:root{--bg-primary: #fafafa;--bg-secondary: #ffffff;--bg-hero: linear-gradient(135deg, #1a237e 0%, #283593 100%);--text-primary: #333333;--text-secondary: #666666;--text-muted: #999999;--border-color: #e0e0e0;--card-shadow: 0 2px 8px rgba(0, 0, 0, .08);--card-hover-shadow: 0 8px 24px rgba(0, 0, 0, .12);--header-bg: #1a237e;--header-text: #ffffff;--accent: #ff8f00;--accent-hover: #ff6f00;--input-bg: #ffffff;--input-border: #ddd;--category-bg: #ffffff;--category-border: #ddd;--category-active-bg: #1a237e;--category-active-text: #ffffff;--footer-bg: #f5f5f5;--footer-text: #666666}[data-theme=dark]{--bg-primary: #121212;--bg-secondary: #1e1e1e;--bg-hero: linear-gradient(135deg, #0d1b4a 0%, #1a237e 100%);--text-primary: #e0e0e0;--text-secondary: #aaaaaa;--text-muted: #777777;--border-color: #333333;--card-shadow: 0 2px 8px rgba(0, 0, 0, .3);--card-hover-shadow: 0 8px 24px rgba(0, 0, 0, .4);--header-bg: #0d1b4a;--header-text: #ffffff;--accent: #ffab40;--accent-hover: #ff8f00;--input-bg: #2a2a2a;--input-border: #444444;--category-bg: #2a2a2a;--category-border: #444444;--category-active-bg: #3949ab;--category-active-text: #ffffff;--footer-bg: #1a1a1a;--footer-text: #888888}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Roboto,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;transition:background-color .3s ease,color .3s ease}a{text-decoration:none;color:inherit}input,select,textarea{background:var(--input-bg);color:var(--text-primary);border:1px solid var(--input-border)}