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

:root {
    --primary: #1976d2;
    --primary-dark: #1565c0;
    --bg: #f5f5f5;
    --card: #ffffff;
    --text: #1a1a1a;
    --text-light: #666;
    --border: #e0e0e0;
    --green: #4caf50;
    --red: #e53935;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

button {
    cursor: pointer;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

button.primary {
    background: var(--primary);
    color: white;
}

button.primary:hover { background: var(--primary-dark); }
button.primary:disabled { background: #aaa; cursor: default; }

input, textarea {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

input:focus, textarea:focus { border-color: var(--primary); }

.hidden { display: none !important; }