/* RankZio Modern SaaS Design System & CSS Variables */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #0f172a;
    --accent: #10b981;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.85);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-light: #1e293b;
    --secondary: #f8fafc;
    --accent: #34d399;
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --bg-nav: rgba(30, 41, 59, 0.85);
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    color: var(--primary-hover);
}

/* Header & Nav */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 24px;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--secondary);
    letter-spacing: -0.5px;
}

.brand-logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-link {
    color: var(--text-main);
    font-weight: 500;
    font-size: 15px;
}

.nav-link:hover {
    color: var(--primary);
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Layout Containers */
.main-wrapper {
    flex: 1;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 24px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 48px 20px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-card) 100%);
    border-radius: var(--radius);
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.hero h1 {
    font-size: 42px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto 28px;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 16px 20px 16px 48px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 30px;
    background: var(--bg-card);
    color: var(--text-main);
    box-shadow: var(--shadow-md);
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

/* Grid Layouts */
.section-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

.tool-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}

.tool-card p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
    flex: 1;
}

.tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 14px;
    color: var(--primary);
}

/* Tool View Workspace Layout */
.tool-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 32px;
}

@media (max-width: 992px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }
}

.workspace-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-main);
    color: var(--text-main);
    font-size: 15px;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-submit {
    background: var(--primary);
    color: #ffffff;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-submit:hover {
    background: var(--primary-hover);
}

/* Result Box */
.result-box {
    margin-top: 24px;
    padding: 24px;
    background: var(--primary-light);
    border: 1px solid var(--primary);
    border-radius: 10px;
    display: none;
}

.result-box.active {
    display: block;
}

.result-box pre {
    white-space: pre-wrap;
    word-break: break-word;
    font-family: monospace;
    font-size: 14px;
}

/* SEO Content & FAQ Accordion */
.seo-content-section {
    line-height: 1.8;
    color: var(--text-main);
}

.seo-content-section h2 {
    font-size: 24px;
    margin: 28px 0 14px;
    color: var(--secondary);
}

.seo-content-section p {
    margin-bottom: 16px;
    color: var(--text-muted);
}

.seo-content-section ul, .seo-content-section ol {
    margin: 0 0 20px 24px;
    color: var(--text-muted);
}

.faq-accordion {
    margin-top: 32px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    background: var(--bg-card);
    overflow: hidden;
}

.faq-question {
    padding: 16px 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 0 20px 16px;
    color: var(--text-muted);
    font-size: 14px;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Ad Placements */
.ad-container {
    margin: 24px 0;
    text-align: center;
    overflow: hidden;
}

/* Footer */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 48px 24px 24px;
    margin-top: auto;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-main);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 14px;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-muted);
}