:root {
    --text-color: #192026;
    --accent-color: #215cff;
    --muted-color: #5f6b76;
    --border-color: #e3e8ef;
    --bg-color: #f7f9fc;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: inherit;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

a {
    color: var(--accent-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    width: min(1100px, 90%);
    margin: 0 auto;
    padding: 2rem 0;
}

.site-header,
.site-footer {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

.site-footer {
    border-top: 1px solid var(--border-color);
    border-bottom: none;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
}

.language-switcher a {
    margin-left: 0.5rem;
    font-size: 0.85rem;
    color: var(--muted-color);
}

.language-switcher a.active {
    color: var(--accent-color);
    font-weight: 600;
}

.breadcrumbs {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--muted-color);
}

.hero {
    padding: 2rem;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgb(15 23 42 / 6%);
    margin-bottom: 2rem;
}

.category-card,
.category,
.calculator-card,
.calculator-detail,
.about-page,
.error-page {
    background: #fff;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 15px 35px rgb(15 23 42 / 6%);
}

.calculator-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.calculator-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.related-calculators ul {
    list-style: none;
    padding: 0;
}

.related-calculators li {
    margin-bottom: 0.75rem;
}

.calculator-dates {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: var(--muted-color);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}