:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #000000);
  --hint: var(--tg-theme-hint-color, #707579);
  --link: var(--tg-theme-link-color, #2481cc);
  --button-bg: var(--tg-theme-button-color, #2481cc);
  --button-text: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f4f4f5);
  --section-bg: var(--tg-theme-section-bg-color, #ffffff);
  --destructive: var(--tg-theme-destructive-text-color, #d14e4e);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.4;
}

header {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--secondary-bg);
}
header h1 { font-size: 18px; margin: 0; font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 10px; }
#user-badge { font-size: 12px; color: var(--hint); }
#btn-settings {
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
}

main { padding: 12px 16px 80px; }
#status { color: var(--hint); margin-bottom: 12px; font-size: 14px; }
#status.error { color: var(--destructive); }

#filter-bar { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
#tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}
#tabs .tab {
  flex: 0 0 auto;
  padding: 7px 12px;
  background: var(--secondary-bg);
  color: var(--text);
  border: none;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
#tabs .tab.active {
  background: var(--button-bg);
  color: var(--button-text);
}
#tabs .tab .badge {
  font-size: 11px;
  opacity: 0.75;
  font-variant-numeric: tabular-nums;
}
#search {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid var(--secondary-bg);
  border-radius: 8px;
  background: var(--section-bg);
  color: var(--text);
  font-family: inherit;
}

.group { margin-bottom: 14px; }
.group-header {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--hint);
  margin: 8px 0 6px;
  padding: 0 2px;
}
.empty-hint {
  color: var(--hint);
  text-align: center;
  padding: 24px 12px;
  font-size: 14px;
}

ul.task-group { list-style: none; padding: 0; margin: 0; }
ul.task-group li,
ul#tasks-list li {
  background: var(--section-bg);
  border: 1px solid var(--secondary-bg);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.task-title { font-weight: 600; }
.task-meta { color: var(--hint); font-size: 13px; }
.task-actions { margin-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.task-actions button {
  flex: 0 0 auto;
  font-size: 13px;
  padding: 6px 10px;
  background: var(--secondary-bg);
  color: var(--text);
  border: none;
  border-radius: 8px;
  cursor: pointer;
}
.task-actions button.danger { color: var(--destructive); }

#btn-add {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 14px;
  background: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  z-index: 10;
}

#form-modal, #settings-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 20;
}
.modal-content {
  background: var(--bg);
  width: 100%;
  max-width: 540px;
  max-height: 92vh;
  overflow-y: auto;
  border-radius: 16px 16px 0 0;
  padding: 16px;
}
.modal-content h2 { margin: 0 0 12px; font-size: 18px; }
.modal-content label {
  display: block;
  margin-bottom: 12px;
  font-size: 14px;
}
.modal-content label > span { display: block; margin-bottom: 4px; color: var(--hint); }
.modal-content input, .modal-content textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--secondary-bg);
  border-radius: 8px;
  background: var(--section-bg);
  color: var(--text);
  font-size: 16px;
  font-family: inherit;
}
.modal-content fieldset {
  border: 1px solid var(--secondary-bg);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 12px;
}
.modal-content fieldset legend { padding: 0 6px; font-size: 13px; color: var(--hint); }
.radio-row { display: flex; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.schedule-block { margin-top: 4px; }

label.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 0 8px 4px 0;
  font-size: 14px;
}
label.checkbox-inline > span { display: inline; margin: 0; color: inherit; }
label.checkbox-inline input { width: auto; }

label.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0 12px;
}

.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.form-actions button {
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 15px;
}
#btn-cancel, #btn-settings-cancel { background: var(--secondary-bg); color: var(--text); }
#btn-submit, #btn-settings-submit { background: var(--button-bg); color: var(--button-text); font-weight: 600; }