cursor: pointer;
}

[data-theme="light"] input[type="date"]::-webkit-calendar-picker-indicator,
[data-theme="light"] input[type="time"]::-webkit-calendar-picker-indicator {
  filter: brightness(0) saturate(100%);
}

[data-theme="dark"] input[type="date"]::-webkit-calendar-picker-indicator,
[data-theme="dark"] input[type="time"]::-webkit-calendar-picker-indicator {
  filter: none !important;
  opacity: 1;
}

@media (max-width: 960px) {
  #todo-list-cards {
    grid-template-columns: 1fr;
  }

  .header-title {
    font-size: 24px;
  }
}