/* Blueprint Engineering Drafting Style - Technical Grid Layout */
@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Noto+Sans+SC:wght@300;400;700;900&display=swap');

:root {
    --blueprint-bg: #0a2558;
    --blueprint-grid: rgba(255, 255, 255, 0.15);
    --blueprint-line: #ffffff;
    --blueprint-accent: #64ffda;
    --blueprint-text: #e0f7fa;
    --blueprint-muted: #80deea;
    --font-mono: 'Space Mono', monospace;
    --font-cn: 'Noto Sans SC', sans-serif;
}

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

body {
    background-color: var(--blueprint-bg);
    color: var(--blueprint-text);
    font-family: var(--font-cn);
    line-height: 1.6;
    overflow-x: hidden;
    /* Blueprint Grid Background */
    background-image: 
        linear-gradient(var(--blueprint-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--blueprint-grid) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center top;
}

h1, h2, h3, h4, .font-mono { font-family: var(--font-mono); }
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; height: auto; display: block; filter: sepia(100%) hue-rotate(190deg) saturate(300%) contrast(80%); } /* Make images look like blueprints */

/* Technical Box with Crosshairs */
.tech-box {
    position: relative;
    border: 2px solid var(--blueprint-line);
    background: rgba(10, 37, 88, 0.8);
    backdrop-filter: blur(5px);
}
.tech-box::before, .tech-box::after {
    content: ''; position: absolute; width: 10px; height: 10px;
}
.tech-box::before { top: -6px; left: -6px; border-top: 2px solid var(--blueprint-accent); border-left: 2px solid var(--blueprint-accent); }
.tech-box::after { bottom: -6px; right: -6px; border-bottom: 2px solid var(--blueprint-accent); border-right: 2px solid var(--blueprint-accent); }

/* 1. Drafting Board Layout */
.drafting-board {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* 2. Tool Palette (Sidebar) */
.tool-palette {
    position: fixed;
    top: 0; left: 0; width: 280px; height: 100vh;
    border-right: 2px solid var(--blueprint-line);
    background: rgba(10, 37, 88, 0.95);
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    z-index: 100;
}

.tp-stamp {
    border: 3px solid var(--blueprint-line);
    padding: 15px;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}
.tp-stamp::before { content: 'APPROVED'; position: absolute; top: -10px; right: -10px; background: var(--blueprint-bg); color: var(--blueprint-accent); font-size: 0.7rem; font-family: var(--font-mono); padding: 0 5px; border: 1px solid var(--blueprint-accent); transform: rotate(15deg); }
.tp-brand { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--blueprint-line); }

.tp-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex: 1;
}
.tp-nav a {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--blueprint-muted);
    padding: 10px 15px;
    border: 1px dashed transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}
.tp-nav a::before { content: '>'; color: var(--blueprint-accent); opacity: 0; transition: 0.3s; }
.tp-nav a:hover, .tp-nav a.active { color: var(--blueprint-line); border-color: var(--blueprint-line); background: rgba(255,255,255,0.05); }
.tp-nav a:hover::before, .tp-nav a.active::before { opacity: 1; }

.tp-controls { margin-top: auto; display: flex; flex-direction: column; gap: 15px; }
.tp-lang { font-family: var(--font-mono); font-size: 0.85rem; text-align: center; color: var(--blueprint-muted); }
.btn-draft {
    background: transparent;
    color: var(--blueprint-accent);
    border: 2px solid var(--blueprint-accent);
    padding: 12px;
    text-align: center;
    font-family: var(--font-mono);
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: 0.3s;
}
.btn-draft:hover { background: var(--blueprint-accent); color: var(--blueprint-bg); }

/* 3. Main Canvas */
.main-canvas {
    grid-column: 2;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--blueprint-accent);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-label::before, .section-label::after { content: ''; height: 1px; background: var(--blueprint-accent); flex: 1; }

/* 4. Schematic Hero */
.hero-schematic {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 40px;
}
.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
    font-weight: 900;
    text-transform: uppercase;
}
.hero-text p { font-size: 1.1rem; color: var(--blueprint-muted); margin-bottom: 40px; }
.hero-actions { display: flex; gap: 20px; margin-bottom: 30px; }
.btn-solid { background: var(--blueprint-line); color: var(--blueprint-bg); border: 2px solid var(--blueprint-line); padding: 12px 30px; font-family: var(--font-mono); font-weight: 700; }
.btn-solid:hover { background: transparent; color: var(--blueprint-line); }

.trust-specs { display: flex; gap: 20px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--blueprint-muted); }
.trust-specs span { border: 1px dashed var(--blueprint-muted); padding: 5px 10px; }

.hero-visual { position: relative; padding: 20px; border: 1px solid var(--blueprint-line); }
.hero-visual::before { content: 'FIG 1.0 - CORE ARCHITECTURE'; position: absolute; top: -10px; left: 20px; background: var(--blueprint-bg); padding: 0 10px; font-family: var(--font-mono); font-size: 0.8rem; }

/* 5. Data Matrix (Stats) */
.data-matrix {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.matrix-cell {
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--blueprint-line);
    background: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.03) 10px, rgba(255,255,255,0.03) 20px);
}
.matrix-cell h3 { font-size: 2.5rem; color: var(--blueprint-accent); margin-bottom: 5px; }
.matrix-cell p { font-family: var(--font-mono); font-size: 0.85rem; color: var(--blueprint-muted); text-transform: uppercase; }

/* 6. Module Blueprints (Features) */
.module-blueprints {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.blueprint-card {
    padding: 30px;
    display: flex;
    flex-direction: column;
}
.bc-header { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.8rem; color: var(--blueprint-accent); border-bottom: 1px solid var(--blueprint-line); padding-bottom: 10px; margin-bottom: 20px; }
.blueprint-card img { width: 100%; height: 150px; object-fit: cover; border: 1px solid var(--blueprint-muted); margin-bottom: 20px; }
.blueprint-card h3 { font-size: 1.4rem; margin-bottom: 15px; }
.blueprint-card p { color: var(--blueprint-muted); font-size: 0.95rem; }

/* 7. Coordinate Nodes */
.coordinate-nodes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 30px;
}
.coord-point {
    border: 1px solid var(--blueprint-line);
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
}
.coord-point:hover { background: var(--blueprint-line); color: var(--blueprint-bg); }
.cp-city { font-weight: 700; }
.cp-ping { font-size: 0.85rem; }

/* 8. Inspection Reports (Reviews) */
.inspection-reports {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.report-card {
    padding: 30px;
    border-left: 4px solid var(--blueprint-accent);
}
.rc-meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--blueprint-muted); margin-bottom: 15px; border-bottom: 1px dashed var(--blueprint-muted); padding-bottom: 5px; }
.rc-stars { color: var(--blueprint-line); margin-bottom: 15px; letter-spacing: 2px; }
.rc-text { font-size: 1rem; margin-bottom: 20px; }
.rc-author { font-family: var(--font-mono); font-weight: 700; color: var(--blueprint-accent); }

/* 9. Resource Allocation (Pricing) */
.allocation-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.alloc-plan {
    padding: 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
}
.alloc-plan.pro {
    background: var(--blueprint-line);
    color: var(--blueprint-bg);
}
.alloc-plan.pro .ap-name, .alloc-plan.pro .ap-price, .alloc-plan.pro .ap-features li { color: var(--blueprint-bg); border-color: var(--blueprint-bg); }
.alloc-plan.pro .btn-draft { border-color: var(--blueprint-bg); color: var(--blueprint-bg); }
.alloc-plan.pro .btn-draft:hover { background: var(--blueprint-bg); color: var(--blueprint-line); }

.ap-name { font-family: var(--font-mono); font-size: 1.2rem; margin-bottom: 20px; border-bottom: 1px solid var(--blueprint-line); padding-bottom: 10px; }
.ap-price { font-family: var(--font-mono); font-size: 3rem; font-weight: 700; margin-bottom: 30px; }
.ap-price span { font-size: 1rem; font-weight: 400; }
.ap-features { list-style: none; text-align: left; margin-bottom: 40px; flex: 1; }
.ap-features li { padding: 10px 0; border-bottom: 1px dashed var(--blueprint-muted); font-size: 0.95rem; }
.ap-features li::before { content: '[+]'; font-family: var(--font-mono); margin-right: 10px; }

/* 10. Troubleshooting Manual (FAQ) & Footer */
.manual-faq { padding: 40px; }
.manual-item { margin-bottom: 20px; }
.manual-q { font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--blueprint-accent); }
.manual-q::before { content: 'ERR_'; color: var(--blueprint-muted); }
.manual-a { color: var(--blueprint-muted); font-size: 0.95rem; padding-left: 20px; border-left: 2px solid var(--blueprint-line); }

.blueprint-footer {
    margin-top: 60px;
    border-top: 4px double var(--blueprint-line);
    padding-top: 40px;
}
.foot-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}
.foot-brand { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; margin-bottom: 15px; }
.foot-desc { color: var(--blueprint-muted); font-size: 0.9rem; }
.foot-col h4 { font-family: var(--font-mono); margin-bottom: 20px; border-bottom: 1px solid var(--blueprint-line); display: inline-block; padding-bottom: 5px; }
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 10px; font-family: var(--font-mono); font-size: 0.9rem; }
.foot-col a { color: var(--blueprint-muted); }
.foot-col a:hover { color: var(--blueprint-accent); }
.foot-copy { margin-top: 40px; text-align: center; font-family: var(--font-mono); font-size: 0.8rem; color: var(--blueprint-muted); border-top: 1px solid var(--blueprint-line); padding-top: 20px; }

/* Subpages */
.sub-header { padding: 60px 40px; text-align: center; }
.sub-header h1 { font-size: 3rem; margin-bottom: 15px; }
.sub-header p { font-family: var(--font-mono); color: var(--blueprint-muted); }

.dl-matrix { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; padding: 0 40px 80px; }
.dl-cell { padding: 40px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.dl-icon { font-size: 3rem; margin-bottom: 20px; }
.dl-cell h3 { font-family: var(--font-mono); font-size: 1.5rem; margin-bottom: 10px; }
.dl-cell p { color: var(--blueprint-muted); margin-bottom: 30px; font-size: 0.9rem; }

.help-manual { display: grid; grid-template-columns: 250px 1fr; gap: 40px; padding: 0 40px 80px; }
.help-index { position: sticky; top: 40px; display: flex; flex-direction: column; gap: 10px; }
.help-index a { font-family: var(--font-mono); padding: 10px; border: 1px solid var(--blueprint-line); color: var(--blueprint-muted); font-size: 0.9rem; }
.help-index a.active, .help-index a:hover { background: var(--blueprint-line); color: var(--blueprint-bg); }
.help-section { padding: 40px; margin-bottom: 30px; }
.help-section h3 { font-family: var(--font-mono); font-size: 1.5rem; color: var(--blueprint-accent); border-bottom: 1px solid var(--blueprint-line); padding-bottom: 10px; margin-bottom: 20px; }
.help-section p, .help-section li { color: var(--blueprint-muted); margin-bottom: 15px; font-size: 0.95rem; }
.help-section ul { padding-left: 20px; }

/* Responsive */
@media (max-width: 1024px) {
    .drafting-board { grid-template-columns: 1fr; }
    .tool-palette { width: 100%; height: auto; position: static; flex-direction: row; align-items: center; justify-content: space-between; padding: 20px; border-right: none; border-bottom: 2px solid var(--blueprint-line); }
    .tp-stamp { margin-bottom: 0; padding: 10px; }
    .tp-nav { flex-direction: row; flex: 0; }
    .tp-nav a { border: none; padding: 5px 10px; }
    .tp-controls { margin-top: 0; flex-direction: row; align-items: center; }
    .main-canvas { grid-column: 1; padding: 30px 20px; }
    .hero-schematic { grid-template-columns: 1fr; }
    .data-matrix, .module-blueprints, .inspection-reports, .allocation-grid { grid-template-columns: repeat(2, 1fr); }
    .foot-grid { grid-template-columns: 1fr 1fr; }
    .help-manual { grid-template-columns: 1fr; }
    .help-index { position: static; flex-direction: row; flex-wrap: wrap; }
}
@media (max-width: 768px) {
    .tp-nav { display: none; }
    .hero-text h1 { font-size: 2.5rem; }
    .data-matrix, .module-blueprints, .inspection-reports, .allocation-grid, .dl-matrix { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: 1fr; }
    .trust-specs { flex-wrap: wrap; }
}