:root{--color-primary: var(--theme-primary, #1E3A5F);--color-secondary: var(--theme-secondary, #4A90D9);--color-accent: var(--theme-accent, #F5A623);--color-background: var(--theme-background, #F8FAFC)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:#f5f5f5;color:#333}button{cursor:pointer;border:none;border-radius:8px;padding:12px 24px;font-size:16px;font-weight:600;transition:opacity .2s}button:hover{opacity:.85}button:disabled{opacity:.5;cursor:not-allowed}