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

:root {
  --primary: #3B82F6;
  --primary-dark: #1D4ED8;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --border: #E2E8F0;
  --text: #1E293B;
  --text-muted: #64748B;
  --danger: #EF4444;
  --success: #22C55E;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* ═══════════════ 다크 모드 ═══════════════ */
[data-theme="dark"] {
  --primary: #60A5FA;
  --primary-dark: #3B82F6;
  --bg: #000000;
  --card: #111111;
  --border: #2A2A2A;
  --text: #F0F0F0;
  --text-muted: #909090;
  --danger: #F87171;
  --success: #4ADE80;
  --shadow: 0 1px 3px rgba(0,0,0,0.6);
}

/* 전체 텍스트/아이콘 색상 보장 */
[data-theme="dark"] body { color: #F0F0F0; }
[data-theme="dark"] button { color: #F0F0F0; }
[data-theme="dark"] a { color: #60A5FA; }

/* 헤더 */
[data-theme="dark"] .app-header { background: #111111; border-color: #2A2A2A; }
[data-theme="dark"] .app-header h1 { color: #F0F0F0; }
[data-theme="dark"] .notification-btn { color: #F0F0F0; }
[data-theme="dark"] .user-info { color: #909090; }

/* 반 탭 */
[data-theme="dark"] .class-tabs { background: #111111; border-color: #2A2A2A; }
[data-theme="dark"] .tab { color: #909090; }
[data-theme="dark"] .tab.active { background: #000000; color: #60A5FA; border-color: #2A2A2A; border-bottom: 2px solid #60A5FA; }
[data-theme="dark"] .tab:hover { color: #F0F0F0; }

/* 버튼들 */
[data-theme="dark"] .btn-primary { background: #2563EB; color: white; }
[data-theme="dark"] .btn-primary:hover { background: #1D4ED8; }
[data-theme="dark"] .btn-secondary { background: #1A1A1A; color: #F0F0F0; border-color: #3A3A3A; }
[data-theme="dark"] .btn-secondary:hover { background: #222222; }
[data-theme="dark"] .nav-btn { background: #1A1A1A; border-color: #3A3A3A; color: #F0F0F0; }
[data-theme="dark"] .nav-btn:hover { background: #222222; }
[data-theme="dark"] .today-btn { color: #60A5FA; border-color: #60A5FA; }
[data-theme="dark"] .today-btn:hover { background: #0D1F3C; }
[data-theme="dark"] .type-btn { background: #1A1A1A; border-color: #3A3A3A; color: #909090; }
[data-theme="dark"] .type-btn.active { background: #0D1F3C; color: #60A5FA; border-color: #3B82F6; }
[data-theme="dark"] .btn-delete { background: #7F1D1D; color: #FCA5A5; }
[data-theme="dark"] .btn-meal { background: #1C1400; color: #FCD34D; border-color: #3A2E00; }
[data-theme="dark"] .btn-meal:hover { background: #2A1F00; }
[data-theme="dark"] .btn-accept { background: #14532D; color: #86EFAC; }
[data-theme="dark"] .btn-reject { background: #7F1D1D; color: #FCA5A5; }
[data-theme="dark"] .rdm-btn { color: #F0F0F0; }
[data-theme="dark"] .rdm-btn:hover { background: #1A1A1A; }
[data-theme="dark"] .rdm-danger { color: #F87171; }

/* 캘린더 */
[data-theme="dark"] .calendar-grid { background: #2A2A2A; }
[data-theme="dark"] .calendar-day { background: #111111; }
[data-theme="dark"] .calendar-day-header { background: #111111; color: #909090; }
[data-theme="dark"] .calendar-day:hover { background: #1A1A1A; }
[data-theme="dark"] .calendar-day.selected { background: #0D1F3C; }
[data-theme="dark"] .calendar-day.today .day-num { background: #60A5FA; color: #000; }
[data-theme="dark"] .day-num { color: #F0F0F0; }

/* 상세 패널 */
[data-theme="dark"] .detail-card { background: #111111; }
[data-theme="dark"] .detail-card h3 { color: #F0F0F0; border-color: #2A2A2A; }
[data-theme="dark"] .section-title { color: #909090; }

/* 시간표 슬롯 */
[data-theme="dark"] .timetable-slot { border-color: #2A2A2A; background: #111111; }
[data-theme="dark"] .timetable-slot.clickable:hover { background: #1A1A1A; border-color: #60A5FA; }
[data-theme="dark"] .slot-label { color: #909090; }
[data-theme="dark"] .slot-subject { color: #F0F0F0; }
[data-theme="dark"] .slot-past .slot-label, [data-theme="dark"] .slot-past .slot-subject { color: #555555; }
[data-theme="dark"] .slot-current { background: #0D1F3C !important; border-color: #1D3A5F !important; border-left: 3px solid #60A5FA !important; }
[data-theme="dark"] .slot-current .slot-label { color: #60A5FA; }
[data-theme="dark"] .submission-section { background: #1A1200; border-color: #3A2E00; }
[data-theme="dark"] .submission-section h4 { color: #FCD34D; }

/* 뱃지 */
[data-theme="dark"] .badge-class { background: #0D1F3C; color: #93C5FD; }
[data-theme="dark"] .badge-personal { background: #052E16; color: #86EFAC; }
[data-theme="dark"] .badge-group { background: #1C1400; color: #FCD34D; }

/* 일정 카드 */
[data-theme="dark"] .schedule-card { background: #1A1A1A; border-color: #2A2A2A; }
[data-theme="dark"] .schedule-card-title { color: #F0F0F0; }
[data-theme="dark"] .schedule-card-detail { color: #909090; }

/* 모달 */
[data-theme="dark"] .modal-overlay { background: rgba(0,0,0,0.8); }
[data-theme="dark"] .modal { background: #111111; }
[data-theme="dark"] .modal h3 { color: #F0F0F0; }
[data-theme="dark"] .form-group label { color: #D0D0D0; }
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea { background: #1A1A1A; border-color: #3A3A3A; color: #F0F0F0; }
[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus { border-color: #60A5FA; background: #1A1A1A; }
[data-theme="dark"] .file-input-area { background: #1A1A1A; border-color: #3A3A3A; color: #909090; }
[data-theme="dark"] .file-input-area:hover { border-color: #60A5FA; }
[data-theme="dark"] .member-list { border-color: #2A2A2A; background: #1A1A1A; }
[data-theme="dark"] .member-item { color: #F0F0F0; }
[data-theme="dark"] .member-item:hover { background: #222222; }
[data-theme="dark"] .modal-actions { border-color: #2A2A2A; }

/* 알림 드롭다운 */
[data-theme="dark"] .notif-dropdown { background: #111111; border-color: #2A2A2A; }
[data-theme="dark"] .notif-header { color: #F0F0F0; border-color: #2A2A2A; background: #111111; }
[data-theme="dark"] .notif-item { border-color: #2A2A2A; color: #F0F0F0; }
[data-theme="dark"] .notif-item:hover { background: #1A1A1A; }
[data-theme="dark"] .notif-empty { color: #909090; }

/* 옵션 메뉴 */
[data-theme="dark"] .routine-delete-menu { background: #111111; border-color: #2A2A2A; box-shadow: 0 4px 16px rgba(0,0,0,0.5); }

/* 스켈레톤 */
[data-theme="dark"] .skeleton { background: linear-gradient(90deg, #1A1A1A 25%, #272727 50%, #1A1A1A 75%); background-size: 800px 100%; }

/* D-Day 배너 */
[data-theme="dark"] .dday-banner { background: #0D1520; border-color: #1D3A5F; }
[data-theme="dark"] .dday-item { background: #111111; border-color: #2A2A2A; color: #60A5FA; }
[data-theme="dark"] .dday-item.today { background: #1D4ED8; color: white; }

/* 미니 캘린더 */
[data-theme="dark"] .mini-cal { background: #1A1A1A; border-color: #2A2A2A; }
[data-theme="dark"] .mini-cal-day { color: #F0F0F0; }
[data-theme="dark"] .mini-cal-day:hover { background: #222222; }
[data-theme="dark"] .mini-cal-day.selected { background: #0D1F3C; color: #60A5FA; }
[data-theme="dark"] .mini-cal-header { color: #909090; }

/* 에러 메시지 */
[data-theme="dark"] .error-msg { color: #F87171; }

body { font-family: 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif; background: var(--bg); color: var(--text); }

/* 로그인 */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.auth-card { background: var(--card); border-radius: 16px; padding: 40px; width: 400px; box-shadow: 0 4px 24px rgba(0,0,0,0.1); }
.auth-card h1 { font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; }
.auth-card .subtitle { color: var(--text-muted); margin-bottom: 28px; font-size: 0.9rem; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 5px; }
.form-group input, .form-group select {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.95rem; outline: none; transition: border 0.2s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--primary); }
.btn { width: 100%; padding: 12px; border: none; border-radius: 8px; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: background 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; width: auto; }
.auth-toggle { text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--text-muted); }
.auth-toggle a { color: var(--primary); cursor: pointer; font-weight: 600; }
.error-msg { color: var(--danger); font-size: 0.85rem; margin-top: 8px; display: none; }
.error-msg.show { display: block; }

/* 헤더 */
.app-header { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 24px; height: 60px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 100; }
.app-header h1 { font-size: 1.05rem; font-weight: 700; }
.header-right { display: flex; align-items: center; gap: 16px; }
.user-info { font-size: 0.85rem; color: var(--text-muted); }
.notification-btn { position: relative; background: none; border: none; cursor: pointer; font-size: 1.2rem; padding: 4px; }
.notif-badge { position: absolute; top: -2px; right: -2px; background: var(--danger); color: white; border-radius: 50%; width: 16px; height: 16px; font-size: 0.65rem; display: none; align-items: center; justify-content: center; }
.notif-badge.show { display: flex; }

/* 반 탭 */
.class-tabs { display: flex; gap: 4px; padding: 12px 24px 0; background: var(--card); border-bottom: 1px solid var(--border); }
.tab { padding: 9px 18px; border-radius: 8px 8px 0 0; cursor: pointer; font-size: 0.9rem; font-weight: 600; color: var(--text-muted); border: 1px solid transparent; border-bottom: none; }
.tab.active { background: var(--bg); color: var(--primary); border-color: var(--border); }
.tab.my-class::after { content: ' ★'; font-size: 0.75rem; }

/* 캘린더 레이아웃 */
.main-content { display: flex; gap: 24px; padding: 24px; max-width: 1200px; margin: 0 auto; }
.calendar-section { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.cal-nav-area { }
.cal-grid-area { flex: 1; }
.calendar-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.calendar-nav h2 { font-size: 1.15rem; font-weight: 700; }
.nav-btn { background: none; border: 1px solid var(--border); border-radius: 8px; padding: 6px 14px; cursor: pointer; font-size: 0.9rem; }
.nav-btn:hover { background: var(--bg); }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--border); border-radius: 12px; overflow: hidden; }
.calendar-day-header { background: var(--card); padding: 8px; text-align: center; font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
.calendar-day { background: var(--card); min-height: 76px; padding: 8px; cursor: pointer; transition: background 0.15s; }
.calendar-day:hover { background: #EFF6FF; }
.calendar-day.today .day-num { background: var(--primary); color: white; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; }
.calendar-day.selected { background: #DBEAFE; }
.calendar-day.other-month { opacity: 0.35; pointer-events: none; }
.day-num { font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }
.day-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); display: inline-block; margin: 1px; }
.day-dot.personal { background: var(--success); }
.day-dot.group { background: #F59E0B; }
.day-dot.routine { background: #7C3AED; }

/* 날짜 상세 패널 */
.detail-panel { width: 340px; flex-shrink: 0; }
.detail-card { background: var(--card); border-radius: 12px; padding: 20px; box-shadow: var(--shadow); position: sticky; top: 80px; }
.detail-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }

/* 시간표 */
.timetable-list { list-style: none; margin-bottom: 12px; }
.timetable-slot { padding: 9px 12px; border-radius: 8px; margin-bottom: 5px; border: 1px solid var(--border); transition: all 0.15s; }
.timetable-slot.clickable { cursor: pointer; }
.timetable-slot.clickable:hover { background: #EFF6FF; border-color: var(--primary); }
.slot-label { font-size: 0.75rem; color: var(--text-muted); }
.slot-subject { font-size: 0.9rem; font-weight: 600; display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.slot-badge { display: inline-block; padding: 2px 7px; border-radius: 999px; font-size: 0.7rem; font-weight: 600; }
.badge-class { background: #DBEAFE; color: #1D4ED8; }
.badge-personal { background: #F0FDF4; color: #166534; }
.badge-group { background: #FEF3C7; color: #92400E; }
.submission-section { margin-top: 10px; padding: 11px 12px; background: #FFF7ED; border-radius: 8px; border: 1px solid #FED7AA; cursor: pointer; transition: background 0.15s; }
.submission-section:hover { background: #FFEDD5; }
.submission-section h4 { font-size: 0.85rem; font-weight: 600; color: #92400E; }

/* 일정 카드 */
.schedule-card { padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 7px; font-size: 0.85rem; }
.schedule-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.schedule-card-title { font-weight: 600; }
.schedule-card-detail { color: var(--text-muted); font-size: 0.8rem; white-space: pre-wrap; }
.schedule-card-file { color: var(--primary); font-size: 0.78rem; display: block; margin-top: 4px; }
.btn-delete { padding: 3px 9px; background: var(--danger); color: white; border: none; border-radius: 5px; cursor: pointer; font-size: 0.73rem; margin-top: 6px; }

/* 모달 */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.45); display: none; align-items: center; justify-content: center; z-index: 1000; }
.modal-overlay.open { display: flex; }
.modal { background: var(--card); border-radius: 16px; padding: 28px; width: 440px; max-width: 95vw; max-height: 90vh; overflow-y: auto; }
.modal h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 18px; }
.type-selector { display: flex; gap: 7px; margin-bottom: 14px; }
.type-btn { flex: 1; padding: 8px; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; font-size: 0.82rem; font-weight: 600; text-align: center; background: var(--bg); transition: all 0.15s; }
.type-btn.active { border-color: var(--primary); background: #EFF6FF; color: var(--primary); }
.member-list { max-height: 150px; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; padding: 6px; margin-bottom: 12px; }
.member-item { display: flex; align-items: center; gap: 8px; padding: 6px 8px; cursor: pointer; border-radius: 6px; font-size: 0.88rem; }
.member-item:hover { background: var(--bg); }
.form-group textarea { width: 100%; padding: 10px; border: 1px solid var(--border); border-radius: 8px; resize: none; font-size: 0.9rem; outline: none; font-family: inherit; }
.form-group textarea:focus { border-color: var(--primary); }
.file-input-area { border: 2px dashed var(--border); border-radius: 8px; padding: 14px; text-align: center; cursor: pointer; font-size: 0.83rem; color: var(--text-muted); transition: border 0.15s; }
.file-input-area:hover { border-color: var(--primary); }
.file-list { margin-top: 6px; font-size: 0.78rem; color: var(--text-muted); }
.modal-actions { display: flex; gap: 8px; margin-top: 18px; }

/* 알림 드롭다운 */
.notif-dropdown { position: fixed; top: 52px; right: 8px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; width: 310px; max-width: calc(100vw - 16px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); z-index: 200; display: none; max-height: 80vh; overflow-y: auto; }
.notif-dropdown.open { display: block; }
.notif-header { padding: 12px 16px; font-weight: 600; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.notif-item { padding: 12px 16px; border-bottom: 1px solid var(--border); }
.notif-item:last-child { border-bottom: none; }
.notif-text { font-size: 0.83rem; margin-bottom: 8px; line-height: 1.4; word-break: keep-all; }
.notif-actions { display: flex; gap: 7px; flex-wrap: wrap; }
.btn-accept { background: var(--success); color: white; padding: 6px 16px; border: none; border-radius: 6px; cursor: pointer; font-size: 0.82rem; font-weight: 600; flex: 1; }
.btn-reject { background: var(--danger); color: white; padding: 6px 16px; border: none; border-radius: 6px; cursor: pointer; font-size: 0.82rem; font-weight: 600; flex: 1; }
.notif-empty { padding: 20px; text-align: center; color: var(--text-muted); font-size: 0.85rem; }

/* 섹션 제목 */
.section-title { font-size: 0.88rem; font-weight: 700; margin: 14px 0 8px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* 미니 캘린더 */
.mini-cal { border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-top:6px; }
.mini-cal-nav { display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg);border-bottom:1px solid var(--border); }
.mini-cal-nav button { background:none;border:none;cursor:pointer;font-size:0.85rem;padding:2px 8px;border-radius:6px; }
.mini-cal-nav button:hover { background:var(--border); }
.mini-cal-nav span { font-size:0.88rem;font-weight:700; }
.mini-cal-grid { display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--border); }
.mini-cal-header { background:var(--bg);text-align:center;padding:5px 0;font-size:0.72rem;font-weight:600;color:var(--text-muted); }
.mini-cal-day { background:white;text-align:center;padding:6px 0;font-size:0.8rem;cursor:pointer;transition:background 0.12s; }
.mini-cal-day:hover { background:#EFF6FF; }
.mini-cal-day.selected { background:#7C3AED;color:white;font-weight:700; }
.mini-cal-day.other-month { color:var(--border);pointer-events:none; }
.routine-slot { border-left:3px solid #7C3AED !important; }
.slot-past { opacity: 0.38 !important; }
.slot-past .slot-subject { color: var(--text-muted); }
.slot-current { background: #EFF6FF !important; border-color: var(--primary) !important; border-left: 3px solid var(--primary) !important; }
.slot-current .slot-label { color: var(--primary); font-weight: 700; }
.slot-current .slot-subject { color: var(--text); font-weight: 700; }
.routine-delete-menu { position:absolute;right:0;top:28px;background:white;border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.12);z-index:50;overflow:hidden;min-width:130px; }
.rdm-btn { display:block;width:100%;padding:9px 14px;border:none;background:none;cursor:pointer;font-size:0.83rem;text-align:left;transition:background 0.15s; }
.rdm-btn:hover { background:var(--bg); }
.rdm-danger { color:var(--danger); }

/* 반응형 */
@media (max-width: 768px) {
  /* 헤더: 2줄 레이아웃 */
  .app-header {
    height: auto;
    padding: 8px 14px;
    flex-wrap: wrap;
    row-gap: 6px;
  }
  .app-header h1 {
    flex: 0 0 100%; /* 1줄 전체 차지 */
    font-size: 0.88rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 6px;
  }
  .header-right {
    width: 100%;
    gap: 8px;
    flex-wrap: wrap;
  }
  .user-info { flex: 1; font-size: 0.78rem; }
  .notification-btn { padding: 2px; }
  #logout-btn { font-size: 0.78rem; padding: 4px 10px; }

  /* 본문 */
  .main-content { flex-direction: column; padding: 12px; gap: 16px; }
  /* display:contents로 calendar-section 투명화 → 자식들이 main-content flex에 직접 참여 */
  .calendar-section { display: contents; }
  /* 항상 고정 순서: nav(1) → D-Day배너(1) → 시간표(2) → 캘린더 그리드(3) */
  .cal-nav-area       { order: 1; width: 100%; }
  #dday-banner        { order: 1; width: 100%; }
  .detail-panel       { order: 2; width: 100%; }
  .cal-grid-area      { order: 3; width: 100%; }
  .detail-card { position: static; }
  .calendar-nav { gap: 6px; }
  .calendar-nav h2 { font-size: 1rem; }
  .view-toggle .view-btn { padding: 4px 8px; font-size: 0.75rem; }
  .today-btn { font-size: 0.72rem; padding: 3px 7px; }
  .class-tabs { gap: 2px; padding: 8px 12px 0; overflow-x: auto; }
  .tab { padding: 7px 12px; font-size: 0.82rem; white-space: nowrap; }
  .week-view-grid { grid-template-columns: repeat(7, 1fr); gap: 3px; }
  .week-day-header { padding: 5px 2px 4px; }
  .week-day-name { font-size: 0.62rem; }
  .week-day-num { font-size: 0.8rem; }
  .week-event { font-size: 0.6rem; padding: 1px 3px; }
}

/* NEIS dot */
.day-dot.neis { background: #F59E0B; }

/* 급식 버튼 */
.btn-meal {
  background: #FEF3C7;
  color: #D97706;
  border: 1px solid #FCD34D;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.72rem;
  cursor: pointer;
  margin-left: 8px;
  font-weight: 600;
  transition: background 0.15s;
}
.btn-meal:hover { background: #FDE68A; }

/* 오늘 버튼 */
.today-btn {
  font-size: 0.78rem;
  padding: 4px 10px;
  color: var(--primary);
  border-color: var(--primary);
  font-weight: 600;
}
.today-btn:hover { background: #EFF6FF; }

/* 토스트 알림 */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: #1E293B;
  color: white;
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  display: flex;
  align-items: center;
  min-width: 220px;
  max-width: 340px;
  animation: toastIn 0.25s ease-out;
}
.toast.success { border-left: 4px solid var(--success); }
.toast.error   { border-left: 4px solid var(--danger); }
.toast.info    { border-left: 4px solid var(--primary); }
.toast.toast-out { animation: toastOut 0.2s ease-in forwards; }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(24px); }
}

/* 모달 애니메이션 */
.modal-overlay { animation: overlayIn 0.2s ease-out; }
.modal { animation: modalIn 0.22s ease-out; }
@keyframes overlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* 로딩 스켈레톤 */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.skeleton {
  background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
  background-size: 800px 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
}
.skeleton-line { height: 14px; margin-bottom: 8px; }
.skeleton-line.short  { width: 60%; }
.skeleton-line.medium { width: 80%; }
.skeleton-line.full   { width: 100%; }

/* 빈 상태 디자인 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  gap: 14px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* 비밀번호 강도계 */
.pw-strength-bar {
  height: 4px;
  border-radius: 2px;
  margin-top: 6px;
  transition: width 0.3s, background 0.3s;
  width: 0%;
}
.pw-strength-label {
  font-size: 0.75rem;
  margin-top: 4px;
  font-weight: 600;
}
.strength-weak   { background: var(--danger); }
.strength-medium { background: #F59E0B; }
.strength-strong { background: var(--success); }

/* 키보드 포커스 (접근성) */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.calendar-day:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
  border-radius: 4px;
}

/* D-Day 배너 */
.dday-banner {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border: 1px solid #93C5FD;
  border-radius: 10px;
  padding: 10px 16px;
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.dday-item {
  background: white;
  border: 1px solid #BFDBFE;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #1D4ED8;
  white-space: nowrap;
}
.dday-item.today { background: #3B82F6; color: white; border-color: #3B82F6; }
.day-dot.dday { background: #3B82F6; border: 2px solid #1D4ED8; width: 8px; height: 8px; }

/* Undo 버튼 */
.toast-undo-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.4);
  color: white;
  border-radius: 5px;
  padding: 2px 8px;
  font-size: 0.8rem;
  cursor: pointer;
  margin-left: auto;
  white-space: nowrap;
  flex-shrink: 0;
}
.toast-undo-btn:hover { background: rgba(255,255,255,0.15); }

/* 뷰 토글 */
.view-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.view-btn {
  padding: 5px 12px;
  border: none;
  background: var(--card);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  border-right: 1px solid var(--border);
}
.view-btn:last-child { border-right: none; }
.view-btn.active { background: var(--primary); color: white; }
.view-btn:hover:not(.active) { background: var(--bg); color: var(--text); }
[data-theme="dark"] .view-toggle { border-color: #2A2A2A; }
[data-theme="dark"] .view-btn { background: #1A1A1A; color: #909090; border-color: #2A2A2A; }
[data-theme="dark"] .view-btn.active { background: #2563EB; color: white; }
[data-theme="dark"] .view-btn:hover:not(.active) { background: #222222; color: #F0F0F0; }

/* 주간 뷰 */
.week-view-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  background: transparent !important;
  border-radius: 0;
  overflow: visible;
}
.week-day-col {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  min-height: 120px;
}
.week-day-col:hover { border-color: var(--primary); box-shadow: 0 2px 8px rgba(59,130,246,0.1); }
.week-day-col.today .week-day-num { background: var(--primary); color: white; border-radius: 50%; width: 26px; height: 26px; display: flex; align-items: center; justify-content: center; }
.week-day-col.selected { border-color: var(--primary); background: #EFF6FF; }
[data-theme="dark"] .week-day-col.selected { background: #0D1F3C; border-color: #3B82F6; }
.week-day-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 4px 6px;
  border-bottom: 1px solid var(--border);
  gap: 2px;
}
.week-day-name { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; }
.week-day-num { font-size: 0.9rem; font-weight: 700; color: var(--text); }
.week-day-body { padding: 6px 4px; display: flex; flex-direction: column; gap: 3px; }
.week-event {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 5px;
  border-radius: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.week-event-class    { background: #DBEAFE; color: #1D4ED8; }
.week-event-personal { background: #F0FDF4; color: #166534; }
.week-event-group    { background: #FEF3C7; color: #92400E; }
.week-event-neis     { background: #FFFBEB; color: #D97706; }
.week-event-dday     { background: #EFF6FF; color: #1D4ED8; border: 1px solid #93C5FD; }
[data-theme="dark"] .week-event-class    { background: #0D1F3C; color: #93C5FD; }
[data-theme="dark"] .week-event-personal { background: #052E16; color: #86EFAC; }
[data-theme="dark"] .week-event-group    { background: #1C1400; color: #FCD34D; }
[data-theme="dark"] .week-event-neis     { background: #1C1400; color: #FCD34D; }
[data-theme="dark"] .week-event-dday     { background: #0D1F3C; color: #60A5FA; }
.week-day-empty { font-size: 0.68rem; color: var(--text-muted); text-align: center; padding: 8px 0; }

/* 시험 D-Day 팝업 알림 */
.exam-notif {
  position: fixed;
  top: 72px;
  right: 16px;
  width: 270px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.16);
  z-index: 9998;
  animation: examNotifIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  touch-action: pan-x;
  user-select: none;
}
.exam-notif-main {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 36px 14px 14px;
}
.exam-notif-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 50%;
  line-height: 1;
  transition: background 0.15s;
}
.exam-notif-close:hover { background: var(--border); }
.exam-notif-icon { font-size: 2rem; flex-shrink: 0; line-height: 1; }
.exam-notif-content { flex: 1; min-width: 0; }
.exam-notif-label { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); margin-bottom: 2px; }
.exam-notif-dday { font-size: 1.5rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
.exam-notif-date { font-size: 0.76rem; color: var(--text-muted); margin-top: 3px; }
.exam-notif-hide-btn { display: block; width: 100%; padding: 8px 0; background: none; border: none; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.75rem; cursor: pointer; text-align: center; }
.exam-notif-hide-btn:hover { background: rgba(0,0,0,0.04); color: var(--text); }
.exam-notif-out {
  animation: examNotifOut 0.25s ease-in forwards;
}
@keyframes examNotifIn {
  from { opacity: 0; transform: translateX(110%) scale(0.9); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes examNotifOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-70px); }
}