:root {
    --bg: #f3f5f9;
    --surface: #ffffff;
    --text: #1f2937;
    --muted: #64748b;
    --border: #e5e7eb;
    --accent: #c62828;
    --shadow: 0 6px 20px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    min-height: 100vh;
    background: linear-gradient(180deg, #fbfcfe 0%, var(--bg) 100%);
    color: var(--text);
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 15px;
}

header .container::after {
    content: "Fox Gaming Guide";
    color: #0f172a;
    font-size: 20px;
    font-weight: 800;
}

.logo {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

main {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 15px 24px;
}

.tab-links {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    padding: 15px;
    border-radius: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.tab-links a {
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
}

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

.iframe-container {
    min-height: 600px;
    padding: 20px;
    border-radius: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

h1 {
    margin-bottom: 15px;
    color: var(--text);
    font-size: 22px;
    font-weight: 800;
    text-align: left;
}

p {
    margin: 18px 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 768px) {
    header .container::after {
        font-size: 18px;
    }

    .tab-links {
        flex-wrap: wrap;
    }
}