:root {
  --bg: #0f0f1a;
  --card-bg: #1a1a2e;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #2d2d44;
  --header-bg: #252540;
  --hover-bg: #252540;
  --input-bg: #1e1e30;
  --input-border: #3d3d5c;
  --tag-bg: #1e1e3a;
  --tag-text: #818cf8;
  --tag-attendee-bg: #1a2a3a;
  --tag-attendee-text: #38bdf8;
  --btn-outline-bg: transparent;
  --btn-outline-border: #3d3d5c;
  --btn-outline-text: #e2e8f0;
  --btn-outline-hover: #252540;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --seq-color: #818cf8;
  --modal-overlay: rgba(0,0,0,.6);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --login-error: #f87171;
  --picker-filter: invert(0.85);
}

.light-mode {
  --bg: #f0f2f5;
  --card-bg: #fff;
  --text: #333;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --header-bg: #f8fafc;
  --hover-bg: #f8fafc;
  --input-bg: #fff;
  --input-border: #d1d5db;
  --tag-bg: #eef2ff;
  --tag-text: #4f46e5;
  --tag-attendee-bg: #f0f9ff;
  --tag-attendee-text: #0369a1;
  --btn-outline-bg: #fff;
  --btn-outline-border: #d1d5db;
  --btn-outline-text: #374151;
  --btn-outline-hover: #f3f4f6;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --seq-color: #4f46e5;
  --modal-overlay: rgba(0,0,0,.4);
  --login-error: #ef4444;
  --picker-filter: invert(0);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background .3s, color .3s;
}

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

header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 12px;
}

.header-row-bottom {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  width: 100%;
}

header h1 { font-size: 24px; color: var(--text); }

.header-actions { display: flex; gap: 8px; align-items: center; }

.user-info {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 4px 12px;
  background: var(--hover-bg);
  border-radius: 16px;
}

.theme-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 16px;
  color: var(--text);
  transition: all .2s;
}
.theme-btn:hover { background: var(--hover-bg); }

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: all .2s;
  white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }

#btnToday.active, #btnTomorrow.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.btn-outline {
  background: var(--btn-outline-bg);
  border: 1px solid var(--btn-outline-border);
  color: var(--btn-outline-text);
}
.btn-outline:hover { background: var(--btn-outline-hover); }

.btn-small { padding: 5px 12px; font-size: 13px; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }

.btn-sm { padding: 4px 8px; font-size: 12px; }

.week-navigation {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 15px;
  color: var(--text-secondary);
}

.week-navigation span { font-weight: 600; min-width: 200px; text-align: center; color: var(--text); }
.nav-day-group { display: inline-flex; gap: 4px; }
.week-navigation .btn:not(.btn-outline) { color: var(--btn-outline-text); background: var(--hover-bg); border: 1px solid var(--border); }

.table-wrapper {
  background: var(--card-bg);
  border-radius: 10px;
  overflow-x: auto;
  box-shadow: var(--shadow);
  transition: background .3s;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

thead th {
  background: var(--header-bg);
  padding: 12px 14px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid #44446a;
  font-size: 14px;
  vertical-align: middle;
}

tbody tr:hover { background: var(--hover-bg); }

.col-seq { width: 50px; text-align: center; }
.col-date { width: 70px; white-space: nowrap; }
.col-time { width: 100px; white-space: nowrap; }
.col-content { width: 370px; word-break: break-word; }
.col-location { width: 115px; word-break: break-word; }
.col-attendees { min-width: 140px; word-break: break-word; }
.col-actions { width: 70px; text-align: center; }

td.col-seq { text-align: center; font-weight: 600; color: var(--seq-color); }

.date-main { font-weight: 600; }
.date-weekday { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.time-range { font-size: 13px; color: var(--text-secondary); font-weight: 500; }

.location-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
}

.attendee-tag {
  display: inline-block;
  padding: 2px 10px;
  background: var(--tag-attendee-bg);
  color: var(--tag-attendee-text);
  border-radius: 12px;
  font-size: 12px;
  margin: 2px 3px;
}

.action-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s;
}
.action-btn:hover { color: var(--tag-text); }
.action-btn.delete:hover { color: var(--danger); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  display: none;
}

.login-error {
  color: var(--login-error);
  font-size: 13px;
  min-height: 20px;
  text-align: center;
  margin-top: 8px;
}

.export-bar {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}

/* ---- Filter Bar ---- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: var(--shadow);
  align-items: flex-end;
}

.filter-item label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.filter-item input[type="text"] {
  width: 350px;
  padding: 6px 10px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}
.filter-item input:focus { border-color: var(--primary); }

.filter-item-wide { flex: 1; min-width: 200px; }

.filter-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.filter-btn {
  padding: 5px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13px;
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--tag-text); color: var(--tag-text); }
.filter-btn.active {
  background: var(--tag-bg);
  border-color: var(--tag-text);
  color: var(--tag-text);
  font-weight: 600;
}

.filter-date-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.filter-date-group input[type="date"] {
  width: 130px;
  padding: 5px 8px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}
.filter-date-group input[type="date"]:focus { border-color: var(--primary); }
.date-sep { color: var(--text-muted); font-size: 13px; }

/* Multi-select dropdown */
.multi-select {
  position: relative;
  min-width: 140px;
}
.multi-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  user-select: none;
  min-height: 32px;
}
.multi-select-trigger:hover { border-color: var(--primary); }
.multi-select-arrow { font-size: 10px; color: var(--text-muted); }
.multi-select-dropdown {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  z-index: 100;
  margin-bottom: 2px;
  padding: 4px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  max-height: 220px;
  overflow-y: auto;
}
.multi-select-dropdown.open { display: block; }
.multi-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
}
.multi-option:hover { background: var(--hover-bg); }
.multi-option input[type="checkbox"] { accent-color: var(--primary); }

/* ---- Toggle Switch ---- */
.form-group .toggle-row {
  display: flex !important;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  margin-bottom: 0;
}
.toggle-row input[type="checkbox"] {
  display: none;
}
.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--text-muted);
  border-radius: 12px;
  position: relative;
  transition: background .2s;
  flex-shrink: 0;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.25);
}
.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.3);
}
.toggle-row input:checked + .toggle-slider {
  background: #2e7d32;
}
.toggle-row input:checked + .toggle-slider::after {
  transform: translateX(20px);
}
.toggle-label-text {
  font-size: 14px;
  color: var(--text);
  user-select: none;
}

/* ---- Modal ---- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  z-index: 1000;
  justify-content: center;
  align-items: flex-start;
  padding-top: 60px;
}
.modal-overlay.active { display: flex; }



.modal {
  background: var(--card-bg);
  border-radius: 12px;
  width: 640px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  transition: background .3s;
}
.modal-sm { width: 520px; }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 18px; color: var(--text); }

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0 4px;
}
.modal-close:hover { color: var(--text); }

.modal-body { padding: 20px 24px; }
.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  touch-action: manipulation;
  background: var(--input-bg);
  color: var(--text);
  transition: border-color .2s, background .3s, color .3s;
}
input:focus, textarea:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.15); }

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  filter: var(--picker-filter);
  cursor: pointer;
}

textarea { resize: vertical; }

.location-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.location-btn {
  padding: 6px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  transition: all .2s;
  color: var(--text-secondary);
}
.location-btn:hover { border-color: var(--tag-text); color: var(--tag-text); }
.location-btn.active {
  border-color: var(--tag-text);
  background: var(--tag-bg);
  color: var(--tag-text);
  font-weight: 600;
}
.location-input { flex: 1; min-width: 150px; }
.venue-select-area {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  background: var(--hover-bg);
}
.venue-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  min-height: 28px;
}
.venue-input-row {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}
.venue-input-row input { flex: 1; }
.venue-button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.attendee-select-area {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  background: var(--hover-bg);
}

.attendee-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  min-height: 28px;
}
.attendee-tag-select {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 14px;
  font-size: 13px;
}
.move-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 2px;
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1;
}
.move-btn:hover { color: var(--text); }
.move-btn:disabled { opacity: .3; cursor: default; }

.attendee-tag-select .remove {
  cursor: pointer;
  font-weight: bold;
  margin-left: 2px;
  color: var(--text-muted);
}
.attendee-tag-select .remove:hover { color: var(--danger); }
.attendee-tag-select.orphan {
  background: #3a1a1a;
  color: #f87171;
  border: 1px dashed #f87171;
}
.light-mode .attendee-tag-select.orphan {
  background: #fef2f2;
  color: #dc2626;
  border: 1px dashed #dc2626;
}

.attendee-input-row { display: flex; gap: 8px; }
.attendee-input-row input { flex: 1; }
.attendee-button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

/* Attendee / User Manager */
.attendee-manager .input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.attendee-manager .input-row input { flex: 1; }

.attendee-list {
  list-style: none;
  max-height: 300px;
  overflow-y: auto;
}
.attendee-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text);
}
.attendee-list li:last-child { border-bottom: none; }
.attendee-list li:hover { background: var(--hover-bg); }

.user-role-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}
.user-role-badge.admin { background: #3a1a1a; color: #f87171; }
.user-role-badge.editor { background: var(--tag-bg); color: var(--tag-text); }
.light-mode .user-role-badge.admin { background: #fef2f2; color: #dc2626; }
.light-mode .user-role-badge.editor { background: #eef2ff; color: #4f46e5; }

#attendeeList li, #venueList li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}
#attendeeList .attendee-name { flex: 1; }
#attendeeList .attendee-arrows { white-space: nowrap; }

#venueList li { display: flex; justify-content: space-between; align-items: center; }
#venueList li span:first-child { flex: 1; }
#venueList li span:last-child { white-space: nowrap; display: flex; align-items: center; gap: 4px; }

/* ---- Site Footer ---- */
.site-footer {
  margin-top: 24px;
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.btn-edit-footer {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 4px;
}
.btn-edit-footer:hover { background: var(--hover-bg); color: var(--text); }
#footerInput { width: 400px; max-width: 80vw; }
.btn-edit-title {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 18px;
  padding: 2px 8px;
  border-radius: 4px;
  vertical-align: middle;
}
.btn-edit-title:hover { background: var(--hover-bg); color: var(--text); }
#titleInput { font-size: 20px; padding: 4px 8px; width: 300px; max-width: 80vw; }
#btnSaveTitle, #btnCancelTitle { vertical-align: middle; }

/* ---- Meeting Cards (Mobile) ---- */
#meetingCards { display: none; }

.meeting-card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.meeting-card:last-child { margin-bottom: 0; }

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}
.card-seq {
  font-weight: 700;
  color: var(--seq-color);
  min-width: 32px;
}
.card-date { color: var(--text); font-weight: 600; }
.card-time {
  margin-left: auto;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
}

.card-content {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.card-loc { min-width: 0; }
.card-attendees { min-width: 0; }
.card-attendees .attendee-tag { font-size: 12px; padding: 2px 8px; }

.card-actions {
  display: flex;
  gap: 12px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.card-actions .action-btn {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--btn-outline-bg);
  color: var(--btn-outline-text);
}
.card-actions .action-btn:hover { background: var(--hover-bg); }
.card-actions .action-btn.delete:hover { border-color: var(--danger); color: var(--danger); }

/* ---- Mobile Responsive ---- */
@media (max-width: 768px) {
  html, body { overflow-x: hidden; }
  .container { padding: 12px; }

  header { align-items: stretch; gap: 8px; }
  .header-row { flex-direction: column; align-items: center; gap: 6px; }
  .header-row-bottom { justify-content: center; gap: 4px; }
  header h1 { font-size: 18px; max-width: 100%; word-break: break-word; }
  .header-actions .btn { font-size: 13px; padding: 6px 10px; }
  .header-row-bottom .btn { font-size: 13px; padding: 5px 10px; }

  .week-navigation { flex-wrap: wrap; justify-content: center; font-size: 13px; }
  .week-navigation span { min-width: 0; font-size: 13px; }
  .nav-day-group { flex-basis: 100%; justify-content: center; margin-top: 4px; display: inline-flex; gap: 4px; }

  .filter-bar { flex-direction: column; padding: 12px; gap: 10px; }
  .filter-item { width: 100%; }
  .filter-item input { width: 100%; }
  .filter-item-wide { min-width: 0; width: 100%; }
  .filter-date-group { width: 100%; }
  .filter-date-group input[type="date"] { width: 100%; flex: 1; }
  .filter-btn-group { width: 100%; justify-content: center; }
  .multi-select { min-width: 0; width: 100%; }

  .table-wrapper table, .table-wrapper thead, .table-wrapper tbody, .table-wrapper tr, .table-wrapper th, .table-wrapper td {
    display: none;
  }
  #meetingCards { display: block; }
  .meeting-card, .card-content, .card-header { word-break: break-word; overflow-wrap: break-word; }

  .export-bar { justify-content: center; flex-wrap: wrap; gap: 6px; }
  .export-bar .btn { font-size: 13px; padding: 6px 12px; }

  .modal-overlay { padding: 0 8px 8px; align-items: flex-end; }
  .modal-overlay.active { align-items: flex-end; }
  .modal, .modal-sm { width: 100%; border-radius: 12px; max-height: 85vh; }
  .modal-header { padding: 12px 16px; }
  .modal-header h2 { font-size: 16px; }
  .modal-body { padding: 12px 16px; }
  .modal-footer { padding: 12px 16px; }
  .form-row { flex-direction: column; gap: 8px; }
  .form-group { margin-bottom: 12px; }
  .form-group label { font-size: 13px; }
  input[type="text"],
  input[type="password"],
  input[type="number"],
  input[type="date"],
  input[type="time"],
  textarea,
  select { padding: 8px 12px; font-size: 16px; min-width: 0; }

  .attendee-list li { font-size: 14px; padding: 8px 10px; }
  .attendee-input-row { flex-direction: column; }
  .location-btn { padding: 6px 12px; font-size: 13px; }
  .attendee-tag-select { padding: 4px 10px; font-size: 13px; }
  .attendee-select-area { padding: 10px; }
  .attendee-button-group { gap: 6px; margin-top: 8px; padding-top: 8px; }
  .btn { padding: 8px 14px; font-size: 14px; }

  .multi-select-dropdown { position: fixed; top: auto; bottom: 0; left: 0; right: 0; max-height: 50vh; border-radius: 12px 12px 0 0; box-shadow: 0 -4px 24px rgba(0,0,0,.4); }
  #attendeeFilterList { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; padding: 4px; }
  #attendeeFilterList .multi-option { padding: 6px 4px; gap: 4px; }
}