:root {
  /* --- Color Tokens --- */
  --primary: #006A6A;
  --on-primary: #FFFFFF;
  --primary-hover: #004D4D;
  --primary-container: #CCE8E8;
  --primary-container-hover: #B8DCDC;
  --on-primary-container: #051F1F;
  --bg: #F4F7F7;
  --surf: #FFFFFF;
  --on-surf: #191C1C;
  --on-surf-variant: #4A5555;
  --surf-container: #F0F3F3;
  --surf-container-high: #E6EBEB;
  --outline: #E0E5E5;
  --outline-variant: #C4C9C9;
  --error: #B3261E;
  --on-error: #FFFFFF;
  --error-container: #F9DEDC;
  --success: #2E7D32;

  /* --- Spacing (4px grid) --- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;

  /* --- Border Radius --- */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* --- Layout --- */
  --header-height: 64px;
}

* { box-sizing: border-box; }

[data-action] { cursor: pointer; }

body {
  font-family: "Roboto", sans-serif;
  background-color: var(--bg);
  margin: 0;
  color: var(--on-surf);
  -webkit-tap-highlight-color: transparent;
}

/* --- Header --- */
.top-app-bar {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
  background-color: var(--surf); display: flex; align-items: center;
  justify-content: space-between; padding: 0 var(--space-4); z-index: 1000;
  transition: background-color 0.3s, box-shadow 0.3s;
}
.top-app-bar.scrolled {
  background-color: var(--surf-container); box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.header-title { font-size: 1.35rem; font-weight: 500; display: flex; align-items: center; gap: var(--space-3); color: var(--primary); margin: 0; }
.header-title .material-symbols-rounded { font-size: 26px; }
.header-actions { display: flex; align-items: center; gap: var(--space-1); }

.sync-chip { display: flex; align-items: center; gap: 6px; padding: 6px var(--space-3); border-radius: var(--radius-sm); color: var(--on-surf-variant); font-size: 0.85rem; font-weight: 500; margin-right: var(--space-2); }
.sync-chip .material-symbols-rounded { font-size: 18px; }
.app-icon-btn { background: transparent; border: none; width: var(--space-8); height: var(--space-8); border-radius: var(--radius-full); cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--on-surf-variant); flex-shrink: 0; transition: background 0.2s; text-decoration: none; }
.app-icon-btn:hover { background-color: var(--surf-container); color: var(--on-surf); }

.desktop-only { display: flex; }
.mobile-only { display: none; }

.overflow-menu-panel { position: absolute; top: calc(var(--header-height) - var(--space-2)); right: var(--space-4); background-color: var(--surf); border-radius: var(--radius-md); box-shadow: 0 4px 12px rgba(0,0,0,0.15); display: none; min-width: 180px; padding: var(--space-2) 0; z-index: 1001; }
.overflow-menu-panel.open { display: block; }
.overflow-item { width: 100%; text-align: left; padding: var(--space-3) var(--space-4); font-size: 0.95rem; background: transparent; border: none; cursor: pointer; display: flex; align-items: center; font-family: inherit; color: var(--on-surf); }
.overflow-item .material-symbols-rounded { font-size: 20px; margin-right: var(--space-3); }
.overflow-item:hover { background-color: var(--surf-container); }
.overflow-version { padding: var(--space-2) var(--space-4); font-size: 0.75rem; color: var(--on-surf-variant); text-align: center; border-top: 1px solid var(--outline-variant); margin-top: var(--space-1); }

.linear-progress { position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background-color: var(--primary-container); overflow: hidden; display: none; }
.linear-progress.active { display: block; }
.linear-progress::before { content: ''; position: absolute; background-color: var(--primary); width: 50%; height: 100%; animation: progress-slide 1.5s infinite ease-in-out; }
@keyframes progress-slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(300%); } }

/* --- Custom Dropdown --- */
.custom-dropdown-container { position: relative; display: inline-block; margin-left: calc(-1 * var(--space-3)); }
.custom-dropdown-trigger { display: flex; align-items: center; gap: 6px; background: transparent; border: none; padding: 6px var(--space-3); border-radius: var(--radius-full); font-family: inherit; font-size: 0.85rem; font-weight: 500; color: var(--on-surf-variant); cursor: pointer; transition: background-color 0.2s, color 0.2s; }
.custom-dropdown-trigger:hover { background-color: var(--surf-container); color: var(--on-surf); }
.custom-dropdown-menu { position: absolute; top: calc(100% + var(--space-1)); left: 0; background-color: var(--surf); border-radius: var(--radius-md); box-shadow: 0 4px 14px rgba(0,0,0,0.15); min-width: 180px; padding: var(--space-2) 0; z-index: 10; opacity: 0; transform: translateY(-10px); pointer-events: none; transition: opacity 0.2s, transform 0.2s; margin: 0; list-style: none; }
.custom-dropdown-menu.active { opacity: 1; transform: translateY(0); pointer-events: auto; }
.custom-dropdown-menu li { padding: 10px var(--space-4); font-size: 0.9rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; transition: background-color 0.2s; border-bottom: none; }
.custom-dropdown-menu li:hover { background-color: var(--surf-container); }
.custom-dropdown-menu li.selected { background-color: var(--primary-container); font-weight: 500; color: var(--on-primary-container); }

/* --- Layout & Cards --- */
.main-container { margin-top: calc(var(--header-height) + var(--space-6)); padding: 0 var(--space-6) var(--space-8) var(--space-6); max-width: 1400px; margin-left: auto; margin-right: auto; }
.grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--space-6); }

.card { background: var(--surf); padding: var(--space-6); border-radius: var(--radius-xl); box-shadow: 0 1px 3px rgba(0,0,0,0.05); }

.card-header { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-3); }
.card-title-row { display: flex; align-items: center; justify-content: space-between; }
.card-title-left { display: flex; align-items: center; gap: 14px; }
.header-icon { display: flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: var(--radius-md); background-color: var(--primary-container); color: var(--primary); }
.card-title-row h2 { font-size: 1.25rem; margin: 0; font-weight: 500; }
.card-action-row { display: flex; align-items: center; width: 100%; }

.app-header-link { margin-right: calc(-1 * var(--space-2)); }

ul { list-style: none; padding: 0; margin: 0; }
li.trello-card, li.task-card, li.training-card, li.email-card, li.cal-event-card, li.link-card { background-color: var(--surf-container); border-radius: var(--radius-lg); margin-bottom: var(--space-2); transition: background-color 0.2s; }
li.trello-card:hover, li.task-card:hover, li.email-card:hover, li.cal-event-card:hover, li.link-card:hover { background-color: var(--surf-container-high); }
li.training-card:hover { background-color: var(--surf-container-high); }
li.training-card.completed { opacity: 0.5; background-color: transparent; border: 1px solid var(--outline); }

/* --- Modul Layouts --- */
li.trello-card { padding: var(--space-3) var(--space-4); display: flex; align-items: flex-start; gap: var(--space-3); }
li.trello-card > a { display: flex; align-items: flex-start; text-decoration: none; color: inherit; flex-grow: 1; min-width: 0; }
.trello-card-title { font-weight: 400; font-size: 0.9rem; line-height: 1.4; word-break: break-word; margin-top: 1px; }

li.task-card, li.training-card { padding: var(--space-3) var(--space-4); display: flex; align-items: flex-start; gap: 6px; transition: background-color 0.2s, opacity 0.2s; }
.card-actions { display: flex; gap: 0; margin-left: auto; flex-shrink: 0; margin-top: 1px; }
.task-content { display: flex; flex-direction: column; flex-grow: 1; min-width: 0; }
.task-card-title { font-weight: 400; font-size: 0.9rem; line-height: 1.4; word-break: break-word; margin-top: 1px; }
.task-date-subtext { font-size: 0.8rem; display: flex; align-items: center; gap: var(--space-1); margin-top: var(--space-1); color: var(--on-surf-variant); }
.task-date-subtext .material-symbols-rounded { font-size: 14px; }
.task-overdue { color: var(--error); font-weight: 500; }
.task-today { color: var(--primary); font-weight: 500; }
.task-future { color: var(--on-surf-variant); }

input[type="checkbox"] { width: 20px; height: 20px; accent-color: var(--primary); cursor: pointer; margin-top: 2px; flex-shrink: 0; }

li.email-card { padding: var(--space-3) var(--space-4); display: flex; flex-direction: column; gap: var(--space-1); }
li.linkable { padding: 0; }
.card-link { text-decoration: none; color: inherit; cursor: pointer; background: none; border: none; font: inherit; text-align: left; }
.email-card-link { padding: var(--space-3) var(--space-4); display: flex; flex-direction: column; gap: var(--space-1); width: 100%; }
.cal-event-link { padding: var(--space-3) var(--space-4); display: flex; flex-direction: column; width: 100%; }
.section-wrapper { border: none; padding: 0; display: block; list-style: none; }
.custom-dropdown-menu li.cal-filter-item { justify-content: flex-start; gap: var(--space-3); }
.cal-filter-checkbox { pointer-events: none; margin: 0; }
.cal-filter-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.email-sender-line { display: flex; align-items: center; gap: var(--space-2); justify-content: space-between; }
.sender-left { display: flex; align-items: center; gap: var(--space-2); overflow: hidden; }
.unread-dot { width: 8px; height: 8px; background-color: var(--primary); border-radius: var(--radius-full); flex-shrink: 0; }
.email-sender { font-weight: 500; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--on-surf); }
.email-sender.read { font-weight: 400; color: var(--on-surf-variant); }
.email-date { font-size: 0.75rem; color: var(--on-surf-variant); flex-shrink: 0; }
.email-subject { font-weight: 400; font-size: 0.85rem; color: var(--on-surf-variant); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; padding-left: 0; }
.email-subject.unread-padding { padding-left: var(--space-4); }
.email-subject.read { opacity: 0.7; }

.all-day-toggle, .category-toggle { display: flex; justify-content: space-between; align-items: center; background-color: var(--primary-container); color: var(--on-primary-container); padding: 10px var(--space-4); border-radius: var(--radius-lg); font-size: 0.9rem; font-weight: 500; cursor: pointer; margin-bottom: var(--space-4); transition: background-color 0.2s; }
.all-day-toggle:hover, .category-toggle:hover { background-color: var(--primary-container-hover); }
.all-day-toggle .chevron, .category-toggle .chevron { transition: transform 0.3s ease; }
.all-day-toggle.expanded .chevron, .category-toggle.expanded .chevron { transform: rotate(180deg); }
.all-day-container, .category-container { display: none; flex-direction: column; margin-bottom: var(--space-4); }
.all-day-container.expanded, .category-container.expanded { display: flex; }

li.cal-time-header { font-size: 0.85rem; font-weight: 600; color: var(--primary); padding: 0 0 0 var(--space-2) !important; margin: var(--space-2) 0; border: none !important; display: block; }
li.cal-event-card { padding: 0; }
.cal-event-title { font-weight: 400; color: var(--on-surf); font-size: 0.9rem; line-height: 1.4; }
.cal-event-subtext { font-size: 0.8rem; color: var(--on-surf-variant); display: flex; align-items: center; gap: 6px; }

li.link-card { padding: var(--space-3) var(--space-4); display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-1); }
.dashboard-link { text-decoration: none; color: inherit; display: flex; align-items: flex-start; gap: 10px; flex-grow: 1; }
.link-card-title { font-weight: 400; color: var(--on-surf); font-size: 0.9rem; line-height: 1.4; word-break: break-word; }
.info-btn { background: transparent; border: none; color: var(--primary); cursor: pointer; padding: 2px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: background 0.2s; }
.info-btn .material-symbols-rounded { font-size: 22px; }
.info-btn:hover { background: var(--primary-container); }

.empty-state { font-style: italic; color: var(--on-surf-variant); padding: 15px 0; text-align: center; font-size: 0.9rem; }
.spin { animation: spin 1s linear infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }

/* --- Modals --- */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(2px); display: flex; justify-content: center; align-items: center; z-index: 2000; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-content { background: var(--surf); width: 90%; max-width: 450px; border-radius: var(--radius-xl); padding: var(--space-6); box-shadow: 0 10px 30px rgba(0,0,0,0.2); transform: translateY(20px); transition: transform 0.2s; display: flex; flex-direction: column; max-height: 80vh; }
.modal-overlay.active .modal-content { transform: translateY(0); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-4); }
.modal-title { font-size: 1.25rem; font-weight: 500; color: var(--on-surf); margin: 0; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--on-surf-variant); padding: var(--space-2); border-radius: var(--radius-full); display: flex; transition: background 0.2s; margin-right: calc(-1 * var(--space-2)); }
.modal-close:hover { background: var(--surf-container); color: var(--on-surf); }

.modal-body { background: var(--bg); padding: var(--space-4); border-radius: var(--radius-md); font-size: 0.95rem; color: var(--on-surf); margin-bottom: var(--space-5); white-space: pre-wrap; word-break: break-word; overflow-y: auto; }
.modal-body.settings-body { white-space: normal; padding: 0; }
.modal-body.modal-body-padded { padding: var(--space-4); }
.modal-body a { color: var(--primary); text-decoration: underline; }
.modal-body a:hover { color: var(--on-primary-container); }
.modal-body hr { border: none; border-top: 1px solid var(--outline-variant); margin: var(--space-3) 0; }
.modal-chips-container { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.modal-chips-container:not(:empty) { margin-bottom: var(--space-4); }
.modal-chips-container .modal-chips { display: contents; }
.modal-chips-container .modal-chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px var(--space-3); border-radius: var(--radius-sm); font-size: 0.85rem; background: var(--primary-container); color: var(--on-primary-container); white-space: nowrap; }
.modal-chips-container .modal-chip .material-symbols-rounded { font-size: 18px; }
.modal-chips-container a.modal-chip-link { text-decoration: none; cursor: pointer; transition: background 0.2s; }
.modal-chips-container a.modal-chip-link:hover { background: var(--primary); color: var(--on-primary); }
.modal-body:empty { display: none; }
.modal-body h3 { font-size: 1.05rem; font-weight: 600; margin: 0 0 6px; color: var(--on-surf); }
.modal-body h3:not(:first-child) { margin-top: 14px; }
.modal-body h4 { font-size: 0.95rem; font-weight: 600; margin: 0 0 4px; color: var(--on-surf); }
.modal-body h4:not(:first-child) { margin-top: 10px; }
.modal-body ul, .modal-body ol { margin: 4px 0 8px 20px; padding: 0; }
.modal-body li { margin-bottom: 2px; }
.modal-body p { margin: 0 0 6px; }
.modal-body p:last-child { margin-bottom: 0; }
.modal-description { margin: 0; color: var(--on-surf-variant); }
.modal-description-spaced { margin-bottom: var(--space-4); }
.auth-error { color: var(--error); font-size: 0.85rem; margin-top: var(--space-2); display: none; }

.modal-footer { display: flex; justify-content: flex-end; gap: var(--space-2); }
.modal-footer-spaced { margin-top: var(--space-4); }
.btn-copy, .btn-primary { background: var(--primary); color: var(--on-primary); border: none; padding: 10px var(--space-5); border-radius: var(--radius-full); cursor: pointer; font-weight: 500; font-size: 0.9rem; display: flex; align-items: center; gap: var(--space-2); transition: background 0.2s; }
.btn-copy:hover, .btn-primary:hover { background: var(--primary-hover); }
.btn-icon { font-size: 20px; }
.btn-text { background: none; border: none; color: var(--primary); padding: 10px var(--space-5); border-radius: var(--radius-full); cursor: pointer; font-weight: 500; font-size: 0.9rem; font-family: inherit; transition: background 0.2s; }
.btn-text:hover { background: var(--primary-container); }

/* Datepicker */
.dp-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-3); }
.dp-month-label { font-size: 1rem; font-weight: 500; color: var(--on-surf); }
.dp-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: var(--space-1); text-align: center; }
.dp-weekday { font-size: 0.75rem; font-weight: 500; color: var(--on-surf-variant); padding: var(--space-2) 0; }
.dp-day { width: var(--space-8); height: var(--space-8); border: none; border-radius: var(--radius-full); background: none; font-size: 0.9rem; font-family: inherit; color: var(--on-surf); cursor: pointer; display: flex; align-items: center; justify-content: center; margin: 0 auto; transition: background 0.15s; }
.dp-day:hover { background: var(--surf-container); }
.dp-day.dp-today { border: 2px solid var(--primary); color: var(--primary); font-weight: 500; }
.dp-day.dp-selected { background: var(--primary); color: var(--on-primary); font-weight: 500; }
.dp-day.dp-selected.dp-today { border-color: var(--primary); }
.dp-empty { pointer-events: none; }

/* Auth Modal Specific */
.auth-input { width: 100%; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); border: 1px solid var(--outline); font-size: 1rem; font-family: inherit; background: var(--bg); color: var(--on-surf); margin-bottom: var(--space-2); outline: none; transition: border-color 0.2s; }
.auth-input:focus { border-color: var(--primary); }

/* --- Toggle Switch & Sortierung für Einstellungen --- */
.setting-item { display: flex; justify-content: space-between; align-items: center; padding: var(--space-4); border-bottom: 1px solid var(--outline); transition: background-color 0.2s; }
.setting-item:last-child { border-bottom: none; }
.setting-item:hover { background-color: var(--surf-container); }
.setting-label { font-weight: 500; display: flex; align-items: center; gap: var(--space-3); }

.setting-controls { display: flex; align-items: center; gap: var(--space-4); }
.order-controls { display: flex; gap: var(--space-1); }
.icon-btn-small { background: transparent; border: none; color: var(--on-surf-variant); cursor: pointer; padding: var(--space-1); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; transition: background 0.2s, color 0.2s; }
.icon-btn-small:hover:not(:disabled) { background: var(--primary-container); color: var(--primary); }
.icon-btn-small:disabled { opacity: 0.3; cursor: not-allowed; }

.switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--outline); transition: .4s; border-radius: var(--radius-full); }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: var(--radius-full); box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
input:checked + .slider { background-color: var(--primary); }
input:checked + .slider:before { transform: translateX(20px); }

/* --- Inline Edit --- */
[data-edit-action].editing .card-link { pointer-events: none; }
.inline-edit-input { width: 100%; padding: 2px 0; border: none; border-bottom: 2px solid var(--primary); background: transparent; font-family: inherit; font-size: 0.9rem; font-weight: inherit; line-height: 1.4; color: var(--on-surf); outline: none; border-radius: 0; pointer-events: auto; }

/* --- Responsive --- */
@media (max-width: 768px) {
  .top-app-bar { padding: 0 var(--space-3); }
  .header-title { font-size: 1.2rem; }
  .main-container { padding: 0 var(--space-4) var(--space-8) var(--space-4); margin-top: calc(var(--header-height) + var(--space-4)); }
  .grid-container { grid-template-columns: 1fr; gap: var(--space-4); }
  .desktop-only { display: none; }
  .mobile-only { display: flex; }
  .sync-chip { font-size: 0.8rem; padding: var(--space-1) var(--space-2); }
  .setting-item { padding: var(--space-3) var(--space-4); }
}

/* --- Toasts & Notifications --- */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background-color: var(--on-surf);
  color: var(--surf);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  animation: toast-in 0.3s forwards, toast-out 0.3s forwards 3s;
}

.toast.error { background-color: var(--error); color: var(--on-error); }
.toast.success { background-color: var(--success); color: #FFFFFF; }
.toast.update { background-color: var(--primary); color: #FFFFFF; cursor: pointer; pointer-events: auto; animation: toast-in 0.3s forwards; }

@keyframes toast-in {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translateY(20px); }
}

/* --- Error States --- */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-6) var(--space-4);
  color: var(--error);
  text-align: center;
  font-size: 0.9rem;
  font-weight: 500;
  gap: var(--space-2);
  background-color: var(--error-container);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2);
}
.error-state .material-symbols-rounded { font-size: 24px; }