/* RealCalculators - Clean & Functional Design */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@400;600&display=swap');

:root {
    --text-primary: #1a1a1a;
    --text-secondary: #555;
    --text-muted: #777;
    --link-color: #1a73e8;
    --link-hover: #0d47a1;
    --bg-page: #fafafa;
    --bg-content: #fff;
    --bg-accent: #f0f4f8;
    --border-color: #d0d7de;
    --border-light: #e8e8e8;
    --accent-financial: #2e7d32;
    --accent-health: #c62828;
    --accent-math: #1565c0;
    --accent-other: #6a1b9a;
}

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

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.65;
    color: var(--text-primary);
    background: var(--bg-page);
}

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

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Header */
.header {
    background: var(--bg-content);
    border-bottom: 2px solid var(--border-color);
    padding: 12px 20px;
}

.header-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #1565c0, #1a73e8);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: #fff;
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.logo-text span {
    font-weight: 400;
    color: var(--text-secondary);
}

/* Hero */
.hero {
    background: var(--bg-content);
    padding: 32px 20px;
    border-bottom: 1px solid var(--border-light);
}

.hero h1 {
    max-width: 1100px;
    margin: 0 auto 8px;
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.hero p {
    max-width: 1100px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 16px;
}

/* Main Content */
.main {
    max-width: 1100px;
    margin: 24px auto;
    padding: 0 20px;
}

/* Category Grid */
.categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* Category Card */
.category-card {
    background: var(--bg-content);
    border: 1px solid var(--border-color);
}

.category-card h2 {
    font-size: 15px;
    font-weight: 600;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.financial h2 {
    border-left: 3px solid var(--accent-financial);
}

.health h2 {
    border-left: 3px solid var(--accent-health);
}

.math h2 {
    border-left: 3px solid var(--accent-math);
}

.other h2 {
    border-left: 3px solid var(--accent-other);
}

.category-icon {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

.category-card>p {
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-muted);
    background: var(--bg-accent);
    border-bottom: 1px solid var(--border-light);
}

.calculator-list {
    list-style: none;
    padding: 12px 16px;
    columns: 2;
    column-gap: 16px;
}

.calculator-list li {
    padding: 4px 0;
    break-inside: avoid;
}

.calculator-list li a {
    font-size: 14px;
    display: inline-block;
}

.view-all {
    display: block;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    background: var(--bg-accent);
    border-top: 1px solid var(--border-light);
}

.financial .view-all {
    color: var(--accent-financial);
}

.health .view-all {
    color: var(--accent-health);
}

.math .view-all {
    color: var(--accent-math);
}

.other .view-all {
    color: var(--accent-other);
}

/* Footer */
.footer {
    max-width: 1100px;
    margin: 40px auto 24px;
    padding: 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-light);
}

.footer a {
    color: var(--text-secondary);
    margin: 0 12px;
}

.footer a:hover {
    color: var(--link-color);
}

/* Responsive */
@media (max-width: 700px) {
    .categories {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 24px;
    }

    .calculator-list {
        columns: 1;
    }
}

/* Print */
@media print {

    .header,
    .footer {
        display: none;
    }

    body {
        background: #fff;
    }
}