:root {
  --bg: #0b0c10;
  --panel: #111218;
  --panel-2: #171923;
  --text: #e7e9ee;
  --muted: #a7acb8;
  --accent: #7c5cff;
  --accent-2: #9f8aff;
  --stroke: #232634;
  --strokeinputs: #353c5c;
  --success: #1db954;
  --danger: #ff4d4f;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.25), 0 2px 8px rgba(0, 0, 0, 0.2);
  --gap: 12px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --panel: #ffffff;
    --panel-2: #f9f9ff;
    --text: #1a1d29;
    --muted: #5a6072;
    --accent: #5a43ff;
    --accent-2: #836eff;
    --stroke: #e8eaf2;
    --shadow: 0 10px 30px rgba(20, 20, 40, 0.06),
      0 3px 10px rgba(20, 20, 40, 0.05);
  }
}

/* базовая типографика/сброс */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  background: linear-gradient(160deg, var(--bg), #0f1020 40%, #0b0c10 100%);
  color: var(--text);
  font: 15px/1.5 Inter, system-ui, -apple-system, Segoe UI, Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
}
.container {
  max-width: 1000px;
  padding: 28px 20px 60px;
  margin: 0 auto;
}

header.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-badge {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: radial-gradient(
    120% 120% at 0% 0%,
    var(--accent-2),
    var(--accent) 60%,
    #3a2bff
  );
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.15),
    0 6px 16px rgba(92, 72, 255, 0.35);
}
.brand h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
  margin: 0;
}
.subtle {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.panel {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

/* заголовок списка */
.list-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 16px;
  border-bottom: 1px solid var(--stroke);
}
.list-head .col {
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  color: var(--muted);
}

/* сетка колонок: [checkbox | title | due | type] */
.grid {
  display: grid;
  grid-template-columns: 44px minmax(200px, 1fr) 160px 160px;
  align-items: center;
  gap: var(--gap);
}

/* строки задач */
.task-row {
  display: grid;
  grid-template-columns: 44px minmax(200px, 1fr) 160px 160px;
  align-items: center;
  gap: var(--gap);
  padding: 14px 16px;
  border-bottom: 1px dashed var(--stroke);
}
.task-row:last-child {
  border-bottom: none;
}

.task-row:hover {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0)
  );
}

/* чекбокс — кастомный, но нативный input сохраняется для доступности */
.check-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}
.checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1.5px solid var(--strokeinputs);
  background: #0000;
  position: relative;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.checkbox:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.35);
}
.checkbox:checked {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  border-color: transparent;
}
.checkbox:checked::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" fill="none" viewBox="0 0 20 20"><path stroke="white" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 10.5l3.2 3.2L15 7.9"/></svg>')
    center/16px 16px no-repeat;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.2));
}

/* название задачи */
.title {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.title-text {
  white-space: normal; /* разрешаем переносы строк */
  overflow: visible; /* показываем весь текст */
  text-overflow: clip; /* убираем троеточие */
  word-break: break-word; /* переносим длинные слова, если не влезают */
}
.title .badge {
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--stroke);
  padding: 2px 6px;
  border-radius: 999px;
}

/* дата */
.due {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.due .chip {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.02);
}
.due.overdue .chip {
  border-color: rgba(255, 77, 79, 0.35);
  background: rgba(255, 77, 79, 0.08);
}

/* селект Type */
.type select {
  width: 100%;
  padding: 10px 36px 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  appearance: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;

  /* Кастомная стрелка */
  background-image: url('data:image/svg+xml;utf8,<svg fill="%23a7acb8" xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24"><path d="M7 10l5 5 5-5z"/></svg>');
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
}

.type select:hover {
  border-color: var(--accent);
}

.type select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.35);
}

.type select option {
  background-color: var(--panel);
  color: var(--text);
}
.type .tag {
  display: none; /* на будущее: можно отрендерить бейдж вместо селекта */
}

/* состояние completed */
.task-row.completed .title-text {
  text-decoration: line-through;
  color: var(--muted);
}
.task-row.completed .title .badge {
  opacity: 0.4;
}
.task-row.completed .due .chip {
  opacity: 0.6;
}

/* пустое состояние */
.empty {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}
.empty .box {
  border: 1px dashed var(--stroke);
  border-radius: var(--radius);
  padding: 28px 20px;
  max-width: 560px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(255, 255, 255, 0)
  );
}
.empty b {
  color: var(--text);
}

/* адаптив */
@media (max-width: 720px) {
  .grid,
  .task-row {
    grid-template-columns: 44px 1fr 120px 130px;
  }
  .due .chip {
    padding: 6px 8px;
  }
}
@media (max-width: 560px) {
  .list-head {
    display: none;
  }
  .task-row {
    grid-template-columns: 44px 1fr;
    grid-auto-rows: auto;
    gap: 10px 12px;
  }
  .task-row .due,
  .task-row .type {
    grid-column: 2 / -1;
    display: flex;
    gap: 10px;
    align-items: center;
  }
  .task-row .due::before,
  .task-row .type::before {
    content: attr(data-label);
    min-width: 72px;
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
  }
}

.task-row .type {
  position: relative;
  padding-right: 28px; /* резервируем место */
}

.task-row .delete-btn {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.task-row:hover .delete-btn {
  opacity: 1;
}

/* подсказка по лимиту названия */
.limit-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.task-row {
  position: relative;
}

.delete-btn {
  display: none;
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  opacity: 0.6;
}

.task-row:hover .delete-btn {
  display: block;
}

.delete-btn:hover {
  opacity: 1;
}

/* Панель добавления */
.add-panel {
  margin-bottom: 16px;
}
.add-form {
  display: grid;
  grid-template-columns: 1fr 160px 160px 120px; /* title | date | type | button */
  gap: 12px;
  padding: 14px 16px;
}
.input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  color: var(--text);
  font-size: 14px;
}
.input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.35);
  border-color: var(--accent);
}
.btn-add {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: white;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.05s ease, filter 0.15s ease;
}
.btn-add:hover {
  filter: brightness(1.05);
}
.btn-add:active {
  transform: translateY(1px);
}

/* адаптив */
@media (max-width: 720px) {
  .add-form {
    grid-template-columns: 1fr;
  }
}

.due-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.due-input {
  font: inherit;
  padding: 0;
  border: none;
  outline: 1px solid #ccc;
}

/* Auth (login / register) modern card styles */
#login-form,
#register-form {
  max-width: 420px;
  margin: 56px auto;
  padding: 24px;
  border-radius: 12px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.03),
    rgba(255, 255, 255, 0.01)
  );
  border: 1px solid var(--stroke);
  box-shadow: 0 8px 30px rgba(2, 6, 23, 0.6);
  display: block;
}

#login-form input,
#register-form input {
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 12px;
  border-radius: 10px;
  border: 1px solid var(--strokeinputs);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  color: var(--text);
  font-size: 14px;
}

#login-form button,
#register-form button {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.05s ease, filter 0.12s ease;
}

#login-form button:hover,
#register-form button:hover {
  filter: brightness(1.05);
}

#login-form p,
#register-form p {
  margin: 10px 0 0;
  text-align: center;
}
#login-form a,
#register-form a {
  color: var(--accent-2);
  text-decoration: none;
  font-weight: 600;
}
#login-form a:hover,
#register-form a:hover {
  text-decoration: underline;
}

#login-message {
  max-width: 420px;
  margin: 6px auto 0;
  text-align: center;
  color: var(--danger);
  font-size: 13px;
}

@media (prefers-color-scheme: light) {
  #login-form,
  #register-form {
    box-shadow: var(--shadow);
  }
  .loader-overlay {
    background: rgba(250, 250, 252, 0.9);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (max-width: 480px) {
  #login-form,
  #register-form {
    margin: 24px 16px;
    padding: 18px;
  }
}

.loader-overlay {
  /* full-screen centered overlay; dark translucent by default */
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  font-family: system-ui, Arial, sans-serif;
  background: rgba(11, 12, 16, 0.75);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.spinner {
  width: 56px;
  height: 56px;
  transform-origin: center;
}
.spinner .spinner-head {
  stroke-dasharray: 125;
  stroke-dashoffset: 90;
  transform-origin: center;
  animation: spinner-rotate 1s linear infinite,
    spinner-head 1.2s ease-in-out infinite;
}
.spinner .spinner-track {
  opacity: 0.12;
}
@keyframes spinner-rotate {
  to {
    transform: rotate(360deg);
  }
}
@keyframes spinner-head {
  0% {
    stroke-dashoffset: 125;
  }
  50% {
    stroke-dashoffset: 40;
  }
  100% {
    stroke-dashoffset: 125;
  }
}

/* accessibility helper */
.visually-hidden {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}