/* Core Reset & Theme Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Minimalist Top Navigation */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-bar .logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 24px;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--accent);
}

/* Master Layout Grid for Tools */
.tool-wrapper {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px;
}

.tool-header {
    margin-bottom: 32px;
    text-align: center;
}

.tool-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.tool-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Semantic SEO Content Styling */
.seo-content-block {
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}

.seo-content-block h2 {
    font-size: 1.4rem;
    color: var(--text-main);
    margin-top: 24px;
    margin-bottom: 12px;
}

.seo-content-block p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    font-size: 1rem;
}

.seo-content-block code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--accent);
}

/* Clean Footer */
.footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    background: #090d16;
}