:root {
    --bg-color: #1a1d21;
    --surface-color: #24282f;
    --primary-color: #3a7cfd;
    --primary-hover-color: #5891fd;
    --text-color: #e0e0e0;
    --text-secondary-color: #a0a0a0;
    --border-color: #3a414c;
    --error-bg-color: #5c1a20;
    --error-text-color: #f8d7da;
    --error-border-color: #a04040;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
}