/* CloudMonitor - Infrastructure Observability Platform */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --green: #22c55e;
    --red: #ef4444;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,.05), 0 4px 6px rgba(0,0,0,.04);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

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

/* Navigation */
.nav {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-brand svg { width: 28px; height: 28px; }
.nav-links {
    display: flex;
    gap: 4px;
    list-style: none;
    align-items: center;
}
.nav-links a {
    color: var(--gray-500);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    transition: all .15s;
    text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: var(--primary-light);
    text-decoration: none;
}
.nav-cta {
    background: var(--primary);
    color: #fff !important;
    padding: 7px 18px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background .15s;
}
.nav-cta:hover { background: var(--primary-dark); text-decoration: none !important; }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav { padding: 0 16px; }
}

/* Container */
.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* Hero */
.hero {
    text-align: center;
    padding: 80px 24px 60px;
}
.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}
.hero .highlight { color: var(--primary); }
.hero p {
    color: var(--gray-500);
    font-size: 1.15rem;
    max-width: 580px;
    margin: 0 auto 32px;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all .15s;
    border: none;
    text-decoration: none;
    line-height: 1.4;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--gray-300); }
.btn-outline:hover { border-color: var(--primary); background: var(--primary-light); }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

/* Cards */
.card {
    background: #fff;
    padding: 28px;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}
.card:hover { box-shadow: var(--shadow-md); }

/* Grid */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
}

/* Features section */
.features { padding: 0 24px 80px; max-width: 1080px; margin: 0 auto; }
.feature-card {
    background: #fff;
    padding: 28px;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}
.feature-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 1.3rem;
    color: var(--primary);
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 6px; font-weight: 700; }
.feature-card p { color: var(--gray-500); font-size: 0.9rem; line-height: 1.6; }

/* Sections */
.section {
    padding: 80px 0;
}
.section-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    margin-bottom: 8px;
}
.section-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}
.section-desc {
    color: var(--gray-500);
    font-size: 1.05rem;
    max-width: 600px;
    margin-bottom: 40px;
}
.section-alt { background: #fff; border-top: 1px solid var(--gray-200); border-bottom: 1px solid var(--gray-200); }

/* Status bar */
.status-bar {
    background: #fff;
    border-top: 1px solid var(--gray-200);
    padding: 12px 32px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--gray-500);
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }

/* Footer */
footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 48px 0 32px;
    margin-top: auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}
.footer-grid h4 { color: #fff; font-size: 0.85rem; margin-bottom: 14px; font-weight: 600; }
.footer-grid ul { list-style: none; }
.footer-grid ul li { margin-bottom: 8px; }
.footer-grid ul a { color: var(--gray-400); font-size: 0.85rem; }
.footer-grid ul a:hover { color: #fff; }
.footer-bottom {
    max-width: 1080px;
    margin: 40px auto 0;
    padding: 24px 24px 0;
    border-top: 1px solid var(--gray-700);
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Page header */
.page-header {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    padding: 60px 0;
    text-align: center;
}
.page-header h1 { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.5px; }
.page-header p { color: var(--gray-500); margin-top: 8px; font-size: 1.05rem; }

/* Content area */
.content {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px;
}
.content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 40px 0 12px;
    letter-spacing: -0.3px;
}
.content h2:first-child { margin-top: 0; }
.content h3 { font-size: 1.15rem; font-weight: 700; margin: 28px 0 8px; }
.content p { color: var(--gray-600); margin-bottom: 14px; line-height: 1.7; }
.content ul, .content ol { margin: 0 0 16px 20px; color: var(--gray-600); }
.content li { margin-bottom: 6px; line-height: 1.6; }
.content code {
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.88em;
    color: var(--primary-dark);
}
.content pre {
    background: var(--gray-900);
    color: #e2e8f0;
    padding: 16px 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 16px;
    font-size: 0.85rem;
    line-height: 1.6;
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
}
.pricing-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 32px;
    position: relative;
}
.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary), var(--shadow-lg);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}
.pricing-card h3 { font-size: 1.2rem; margin-bottom: 4px; }
.pricing-card .price { font-size: 2.5rem; font-weight: 800; margin: 16px 0; }
.pricing-card .price span { font-size: 0.9rem; color: var(--gray-400); font-weight: 400; }
.pricing-card ul { list-style: none; margin: 0 0 24px; }
.pricing-card ul li { padding: 6px 0; color: var(--gray-500); font-size: 0.9rem; display: flex; align-items: center; gap: 8px; }
.pricing-card ul li::before { content: "✓"; color: var(--green); font-weight: 700; }
.pricing-card .btn { width: 100%; justify-content: center; }
@media (max-width: 768px) {
    .pricing-grid { grid-template-columns: 1fr; }
}

/* Blog cards */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.blog-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 28px;
    transition: box-shadow .15s;
}
.blog-card:hover { box-shadow: var(--shadow-md); }
.blog-card .date { font-size: 0.8rem; color: var(--gray-400); }
.blog-card h3 { font-size: 1.15rem; margin: 8px 0; font-weight: 700; }
.blog-card p { color: var(--gray-500); font-size: 0.9rem; line-height: 1.6; }
.blog-card .tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 12px;
}
@media (max-width: 768px) {
    .blog-grid { grid-template-columns: 1fr; }
}

/* 404 */
.error-page {
    text-align: center;
    padding: 100px 24px;
    flex: 1;
}
.error-page .code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--gray-200);
    line-height: 1;
}
.error-page h2 { font-size: 1.5rem; margin: 16px 0 8px; }
.error-page p { color: var(--gray-500); margin-bottom: 24px; }

/* Docs layout */
.docs-layout {
    display: flex;
    gap: 40px;
    max-width: 1080px;
    margin: 0 auto;
    padding: 40px 24px;
}
.docs-sidebar {
    width: 220px;
    flex-shrink: 0;
    position: sticky;
    top: 80px;
    align-self: start;
}
.docs-sidebar h4 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray-400); margin-bottom: 10px; }
.docs-sidebar ul { list-style: none; }
.docs-sidebar ul li { margin-bottom: 2px; }
.docs-sidebar ul a {
    display: block;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.88rem;
    color: var(--gray-600);
    text-decoration: none;
}
.docs-sidebar ul a:hover,
.docs-sidebar ul a.active {
    background: var(--primary-light);
    color: var(--primary);
}
.docs-content { flex: 1; min-width: 0; }
.docs-content h2 { font-size: 1.5rem; font-weight: 700; margin: 36px 0 10px; }
.docs-content h2:first-child { margin-top: 0; }
.docs-content h3 { font-size: 1.1rem; font-weight: 700; margin: 24px 0 8px; }
.docs-content p { color: var(--gray-600); margin-bottom: 12px; line-height: 1.7; }
.docs-content ul { margin: 0 0 14px 20px; color: var(--gray-600); }
.docs-content li { margin-bottom: 4px; }
.docs-content .callout {
    background: var(--primary-light);
    border-left: 3px solid var(--primary);
    padding: 12px 16px;
    border-radius: 0 6px 6px 0;
    margin-bottom: 16px;
    font-size: 0.9rem;
    color: var(--gray-700);
}

@media (max-width: 768px) {
    .docs-layout { flex-direction: column; }
    .docs-sidebar { width: 100%; position: static; }
}

/* Contact form */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 0.9rem; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--gray-800);
    transition: border-color .15s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.form-group textarea { resize: vertical; min-height: 120px; }