:root {
    --bg-primary: #fff;
    --bg-secondary: #f0f1f3;
    --bg-hover: #e8eaef;
    --text: #1a1d21;
    --text-secondary: #555;
    --text-muted: #888;
    --border: #e0e2e5;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc2626;
    --page-max-width: 1280px;
    --section-padding-desktop: 80px 24px;
    --section-padding-tablet: 48px 24px;
    --section-padding-mobile: 32px 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg-secondary);
    overflow-x: hidden; /* Voorkom horizontale scroll bij responsive */
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}

.btn-outline:hover {
    background: var(--bg-hover);
}

.btn-outline.is-active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.85rem;
}