:root {
  --bg-color: #0f172a;
  --surface-color: #1e293b;
  --surface-hover: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-color: #3b82f6;
  --accent-hover: #60a5fa;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --border-color: #334155;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar & List Switcher */
.list-switcher {
  background-color: var(--surface-color);
  padding: 1rem;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.list-item-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.list-item-btn:hover {
  background-color: var(--surface-hover);
  color: var(--text-primary);
}

.list-item-btn.active {
  background-color: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.new-list-btn {
  background: var(--surface-hover);
  border: 1px dashed var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.new-list-btn:hover {
  background: var(--border-color);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 1rem;
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 1rem;
  padding-bottom: 120px; /* Extra space so FAB doesn't cover items */
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.settings-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-full);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.settings-btn:hover {
  background-color: var(--surface-color);
  color: var(--text-primary);
}

/* Input Area */
.input-area {
  background-color: var(--surface-color);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.item-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.75rem 0.5rem;
  outline: none;
  min-width: 0;
}

.item-input::placeholder {
  color: var(--text-secondary);
}

.mic-btn, .add-btn {
  background-color: var(--surface-hover);
  border: none;
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.add-btn {
  background-color: var(--accent-color);
}

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

.mic-btn:hover {
  background-color: var(--border-color);
}

.mic-btn.listening {
  background-color: #fee2e2;
  color: var(--danger-color);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Language Selector */
.lang-select {
  background-color: transparent;
  color: var(--text-secondary);
  border: none;
  outline: none;
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0.5rem;
}

.lang-select option {
  background-color: var(--surface-color);
  color: var(--text-primary);
}

/* List Area */
.list-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.category-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.category-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--border-color);
}

/* List Items */
.shopping-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background-color: var(--surface-color);
  padding: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.shopping-item.completed {
  opacity: 0.6;
}

.checkbox-container {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.checkbox-custom {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.shopping-item.completed .checkbox-custom {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

.check-icon {
  color: white;
  width: 14px;
  height: 14px;
  opacity: 0;
  transform: scale(0.5);
  transition: var(--transition);
}

.shopping-item.completed .check-icon {
  opacity: 1;
  transform: scale(1);
}

.item-text-container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.item-name {
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
}

.shopping-item.completed .item-name {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.item-quantity {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-full);
  transition: var(--transition);
}

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

/* Inline Editing Styles */
.shopping-item input.item-input {
    background: var(--surface);
    border: 1px solid var(--accent-primary);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    width: 100%;
}

.edit-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
}

.shopping-item .edit-btn-save, .list-item-btn .edit-btn-save {
    color: #22c55e;
    padding: 8px;
    border-radius: 50%;
    background: rgba(34, 197, 94, 0.15);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.shopping-item .edit-btn-cancel, .list-item-btn .edit-btn-cancel {
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 50%;
    background: var(--surface-hover);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

/* Ensure buttons look good on active (blue) background */
.list-item-btn.active .edit-btn-save {
    background: white;
    color: #22c55e;
}

.list-item-btn.active .edit-btn-cancel {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 1000;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--surface-color);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 400px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transform: scale(0.95);
  transition: var(--transition);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.5rem;
}

.sortable-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sortable-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem;
  background-color: var(--bg-color);
  border-radius: var(--radius-md);
  cursor: grab;
}

.sortable-item:active {
  cursor: grabbing;
}

/* Floating Action Button for Voice */
.floating-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border: none;
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-btn:active {
    transform: scale(0.9);
}

.floating-btn.listening {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.6);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

@media (max-width: 600px) {
    .floating-btn {
        display: flex; /* Show only on mobile */
    }
}