/* Synthwave Color Palette */
:root {
  --bg-color: #0d0221;
  --bg-grid: rgba(255, 42, 109, 0.05);
  --accent-pink: #ff2a6d;
  --accent-cyan: #05d9e8;
  --accent-cyan-glow: rgba(5, 217, 232, 0.4);
  --accent-yellow: #f1c40f;
  --text-main: #e0e6ed;
  --text-muted: #8b9bb4;
  --card-bg: rgba(26, 11, 46, 0.7);
  --border-color: rgba(5, 217, 232, 0.2);
  --sidebar-width: 280px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  /* Full screen layout for app view, center for login */
  display: flex;
  min-height: 100vh;
  overflow: hidden;

  /* Synthwave Grid Background */
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center bottom;
}

/* Smooth Glow effect taking up the whole background space smoothly */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center bottom, rgba(255, 42, 109, 0.2) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Make standard date picker icon white */
input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(1);
  cursor: pointer;
}

/* Quick Date Buttons */
.date-input-group {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 1rem;
}

.date-input-group input[type="date"] {
  margin-bottom: 0;
  flex: 1;
}

.quick-date-btn {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1.2rem;
  display: grid;
  place-items: center;
}

.quick-date-btn:hover {
  background: rgba(255, 42, 109, 0.2);
  border-color: var(--accent-pink);
  color: var(--accent-pink);
}

/* Overdue Styling */
.task-overdue .task-title {
  color: var(--accent-pink);
  font-weight: 600;
}
.task-overdue .task-meta {
  color: rgba(255, 42, 109, 0.8);
}
.task-overdue.task-item {
  border-left-color: var(--accent-pink);
  border-left-width: 4px;
}

/* Completed group styles */
.task-completed-group summary {
  color: var(--text-muted);
}
.task-completed-group .task-item {
  opacity: 0.6;
  border-left-color: #5a667b;
  border-left-width: 4px;
}
.task-completed-group .task-item:hover {
  opacity: 1;
}

/* Main App Layout */
.app-layout {
  display: flex;
  flex: 1;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Login Card */
.login-card {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5),
    0 0 15px var(--accent-cyan-glow) inset;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Typography */
h1,
h2,
h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
  text-shadow: 0 0 10px var(--accent-cyan-glow);
}

h1 {
  text-align: center;
}

/* Forms */
input[type="text"],
input[type="password"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 1rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 42, 109, 0.3);
  border-radius: 8px;
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  transition: all 0.3s ease;
  outline: none;
}

select option {
  background: #000;
  color: var(--text-main);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-pink);
  box-shadow: 0 0 10px rgba(255, 42, 109, 0.4);
}

.detail-panel input#title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--accent-cyan);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

/* Sidebar Layout */
.sidebar {
  width: var(--sidebar-width);
  background: rgba(13, 2, 33, 0.85); /* Darker than body */
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  overflow-y: auto;
  backdrop-filter: blur(10px);
  z-index: 10;
}

.sidebar-header {
  padding: 0 1.5rem 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h2 {
  margin: 0;
  font-size: 1.2rem;
  text-shadow: none;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 1.5rem;
  cursor: pointer;
  color: var(--text-main);
  transition: background 0.2s;
  border-left: 3px solid transparent;
}

.category-item:hover,
.category-item.active {
  background: rgba(255, 42, 109, 0.1);
}

.category-item.active {
  border-left-color: var(--accent-pink);
  color: var(--accent-pink);
}

.category-icon {
  margin-right: 12px;
  color: var(--accent-cyan);
}

.category-count {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1;
}

.category-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-menu {
  font-size: 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}


/* Main Content Area */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 2rem;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.main-header h1 {
  margin: 0;
  text-align: left;
}

.add-task-btn-header {
  width: auto;
  margin: 0;
  padding: 8px 16px;
}

/* Detail Panel (Right Side Drawer like MS Todo) */
.detail-panel {
  width: 350px;
  background: var(--card-bg);
  border-left: 1px solid var(--border-color);
  padding: 1.5rem;
  overflow-y: auto;
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  z-index: 20;
}

.detail-panel.open {
  transform: translateX(0);
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.detail-header h2 {
  margin: 0;
  font-size: 1.2rem;
  text-align: left;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: auto;
  margin: 0;
}

.btn-close:hover {
  color: var(--accent-pink);
  background: none;
}

/* Collapsible Sections */
.task-group {
  margin-bottom: 1.5rem;
}

.task-group summary {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  list-style: none; /* Hide default arrow */
  user-select: none;
}

.task-group summary::-webkit-details-marker {
  display: none; /* Hide default arrow in webkit */
}

/* Custom Arrow for Summary */
.task-group summary::before {
  content: "▼"; /* Down arrow for expanded */
  display: inline-block;
  font-size: 0.8em;
  color: var(--accent-cyan);
  margin-right: 10px;
  transition: transform 0.2s;
  transform: rotate(-90deg); /* Start pointed right */
}

.task-group[open] summary::before {
  transform: rotate(0deg); /* Point down when open */
}

.task-group-count {
  margin-left: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Task Items */
.task-list {
  list-style: none;
  padding-left: 10px; /* Indent slightly under the summary */
}

.task-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.task-item:hover {
  background: rgba(255, 42, 109, 0.05);
  border-color: rgba(255, 42, 109, 0.3);
}

.task-item.selected {
  border-color: var(--accent-pink);
  background: rgba(255, 42, 109, 0.1);
}

/* Custom Checkbox (Circle) */
.task-checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--accent-cyan);
  border-radius: 50%;
  margin-right: 15px;
  cursor: pointer;
  position: relative;
  display: grid;
  place-content: center;
  background: transparent;
  flex-shrink: 0;
}

.task-checkbox::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transform: scale(0);
  transition: 120ms transform ease-in-out;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 5px var(--accent-cyan-glow);
}

.task-checkbox:checked::before {
  transform: scale(1);
}

.task-checkbox:checked {
  border-color: var(--text-muted);
}
.task-checkbox:checked::before {
  background-color: var(--text-muted);
  box-shadow: none;
}

.task-content {
  flex: 1;
  min-width: 0; /* allows truncation */
}

.task-title {
  display: block;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.task-item.completed .task-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

.task-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.meta-icon {
  font-size: 0.9em;
}

/* Buttons */
button {
  width: 100%;
  padding: 12px;
  margin-bottom: 0.8rem;
  background: transparent;
  border: 1px solid var(--accent-cyan);
  border-radius: 8px;
  color: var(--accent-cyan);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

button:hover {
  background: var(--accent-cyan);
  color: var(--bg-color);
  text-shadow: none;
}

button.primary {
  background: var(--accent-pink);
  border-color: var(--accent-pink);
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

button.primary:hover {
  background: transparent;
  color: var(--accent-pink);
}

button.danger {
  border-color: #ff4757;
  color: #ff4757;
}

button.danger:hover {
  background: #ff4757;
  color: white;
}

button.small {
  padding: 6px 10px;
  font-size: 0.8rem;
  border-color: var(--text-muted);
  color: var(--text-muted);
  margin-bottom: 0;
}

button.small:hover {
  border-color: white;
  color: white;
  background: transparent;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 1.5rem;
}

.action-buttons .row {
  display: flex;
  gap: 10px;
}

.action-buttons .row button {
  margin-bottom: 0;
}

/* Radios for repeat options */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 1rem;
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: 8px;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
}

.radio-group label:hover {
  color: var(--accent-cyan);
}

input[type="radio"] {
  appearance: none;
  background-color: transparent;
  margin: 0;
  color: currentColor;
  width: 1.15em;
  height: 1.15em;
  border: 1px solid var(--accent-cyan);
  border-radius: 50%;
  display: grid;
  place-content: center;
  padding: 0;
}

input[type="radio"]::before {
  content: "";
  width: 0.65em;
  height: 0.65em;
  border-radius: 50%;
  transform: scale(0);
  transition: 120ms transform ease-in-out;
  box-shadow: inset 1em 1em var(--accent-pink);
}

input[type="radio"]:checked::before {
  transform: scale(1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-cyan);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-pink);
}

/* Important task styling */
.task-item.task-important {
  border-left: 4px solid var(--accent-yellow);
  background: rgba(241, 196, 15, 0.05);
}

.task-item.task-important .task-title {
  color: var(--accent-yellow);
}

.task-item.task-important:hover {
  background: rgba(241, 196, 15, 0.1);
  border-color: var(--accent-yellow);
}

/* Important toggle in detail panel */
.important-toggle {
  margin-bottom: 1rem;
}

.important-toggle label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 10px 14px;
  border: 1px solid rgba(241, 196, 15, 0.3);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
  transition: all 0.2s;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.important-toggle label:hover {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
  background: rgba(241, 196, 15, 0.08);
}

.important-toggle input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--accent-yellow);
  border-radius: 4px;
  background: transparent;
  margin: 0;
  padding: 0;
  flex-shrink: 0;
  display: grid;
  place-content: center;
  cursor: pointer;
}

.important-toggle input[type="checkbox"]::before {
  content: "✓";
  font-size: 12px;
  color: var(--accent-yellow);
  transform: scale(0);
  transition: transform 0.15s ease-in-out;
}

.important-toggle input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.important-toggle input[type="checkbox"]:checked + span {
  color: var(--accent-yellow);
}

/* Pull-to-refresh indicator */
.ptr-indicator {
  text-align: center;
  padding: 10px;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(5, 217, 232, 0.05);
}

/* Mobile refresh button - hidden on desktop */
.mobile-refresh-btn {
  display: none;
}

/* Mobile toggle button - hidden on desktop */
.mobile-category-toggle {
  display: none;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .app-layout {
    flex-direction: column;
  }

  /* Sidebar hidden by default on mobile */
  .sidebar {
    display: none;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    max-height: 250px;
  }

  /* Shown when toggled */
  .sidebar.mobile-open {
    display: flex;
  }

  .detail-panel {
    width: 100%;
  }

  /* Show toggle button on mobile */
  .mobile-category-toggle {
    display: block;
    width: auto;
    padding: 8px 12px;
    margin: 0;
    flex-shrink: 0;
    font-size: 1.2rem;
  }

  /* Show refresh button on mobile */
  .mobile-refresh-btn {
    display: block;
    width: auto;
    padding: 8px 12px;
    margin: 0;
    flex-shrink: 0;
    font-size: 1.3rem;
    color: var(--accent-cyan);
    border-color: var(--border-color);
  }
}