/* CSS Variables for Light/Dark Theme */
:root {
  /* Light theme colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --border-primary: #e5e7eb;
  --border-secondary: #d1d5db;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
  
  /* Accent colors */
  --accent-blue: #2563eb;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
  
  /* Status colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
}

[data-theme="dark"] {
  /* Dark theme colors */
  --bg-primary: #1f2937;
  --bg-secondary: #374151;
  --bg-tertiary: #4b5563;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --border-primary: #4b5563;
  --border-secondary: #6b7280;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-lg: rgba(0, 0, 0, 0.4);
  
  /* Accent colors remain the same */
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;
}

/* Base styles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme toggle button */
.theme-toggle {
  background: var(--bg-secondary);
  border: 2px solid var(--border-primary);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-blue);
}

/* Common component styles */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  box-shadow: 0 4px 12px var(--shadow);
  transition: all 0.3s ease;
}

.button {
  background: var(--accent-blue);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.button:hover {
  background: var(--accent-blue);
  opacity: 0.9;
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.input {
  background: var(--bg-primary);
  border: 2px solid var(--border-primary);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 1rem;
  transition: all 0.2s ease;
}

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

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

/* Modal styles */
.modal {
  background: rgba(0, 0, 0, 0.5);
}

.modal-content {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  box-shadow: 0 20px 40px var(--shadow-lg);
}

/* Progress bars */
.progress-bar {
  background: var(--bg-tertiary);
}

.progress-fill {
  background: var(--accent-blue);
}

/* Status indicators */
.success {
  color: var(--success);
}

.warning {
  color: var(--warning);
}

.error {
  color: var(--error);
}

.info {
  color: var(--info);
}