/* Cyber Terminal Color System Mapping Architecture */
:root {
    --bg-base: #030712;
    --bg-surface: #0f172a;
    --bg-terminal: #020617;
    --border-color: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #06b6d4; /* Cyber Cyan */
    --accent-hover: #0891b2; /* Deep Node Blue */
    --accent-purple: #a855f7;
    --accent-orange: #f97316; /* Cyber Orange */
    --radius-main: 16px;
    --radius-pill: 9999px;
    --shadow-main: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

/* Base Resets & Layout Core */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Ambient Digital Grid Background Pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(6, 182, 212, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6, 182, 212, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -1;
}

/* Navigation System Layout */
.navbar {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 500;
    backdrop-filter: blur(8px);
    width: 100%;
}

.nav-left, .nav-right {
    flex: 1;
    display: flex;
    align-items: center;
}

.nav-left {
    gap: 1.25rem;
}

.nav-right {
    justify-content: flex-end;
}

.nav-center {
    flex: 2;
    display: flex;
    justify-content: center;
    max-width: 400px;
    width: 100%;
}

.btn-back {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: monospace;
    font-size: 0.85rem;
    letter-spacing: 1px;
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.85rem;
    border-radius: 6px;
    background-color: rgba(30, 41, 59, 0.5);
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-back:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background-color: rgba(6, 182, 212, 0.05);
}

.logo {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.search-box {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-base);
    color: var(--text-primary);
    outline: none;
    font-size: 0.85rem;
    width: 100%;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.search-box:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}
/* Workspaces Grid Layout Setup */
.layout-wrapper {
    max-width: 720px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex-grow: 1;
}

.posts-feed {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Structural Engine Elements (Cards) */
.blog-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-main);
    padding: 2rem;
    box-shadow: var(--shadow-main);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.category-tag {
    font-family: monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-pill);
}

/* Category Tag Tint Overrides */
.category-tag.tag-cyan { 
    color: var(--accent); 
    border: 1px solid rgba(6, 182, 212, 0.2); 
    background-color: rgba(6, 182, 212, 0.05); 
}

.category-tag.tag-purple { 
    color: var(--accent-purple); 
    border: 1px solid rgba(168, 85, 247, 0.2); 
    background-color: rgba(168, 85, 247, 0.05); 
}

.category-tag.tag-orange { 
    color: var(--accent-orange); 
    border: 1px solid rgba(249, 115, 22, 0.2); 
    background-color: rgba(249, 115, 22, 0.05); 
}

.reading-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.post-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    font-weight: 800;
    letter-spacing: -0.75px;
    color: var(--text-primary);
    line-height: 1.3;
}

.post-meta {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

.post-body p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-size: 1.025rem;
    line-height: 1.65;
}

.post-body p:last-child {
    margin-bottom: 0;
}
/* Interactive Playground Grid Flex Structure */
.interactive-zone {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
    width: 100%;
}

/* Module 1 Frame: Interactive Canvas Background Mask */
.matrix-canvas-wrapper {
    position: relative;
    height: 240px;
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-main);
    overflow: hidden;
    box-shadow: var(--shadow-main);
}

#matrix-rain-core {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Foreground Interface HUD layer */
.hud-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    align-items: flex-end;
    padding: 1.25rem;
    background: linear-gradient(180deg, transparent 40%, rgba(3, 7, 18, 0.85));
}

.hud-readout {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background-color: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 8px #22c55e;
    animation: beaconPulse 1.8s infinite ease-in-out;
}

@keyframes beaconPulse {
    0%, 100% { opacity: 0.3; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* Module 2 Frame: Micro-Terminal Interface Shell */
.terminal-container {
    background-color: var(--bg-terminal);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-main);
    text-align: left;
}

.terminal-bar {
    background-color: rgba(15, 23, 42, 0.8);
    border-bottom: 1px solid var(--border-color);
    padding: 0.65rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.window-controls {
    display: flex;
    gap: 0.45rem;
}

.window-controls span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #eab308; }
.dot-green { background-color: #22c55e; }

.terminal-tab-title {
    font-family: monospace;
    font-size: 0.7rem;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.terminal-status-metric {
    font-family: monospace;
    font-size: 0.65rem;
    color: var(--accent);
    font-weight: 700;
}

.terminal-screen {
    padding: 1.25rem;
    height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    scroll-behavior: smooth;
}

.terminal-screen::-webkit-scrollbar { width: 6px; }
.terminal-screen::-webkit-scrollbar-track { background: transparent; }
.terminal-screen::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

.terminal-log-line {
    font-family: monospace;
    font-size: 0.8rem;
    color: #e2e8f0;
    line-height: 1.4;
    white-space: pre-wrap;
}

.terminal-log-line.response-output {
    color: var(--text-secondary);
    padding-left: 0.5rem;
    border-left: 2px solid rgba(6, 182, 212, 0.3);
}

.cmd-text { color: var(--accent); font-weight: 700; }
.err-text { color: #f87171; }
.suc-text { color: #22c55e; }

.terminal-input-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background-color: rgba(15, 23, 42, 0.4);
    border-top: 1px solid rgba(30, 41, 59, 0.5);
}

.terminal-prompt {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--accent-purple);
    white-space: nowrap;
}

#terminal-input {
    background: transparent;
    border: none;
    outline: none;
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-primary);
    width: 100%;
}

/* Custom Empty State Fallback Alert Styling */
.terminal-empty-msg {
    text-align: center; 
    color: var(--text-secondary); 
    font-family: monospace; 
    font-size: 0.9rem;
    background-color: var(--bg-surface);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-main);
    padding: 2.5rem;
}

/* Central Primary Interface Back Link Button */
.btn-enter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    padding: 0.9rem 2rem;
    border-radius: 8px;
    width: 100%;
    margin-top: 2.5rem;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.btn-outline:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

/* Global Footer Telemetry Structuring */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    margin-top: auto;
    width: 100%;
    background-color: var(--bg-surface);
}

.footer-telemetry {
    font-family: monospace;
    font-size: 0.72rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-align: center;
    opacity: 0.6;
}

/* Responsive Mobile Scaling Overrides */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column !important;
        height: auto !important; /* Forces header to grow tall */
        gap: 0.75rem !important;
        padding: 1rem !important;
    }

    .nav-left, .nav-center {
        flex: none !important;
        width: 100% !important;
        display: flex !important;
        justify-content: center !important;
    }

    .search-box {
        width: 100% !important;
    }

    .nav-right { 
        display: none !important;
    }
    
    .layout-wrapper {
        margin-top: 40px !important; /* Pushes content down extra to clear the tall header */
    }
}