/* CSS-переменные для светлой/тёмной темы */
:root {
    --background: #f5f7fb;
    --card-background: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6c6c6c;
    --accent: #2688eb;
    --accent-hover: #1a6ec9;
    --border: #e1e3e6;
    --error: #e64646;
    --success: #4bb34b;
    --header-bg: #ffffff;
}

.dark-theme {
    --background: #121212;
    --card-background: #1e1e1e;
    --text-primary: #e1e1e1;
    --text-secondary: #8a8a8a;
    --border: #363636;
    --header-bg: #1e1e1e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.5;
}