/* Base */
:root {
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --muted-2: rgba(255, 255, 255, 0.56);
  --border: rgba(255, 255, 255, 0.16);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);

  --primary: #7c5cff;
  --primary-2: #2dd4bf;
  --danger: #ff4d6d;

  --radius: 16px;
  --radius-sm: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial,
    "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% 10%, rgba(124, 92, 255, 0.35), transparent 60%),
    radial-gradient(900px 700px at 85% 20%, rgba(45, 212, 191, 0.24), transparent 65%),
    radial-gradient(900px 700px at 40% 85%, rgba(255, 77, 109, 0.18), transparent 65%),
    var(--bg);
  padding: 16px;
}

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  font-size: 0.95em;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
}

/* Layout */
.app {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.app__header {
  padding: 18px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
}

.app__title {
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: 0.2px;
}

.app__subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.composer,
.panel {
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.composer__label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 600;
}

.composer__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.composer__input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  outline: none;
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
}

.composer__input:focus {
  border-color: rgba(124, 92, 255, 0.9);
  box-shadow: 0 0 0 4px rgba(124, 92, 255, 0.22);
}

.composer__hint {
  margin: 10px 0 0;
  font-size: 0.9rem;
  color: var(--muted-2);
}

.panel__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.panel__count {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

/* Buttons */
.button {
  min-height: 44px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  user-select: none;
}

.button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.button:active {
  transform: translateY(1px);
}

.button--primary {
  border-color: rgba(124, 92, 255, 0.7);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.9), rgba(45, 212, 191, 0.6));
}

.button--primary:hover {
  filter: brightness(1.06);
}

.button--ghost {
  background: transparent;
}

.button--danger {
  border-color: rgba(255, 77, 109, 0.55);
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 77, 109, 0.08);
}

.button--danger:hover {
  background: rgba(255, 77, 109, 0.14);
}

/* Task list */
.taskList {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.task {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.22);
}

.task__checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.task__title {
  min-width: 0;
  display: block;
  padding: 6px 8px;
  border-radius: 10px;
  outline: none;
}

.task__title:focus {
  box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.18);
  background: rgba(255, 255, 255, 0.06);
}

.task.is-completed .task__title {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: line-through;
}

.emptyState {
  margin: 12px 0 0;
  color: var(--muted-2);
}

/* Responsive */
@media (min-width: 768px) {
  body {
    padding: 24px;
  }
  .app {
    gap: 16px;
  }
  .app__title {
    font-size: 1.7rem;
  }
  .composer,
  .panel {
    padding: 18px;
  }
}

@media (min-width: 1024px) {
  body {
    padding: 32px;
  }
  .app {
    max-width: 900px;
  }
}