/* =========================================
           1. CORE VARIABLES & THEME
           ========================================= */
        :root {
            /* DAY MODE */
            --bg-color: #f0f4f8;
            --bg-pattern: 
                linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
            --bg-size: 40px 40px;
            
            --safety-yellow: #fbbf24;
            --concrete-grey: #334155;
            --text-dark: #0f172a;
            --text-light: #64748b;
            
            --glass-bg: rgba(255, 255, 255, 0.9);
            --glass-border: rgba(255, 255, 255, 0.6);
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            
            --cable-color: #cbd5e1;
            --card-glow: rgba(251, 191, 36, 0.4);
            
            --panel-bg: #ffffff;
            --panel-text: #334155;
        }

        /* NIGHT MODE */
        body.dark-mode {
            --bg-color: #0b1120; 
            --bg-pattern: 
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
            
            --safety-yellow: #fbbf24; 
            --concrete-grey: #e2e8f0; 
            --text-dark: #f8fafc;
            --text-light: #94a3b8; 
            
            --glass-bg: rgba(15, 23, 42, 0.85);
            --glass-border: rgba(255, 255, 255, 0.1);
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            
            --cable-color: #1e293b;
            --card-glow: rgba(6, 182, 212, 0.6);
            
            --panel-bg: #0f172a;
            --panel-text: #94a3b8;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        
        body { 
            background-color: var(--bg-color); 
            background-image: var(--bg-pattern);
            background-size: var(--bg-size);
            color: var(--text-dark); 
            font-family: 'Plus Jakarta Sans', sans-serif;
            min-height: 100vh;
            overflow-x: hidden; 
            transition: background 0.8s ease;
        }

        /* =========================================
           2. HEADER BAR (NEW OPAQUE STYLE)
           ========================================= */
        
        /* The Solid Bar itself */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; height: 100px;
            background-color: var(--bg-color);
            border-bottom: 4px solid var(--safety-yellow);
            z-index: 85; /* Below Sidebar (90), Above Content */
            transition: background 0.8s ease;
        }

        /* BRAND (Top Left of Content) */
        .brand { 
            position: fixed; top: 2.2rem; left: 22%; /* Right of Sidebar */
            z-index: 100;
            font-size: 1.5rem; font-weight: 800; 
            color: var(--concrete-grey); 
            text-transform: uppercase; 
            letter-spacing: 3px; 
            cursor: pointer; user-select: none;
        }

        /* RETURN LINK (Top Right, Left of Lamp) */
        .back-link { 
            position: fixed; top: 2.5rem; right: 90px; 
            z-index: 100;
            text-decoration: none; color: var(--text-light); 
            font-weight: 600; font-size: 0.85rem; letter-spacing: 0.5px;
            transition: 0.3s;
            text-transform: uppercase;
        }
        .back-link:hover { color: var(--safety-yellow); }

        /* LIGHT SWITCH (Far Right) */
        .lamp-container {
            position: fixed; top: 0; right: 2rem; 
            z-index: 1000; display: flex; flex-direction: column; align-items: center; pointer-events: auto;
        }
        .wire { width: 2px; height: 60px; background: #475569; }
        .bulb { width: 40px; height: 40px; background: #cbd5e1; border-radius: 50%; border: 2px solid #475569; position: relative; z-index: 2; cursor: pointer; transition: 0.3s; }
        .pull-string { width: 1px; height: 60px; background: #94a3b8; cursor: pointer; transition: height 0.2s; }
        .knob { width: 8px; height: 14px; background: #64748b; border-radius: 4px; position: absolute; bottom: -14px; left: 50%; transform: translateX(-50%); }
        .lamp-container:active .pull-string { height: 85px; }
        body.dark-mode .bulb { background: #fbbf24; box-shadow: 0 0 20px #fbbf24; }

        /* =========================================
           3. SYSTEM MONITOR (LEFT SIDE PANEL)
           ========================================= */
        .sys-monitor {
            position: fixed;
            top: 0; left: 0;
            width: 20%; 
            height: 100vh;
            background: var(--panel-bg);
            border-right: 1px solid var(--glass-border);
            padding: 2rem;
            display: flex; flex-direction: column;
            z-index: 90; /* Sits ON TOP of the header bar */
            box-shadow: 5px 0 30px rgba(0,0,0,0.05);
            transition: background 0.5s ease;
        }

        .sys-header {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.8rem; font-weight: bold;
            color: var(--text-light);
            border-bottom: 1px solid var(--glass-border);
            padding-bottom: 1rem; margin-bottom: 2rem;
            display: flex; justify-content: space-between;
            margin-top: 1rem; /* Push down slightly to align with header visual */
        }
        .sys-status { color: #10b981; animation: blink 2s infinite; }

        .sys-list { list-style: none; flex-grow: 1; overflow-y: auto; }
        .sys-item {
            padding: 0.8rem; margin-bottom: 0.5rem; border-radius: 6px;
            cursor: pointer; transition: 0.2s; font-size: 0.9rem;
            color: var(--panel-text); border: 1px solid transparent;
            display: flex; justify-content: space-between;
        }
        .sys-item:hover { background: rgba(0,0,0,0.05); }
        .sys-item.active {
            background: rgba(251, 191, 36, 0.1);
            border-color: var(--safety-yellow);
            color: var(--text-dark);
            font-weight: bold;
        }
        body.dark-mode .sys-item.active { background: rgba(6, 182, 212, 0.1); border-color: #06b6d4; color: #fff; }

        .sys-details {
            margin-top: auto;
            background: rgba(0,0,0,0.03);
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--glass-border);
        }
        .detail-label { font-family: 'JetBrains Mono'; font-size: 0.65rem; color: var(--text-light); display: block; margin-bottom: 5px; }
        .detail-value { font-size: 1.1rem; font-weight: 800; color: var(--concrete-grey); margin-bottom: 1rem; }
        
        .tech-specs-list {
            list-style: none; padding: 0;
            font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; color: var(--text-light);
        }
        .tech-specs-list li { margin-bottom: 5px; display: flex; }
        .tech-specs-list li::before { content: '>'; color: var(--safety-yellow); margin-right: 8px; }

        /* =========================================
           4. MAIN CONTENT
           ========================================= */
        .hero {
            height: 90vh;
            display: flex; flex-direction: column; justify-content: center; align-items: center;
            text-align: center;
            padding: 0 10% 0 30%;
            position: relative;
            z-index: 1;
            margin-top: 100px; /* Offset for fixed header */
        }
        
        h1 { 
            font-size: 4rem; margin-bottom: 1rem; line-height: 1.1; font-weight: 800;
            background: linear-gradient(135deg, var(--concrete-grey) 30%, var(--safety-yellow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0px 4px 10px rgba(0,0,0,0.05);
        }
        body.dark-mode h1 {
            background: linear-gradient(135deg, #e2e8f0 30%, var(--safety-yellow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .subtitle { font-size: 1.25rem; color: var(--text-light); max-width: 600px; }

        /* =========================================
           5. THE MAP LAYOUT
           ========================================= */
        .map-container {
            position: relative;
            width: 80%;
            margin-left: 20%; 
            height: 4200px; 
            overflow: hidden;
            padding-bottom: 200px;
        }

        .cable-svg {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            pointer-events: none; z-index: 0;
        }
        .cable-path {
            fill: none; stroke: var(--cable-color); stroke-width: 2; stroke-dasharray: 10;
            transition: stroke 0.8s ease;
        }

        .card-wrapper {
            position: absolute;
            width: 400px;
            transition: all 0.5s ease;
        }

        #c-safety    { top: 5%;  left: 5%; }
        #c-logistics { top: 15%; right: 15%; }
        #c-oracle    { top: 25%; left: 10%; }
        #c-quality   { top: 35%; left: 50%; transform: translateX(-50%); }
        #c-eco       { top: 45%; right: 5%; }
        #c-bio       { top: 55%; left: 5%; }
        #c-twin      { top: 65%; right: 20%; }
        #c-reality   { top: 75%; left: 15%; }
        #c-vortex    { top: 85%; left: 45%; }
        #c-rover     { top: 92%; left: 55%; } 

        .module-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            padding: 2.5rem;
            border-radius: 12px;
            border-left: 6px solid var(--safety-yellow);
            box-shadow: var(--shadow);
            cursor: pointer;
            transition: 0.3s;
            position: relative;
        }
        .module-card:hover {
            transform: translateY(-5px) scale(1.02);
            box-shadow: 0 20px 50px rgba(0,0,0,0.1), 0 0 40px var(--card-glow);
            z-index: 10;
            background: rgba(255,255,255,0.98);
        }
        body.dark-mode .module-card:hover { background: rgba(30, 41, 59, 0.98); }

        .module-id { 
            font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; 
            color: var(--text-light); display: block; margin-bottom: 0.8rem; 
            border-bottom: 1px solid rgba(0,0,0,0.1); padding-bottom: 0.5rem;
        }
        
        .module-card h3 { font-size: 1.6rem; color: var(--concrete-grey); margin-bottom: 1rem; font-weight: 800; }
        .module-card p { font-size: 1.1rem; color: var(--text-dark); line-height: 1.6; margin-bottom: 0; font-weight: 500; }

        .hw-card { background: var(--concrete-grey) !important; border-left-color: #000; }
        body.dark-mode .hw-card { background: #1e293b !important; border-left-color: #fbbf24; }
        .hw-card h3, .hw-card p, .hw-card .module-id { color: white !important; }

        /* =========================================
           6. FORM & FOOTER
           ========================================= */
        .form-section { padding: 4rem 10% 6rem 20%; max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
        .form-container {
            background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur));
            border: 1px solid var(--glass-border); padding: 3rem; border-radius: 12px;
            box-shadow: var(--shadow); border-top: 6px solid var(--concrete-grey);
            transition: background 1.2s ease;
        }
        body.dark-mode .form-container { border-top-color: var(--safety-yellow); }
        
        .form-group { margin-bottom: 1.5rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 700; font-size: 0.8rem; color: var(--text-light); }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%; padding: 0.8rem; border: 1px solid #ddd; border-radius: 6px;
            background: rgba(255,255,255,0.8); font-family: inherit; font-size: 1rem; outline: none; transition: 0.2s;
        }
        body.dark-mode .form-group input, body.dark-mode .form-group textarea, body.dark-mode .form-group select { 
            background: rgba(15, 23, 42, 0.5); border-color: #334155; color: white; 
        }
        .form-group input:focus { border-color: var(--safety-yellow); }
        .submit-btn {
            background: var(--safety-yellow); color: var(--btn-text); border: none;
            padding: 1.2rem 2rem; font-weight: 800; text-transform: uppercase; cursor: pointer;
            width: 100%; border-radius: 6px; transition: 0.3s;
        }
        .submit-btn:hover { background: #eab308; transform: translateY(-2px); }
        
        footer { 
            text-align: center; padding: 4rem 2rem 2rem 22%;
            background: rgba(255,255,255,0.5); color: var(--text-light); font-size: 0.9rem; 
            position: relative; z-index: 2; border-top: 1px solid var(--glass-border);
        }
        body.dark-mode footer { background: rgba(15, 23, 42, 0.5); }
        
        .social-links { display: flex; justify-content: center; gap: 2rem; margin-bottom: 2rem; }
        .social-link { color: var(--concrete-grey); text-decoration: none; font-weight: 800; text-transform: uppercase; font-size: 0.8rem; transition: 0.3s; }
        .social-link:hover { color: var(--safety-yellow); }
        body.dark-mode .social-link { color: var(--text-light); }
        body.dark-mode .social-link:hover { color: var(--safety-yellow); }

        /* =========================================
           7. GAME OVERLAY
           ========================================= */
        #gameCanvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 9999; background: #0f172a; display: none; cursor: none; }
        #gameUI { position: fixed; top: 20px; left: 20px; z-index: 10000; color: #fbbf24; font-family: 'Courier New', monospace; font-weight: bold; font-size: 1.2rem; display: none; pointer-events: none; }
        #gameOverlay { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 10000; text-align: center; color: #fff; font-family: 'Courier New', monospace; display: none; }
        #gameOverlay h2 { color: #fbbf24; margin-bottom: 10px; font-size: 2rem;}
        .active-game #gameCanvas, .active-game #gameUI, .active-game #gameOverlay { display: block; }

        @media (max-width: 1000px) {
            .sys-monitor { display: none; }
            .map-container { margin-left: 0; width: 100%; height: auto; padding-bottom: 4rem; }
            .hero { padding: 6rem 5% 4rem; }
            .brand { position: relative; left: auto; top: auto; margin-bottom: 1rem; }
            .back-link { position: relative; right: auto; top: auto; display: block; text-align: center; margin-bottom: 1rem; }
            .form-section { padding: 4rem 5%; }
            footer { padding: 3rem 5%; }
            .card-wrapper { position: relative; width: 90%; margin: 3rem auto; top: auto !important; left: auto !important; transform: none !important; }
            .cable-svg { display: none; }
            .site-header { display: none; } /* Hide fixed header on mobile for space */
        }

    .construct-launch {
    position: relative;
    width: 100%;
    padding: 6rem 4rem 6rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--bg-color);
    border-bottom: 4px solid var(--safety-yellow);
    z-index: 2;
}

.cl-grid-bg {
    position: absolute; inset: 0;
    background-image: var(--bg-pattern);
    background-size: var(--bg-size);
    opacity: 0.5;
    pointer-events: none;
}

.cl-eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem; letter-spacing: 0.3em;
    color: var(--text-light); text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 1rem;
    position: relative; z-index: 1;
}
.cl-eyebrow::before, .cl-eyebrow::after {
    content: ''; width: 40px; height: 2px;
    background: var(--safety-yellow);
}

.cl-title {
    font-size: clamp(3rem, 8vw, 7rem);
    font-weight: 800; line-height: 1.0;
    text-transform: uppercase; letter-spacing: 2px;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--concrete-grey) 30%, var(--safety-yellow) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    position: relative; z-index: 1;
}
body.dark-mode .cl-title {
    background: linear-gradient(135deg, #e2e8f0 30%, var(--safety-yellow) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.cl-sub {
    font-size: 1.1rem; color: var(--text-light);
    max-width: 560px; line-height: 1.7; margin-bottom: 3rem;
    position: relative; z-index: 1;
}
.cl-sub strong { color: var(--text-dark); font-weight: 700; }

/* Countdown */
.cl-countdown {
    display: flex; align-items: center; gap: 0;
    margin-bottom: 3rem;
    position: relative; z-index: 1;
}
.cl-block {
    display: flex; flex-direction: column; align-items: center;
    padding: 1.8rem 2.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--safety-yellow);
    box-shadow: var(--shadow);
    min-width: 100px;
    transition: box-shadow 0.3s ease;
}
.cl-block:hover {
    box-shadow: 0 8px 32px var(--card-glow);
}
.cl-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700; line-height: 1;
    color: var(--safety-yellow);
}
.cl-num.flip { animation: clFlip 0.3s ease; }
@keyframes clFlip {
    0%   { transform: translateY(0);   opacity: 1; }
    49%  { transform: translateY(-8px); opacity: 0; }
    51%  { transform: translateY(8px);  opacity: 0; }
    100% { transform: translateY(0);   opacity: 1; }
}
.cl-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.55rem; letter-spacing: 0.2em;
    color: var(--text-light); text-transform: uppercase; margin-top: 0.4rem;
}
.cl-sep {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem; font-weight: 700;
    color: var(--safety-yellow); opacity: 0.3;
    padding: 0 0.4rem; align-self: flex-start; margin-top: 1rem;
    animation: clSepPulse 1s ease-in-out infinite;
}
@keyframes clSepPulse {
    0%, 100% { opacity: 0.3; }
    50%       { opacity: 0.8; }
}

/* Free Tier Badge */
.cl-free-tier {
    display: flex; align-items: center; gap: 2rem;
    padding: 1.2rem 2.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--safety-yellow);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    position: relative; z-index: 1;
}
.cl-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem; font-weight: 700;
    color: var(--safety-yellow); white-space: nowrap;
    text-transform: uppercase; letter-spacing: 2px;
}
.cl-tier-headline {
    font-size: 0.75rem; letter-spacing: 0.15em;
    color: var(--text-dark); text-transform: uppercase;
    font-weight: 700; margin-bottom: 0.25rem;
}
.cl-tier-sub {
    font-size: 0.65rem; letter-spacing: 0.1em;
    color: var(--text-light); text-transform: uppercase;
}

/* Target date */
.cl-target {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem; letter-spacing: 0.25em;
    color: var(--text-light); text-transform: uppercase;
    display: flex; align-items: center; gap: 1rem;
    position: relative; z-index: 1;
}
.cl-target-line { width: 30px; height: 2px; background: var(--safety-yellow); }
.cl-target span { color: var(--safety-yellow); }

@media (max-width: 768px) {
    .construct-launch { padding: 4rem 1.5rem; }
    .cl-countdown { flex-wrap: nowrap; }
    .cl-block { padding: 1.2rem 1rem; min-width: 70px; }
    .cl-sep { font-size: 1.8rem; }
    .cl-free-tier { flex-direction: column; gap: 1rem; text-align: center; }