/* ==========================================================================
   ZELOCT BRAND MASTER SYSTEM STYLESHEET
   --------------------------------------------------------------------------
   - Design System: HSL values, Deep Black, Slate Grey, Electric Neon Cyan
   - Typography: Outfit (Headers), Inter (Body), Share Tech Mono (Telemetry)
   - Feel: Premium, cybernetic, structured, glassmorphic, interactive
   ========================================================================== */

:root {
    --bg-deep-black: #000000;
    --bg-dark-slate: #0b0f19;
    --border-slate: #1e293b;
    --border-slate-glow: #334155;
    
    --color-white: #ffffff;
    --color-cyan: #00f0ff;
    --color-cyan-glow: rgba(0, 240, 255, 0.45);
    --color-text-muted: #64748b;
    --color-text-body: #cbd5e1;
    
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
    
    --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-deep-black);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 16px;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-deep-black);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Symmetrical Tech Grid Background */
.tech-grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(30, 41, 59, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 41, 59, 0.2) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
    pointer-events: none;
    z-index: 1;
}

.tech-grid-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 20%, rgba(0, 0, 0, 0.8) 80%);
    pointer-events: none;
}

/* Symmetrical Skan Axes */
.symmetrical-axis-x {
    position: fixed;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.15) 30%, rgba(0, 240, 255, 0.15) 70%, transparent);
    z-index: 2;
    pointer-events: none;
}

.symmetrical-axis-y {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(0, 240, 255, 0.15) 30%, rgba(0, 240, 255, 0.15) 70%, transparent);
    z-index: 2;
    pointer-events: none;
}

/* Custom Interactive Cursor Tracker */
.custom-cursor-tracker {
    position: fixed;
    width: 20px;
    height: 20px;
    border: 1px solid var(--color-cyan);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    mix-blend-mode: difference;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.1s ease, height 0.1s ease;
    opacity: 0;
}

.custom-cursor-tracker::after {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--color-cyan);
    border-radius: 50%;
}

.custom-cursor-tracker .coord-val {
    position: absolute;
    top: 25px;
    left: 20px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-cyan);
    background-color: rgba(0, 0, 0, 0.75);
    padding: 2px 6px;
    border: 1px solid var(--border-slate);
    white-space: nowrap;
    border-radius: 2px;
}

/* Typography Utility Classes */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
    font-weight: 600;
}

.font-mono {
    font-family: var(--font-mono) !important;
}

.cyan-txt {
    color: var(--color-cyan) !important;
}

.white-txt {
    color: var(--color-white) !important;
}

.text-muted {
    color: var(--color-text-muted) !important;
}

.cyan-bg {
    background-color: var(--color-cyan) !important;
}

.gradient-text {
    background: linear-gradient(90deg, #ffffff 0%, var(--color-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* System Header */
.system-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    border-bottom: 1px solid var(--border-slate);
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    height: 100%;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-symbol {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-white);
    letter-spacing: 0.1em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-item {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: var(--transition-smooth);
    position: relative;
    padding: 6px 0;
}

.nav-num {
    color: var(--color-cyan);
    margin-right: 4px;
    font-size: 0.75rem;
}

.nav-item:hover, .nav-item.active {
    color: var(--color-white);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-cyan);
    transition: var(--transition-smooth);
}

.nav-item:hover::after, .nav-item.active::after {
    width: 100%;
}

.nav-btn {
    border: 1px solid var(--color-cyan);
    padding: 8px 16px;
    border-radius: 2px;
    background-color: rgba(0, 240, 255, 0.03);
}

.nav-btn::after {
    display: none;
}

.nav-btn:hover {
    background-color: var(--color-cyan);
    color: var(--bg-deep-black) !important;
    box-shadow: 0 0 15px var(--color-cyan-glow);
}

.nav-btn:hover .nav-num {
    color: var(--bg-deep-black);
}

.system-status-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border-left: 1px solid var(--border-slate);
    padding-left: 24px;
}

.status-dot-pulse {
    width: 6px;
    height: 6px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    position: relative;
}

.status-dot-pulse::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--color-cyan);
    animation: status-ping 1.5s infinite;
}

@keyframes status-ping {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(3); opacity: 0; }
}

.status-divider {
    color: var(--border-slate);
}

.status-metric {
    color: var(--color-text-muted);
}

/* Sections Styling */
section {
    position: relative;
    padding: 120px 0;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.section-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

.section-badge {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-cyan);
    letter-spacing: 0.1em;
    margin-bottom: 24px;
    display: inline-block;
    border-bottom: 1px solid var(--color-cyan);
    padding-bottom: 4px;
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-white);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-subtitle {
    color: var(--color-text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin-bottom: 48px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 14px 28px;
    border-radius: 2px;
    text-decoration: none;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--color-cyan);
    color: var(--bg-deep-black);
    border: 1px solid var(--color-cyan);
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.15);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-cyan);
    box-shadow: 0 0 25px var(--color-cyan-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid var(--border-slate);
}

.btn-secondary:hover {
    border-color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.02);
}

/* ==========================================================================
   LAYER 01: HERO SECTION
   ========================================================================== */
.hero-section {
    padding-top: 150px;
}

.hero-layout {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-info {
    max-width: 680px;
}

.system-tag {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.tag-accent {
    color: var(--color-cyan);
}

.tag-version {
    color: var(--color-text-muted);
    background-color: rgba(30, 41, 59, 0.3);
    padding: 2px 8px;
    border: 1px solid var(--border-slate);
    border-radius: 2px;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 900;
    letter-spacing: -0.03em;
}

.title-sub {
    display: block;
    font-size: 1.25rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    letter-spacing: 0.15em;
    margin-bottom: 12px;
}

.hero-desc {
    color: var(--color-text-body);
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Hero Face Mesh Visualizer Card */
.hero-visualizer-card {
    background-color: rgba(11, 15, 25, 0.65);
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(15px);
}

.card-header-bar {
    height: 40px;
    background-color: rgba(30, 41, 59, 0.3);
    border-bottom: 1px solid var(--border-slate);
    display: flex;
    align-items: center;
    padding: 0 16px;
    justify-content: space-between;
}

.header-dots {
    display: flex;
    gap: 8px;
}

.header-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.header-dots .red { background-color: #ef4444; }
.header-dots .yellow { background-color: #f59e0b; }
.header-dots .green { background-color: #10b981; }

.header-title-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.header-status {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-cyan);
    border: 1px solid rgba(0, 240, 255, 0.3);
    padding: 1px 6px;
    border-radius: 2px;
    background-color: rgba(0, 240, 255, 0.05);
}

.visualizer-content {
    padding: 30px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.svg-visualizer-container {
    width: 320px;
    height: 320px;
    position: relative;
    border: 1px dashed var(--border-slate);
    border-radius: 2px;
    overflow: hidden;
}

/* Face scan animations */
#laser-line {
    animation: laser-sweep 4s infinite linear;
}

@keyframes laser-sweep {
    0% { y1: 20; y2: 20; opacity: 0; }
    5% { opacity: 1; }
    95% { opacity: 1; }
    100% { y1: 380; y2: 380; opacity: 0; }
}

.node-pulse {
    transform-origin: center;
    animation: node-glowing 2s infinite ease-in-out;
}

.node-pulse:nth-child(even) {
    animation-delay: 1s;
}

@keyframes node-glowing {
    0%, 100% { r: 3.5; fill-opacity: 0.8; }
    50% { r: 5.5; fill-opacity: 1; filter: drop-shadow(0 0 4px var(--color-cyan)); }
}

/* Telemetry box */
.telemetry-box {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 12px 16px;
    margin-top: 20px;
}

.telemetry-row {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-bottom: 6px;
}

.telemetry-row:last-child {
    margin-bottom: 0;
}

.tel-label {
    color: var(--color-text-muted);
}

.tel-value {
    color: var(--color-text-body);
}

.interactive-sliders {
    width: 100%;
    margin-top: 16px;
    border-top: 1px solid var(--border-slate);
    padding-top: 16px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.slider-group:last-child {
    margin-bottom: 0;
}

.slider-group label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.slider-group input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 3px;
    background: var(--border-slate);
    border-radius: 1px;
    outline: none;
}

.slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-cyan);
    cursor: pointer;
    box-shadow: 0 0 6px var(--color-cyan);
    transition: transform 0.1s ease;
}

.slider-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.section-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    pointer-events: none;
}

.scroll-arrow {
    animation: arrow-bounce 2s infinite;
}

@keyframes arrow-bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-5px); }
    60% { transform: translateY(-2px); }
}

/* ==========================================================================
   LAYER 02: ABOUT US (PHILOSOPHY)
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 80px;
    align-items: center;
}

.about-visual {
    position: relative;
    border-right: 1px solid var(--border-slate);
    padding-right: 60px;
}

.huge-brand-title {
    font-size: 6.5rem;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.08);
    line-height: 0.9;
    letter-spacing: 0.05em;
    margin-bottom: 24px;
}

.grid-coordinate-block {
    background-color: rgba(11, 15, 25, 0.45);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 24px;
    position: relative;
    overflow: hidden;
}

.matrix-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.matrix-elem {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 6px 10px;
    border: 1px solid rgba(30, 41, 59, 0.5);
    border-radius: 2px;
    text-align: center;
    transition: var(--transition-smooth);
}

.matrix-elem:hover {
    color: var(--color-cyan);
    border-color: var(--color-cyan);
    background-color: rgba(0, 240, 255, 0.02);
}

.tech-wireframe-deco {
    margin-top: 20px;
    height: 100px;
    border-top: 1px dashed var(--border-slate);
    position: relative;
}

.tech-wireframe-deco .line-x {
    position: absolute;
    left: 40%;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(0, 240, 255, 0.2);
}

.tech-wireframe-deco .circle-point {
    position: absolute;
    left: 40%;
    top: 40%;
    width: 6px;
    height: 6px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px var(--color-cyan);
}

.tech-wireframe-deco .tech-angle {
    position: absolute;
    right: 10px;
    bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-cyan);
}

.about-content {
    max-width: 620px;
}

.about-subheading {
    font-size: 1.1rem;
    font-family: var(--font-mono);
    color: var(--color-cyan);
    letter-spacing: 0.15em;
    margin-bottom: 24px;
}

.cold-statement {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.statement-para {
    color: var(--color-text-body);
    font-size: 1.1rem;
    line-height: 1.8;
    font-weight: 300;
}

.statement-paraHighlight {
    color: var(--color-white);
    font-size: 1.2rem;
    line-height: 1.8;
    font-weight: 400;
    border-left: 2px solid var(--color-cyan);
    padding-left: 20px;
}

.tech-signature {
    margin-top: 50px;
}

.signature-line {
    width: 80px;
    height: 1px;
    background-color: var(--color-cyan);
    margin-bottom: 12px;
}

.signature-meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   LAYER 03: CORE SERVICES
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background-color: rgba(11, 15, 25, 0.45);
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 480px;
    transition: var(--transition-slow);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.service-card:hover {
    border-color: var(--color-cyan);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 240, 255, 0.05);
    background-color: rgba(11, 15, 25, 0.75);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-num {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px var(--color-text-muted);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
    transition: var(--transition-smooth);
}

.service-card:hover .service-num {
    color: var(--color-cyan);
    -webkit-text-stroke: 1px var(--color-cyan);
    opacity: 0.8;
}

.service-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-cyan);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.service-name {
    font-size: 1.45rem;
    line-height: 1.3;
    margin-bottom: 16px;
    font-weight: 800;
}

.service-sub {
    font-size: 0.9rem;
    font-family: var(--font-mono);
    font-weight: 400;
    color: var(--color-text-muted);
    display: block;
    margin-top: 4px;
}

.service-desc {
    color: var(--color-text-body);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 30px;
    font-weight: 300;
}

.service-interactive-console {
    margin-top: auto;
    background-color: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 14px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    position: relative;
    overflow: hidden;
}

.console-tab {
    position: absolute;
    top: 0;
    right: 12px;
    background-color: var(--border-slate);
    color: var(--color-text-body);
    font-size: 0.6rem;
    padding: 2px 6px;
    border-bottom-left-radius: 2px;
    border-bottom-right-radius: 2px;
}

.console-lines {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.line-item {
    color: var(--color-text-muted);
    white-space: nowrap;
}

/* Service 2 Mini grid map representation */
.matrix-map-visualization {
    height: 80px;
    border: 1px dashed var(--border-slate);
    border-radius: 2px;
    position: relative;
    background-color: rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.grid-dot {
    position: absolute;
    width: 6px;
    height: 6px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px var(--color-cyan);
}

.point-active {
    animation: grid-point-ping 1.5s infinite;
}

@keyframes grid-point-ping {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    50% { transform: translate(-50%, -50%) scale(1.8); opacity: 1; }
}

.grid-line-h {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--border-slate);
}

.grid-line-v {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--border-slate);
}

.axis-lbl-y {
    position: absolute;
    left: 6px;
    top: 6px;
    font-size: 0.55rem;
    color: var(--color-text-muted);
}

.axis-lbl-x {
    position: absolute;
    right: 6px;
    bottom: 6px;
    font-size: 0.55rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   LAYER 04: SYSTEM DASHBOARD (PORTFOLIO)
   ========================================================================== */
.dashboard-section {
    background-color: rgba(0, 0, 0, 0.5);
}

.section-title-area {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.section-title-area .section-title {
    margin-bottom: 0;
}

.dashboard-wrapper {
    background-color: rgba(11, 15, 25, 0.65);
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    overflow: hidden;
    backdrop-filter: blur(15px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

/* Tabs */
.dashboard-tabs {
    display: flex;
    background-color: rgba(30, 41, 59, 0.25);
    border-bottom: 1px solid var(--border-slate);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    border-right: 1px solid var(--border-slate);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    transition: var(--transition-smooth);
    text-align: left;
}

.tab-btn:hover {
    background-color: rgba(30, 41, 59, 0.15);
    color: var(--color-white);
}

.tab-btn.active {
    background-color: rgba(11, 15, 25, 0.85);
    color: var(--color-cyan);
    border-bottom: 2px solid var(--color-cyan);
}

.tab-icon {
    font-size: 0.95rem;
}

.tab-name {
    font-weight: 600;
}

.tab-file {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-left: auto;
    opacity: 0.8;
}

.tab-btn.active .tab-file {
    color: var(--color-white);
}

/* Panel Body */
.dashboard-panel {
    display: flex;
    flex-direction: column;
}

.panel-header {
    height: 38px;
    background-color: rgba(30, 41, 59, 0.1);
    border-bottom: 1px solid var(--border-slate);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.file-path {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.panel-actions {
    display: flex;
    gap: 12px;
}

.btn-indicator {
    font-size: 0.7rem;
    border: 1px solid var(--border-slate);
    padding: 2px 8px;
    border-radius: 2px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.code-editor-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    min-height: 400px;
}

.line-numbers {
    background-color: rgba(0, 0, 0, 0.2);
    border-right: 1px solid var(--border-slate);
    padding: 20px 0;
    width: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    user-select: none;
}

.line-numbers span {
    line-height: 1.8;
    height: 24px;
}

.code-viewport {
    padding: 20px 24px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background-color: rgba(0, 0, 0, 0.3);
}

.code-viewport pre {
    margin: 0;
}

.code-viewport code {
    line-height: 1.8;
    display: block;
}

/* Syntax Highlighting */
.json-key { color: #f43f5e; }
.json-val { color: #10b981; }
.json-num { color: #f59e0b; }
.py-keyword { color: #00f0ff; }
.py-def { color: #3b82f6; }
.py-comment { color: #64748b; font-style: italic; }
.py-val { color: #e11d48; }

/* Code Editor Preview Panel */
.dashboard-preview-panel {
    border-left: 1px solid var(--border-slate);
    background-color: rgba(11, 15, 25, 0.95);
    display: flex;
    flex-direction: column;
}

.preview-title {
    height: 38px;
    border-bottom: 1px solid var(--border-slate);
    display: flex;
    align-items: center;
    padding: 0 20px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-cyan);
    letter-spacing: 0.05em;
    background-color: rgba(30, 41, 59, 0.1);
}

.preview-visual {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 30px;
}

/* Node matrix graph mini */
.node-graph-mini {
    height: 180px;
    border: 1px dashed var(--border-slate);
    border-radius: 2px;
    position: relative;
    background-color: rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

.mini-node {
    position: absolute;
    width: 6px;
    height: 6px;
    background-color: var(--color-white);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.mini-node:hover {
    background-color: var(--color-cyan);
    box-shadow: 0 0 10px var(--color-cyan);
}

.mini-node::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.55rem;
    background-color: rgba(0, 0, 0, 0.85);
    color: var(--color-cyan);
    padding: 1px 4px;
    border: 1px solid var(--border-slate);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.mini-node:hover::after {
    opacity: 1;
}

.line-conn {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.05);
    transform-origin: left center;
}

.preview-telemetry {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    border-top: 1px solid var(--border-slate);
    padding-top: 12px;
    line-height: 1.5;
}

/* Coordinate positioning map (tab 2 preview) */
.coordinate-map {
    height: 180px;
    border: 1px solid var(--border-slate);
    position: relative;
    background-color: rgba(0, 0, 0, 0.5);
}

.coordinate-map .axis-x {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: rgba(30, 41, 59, 0.6);
}

.coordinate-map .axis-y {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(30, 41, 59, 0.6);
}

.quadrant-label {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: rgba(255, 255, 255, 0.15);
}

.q1 { top: 10px; right: 10px; }
.q2 { top: 10px; left: 10px; }
.q3 { bottom: 10px; left: 10px; }
.q4 { bottom: 10px; right: 10px; }

.map-point {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    transform: translate(-50%, 50%);
    box-shadow: 0 0 10px var(--color-cyan);
}

.pulsing {
    animation: map-ping 2s infinite ease-in-out;
}

@keyframes map-ping {
    0%, 100% { box-shadow: 0 0 4px var(--color-cyan); }
    50% { box-shadow: 0 0 15px var(--color-cyan); }
}

/* Bar chart visualization */
.bar-chart-visualization {
    height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
    padding: 0 10px;
}

.bar-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bar-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--color-text-muted);
    width: 80px;
    white-space: nowrap;
}

.bar-track {
    flex: 1;
    height: 6px;
    background-color: var(--border-slate);
    border-radius: 3px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background-color: var(--color-text-muted);
    border-radius: 3px;
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.bar-val {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-white);
    width: 35px;
    text-align: right;
}

/* ==========================================================================
   LAYER 05: CONTACT & INPUT (ANALYSIS REQUEST)
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 60px;
    align-items: flex-start;
}

.contact-intro {
    max-width: 580px;
}

.contact-main-title {
    font-size: 3.2rem;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 900;
}

.contact-subtitle {
    color: var(--color-text-body);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 300;
}

/* Terminal Logs Box */
.terminal-logs-box {
    background-color: #05070c;
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    overflow: hidden;
}

.terminal-header {
    height: 34px;
    background-color: rgba(30, 41, 59, 0.2);
    border-bottom: 1px solid var(--border-slate);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 8px;
}

.term-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-cyan);
    border-radius: 50%;
    box-shadow: 0 0 5px var(--color-cyan);
}

.term-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

.terminal-body-text {
    padding: 20px;
    height: 180px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.6;
}

.log-line {
    margin-bottom: 8px;
    word-break: break-all;
}

.log-line:last-child {
    margin-bottom: 0;
}

/* Form Styling */
.contact-form-panel {
    background-color: rgba(11, 15, 25, 0.65);
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    padding: 40px;
    backdrop-filter: blur(15px);
}

.custom-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    width: 100%;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 16px;
    color: var(--color-cyan);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 14px 16px 14px 38px;
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

.input-wrapper input:focus {
    border-color: var(--color-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
    background-color: rgba(0, 0, 0, 0.6);
}

/* File Upload Alternative styling */
.file-upload-alternative {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
    border-top: 1px dashed var(--border-slate);
    padding-top: 12px;
}

.or-divider {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-text-muted);
    text-align: center;
    position: relative;
}

.file-upload-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: rgba(30, 41, 59, 0.2);
    border: 1px solid var(--border-slate);
    padding: 10px 16px;
    border-radius: 2px;
    color: var(--color-text-body);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.file-upload-btn:hover {
    background-color: rgba(30, 41, 59, 0.4);
    color: var(--color-white);
    border-color: var(--color-text-muted);
}

.file-name-txt {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* Select wrapper */
.select-wrapper {
    position: relative;
}

.select-wrapper select {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 14px 16px;
    color: var(--color-white);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    transition: var(--transition-smooth);
}

.select-wrapper select:focus {
    border-color: var(--color-cyan);
}

.select-arrow {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

/* Submit engine button */
.submit-btn {
    width: 100%;
    background-color: transparent;
    border: 1px solid var(--color-cyan);
    padding: 18px;
    color: var(--color-cyan);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.btn-glow-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-cyan);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 1;
}

.submit-btn-text {
    position: relative;
    z-index: 2;
}

.submit-btn:hover {
    color: var(--bg-deep-black);
    box-shadow: 0 0 30px var(--color-cyan-glow);
}

.submit-btn:hover .btn-glow-layer {
    opacity: 1;
}

/* Decoded report popup modal */
.report-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(8px);
}

.report-modal-content {
    background-color: #0b0f19;
    border: 1px solid var(--color-cyan);
    width: 100%;
    max-width: 840px;
    border-radius: 4px;
    overflow: hidden;
    animation: modal-slide-up 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 20px 80px rgba(0, 240, 255, 0.15);
}

@keyframes modal-slide-up {
    from { transform: translateY(40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.report-header {
    height: 54px;
    background-color: rgba(30, 41, 59, 0.3);
    border-bottom: 1px solid var(--border-slate);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.report-hdr-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.report-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-cyan);
    letter-spacing: 0.05em;
}

.close-report-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    line-height: 1;
}

.close-report-btn:hover {
    color: var(--color-white);
}

.report-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
}

.report-graph-col {
    border-right: 1px solid var(--border-slate);
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    position: relative;
}

.radar-box {
    width: 220px;
    height: 220px;
    position: relative;
}

.radar-label {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-text-muted);
}

.radar-label.top { top: -20px; left: 50%; transform: translateX(-50%); }
.radar-label.right { right: -35px; top: 50%; transform: translateY(-50%); }
.radar-label.bottom { bottom: -20px; left: 50%; transform: translateX(-50%); }
.radar-label.left { left: -35px; top: 50%; transform: translateY(-50%); }

.radar-scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(from 0deg at 50% 50%, rgba(0, 240, 255, 0.15) 0%, transparent 60%);
    animation: radar-spin 4s infinite linear;
}

@keyframes radar-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.report-info-col {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
}

.report-meta-box {
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 12px 16px;
    background-color: rgba(0, 0, 0, 0.2);
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-bottom: 6px;
}

.meta-row:last-child {
    margin-bottom: 0;
}

.meta-row span:first-child {
    color: var(--color-text-muted);
}

.report-scores {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.score-card {
    background-color: rgba(30, 41, 59, 0.2);
    border: 1px solid var(--border-slate);
    border-radius: 2px;
    padding: 12px 8px;
    text-align: center;
}

.score-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
    line-height: 1.2;
}

.score-num {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
}

.score-unit {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    margin-left: 2px;
}

.report-conclusion h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-cyan);
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

.report-conclusion p {
    color: var(--color-text-body);
    font-size: 0.85rem;
    line-height: 1.6;
    font-weight: 300;
}

.w-full {
    width: 100%;
}

/* ==========================================================================
   SYSTEM FOOTER
   ========================================================================== */
.system-footer {
    border-top: 1px solid var(--border-slate);
    padding: 30px 0;
    z-index: 100;
    position: relative;
    background-color: var(--bg-deep-black);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 0.1em;
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.footer-right {
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   RESPONSIVE LAYOUTS
   ========================================================================== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
    }
    .huge-brand-title {
        font-size: 5rem;
    }
    .about-grid, .contact-grid {
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .header-container {
        padding: 0 20px;
    }
    .nav-links {
        display: none; /* Let's keep it simple or hide system indicators to save space */
    }
    .system-status-indicator {
        border-left: none;
        padding-left: 0;
    }
    
    .hero-layout {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .hero-visualizer-card {
        max-width: 500px;
        width: 100%;
        margin: 0 auto;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-visual {
        border-right: none;
        border-bottom: 1px solid var(--border-slate);
        padding-right: 0;
        padding-bottom: 40px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .service-card {
        min-height: auto;
    }
    
    .code-editor-layout {
        grid-template-columns: 1fr;
    }
    
    .dashboard-preview-panel {
        border-left: none;
        border-top: 1px solid var(--border-slate);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .report-grid {
        grid-template-columns: 1fr;
    }
    
    .report-graph-col {
        border-right: none;
        border-bottom: 1px solid var(--border-slate);
        padding: 30px;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    .section-container {
        padding: 0 20px;
    }
    .hero-title {
        font-size: 2.4rem;
    }
    .huge-brand-title {
        font-size: 3.5rem;
    }
    .footer-container {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    .footer-left {
        flex-direction: column;
        gap: 8px;
    }
    .contact-form-panel {
        padding: 24px;
    }
}

/* ==========================================================================
   LAYER 01.5: LAB & EXPERIMENTAL SPACE
   ========================================================================== */
.lab-section {
    background-color: var(--bg-deep-black);
    padding: 100px 0;
    border-top: 1px solid var(--border-slate);
    border-bottom: 1px solid var(--border-slate);
    position: relative;
    overflow: hidden;
}

.lab-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
    align-items: center;
}

.lab-image-container {
    width: 100%;
}

.lab-img-frame {
    position: relative;
    border: 1px solid var(--border-slate);
    border-radius: 4px;
    padding: 10px;
    background-color: rgba(11, 15, 25, 0.45);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.lab-img-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan), transparent);
}

.frame-tag {
    display: block;
    font-size: 0.65rem;
    color: var(--color-cyan);
    margin-bottom: 8px;
    letter-spacing: 0.1em;
}

.lab-workspace-img {
    width: 100%;
    height: auto;
    border-radius: 2px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: block;
    filter: brightness(0.85) contrast(1.05);
    transition: var(--transition-smooth);
}

.lab-workspace-img:hover {
    filter: brightness(1) contrast(1.1);
}

/* Scanner sweep animation overlay on the lab image */
.scanner-sweep-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: linear-gradient(to bottom, 
        transparent 45%, 
        rgba(0, 240, 255, 0.15) 50%, 
        rgba(0, 240, 255, 0.02) 53%, 
        transparent 60%
    );
    background-size: 100% 200%;
    animation: image-sweep 6s infinite linear;
}

@keyframes image-sweep {
    0% { background-position: 0 -200%; }
    100% { background-position: 0 200%; }
}

.lab-info {
    max-width: 540px;
}

.lab-title {
    font-size: 2.4rem;
    line-height: 1.2;
    margin-bottom: 24px;
    font-weight: 800;
}

.lab-desc {
    color: var(--color-text-body);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 20px;
    font-weight: 300;
}

.lab-descHighlight {
    color: var(--color-white);
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 30px;
    font-weight: 400;
    border-left: 2px solid var(--color-cyan);
    padding-left: 16px;
}

.lab-meta {
    display: flex;
    gap: 30px;
    border-top: 1px solid var(--border-slate);
    padding-top: 24px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-item .lbl {
    font-size: 0.65rem;
    color: var(--color-text-muted);
}

.meta-item .val {
    font-size: 0.85rem;
    font-weight: 600;
}

/* Lab responsive styling in media queries */
@media (max-width: 992px) {
    .lab-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .lab-info {
        max-width: 100%;
    }
}

/* ==========================================================================
   LIGHT MODE OVERRIDES (셀록트 배경 밝게 처리 및 가독성 개선)
   ========================================================================== */

:root {
    --bg-deep-black: #fafbfe;
    --bg-dark-slate: #ffffff;
    --border-slate: #e2e8f0;
    --border-slate-glow: #cbd5e1;
    
    --color-white: #0f172a; /* 기존 white text -> 다크 슬레이트 텍스트 */
    --color-cyan: #0284c7; /* 라이트 모드 가독성을 고려한 세련된 딥 스카이 블루 */
    --color-cyan-glow: rgba(2, 132, 199, 0.2);
    --color-text-muted: #64748b;
    --color-text-body: #334155; /* 기존 연한 그레이 -> 어두운 그레이 */
}

/* 글로벌 타이포그래피 가독성 대대적 보정 */
body, p, span, li, a, label, input, select {
    line-height: 1.78 !important; /* 리얼 북/매거진처럼 넉넉한 1.78배 행간 */
    letter-spacing: 0.02em !important; /* 약간의 자간 여유를 주어 가독성 제고 */
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.38 !important;
    letter-spacing: -0.01em !important;
    margin-bottom: 0.6em !important;
}

/* Base resets & Background overrides */
html, body {
    background-color: var(--bg-deep-black) !important;
    color: var(--color-text-body) !important;
}

/* Symmetrical Tech Grid Background */
.tech-grid-overlay {
    background-image: 
        linear-gradient(rgba(148, 163, 184, 0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.12) 1px, transparent 1px) !important;
}

.tech-grid-overlay::after {
    background: radial-gradient(circle at 50% 50%, transparent 20%, rgba(250, 251, 254, 0.6) 80%) !important;
}

/* Interactive Cursor Coordinates Overlay */
.custom-cursor-tracker .coord-val {
    background-color: rgba(255, 255, 255, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    color: var(--color-cyan) !important;
}

/* Header Overrides */
.system-header {
    background-color: rgba(255, 255, 255, 0.8) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    backdrop-filter: blur(10px);
}

.logo-text, .nav-item:hover, .nav-item.active {
    color: var(--color-white) !important;
}

.system-status-indicator {
    background-color: rgba(2, 132, 199, 0.08) !important;
    border: 1px solid rgba(2, 132, 199, 0.15) !important;
    color: var(--color-cyan) !important;
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(90deg, var(--color-white) 0%, var(--color-cyan) 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

/* Visualizer Card (Hero & Contact) */
.hero-visualizer-card {
    background-color: rgba(255, 255, 255, 0.75) !important;
    border: 1px solid var(--border-slate) !important;
    box-shadow: 0 20px 40px rgba(148, 163, 184, 0.15) !important;
}

.card-header-bar {
    background-color: rgba(241, 245, 249, 0.9) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding: 12px 20px !important;
}

.header-title-text, .header-status {
    color: #475569 !important;
}

.telemetry-box {
    background-color: rgba(241, 245, 249, 0.8) !important;
    border: 1px solid var(--border-slate) !important;
    color: #334155 !important;
    padding: 16px 20px !important;
    margin-bottom: 20px !important;
}

.telemetry-row {
    border-bottom: 1px solid rgba(226, 232, 240, 0.8) !important;
    padding: 10px 0 !important; /* 넉넉한 텔레메트리 세로 패딩 */
}

.tel-label {
    color: #64748b !important;
    margin-right: 12px !important;
}

.tel-value.white-txt {
    color: #0f172a !important;
}

.interactive-sliders {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border-top: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding: 20px !important;
}

.slider-group {
    margin-bottom: 16px !important;
}

.slider-group label {
    color: #64748b !important;
    margin-bottom: 8px !important;
    display: inline-block !important;
}

/* Buttons */
.btn-secondary {
    border: 1px solid var(--border-slate) !important;
    color: #334155 !important;
    background-color: rgba(255, 255, 255, 0.8) !important;
}

.btn-secondary:hover {
    background-color: #f1f5f9 !important;
    border-color: #cbd5e1 !important;
}

/* Lab & Book Images Frame */
.lab-img-frame, .book-img-frame {
    background-color: rgba(255, 255, 255, 0.8) !important;
    border: 1px solid var(--border-slate) !important;
    box-shadow: 0 15px 30px rgba(148, 163, 184, 0.1) !important;
}

.frame-tag {
    background-color: rgba(241, 245, 249, 0.9) !important;
    border-right: 1px solid var(--border-slate) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    color: #475569 !important;
}

/* Book Section Bullets */
.highlight-bullet {
    background-color: rgba(255, 255, 255, 0.6) !important;
    border: 1px solid var(--border-slate) !important;
    margin-bottom: 24px !important; /* 리스트 간 간격 확실히 확보 */
    padding: 24px !important;
}

.highlight-bullet:hover {
    border-color: var(--color-cyan) !important;
    background-color: rgba(255, 255, 255, 0.9) !important;
    box-shadow: 0 10px 25px rgba(2, 132, 199, 0.05) !important;
}

.bullet-num {
    background-color: rgba(2, 132, 199, 0.06) !important;
    border-right: 1px solid var(--border-slate) !important;
    color: var(--color-cyan) !important;
    padding: 24px 20px !important;
}

.bullet-body {
    padding-left: 20px !important;
}

.bullet-body h5 {
    color: #0f172a !important;
    margin-bottom: 8px !important;
    font-size: 1.15rem !important;
}

.bullet-body p {
    color: #475569 !important;
    line-height: 1.7 !important;
}

/* Footer */
.system-footer {
    border-top: 1px solid var(--border-slate) !important;
    background-color: rgba(255, 255, 255, 0.8) !important;
    color: #64748b !important;
    padding: 30px 40px !important;
}

/* Contact Page form panel */
.contact-form-panel {
    background-color: rgba(255, 255, 255, 0.75) !important;
    border: 1px solid var(--border-slate) !important;
    box-shadow: 0 20px 40px rgba(148, 163, 184, 0.15) !important;
    padding: 40px !important;
}

.terminal-logs-box {
    background-color: rgba(241, 245, 249, 0.8) !important;
    border: 1px solid var(--border-slate) !important;
}

.terminal-header {
    background-color: rgba(226, 232, 240, 0.9) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding: 10px 16px !important;
}

.term-title {
    color: #475569 !important;
}

.terminal-body-text {
    color: #334155 !important;
    padding: 16px !important;
}

.form-row {
    margin-bottom: 24px !important; /* 입력 폼 행 간격 넓힘 */
}

.input-label {
    margin-bottom: 10px !important;
    display: inline-block !important;
    font-weight: 600 !important;
}

.input-wrapper {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    padding: 12px 16px !important;
}

.input-wrapper input {
    color: #0f172a !important;
}

.input-wrapper input::placeholder {
    color: #94a3b8 !important;
}

.select-wrapper select {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    color: #0f172a !important;
    padding: 12px 16px !important;
}

.select-arrow {
    color: #64748b !important;
}

.file-upload-btn {
    border: 1px dashed var(--border-slate) !important;
    background-color: rgba(248, 250, 252, 0.8) !important;
    color: #475569 !important;
    padding: 16px !important;
    margin-top: 12px !important;
}

.file-upload-btn:hover {
    border-color: var(--color-cyan) !important;
    background-color: rgba(2, 132, 199, 0.04) !important;
}

/* Modal Report Overlay */
.report-modal-content {
    background-color: rgba(255, 255, 255, 0.95) !important;
    border: 1px solid var(--border-slate) !important;
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.15) !important;
    padding: 40px !important;
}

.report-header {
    background-color: rgba(241, 245, 249, 0.95) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    color: #0f172a !important;
    padding: 16px 24px !important;
}

.report-title {
    color: #0f172a !important;
}

.close-report-btn {
    color: #64748b !important;
}

.radar-box {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    padding: 24px !important;
}

.report-meta-box {
    background-color: rgba(241, 245, 249, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    color: #334155 !important;
    padding: 16px 20px !important;
    margin-bottom: 24px !important;
}

.score-card {
    background-color: rgba(255, 255, 255, 0.8) !important;
    border: 1px solid var(--border-slate) !important;
    padding: 16px !important;
}

.score-label {
    color: #64748b !important;
}

.score-num {
    color: #0f172a !important;
}

.report-conclusion {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    color: #334155 !important;
    padding: 20px 24px !important;
}

.report-conclusion h4 {
    color: #0f172a !important;
    margin-bottom: 10px !important;
}

/* Dashboard Editor Layout */
.dashboard-tabs {
    border-right: 1px solid var(--border-slate) !important;
    background-color: rgba(248, 250, 252, 0.8) !important;
}

.tab-btn {
    border-bottom: 1px solid var(--border-slate) !important;
    color: #64748b !important;
    padding: 18px 24px !important;
}

.tab-btn:hover {
    background-color: rgba(241, 245, 249, 0.9) !important;
}

.tab-btn.active {
    background-color: #ffffff !important;
    color: #0f172a !important;
    border-right: 1px solid transparent !important;
}

.dashboard-panel {
    background-color: #ffffff !important;
    border: 1px solid var(--border-slate) !important;
    box-shadow: 0 15px 30px rgba(148, 163, 184, 0.1) !important;
}

.panel-header {
    background-color: rgba(241, 245, 249, 0.95) !important;
    border-bottom: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding: 14px 24px !important;
}

.file-path {
    color: #475569 !important;
}

.code-editor-main {
    background-color: #f8fafc !important;
    border-right: 1px solid var(--border-slate) !important;
}

.line-numbers {
    border-right: 1px solid rgba(226, 232, 240, 0.8) !important;
    color: #94a3b8 !important;
    padding: 20px 10px !important;
}

.code-viewport {
    padding: 20px !important;
}

.code-viewport pre code {
    color: #334155 !important;
    line-height: 1.6 !important;
}

.json-key { color: #0284c7 !important; }
.json-val { color: #0f766e !important; }
.json-num { color: #b45309 !important; }

.py-keyword { color: #0284c7 !important; }
.py-def { color: #0f766e !important; }
.py-comment { color: #94a3b8 !important; }

.dashboard-preview-panel {
    background-color: rgba(255, 255, 255, 0.95) !important;
    padding: 24px !important;
}

.preview-title {
    border-bottom: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding-bottom: 12px !important;
    margin-bottom: 20px !important;
}

.node-graph-mini, .coordinate-map, .bar-chart-visualization {
    background-color: rgba(248, 250, 252, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    padding: 20px !important;
}

.coordinate-map .axis-x, .coordinate-map .axis-y {
    background-color: #cbd5e1 !important;
}

.quadrant-label {
    color: #64748b !important;
}

.bar-track {
    background-color: #e2e8f0 !important;
}

.bar-label {
    color: #475569 !important;
}

.bar-val {
    color: #334155 !important;
}

.preview-telemetry {
    background-color: rgba(241, 245, 249, 0.9) !important;
    border: 1px solid var(--border-slate) !important;
    color: #475569 !important;
    padding: 16px !important;
    margin-top: 20px !important;
}

/* Insights Card Accordion Overrides & Spacious Legibility */
.insight-card {
    background-color: rgba(255, 255, 255, 0.75) !important;
    border: 1px solid var(--border-slate) !important;
    margin-bottom: 30px !important; /* 카드 간 간격 확대 */
    padding: 28px !important; /* 카드 내부 패딩 확대 */
    border-radius: 12px !important;
}

.insight-card:hover {
    border-color: var(--color-cyan) !important;
    box-shadow: 0 10px 30px rgba(2, 132, 199, 0.08) !important;
}

.insight-title {
    color: #0f172a !important;
    font-size: 1.68rem !important;
    font-weight: 700 !important;
    line-height: 1.4 !important;
    margin-top: 10px !important;
    margin-bottom: 14px !important;
}

.insight-summary {
    color: #475569 !important;
    font-size: 1.02rem !important;
    line-height: 1.68 !important;
    margin-bottom: 20px !important;
}

.insight-meta-top {
    color: #64748b !important;
    display: flex !important;
    align-items: center !important;
    gap: 16px !important; /* 태그, 날짜, 버전 간 간격 확보 */
    margin-bottom: 14px !important;
}

.insight-badge {
    background-color: rgba(2, 132, 199, 0.06) !important;
    color: var(--color-cyan) !important;
    padding: 4px 10px !important;
    font-size: 0.72rem !important;
    border-radius: 4px !important;
    font-weight: 600 !important;
}

.insight-telemetry-box {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)) !important;
    gap: 16px !important;
    background-color: rgba(241, 245, 249, 0.85) !important;
    border: 1px solid var(--border-slate) !important;
    padding: 20px 24px !important;
    margin-bottom: 28px !important;
    border-radius: 8px !important;
}

.tel-item {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 10px 0 !important;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8) !important;
}

.tel-item:last-child {
    border-bottom: none !important;
}

.tel-item .lbl {
    font-size: 0.8rem !important;
    color: #64748b !important;
    font-weight: 500 !important;
    margin-right: 16px !important; /* 텍스트 겹침 방지 여백 */
}

.tel-item .val {
    font-size: 0.85rem !important;
    font-weight: 600 !important;
    color: #0f172a !important;
}

.insight-reading-body {
    border-top: 1px solid var(--border-slate) !important;
    color: #334155 !important;
    padding-top: 28px !important;
    margin-top: 12px !important;
}

.insight-reading-body h6 {
    color: #0f172a !important;
    font-size: 1.18rem !important;
    font-weight: 700 !important;
    margin-top: 28px !important;
    margin-bottom: 12px !important;
}

.insight-reading-body h6:first-of-type {
    margin-top: 0 !important;
}

.insight-reading-body p {
    font-size: 1.05rem !important;
    line-height: 1.85 !important; /* 독서에 가장 편안한 1.85 행간 */
    margin-bottom: 20px !important; /* 단락 간격 확실하게 확보 */
    color: #334155 !important;
}

/* Services page stage elements */
.service-stage-card {
    background-color: rgba(255, 255, 255, 0.75) !important;
    border: 1px solid var(--border-slate) !important;
    margin-bottom: 30px !important;
    padding: 32px !important;
    border-radius: 12px !important;
}

.service-stage-card:hover {
    border-color: var(--color-cyan) !important;
    box-shadow: 0 15px 35px rgba(2, 132, 199, 0.08) !important;
}

.stage-header {
    border-bottom: 1px solid var(--border-slate) !important;
    padding-bottom: 16px !important;
    margin-bottom: 20px !important;
}

.stage-title {
    color: #0f172a !important;
    font-size: 1.48rem !important;
}

.stage-body p {
    color: #475569 !important;
    line-height: 1.75 !important;
}

.stage-badge {
    background-color: rgba(2, 132, 199, 0.06) !important;
    color: var(--color-cyan) !important;
    padding: 4px 10px !important;
    border-radius: 4px !important;
}