:root {
  --bg-color: #121212;
  --surface-color: #1e1e1e;
  --surface-hover: #2c2c2c;
  --text-primary: #ffffff;
  --text-secondary: #aaaaaa;
  --accent-color: #3b82f6; /* Modern blue */
  --accent-hover: #60a5fa;
  --danger-color: #ef4444;
  --border-radius: 12px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --transition: 0.2s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* Allow text selection inside modals and forms */
input, textarea, select, [contenteditable] {
  -webkit-user-select: auto;
  user-select: auto;
}

/* App Container */
#app {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  padding-bottom: 100px; /* Space for FAB */
}

/* Header & Auth */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--surface-hover);
}

h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.auth-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.user-name {
  font-weight: 600;
  font-size: 14px;
}

.user-role {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Buttons */
button {
  background-color: var(--surface-color);
  color: var(--text-primary);
  border: 1px solid var(--surface-hover);
  padding: 8px 16px;
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition);
}

button:hover {
  background-color: var(--surface-hover);
}

button.primary {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

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

button.danger {
  color: var(--danger-color);
  border-color: transparent;
  background-color: transparent;
}

button.danger:hover {
  background-color: rgba(239, 68, 68, 0.1);
}

/* Loading State */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 50vh;
  color: var(--text-secondary);
  font-size: 16px;
}

/* Auth View */
.auth-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 70vh;
  text-align: center;
}

.auth-view p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 400px;
}

/* Search Bar */
.search-container {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  padding-right: 40px;
  background-color: var(--surface-color);
  border: 1px solid var(--surface-hover);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 16px;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
}

.clear-search {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  padding: 4px;
}

/* Category Section */
.category {
  margin-bottom: var(--spacing-lg);
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.category-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.category-actions {
  display: flex;
  gap: var(--spacing-sm);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.category-header:hover .category-actions {
  opacity: 1; /* Desktop hover */
}

@media (hover: none) {
  .category-actions {
    display: none; /* Mobile hides icons entirely in favor of gestures */
  }
}

.icon-btn {
  background: transparent;
  border: none;
  font-size: 16px;
  padding: 4px 8px;
  opacity: 0.6;
}

.icon-btn:hover {
  opacity: 1;
  background: var(--surface-color);
}

/* Item Grid */
.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

/* Item Card */
.item-card {
  background-color: var(--surface-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: transform var(--transition), background-color var(--transition);
  border: 1px solid transparent;
  position: relative;
}

.item-card:hover {
  transform: translateY(-2px);
  background-color: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.1);
}

.item-icon {
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  flex-shrink: 0;
}

.item-details {
  flex: 1;
  overflow: hidden;
}

.item-name {
  font-weight: 500;
  font-size: 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-domain {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  opacity: 0; /* Hidden by default */
  transition: opacity var(--transition);
}

@media (hover: hover) {
  .item-card-front:hover .item-actions,
  .item-card-front:focus-within .item-actions {
    opacity: 1; /* Desktop hover reveals actions natively */
  }
}

/* Swipeable Wrappers */
.swipe-container {
  position: relative;
  background-color: var(--bg-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  touch-action: pan-y; /* Crucial for native vertical scrolling */
}

.swipe-actions-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 140px;
  display: flex;
  padding: 0;
  gap: 0;
  border-radius: var(--border-radius);
}

.swipe-action-btn {
  border: none;
  border-radius: 0;
  width: 70px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
}

.item-card-front {
  background-color: var(--surface-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  position: relative;
  z-index: 2;
  cursor: pointer;
  -webkit-touch-callout: none; /* Prevents iOS native long press */
}

.item-action-btn {
  background: var(--surface-hover);
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
}

.item-action-btn:hover {
  background: var(--surface-color);
  filter: brightness(1.2);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal {
  background-color: var(--surface-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  animation: modal-enter 0.2s ease-out;
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h2 {
  margin-bottom: var(--spacing-lg);
  font-size: 20px;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.form-group input, 
.form-group select {
  width: 100%;
  background-color: var(--bg-color);
  border: 1px solid var(--surface-hover);
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-color);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

/* Floating Action Button */
.fab {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--accent-color);
  color: white;
  border: none;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  z-index: 100;
  transition: transform var(--transition), background-color var(--transition);
}

.fab:hover {
  transform: scale(1.05);
  background-color: var(--accent-hover);
}

/* FAB Menu */
.fab-menu {
  position: fixed;
  bottom: 88px;
  right: var(--spacing-lg);
  background: var(--surface-color);
  border: 1px solid var(--surface-hover);
  border-radius: var(--border-radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  min-width: 160px;
  z-index: 99;
  overflow: hidden;
  animation: fab-menu-enter 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-origin: bottom right;
}

@keyframes action-sheet-up {
  from { opacity: 0; transform: translateY(100px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fab-menu-enter {
  from { opacity: 0; transform: scale(0.8) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.fab-menu-btn {
  background: transparent;
  border: none;
  border-radius: 0;
  color: var(--text-primary);
  padding: 12px 16px;
  text-align: left;
  font-size: 15px;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.fab-menu-btn:hover {
  background: var(--surface-hover);
}

.fab-menu-btn:not(:last-child) {
  border-bottom: 1px solid var(--surface-hover);
}

/* Emoji Picker */
emoji-picker {
  width: 100%;
  height: 300px;
  --background: var(--bg-color);
  --border-color: var(--surface-hover);
  --input-border-color: var(--surface-hover);
  --button-hover-background: var(--surface-hover);
  --font-family: 'Inter', sans-serif;
  --input-font-color: var(--text-primary);
  --search-background-color: var(--surface-color);
  --search-focus-background-color: var(--surface-hover);
  --category-font-color: var(--text-secondary);
}

/* Error message */
.error-message {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger-color);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: var(--spacing-md);
  font-size: 14px;
}