:root {
  --bg-color: var(--tg-theme-bg-color, #ffffff);
  --text-color: var(--tg-theme-text-color, #111111);
  --hint-color: var(--tg-theme-hint-color, #8e8e93);
  --button-color: var(--tg-theme-button-color, #2481cc);
  --button-text-color: var(--tg-theme-button-text-color, #ffffff);
  --secondary-bg: var(--tg-theme-secondary-bg-color, #f2f2f7);
  --border-color: rgba(0, 0, 0, 0.08);
  --card-bg: var(--tg-theme-bg-color, #ffffff);
  --accent-color: #34c759;
}

@media (prefers-color-scheme: dark) {
  :root {
    --border-color: rgba(255, 255, 255, 0.1);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.hidden {
  display: none !important;
}

/* ========================================================
   Лоадер и Экран 403
   ======================================================== */
.loader-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--bg-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  gap: 16px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--secondary-bg);
  border-top-color: var(--button-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-text {
  font-size: 14px;
  color: var(--hint-color);
}

.denied-screen {
  position: fixed;
  inset: 0;
  background-color: var(--bg-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  text-align: center;
  z-index: 999;
}

.denied-icon {
  font-size: 56px;
  margin-bottom: 16px;
}

.denied-screen h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.denied-screen p {
  color: var(--hint-color);
  font-size: 15px;
  line-height: 1.4;
  margin-bottom: 24px;
}

.denied-hint {
  font-size: 12px;
  color: var(--hint-color);
  background-color: var(--secondary-bg);
  padding: 10px 16px;
  border-radius: 10px;
}

/* ========================================================
   Основной контейнер приложения
   ======================================================== */
.app-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding-bottom: 76px; /* место под нижний бар */
}

.app-header {
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-color);
}

.app-header h1 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.stats-badge {
  font-size: 13px;
  color: var(--hint-color);
}

.icon-btn {
  background: var(--secondary-bg);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  color: var(--text-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s;
}

.icon-btn:active {
  transform: scale(0.92);
}

/* ========================================================
   Табы разделов
   ======================================================== */
.tabs-scroller {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
  scrollbar-width: none;
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  scroll-behavior: smooth;
  cursor: grab;
}

.tabs-scroller:active {
  cursor: grabbing;
}

.tabs-scroller::-webkit-scrollbar {
  display: none;
}

.tab-pill {
  flex-shrink: 0;
  padding: 8px 16px;
  border-radius: 20px;
  background-color: var(--secondary-bg);
  color: var(--text-color);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.tab-pill.active {
  background-color: var(--button-color);
  color: var(--button-text-color);
}

.tab-badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.1);
}

.tab-pill.active .tab-badge {
  background: rgba(255, 255, 255, 0.25);
}

/* ========================================================
   Список задач
   ======================================================== */
.tasks-container {
  flex: 1;
  padding: 12px 16px;
}

.tasks-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background-color: var(--secondary-bg);
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
  user-select: none;
}

.task-card:active {
  transform: scale(0.99);
}

.custom-checkbox {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  border: 2px solid var(--hint-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.task-card.done .custom-checkbox {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.checkbox-icon {
  display: none;
  color: #ffffff;
  font-size: 14px;
  font-weight: bold;
}

.task-card.done .checkbox-icon {
  display: block;
}

.task-title {
  font-size: 16px;
  line-height: 1.35;
  color: var(--text-color);
  flex: 1;
  word-break: break-word;
  transition: opacity 0.2s, text-decoration 0.2s;
}

.task-card.done .task-title {
  text-decoration: line-through;
  opacity: 0.5;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 16px;
  text-align: center;
  color: var(--hint-color);
  gap: 8px;
}

.empty-icon {
  font-size: 40px;
}

/* ========================================================
   Нижний бар добавления задачи
   ======================================================== */
.add-task-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-color);
  border-top: 1px solid var(--border-color);
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  display: flex;
  gap: 10px;
  align-items: center;
  z-index: 50;
}

.add-task-bar input {
  flex: 1;
  background-color: var(--secondary-bg);
  border: 1px solid transparent;
  color: var(--text-color);
  font-size: 15px;
  padding: 12px 16px;
  border-radius: 12px;
  outline: none;
}

.add-task-bar input:focus {
  border-color: var(--button-color);
}

.add-btn {
  background-color: var(--button-color);
  color: var(--button-text-color);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s, transform 0.15s;
}

.add-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.add-btn:not(:disabled):active {
  transform: scale(0.92);
}