:root {
    --bg: #f3f2ef;
    --card-bg: #ffffff;
    --text-primary: #1d2226;
    --text-secondary: #56687a;
    --input-border: #8896a4;
    --input-border-focus: #0a66c2;
    --input-bg: #ffffff;
    --btn-primary: #0a66c2;
    --btn-primary-hover: #004182;
    --btn-primary-text: #ffffff;
    --link-color: #0a66c2;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.15);
    --divider: #e0e0e0;
    --alert-error-bg: #fff0f0;
    --alert-error-color: #cc1016;
    --alert-error-border: #ffd0d0;
    --alert-success-bg: #f0faf0;
    --alert-success-color: #057642;
    --alert-success-border: #c6f0d8;
    --todo-item-bg: #f8f9fa;
    --todo-item-border: #e2e8f0;
    --todo-item-hover: #eef3f8;
    --tab-active-bg: #0a66c2;
    --tab-border: #0a66c2;
    --logout-bg: #fff0f0;
    --logout-color: #cc1016;
    --logout-border: #ffd0d0;
    --spinner-color: rgba(255,255,255,0.5);
    --overdue-bg: #fff4e5;
    --overdue-border: #f59e0b;
    --overdue-text: #92400e;
    --deadline-chip-bg: #e0f2fe;
    --deadline-chip-color: #0369a1;
    --deadline-picker-bg: #f0f7ff;
    --timeline-line: #cbd5e1;
    --timeline-dot: #0a66c2;
    --timeline-dot-overdue: #ef4444;
    --timeline-dot-today: #f59e0b;
    --timeline-dot-done: #10b981;
}
[data-theme="dark"] {
    --bg: #1b1f23;
    --card-bg: #283339;
    --text-primary: #e7e9ea;
    --text-secondary: #8b9197;
    --input-border: #546474;
    --input-border-focus: #70b5f9;
    --input-bg: #1e2a32;
    --btn-primary: #70b5f9;
    --btn-primary-hover: #9ecfff;
    --btn-primary-text: #1b1f23;
    --link-color: #70b5f9;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.5);
    --divider: #38434f;
    --alert-error-bg: #3d1f1f;
    --alert-error-color: #ff6b6b;
    --alert-error-border: #5c2a2a;
    --alert-success-bg: #1a3a2a;
    --alert-success-color: #5cc97e;
    --alert-success-border: #2a5c3a;
    --todo-item-bg: #1e2a32;
    --todo-item-border: #38434f;
    --todo-item-hover: #253340;
    --tab-active-bg: #70b5f9;
    --tab-border: #70b5f9;
    --logout-bg: #3d1f1f;
    --logout-color: #ff6b6b;
    --logout-border: #5c2a2a;
    --overdue-bg: #2d1f0a;
    --overdue-border: #d97706;
    --overdue-text: #fcd34d;
    --deadline-chip-bg: #1e3a4a;
    --deadline-chip-color: #7dd3fc;
    --deadline-picker-bg: #1a2a38;
    --timeline-line: #38434f;
    --timeline-dot: #70b5f9;
    --timeline-dot-overdue: #f87171;
    --timeline-dot-today: #fbbf24;
    --timeline-dot-done: #34d399;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 16px;
    transition: background 0.3s, color 0.3s;
}
.section {
    display: none;
    width: 100%;
    max-width: 500px;
    flex-direction: column;
    align-items: center;
}
.section.active { display: flex; }
#section-todo { max-width: 620px; }
.theme-toggle {
    position: fixed;
    top: 20px; right: 20px;
    width: 44px; height: 44px;
    border-radius: 50%; border: none;
    background: var(--card-bg);
    box-shadow: var(--card-shadow);
    cursor: pointer; font-size: 20px;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s; z-index: 999;
}
.theme-toggle:hover { transform: scale(1.1); }
.logo-wrap { margin-bottom: 20px; text-align: left; width: 100%; }
.logo { display: inline-flex; align-items: center; gap: 4px; }
.logo-text { font-size: 32px; font-weight: 800; color: var(--text-primary); letter-spacing: -1px; }
.logo-badge { background: var(--btn-primary); color: var(--btn-primary-text); font-size: 18px; font-weight: 800; padding: 2px 8px 4px; border-radius: 4px; }
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 36px 36px 32px;
    width: 100%;
    box-shadow: var(--card-shadow);
    transition: background 0.3s;
    animation: fadeIn 0.35s ease;
}
@keyframes fadeIn { from { opacity:0; transform:translateY(-12px); } to { opacity:1; transform:translateY(0); } }
.card-title { font-size: 28px; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; letter-spacing: -0.5px; }
.card-subtitle { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }
.alert { padding: 10px 14px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; display: none; border: 1px solid; }
.alert-error { background: var(--alert-error-bg); color: var(--alert-error-color); border-color: var(--alert-error-border); }
.alert-success { background: var(--alert-success-bg); color: var(--alert-success-color); border-color: var(--alert-success-border); }
.input-wrap { position: relative; margin-bottom: 14px; width: 100%; }
.input-wrap input {
    width: 100%; padding: 15px 18px;
    border: 1px solid var(--input-border); border-radius: 8px;
    font-size: 16px; color: var(--text-primary); background: var(--input-bg);
    outline: none; transition: all 0.2s;
    -webkit-appearance: none; appearance: none; display: block;
}
.input-wrap input::placeholder { color: var(--text-secondary); }
.input-wrap input:focus { border-color: var(--input-border-focus); box-shadow: 0 0 0 3px rgba(10,102,194,0.12); }
.pw-toggle { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--link-color); font-size: 14px; font-weight: 600; cursor: pointer; padding: 4px; }
.pw-toggle:hover { text-decoration: underline; }
.email-row { display: flex; gap: 8px; align-items: stretch; margin-bottom: 14px; width: 100%; }
.email-row .input-wrap { flex: 1; margin-bottom: 0; min-width: 0; }
.btn-verify { flex-shrink: 0; padding: 0 18px; background: var(--card-bg); color: var(--link-color); border: 1px solid var(--link-color); border-radius: 8px; font-size: 13px; font-weight: 700; cursor: pointer; white-space: nowrap; transition: all 0.2s; }
.btn-verify:hover:not(:disabled) { background: var(--todo-item-hover); }
.btn-verify:disabled { opacity: 0.5; cursor: not-allowed; }
.link-blue { color: var(--link-color); font-size: 14px; font-weight: 600; text-decoration: none; cursor: pointer; display: inline-block; margin-bottom: 16px; }
.link-blue:hover { text-decoration: underline; }
.btn-main { width: 100%; padding: 15px; background: var(--btn-primary); color: var(--btn-primary-text); border: none; border-radius: 30px; font-size: 17px; font-weight: 700; cursor: pointer; transition: all 0.2s; margin-top: 8px; -webkit-appearance: none; display: block; }
.btn-main:hover:not(:disabled) { background: var(--btn-primary-hover); }
.btn-main:disabled { opacity: 0.6; cursor: not-allowed; }
.below-card { margin-top: 20px; font-size: 15px; color: var(--text-secondary); text-align: center; width: 100%; }
.below-card a { color: var(--link-color); font-weight: 700; text-decoration: none; cursor: pointer; }
.below-card a:hover { text-decoration: underline; }
/* ========== 투두 컨테이너 ========== */
.todo-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 28px 32px;
    width: 100%;
    box-shadow: var(--card-shadow);
    transition: background 0.3s;
    animation: fadeIn 0.35s ease;
}
.todo-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.todo-header-left { display: flex; align-items: center; gap: 10px; }
.todo-logo-badge { background: var(--btn-primary); color: var(--btn-primary-text); font-size: 13px; font-weight: 800; padding: 3px 8px; border-radius: 4px; }
.todo-title { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.btn-logout { padding: 7px 16px; background: var(--logout-bg); color: var(--logout-color); border: 1px solid var(--logout-border); border-radius: 20px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s; white-space: nowrap; }
.btn-logout:hover { opacity: 0.8; }
.todo-input-row { display: flex; gap: 10px; margin-bottom: 16px; width: 100%; }
.todo-input-row input { flex: 1; min-width: 0; padding: 13px 16px; border: 1px solid var(--input-border); border-radius: 8px; font-size: 15px; color: var(--text-primary); background: var(--input-bg); outline: none; transition: all 0.2s; -webkit-appearance: none; }
.todo-input-row input::placeholder { color: var(--text-secondary); }
.todo-input-row input:focus { border-color: var(--input-border-focus); box-shadow: 0 0 0 3px rgba(10,102,194,0.12); }
.btn-add { flex-shrink: 0; padding: 13px 22px; background: var(--btn-primary); color: var(--btn-primary-text); border: none; border-radius: 8px; font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap; transition: all 0.2s; }
.btn-add:hover:not(:disabled) { background: var(--btn-primary-hover); }
.btn-add:disabled { opacity: 0.6; cursor: not-allowed; }
/* 필터 탭 */
.filter-tabs { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.tab-btn { padding: 6px 18px; border: 1px solid var(--tab-border); border-radius: 20px; background: transparent; font-size: 13px; font-weight: 600; color: var(--link-color); cursor: pointer; transition: all 0.2s; }
.tab-btn.active { background: var(--tab-active-bg); color: var(--btn-primary-text); }
.tab-btn:hover:not(.active) { background: var(--todo-item-hover); }
/* 투두 리스트 */
.todo-list { list-style: none; display: flex; flex-direction: column; gap: 8px; max-height: 460px; overflow-y: auto; padding-right: 2px; }
.todo-list::-webkit-scrollbar { width: 4px; }
.todo-list::-webkit-scrollbar-thumb { background: var(--divider); border-radius: 4px; }
.todo-item {
    background: var(--todo-item-bg);
    border-radius: 10px;
    border: 1px solid var(--todo-item-border);
    transition: all 0.2s;
    animation: slideIn 0.25s ease;
    overflow: hidden;
    flex-shrink: 0; /* 항목이 많아도 세로로 눌리지 않고 스크롤되도록 */
}
@keyframes slideIn { from { opacity:0; transform:translateX(-8px); } to { opacity:1; transform:translateX(0); } }
.todo-item:hover { background: var(--todo-item-hover); border-color: var(--input-border-focus); }
.todo-item.overdue {
    background: var(--overdue-bg) !important;
    border-color: var(--overdue-border) !important;
}
.todo-item.overdue:hover { filter: brightness(0.97); }
.todo-item-main { display: flex; align-items: center; gap: 12px; padding: 13px 15px; }
.todo-item.completed { opacity: 0.65; }
.todo-checkbox { width: 20px; height: 20px; min-width: 20px; border: 2px solid var(--input-border); border-radius: 4px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; background: var(--input-bg); }
.todo-checkbox.checked { background: var(--btn-primary); border-color: var(--btn-primary); }
.todo-checkbox.checked::after { content: "✓"; color: white; font-size: 12px; font-weight: 700; }
.todo-content { flex: 1; min-width: 0; }
.todo-text { font-size: 14px; color: var(--text-primary); word-break: break-word; }
.todo-item.completed .todo-text { text-decoration: line-through; color: var(--text-secondary); }
.todo-item.overdue .todo-text { color: var(--overdue-text); }
/* 마감기한 칩 */
.deadline-chip {
    display: inline-flex; align-items: center; gap: 4px;
    margin-top: 4px;
    font-size: 11px; font-weight: 600;
    padding: 2px 8px; border-radius: 20px;
    background: var(--deadline-chip-bg);
    color: var(--deadline-chip-color);
}
.deadline-chip.overdue {
    background: var(--overdue-bg);
    color: var(--overdue-text);
    border: 1px solid var(--overdue-border);
}
.todo-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.btn-deadline {
    padding: 4px 8px; background: none;
    border: 1px solid var(--todo-item-border);
    border-radius: 4px; color: var(--text-secondary);
    font-size: 13px; cursor: pointer; transition: all 0.2s;
    line-height: 1;
}
.btn-deadline:hover { border-color: var(--input-border-focus); color: var(--link-color); }
.btn-deadline.active { border-color: var(--input-border-focus); color: var(--link-color); background: var(--deadline-chip-bg); }
.btn-delete { padding: 4px 10px; background: none; border: 1px solid var(--todo-item-border); border-radius: 4px; color: var(--text-secondary); font-size: 12px; cursor: pointer; transition: all 0.2s; }
.btn-delete:hover { border-color: var(--logout-border); color: var(--logout-color); background: var(--logout-bg); }
/* 마감기한 picker 패널 */
.deadline-panel {
    display: none;
    padding: 12px 15px 14px;
    background: var(--deadline-picker-bg);
    border-top: 1px solid var(--todo-item-border);
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.deadline-panel.open { display: flex; }
.deadline-panel label { font-size: 12px; font-weight: 600; color: var(--text-secondary); white-space: nowrap; }
.deadline-panel input[type="datetime-local"] {
    flex: 1; min-width: 180px;
    padding: 7px 10px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-primary);
    background: var(--input-bg);
    outline: none;
}
.deadline-panel input[type="datetime-local"]:focus { border-color: var(--input-border-focus); }
.btn-deadline-save { padding: 7px 14px; background: var(--btn-primary); color: var(--btn-primary-text); border: none; border-radius: 6px; font-size: 12px; font-weight: 700; cursor: pointer; white-space: nowrap; transition: all 0.2s; }
.btn-deadline-save:hover { background: var(--btn-primary-hover); }
.btn-deadline-remove { padding: 7px 10px; background: none; border: 1px solid var(--logout-border); color: var(--logout-color); border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer; white-space: nowrap; transition: all 0.2s; }
.btn-deadline-remove:hover { background: var(--logout-bg); }
/* 카테고리 / 반복 */
.category-badge {
    display: inline-flex; align-items: center; gap: 3px;
    margin-top: 4px; margin-left: 6px;
    font-size: 11px; font-weight: 600;
    padding: 2px 8px; border-radius: 20px;
    background: var(--tab-active-bg); color: var(--btn-primary-text);
}
.repeat-icon { font-size: 11px; margin-left: 4px; opacity: 0.75; }
.repeat-editor { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; width: 100%; }
.repeat-editor small { width: 100%; color: var(--text-secondary); line-height: 1.5; }
.repeat-custom { width: 100%; padding: 10px 0; }
.repeat-custom[hidden] { display: none; }
.repeat-days { display: flex; flex-wrap: wrap; gap: 6px; }
.repeat-days[hidden] { display: none; }
.repeat-day { cursor: pointer; }
.repeat-day input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.repeat-day span { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border: 1px solid var(--input-border); border-radius: 50%; background: var(--input-bg); }
.repeat-day input:checked + span { background: var(--btn-primary); color: var(--btn-primary-text); border-color: var(--btn-primary); }
.repeat-day input:focus-visible + span { outline: 2px solid var(--input-border-focus); outline-offset: 2px; }
.deadline-panel input[type="text"], .deadline-panel select {
    padding: 7px 10px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-primary);
    background: var(--input-bg);
    outline: none;
}
.deadline-panel input[type="text"] { min-width: 120px; }
.deadline-panel input[type="text"]:focus, .deadline-panel select:focus { border-color: var(--input-border-focus); }
.todo-category-input {
    width: 130px; padding: 13px 14px;
    border: 1px solid var(--input-border); border-radius: 8px;
    font-size: 15px; color: var(--text-primary);
    background: var(--input-bg); outline: none;
    transition: all 0.2s; -webkit-appearance: none;
}
.todo-category-input::placeholder { color: var(--text-secondary); }
.todo-category-input:focus { border-color: var(--input-border-focus); box-shadow: 0 0 0 3px rgba(10,102,194,0.12); }
/* 검색 / 정렬 도구 */
.list-tools { display: flex; gap: 8px; margin-bottom: 12px; }
.search-input {
    flex: 1; padding: 9px 12px;
    border: 1px solid var(--input-border); border-radius: 8px;
    font-size: 14px; color: var(--text-primary);
    background: var(--input-bg); outline: none; transition: all 0.2s;
}
.search-input:focus { border-color: var(--input-border-focus); }
.sort-select {
    padding: 9px 12px; border: 1px solid var(--input-border); border-radius: 8px;
    font-size: 13px; color: var(--text-primary); background: var(--input-bg);
    cursor: pointer; outline: none;
}
/* 통계 바 */
.stats-bar {
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
    margin-bottom: 14px; padding: 12px 14px;
    background: var(--todo-item-bg); border: 1px solid var(--todo-item-border);
    border-radius: 10px; font-size: 13px; color: var(--text-secondary);
}
.stats-bar .stats-text { font-weight: 600; white-space: nowrap; }
.stats-bar .stats-text b { color: var(--btn-primary); }
.progress-track { flex: 1; min-width: 80px; height: 8px; background: var(--divider); border-radius: 20px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--btn-primary); border-radius: 20px; transition: width 0.3s; }
.stats-actions { display: flex; gap: 6px; }
.stats-btn {
    padding: 5px 10px; border: 1px solid var(--todo-item-border); background: none;
    border-radius: 6px; font-size: 12px; font-weight: 600; color: var(--text-secondary);
    cursor: pointer; white-space: nowrap; transition: all 0.2s;
}
.stats-btn:hover { border-color: var(--input-border-focus); color: var(--link-color); }
/* 우선순위 / D-day / 메모 */
.priority-badge { display: inline-flex; align-items: center; gap: 3px; margin-top: 4px; margin-left: 6px; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; }
.priority-badge.p-high { background: #ffe3e0; color: #cc1016; }
.priority-badge.p-low { background: #e3ecfa; color: #0a66c2; }
:root[data-theme="dark"] .priority-badge.p-high { background: #4a2320; color: #ff9b93; }
:root[data-theme="dark"] .priority-badge.p-low { background: #1e3352; color: #7fb0f0; }
.dday-badge { display: inline-flex; align-items: center; margin-top: 4px; margin-left: 6px; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 20px; background: var(--deadline-chip-bg); color: var(--deadline-chip-color); }
.dday-badge.urgent { background: #ffe3e0; color: #cc1016; }
:root[data-theme="dark"] .dday-badge.urgent { background: #4a2320; color: #ff9b93; }
.memo-icon { font-size: 11px; margin-left: 4px; opacity: 0.7; }
.deadline-panel textarea {
    width: 100%; min-height: 52px; resize: vertical; padding: 7px 10px;
    border: 1px solid var(--input-border); border-radius: 6px; font-size: 13px;
    color: var(--text-primary); background: var(--input-bg); outline: none; font-family: inherit;
}
.deadline-panel textarea:focus { border-color: var(--input-border-focus); }
.edit-input {
    width: 100%; padding: 4px 8px; border: 1px solid var(--input-border-focus);
    border-radius: 6px; font-size: 14px; color: var(--text-primary);
    background: var(--input-bg); outline: none;
}
/* 헤더 우측 / 설정 버튼 */
.todo-header-right { display: flex; align-items: center; gap: 8px; }
.btn-settings { background: none; border: 1px solid var(--todo-item-border); border-radius: 8px; width: 34px; height: 34px; font-size: 15px; cursor: pointer; transition: all 0.2s; }
.btn-settings:hover { border-color: var(--input-border-focus); }
/* 서브태스크 */
.subtask-section { width: 100%; margin-top: 4px; }
.subtask-list { list-style: none; display: flex; flex-direction: column; gap: 4px; margin-bottom: 6px; }
.subtask-item { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.subtask-check { width: 16px; height: 16px; min-width: 16px; border: 2px solid var(--input-border); border-radius: 4px; cursor: pointer; display: flex; align-items: center; justify-content: center; background: var(--input-bg); }
.subtask-check.checked { background: var(--btn-primary); border-color: var(--btn-primary); }
.subtask-check.checked::after { content: "✓"; color: #fff; font-size: 10px; font-weight: 700; }
.subtask-text { flex: 1; color: var(--text-primary); word-break: break-word; }
.subtask-item.done .subtask-text { text-decoration: line-through; color: var(--text-secondary); }
.subtask-del { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 14px; line-height: 1; padding: 0 4px; }
.subtask-del:hover { color: var(--alert-error-color); }
.subtask-add-row { display: flex; gap: 6px; }
.subtask-add-row input { flex: 1; padding: 6px 9px; border: 1px solid var(--input-border); border-radius: 6px; font-size: 13px; color: var(--text-primary); background: var(--input-bg); outline: none; }
.subtask-add-row button { padding: 6px 12px; background: var(--btn-primary); color: var(--btn-primary-text); border: none; border-radius: 6px; font-size: 12px; font-weight: 700; cursor: pointer; }
.subtask-progress { font-size: 11px; margin-left: 6px; opacity: 0.75; }
/* 드래그 */
.drag-handle { cursor: grab; color: var(--text-secondary); font-size: 15px; padding: 0 2px; user-select: none; }
.todo-item.dragging { opacity: 0.5; }
.todo-item.drag-over { border-color: var(--btn-primary); border-style: dashed; }
/* 캘린더 */
#calendar-view { display: none; }
#calendar-view.active { display: block; animation: slideIn 0.25s ease; }
.cal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.cal-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.cal-nav { display: flex; gap: 6px; }
.cal-nav button { width: 32px; height: 32px; border: 1px solid var(--todo-item-border); background: var(--input-bg); border-radius: 8px; cursor: pointer; color: var(--text-primary); font-size: 14px; transition: all 0.2s; }
.cal-nav button:hover { border-color: var(--input-border-focus); }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-dow { text-align: center; font-size: 12px; font-weight: 700; color: var(--text-secondary); padding: 4px 0; }
.cal-dow.sun { color: #cc1016; }
.cal-dow.sat { color: #0a66c2; }
.cal-cell { min-height: 64px; border: 1px solid var(--todo-item-border); border-radius: 8px; padding: 4px; background: var(--todo-item-bg); cursor: pointer; overflow: hidden; transition: all 0.15s; }
.cal-cell:hover { border-color: var(--input-border-focus); }
.cal-cell.empty { background: transparent; border: none; cursor: default; }
.cal-cell.today { border-color: var(--btn-primary); box-shadow: 0 0 0 1px var(--btn-primary) inset; }
.cal-cell.selected { background: var(--todo-item-hover); border-color: var(--btn-primary); }
.cal-daynum { font-size: 12px; font-weight: 600; color: var(--text-primary); }
.cal-daynum.sun { color: #cc1016; }
.cal-daynum.sat { color: #0a66c2; }
.cal-dot-row { display: flex; flex-wrap: wrap; gap: 2px; margin-top: 3px; }
.cal-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--btn-primary); }
.cal-dot.done { background: var(--text-secondary); opacity: 0.5; }
.cal-dot.overdue { background: #cc1016; }
.cal-more { font-size: 10px; color: var(--text-secondary); }
.cal-selected-list { margin-top: 16px; }
.cal-selected-title { font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 8px; }
/* 모달 */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 100; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.open { display: flex; }
.modal-card { background: var(--card-bg); border-radius: 14px; padding: 24px; width: 100%; max-width: 380px; box-shadow: var(--card-shadow); max-height: 90vh; overflow-y: auto; }
.modal-title { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
.modal-section { padding: 14px 0; border-top: 1px solid var(--divider); }
.modal-section-title { font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 10px; }
.modal-section-title.danger { color: var(--alert-error-color); }
.modal-row { display: flex; gap: 8px; flex-wrap: wrap; }
.modal-input { width: 100%; padding: 10px 12px; margin-bottom: 8px; border: 1px solid var(--input-border); border-radius: 8px; font-size: 14px; color: var(--text-primary); background: var(--input-bg); outline: none; }
.modal-input:focus { border-color: var(--input-border-focus); }
.modal-btn { padding: 9px 14px; border: 1px solid var(--todo-item-border); background: var(--input-bg); color: var(--text-primary); border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.modal-btn:hover { border-color: var(--input-border-focus); }
.modal-btn.primary { background: var(--btn-primary); color: var(--btn-primary-text); border: none; width: 100%; }
.modal-btn.danger { background: none; border: 1px solid var(--alert-error-color); color: var(--alert-error-color); width: 100%; }
.modal-btn.danger:hover { background: var(--alert-error-bg); }
.modal-close { width: 100%; margin-top: 16px; padding: 10px; background: none; border: none; color: var(--text-secondary); font-size: 14px; cursor: pointer; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-secondary); }
.empty-state .emoji { font-size: 44px; margin-bottom: 10px; }
.empty-state p { font-size: 14px; }
/* 타임라인 뷰 */
#timeline-view { display: none; }
#timeline-view.active { display: block; }
.timeline-empty { text-align: center; padding: 40px 20px; color: var(--text-secondary); }
.timeline-empty .emoji { font-size: 44px; margin-bottom: 10px; }
.timeline-group { margin-bottom: 8px; }
.timeline-date-label {
    font-size: 12px; font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    padding-left: 28px;
}
.timeline-date-label.today-label { color: var(--timeline-dot-today); }
.timeline-date-label.overdue-label { color: var(--timeline-dot-overdue); }
.timeline-item {
    display: flex;
    gap: 0;
    position: relative;
    padding-bottom: 12px;
}
.timeline-item:not(:last-child) .timeline-line-col::after {
    content: '';
    position: absolute;
    left: 9px; top: 20px;
    width: 2px;
    bottom: 0;
    background: var(--timeline-line);
}
.timeline-line-col {
    width: 20px; min-width: 20px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.timeline-dot {
    width: 12px; height: 12px;
    border-radius: 50%;
    margin-top: 4px;
    flex-shrink: 0;
    border: 2px solid var(--card-bg);
    box-shadow: 0 0 0 2px var(--timeline-dot);
    background: var(--timeline-dot);
    z-index: 1;
}
.timeline-dot.overdue { background: var(--timeline-dot-overdue); box-shadow: 0 0 0 2px var(--timeline-dot-overdue); }
.timeline-dot.today { background: var(--timeline-dot-today); box-shadow: 0 0 0 2px var(--timeline-dot-today); }
.timeline-dot.done { background: var(--timeline-dot-done); box-shadow: 0 0 0 2px var(--timeline-dot-done); }
.timeline-card {
    flex: 1; min-width: 0;
    margin-left: 10px;
    background: var(--todo-item-bg);
    border: 1px solid var(--todo-item-border);
    border-radius: 8px;
    padding: 10px 14px;
    transition: all 0.2s;
}
.timeline-card:hover { background: var(--todo-item-hover); }
.timeline-card.overdue { background: var(--overdue-bg); border-color: var(--overdue-border); }
.timeline-card.done { opacity: 0.6; }
.timeline-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.timeline-card-text { font-size: 14px; color: var(--text-primary); font-weight: 500; flex: 1; min-width: 0; word-break: break-word; }
.timeline-card.overdue .timeline-card-text { color: var(--overdue-text); }
.timeline-card.done .timeline-card-text { text-decoration: line-through; color: var(--text-secondary); }
.timeline-time {
    font-size: 11px; color: var(--text-secondary);
    white-space: nowrap; flex-shrink: 0;
    margin-top: 2px;
}
.timeline-card.overdue .timeline-time { color: var(--overdue-text); opacity: 0.8; }
.timeline-badge {
    display: inline-block; margin-top: 6px;
    font-size: 10px; font-weight: 700;
    padding: 2px 7px; border-radius: 10px;
}
.timeline-badge.overdue-badge { background: var(--overdue-border); color: white; }
.timeline-badge.today-badge { background: var(--timeline-dot-today); color: white; }
.timeline-badge.done-badge { background: var(--timeline-dot-done); color: white; }
/* 스피너 */
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--spinner-color); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; margin-right: 6px; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }
/* 반응형 */
@media (max-width: 540px) {
    body { padding: 16px 12px; justify-content: flex-start; padding-top: 64px; }
    .section, #section-todo { max-width: 100%; }
    .card { padding: 28px 20px 24px; }
    .todo-container { padding: 22px 16px; }
    .card-title { font-size: 24px; }
    .email-row { flex-direction: column; }
    .btn-verify { width: 100%; padding: 13px; text-align: center; }
    .todo-input-row { flex-direction: column; }
    .todo-category-input { width: 100%; }
    .btn-add { width: 100%; padding: 13px; }
    .theme-toggle { top: 12px; right: 12px; width: 40px; height: 40px; font-size: 18px; }
    .deadline-panel { flex-direction: column; align-items: stretch; }
    .deadline-panel input[type="datetime-local"] { min-width: unset; width: 100%; }
}
.password-help { margin: -2px 0 14px; font-size: 12px; line-height: 1.6; color: var(--text-secondary); }