/* Precision Grid Laboratory Style - Strict Bento UI */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700;800&family=Inter:wght@300;400;600;800&display=swap');

:root {
    --lab-bg: #e4e4e7; /* Light gray background outside grid */
    --lab-line: #18181b; /* Strict black lines */
    --lab-panel: #ffffff; /* White panels */
    --lab-panel-alt: #f4f4f5; /* Slightly off-white for contrast */
    --lab-accent: #2563eb; /* Technical blue */
    --lab-text: #18181b;
    --lab-muted: #71717a;
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, sans-serif;
}

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

body {
    background-color: var(--lab-bg);
    color: var(--lab-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    padding: 2vw;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

h1, h2, h3, h4 { font-weight: 800; letter-spacing: -0.02em; }
a { text-decoration: none; color: inherit; transition: 0.2s; }
img { max-width: 100%; height: auto; display: block; filter: grayscale(100%) contrast(120%); mix-blend-mode: multiply; }
img:hover { filter: grayscale(0%) contrast(100%); mix-blend-mode: normal; }

/* The Master Grid */
.lab-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1px; /* The gap IS the grid line */
    background-color: var(--lab-line);
    border: 1px solid var(--lab-line);
    width: 100%;
    max-width: 1600px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

/* Base Panel Style */
.lab-panel {
    background-color: var(--lab-panel);
    position: relative;
    padding: 40px;
    overflow: hidden;
}
.lab-panel.alt { background-color: var(--lab-panel-alt); }

/* Technical Labels */
.lab-panel::before {
    content: attr(data-label);
    position: absolute;
    top: 0;
    left: 0;
    background: var(--lab-line);
    color: var(--lab-panel);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 10;
}

/* Buttons */
.btn-lab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--lab-line);
    color: var(--lab-panel);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 12px 24px;
    border: 1px solid var(--lab-line);
    text-transform: uppercase;
    cursor: pointer;
}
.btn-lab:hover { background: var(--lab-accent); border-color: var(--lab-accent); color: #fff; }
.btn-outline { background: transparent; color: var(--lab-line); }
.btn-outline:hover { background: var(--lab-line); color: var(--lab-panel); }

/* --- Specific Panels --- */

/* 1. Navigation */
.nav-panel {
    grid-column: span 12;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--lab-panel);
}
.nav-brand { font-size: 1.5rem; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.nav-brand::after { content: 'MAC_OS_EDITION'; font-family: var(--font-mono); font-size: 0.6rem; background: var(--lab-line); color: var(--lab-panel); padding: 2px 6px; border-radius: 10px; }
.nav-links { display: flex; gap: 30px; font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700; }
.nav-links a:hover { color: var(--lab-accent); }
.nav-actions { display: flex; gap: 15px; align-items: center; }
.nav-lang { font-family: var(--font-mono); font-size: 0.75rem; color: var(--lab-muted); }

/* 2. Hero Section */
.hero-panel {
    grid-column: span 8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px;
    background: radial-gradient(circle at 90% 90%, var(--lab-panel-alt) 0%, var(--lab-panel) 50%);
}
.hero-title { font-size: 4.5rem; line-height: 1; margin-bottom: 20px; letter-spacing: -0.04em; }
.hero-desc { font-size: 1.25rem; color: var(--lab-muted); max-width: 80%; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 20px; margin-bottom: 40px; }
.trust-badges { display: flex; gap: 20px; font-family: var(--font-mono); font-size: 0.75rem; color: var(--lab-muted); }
.trust-badges span { display: flex; align-items: center; gap: 5px; }
.trust-badges span::before { content: ''; display: inline-block; width: 6px; height: 6px; background: var(--lab-accent); border-radius: 50%; }

/* 3. Data Metrics (Stacked on right) */
.data-container {
    grid-column: span 4;
    display: grid;
    grid-template-rows: repeat(4, 1fr);
    gap: 1px;
    background: var(--lab-line);
}
.data-cell {
    background: var(--lab-panel);
    padding: 30px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}
.data-val { font-family: var(--font-mono); font-size: 3rem; font-weight: 800; color: var(--lab-line); line-height: 1; margin-bottom: 5px; }
.data-val.accent { color: var(--lab-accent); }
.data-lbl { font-size: 0.9rem; color: var(--lab-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

/* 4. Features (3 columns) */
.feature-panel {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
}
.feat-img { width: 100%; height: 200px; object-fit: cover; border: 1px solid var(--lab-line); margin-bottom: 30px; }
.feat-title { font-size: 1.5rem; margin-bottom: 15px; }
.feat-desc { color: var(--lab-muted); font-size: 0.95rem; }

/* 5. Nodes Map & Reviews (Split) */
.node-panel {
    grid-column: span 7;
    background: var(--lab-panel-alt);
}
.node-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 20px; }
.node-item { display: flex; justify-content: space-between; padding: 15px; border: 1px solid var(--lab-line); background: var(--lab-panel); font-family: var(--font-mono); font-size: 0.85rem; }
.node-item .ping { color: var(--lab-accent); font-weight: 700; }

.review-panel {
    grid-column: span 5;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.review-card { padding: 20px; border: 1px solid var(--lab-line); }
.rev-stars { color: var(--lab-line); font-size: 1.2rem; margin-bottom: 10px; letter-spacing: 2px; }
.rev-text { font-size: 0.95rem; margin-bottom: 15px; font-style: italic; }
.rev-author { font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }

/* 6. Pricing (3 columns) */
.price-panel {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.price-panel.recommended {
    background: var(--lab-line);
    color: var(--lab-panel);
}
.price-panel.recommended::before { background: var(--lab-accent); color: #fff; }
.price-panel.recommended .price-val, .price-panel.recommended .price-desc, .price-panel.recommended .price-features li { color: var(--lab-panel); border-color: rgba(255,255,255,0.2); }
.price-panel.recommended .btn-lab { background: var(--lab-panel); color: var(--lab-line); }
.price-panel.recommended .btn-lab:hover { background: var(--lab-accent); color: #fff; border-color: var(--lab-accent); }

.price-title { font-family: var(--font-mono); font-size: 1.2rem; margin-bottom: 20px; }
.price-val { font-size: 4rem; font-weight: 800; line-height: 1; margin-bottom: 10px; }
.price-val span { font-size: 1rem; font-weight: 400; color: var(--lab-muted); }
.price-desc { font-size: 0.9rem; color: var(--lab-muted); margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--lab-line); width: 100%; }
.price-features { list-style: none; width: 100%; text-align: left; margin-bottom: 40px; flex: 1; }
.price-features li { padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,0.1); font-size: 0.95rem; display: flex; align-items: center; gap: 10px; }
.price-features li::before { content: '→'; font-family: var(--font-mono); color: var(--lab-accent); font-weight: 700; }

/* 7. FAQ */
.faq-panel {
    grid-column: span 12;
    background: var(--lab-panel-alt);
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}
.faq-header h2 { font-size: 3rem; margin-bottom: 20px; }
.faq-header p { color: var(--lab-muted); }
.faq-list { display: flex; flex-direction: column; gap: 30px; }
.faq-item { border-bottom: 1px solid var(--lab-line); padding-bottom: 30px; }
.faq-q { font-size: 1.2rem; font-weight: 700; margin-bottom: 15px; display: flex; gap: 15px; }
.faq-q::before { content: 'Q.'; font-family: var(--font-mono); color: var(--lab-accent); }
.faq-a { color: var(--lab-muted); font-size: 0.95rem; padding-left: 35px; line-height: 1.8; }

/* 8. Footer */
.footer-panel {
    grid-column: span 12;
    padding: 60px 40px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.foot-brand { font-size: 1.5rem; font-weight: 800; margin-bottom: 20px; }
.foot-desc { color: var(--lab-muted); font-size: 0.9rem; max-width: 300px; }
.foot-col h4 { font-family: var(--font-mono); font-size: 0.85rem; margin-bottom: 25px; text-transform: uppercase; }
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 12px; }
.foot-col a { color: var(--lab-muted); font-size: 0.95rem; }
.foot-col a:hover { color: var(--lab-line); padding-left: 5px; }
.foot-bottom { grid-column: span 4; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--lab-line); display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.75rem; color: var(--lab-muted); }

/* Subpages Overrides */
.sub-hero { grid-column: span 12; text-align: center; padding: 80px 40px; background: var(--lab-panel-alt); }
.sub-hero h1 { font-size: 4rem; margin-bottom: 20px; }
.sub-hero p { font-size: 1.2rem; color: var(--lab-muted); max-width: 600px; margin: 0 auto; }

.dl-grid { grid-column: span 12; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--lab-line); padding: 0; }
.dl-card { background: var(--lab-panel); padding: 40px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.dl-icon { font-size: 3rem; margin-bottom: 20px; font-family: var(--font-mono); }
.dl-card h3 { font-size: 1.5rem; margin-bottom: 10px; }
.dl-card p { color: var(--lab-muted); font-size: 0.9rem; margin-bottom: 30px; }

.help-grid { grid-column: span 12; display: grid; grid-template-columns: 300px 1fr; gap: 1px; background: var(--lab-line); padding: 0; }
.help-sidebar { background: var(--lab-panel-alt); padding: 40px; }
.help-nav { display: flex; flex-direction: column; gap: 10px; position: sticky; top: 40px; }
.help-nav a { padding: 12px 20px; border: 1px solid var(--lab-line); font-family: var(--font-mono); font-size: 0.85rem; font-weight: 700; }
.help-nav a.active, .help-nav a:hover { background: var(--lab-line); color: var(--lab-panel); }
.help-content { background: var(--lab-panel); padding: 60px; }
.help-section { margin-bottom: 60px; }
.help-section h3 { font-size: 2rem; margin-bottom: 30px; padding-bottom: 15px; border-bottom: 2px solid var(--lab-line); }
.help-section h4 { font-size: 1.2rem; margin-bottom: 15px; margin-top: 30px; }
.help-section p, .help-section li { color: var(--lab-muted); margin-bottom: 15px; line-height: 1.8; }
.help-section ul { padding-left: 20px; margin-bottom: 15px; }

/* Responsive */
@media (max-width: 1200px) {
    .hero-panel { grid-column: span 12; padding: 40px; }
    .data-container { grid-column: span 12; grid-template-columns: repeat(4, 1fr); grid-template-rows: 1fr; }
    .node-panel, .review-panel { grid-column: span 12; }
}
@media (max-width: 992px) {
    .feature-panel, .price-panel { grid-column: span 6; }
    .faq-panel { grid-template-columns: 1fr; gap: 30px; }
    .footer-panel { grid-template-columns: 1fr 1fr; }
    .dl-grid { grid-template-columns: repeat(2, 1fr); }
    .help-grid { grid-template-columns: 1fr; }
    .help-sidebar { padding: 20px; }
    .help-nav { position: static; flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 768px) {
    body { padding: 10px; }
    .nav-links { display: none; }
    .hero-title { font-size: 3rem; }
    .data-container { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(2, 1fr); }
    .feature-panel, .price-panel { grid-column: span 12; }
    .footer-panel { grid-template-columns: 1fr; }
    .dl-grid { grid-template-columns: 1fr; }
    .node-grid { grid-template-columns: 1fr; }
}