/* ===================================
   ROOT VARIABLES - ENGINEERING THEME
=================================== */
:root {
    --primary: #00D4FF;
    --primary-dark: #0099BB;
    --primary-glow: rgba(0, 212, 255, 0.3);
    --secondary: #FF6B35;
    --accent: #39FF14;
    --accent-yellow: #FFD700;
    --dark: #050810;
    --dark-2: #080D18;
    --dark-3: #0D1525;
    --dark-4: #111D30;
    --dark-5: #162035;
    --text-primary: #E8F4FF;
    --text-secondary: #7A9CC0;
    --text-muted: #3A5A7A;
    --border: rgba(0, 212, 255, 0.15);
    --border-bright: rgba(0, 212, 255, 0.4);
    --glass: rgba(0, 212, 255, 0.03);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
    --shadow-glow-strong: 0 0 60px rgba(0, 212, 255, 0.3);
    --radius: 4px;
    --radius-sm: 2px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Orbitron', monospace;
    --font-mono: 'Share Tech Mono', monospace;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===================================
   SCROLLBAR
=================================== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary); }

/* ===================================
   DEEP SPACE BACKGROUND
=================================== */
.space-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(140% 100% at 50% 10%, #0b1324 0%, #070d18 40%, #03060c 74%, #010203 100%),
        radial-gradient(90% 75% at 75% 75%, rgba(10, 22, 44, 0.32) 0%, transparent 65%);
}

.space-bg::before {
    content: '';
    position: absolute;
    width: 155%;
    height: 58%;
    top: 24%;
    left: -28%;
    pointer-events: none;
    background: radial-gradient(
        ellipse at 45% 50%,
        rgba(125, 148, 188, 0.1) 0%,
        rgba(84, 106, 146, 0.06) 16%,
        rgba(52, 69, 106, 0.035) 36%,
        rgba(28, 38, 64, 0.02) 52%,
        transparent 74%
    );
    filter: blur(88px);
    transform: rotate(-10deg);
    opacity: 0.2;
    animation: galaxyBandDrift 52s ease-in-out infinite alternate;
}

.space-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 50% 48%, transparent 30%, rgba(0, 0, 0, 0.64) 100%),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.28), transparent 34%, transparent 66%, rgba(0, 0, 0, 0.5));
    mix-blend-mode: multiply;
}

/* Nebula Layers */
.nebula {
    position: absolute;
    border-radius: 50%;
    filter: blur(108px);
    pointer-events: none;
    mix-blend-mode: screen;
}

.nebula-1 {
    width: 980px;
    height: 620px;
    background: radial-gradient(ellipse, rgba(68, 96, 150, 0.17) 0%, rgba(38, 56, 100, 0.08) 48%, transparent 72%);
    top: -220px;
    right: -260px;
    animation: nebulaDrift 45s ease-in-out infinite alternate;
}

.nebula-2 {
    width: 760px;
    height: 540px;
    background: radial-gradient(ellipse, rgba(96, 72, 148, 0.14) 0%, rgba(56, 42, 94, 0.07) 48%, transparent 72%);
    bottom: -130px;
    left: -170px;
    animation: nebulaDrift 40s ease-in-out infinite alternate-reverse;
}

.nebula-3 {
    width: 580px;
    height: 420px;
    background: radial-gradient(ellipse, rgba(58, 84, 132, 0.13) 0%, rgba(32, 48, 78, 0.06) 50%, transparent 72%);
    top: 28%;
    left: 24%;
    animation: nebulaDrift 52s ease-in-out infinite alternate;
}

.nebula-4 {
    width: 640px;
    height: 420px;
    background: radial-gradient(ellipse, rgba(70, 92, 126, 0.12) 0%, rgba(36, 50, 72, 0.055) 50%, transparent 72%);
    top: 58%;
    right: 4%;
    animation: nebulaDrift 48s ease-in-out infinite alternate-reverse;
}

@keyframes nebulaDrift {
    0% { transform: translate(0, 0) scale(1); opacity: 0.56; }
    100% { transform: translate(26px, 18px) scale(1.06); opacity: 0.3; }
}

@keyframes galaxyBandDrift {
    0% { transform: rotate(-10deg) translateX(0); }
    100% { transform: rotate(-8deg) translateX(28px); }
}

/* Aurora */
.aurora {
    display: none;
}

.aurora-1 {
    top: -40px;
    left: 0;
    right: 0;
    height: 260px;
    background: linear-gradient(180deg,
        rgba(115, 150, 210, 0.18) 0%,
        rgba(88, 124, 190, 0.1) 32%,
        rgba(70, 95, 152, 0.04) 62%,
        transparent 100%
    );
    animation: auroraWave 14s ease-in-out infinite alternate;
    filter: blur(34px);
}

.aurora-2 {
    top: 8px;
    left: 0;
    right: 0;
    height: 210px;
    background: linear-gradient(180deg,
        rgba(92, 118, 172, 0.12) 0%,
        rgba(66, 98, 150, 0.08) 50%,
        transparent 100%
    );
    animation: auroraWave 18s ease-in-out infinite alternate-reverse;
    filter: blur(42px);
}

@keyframes auroraWave {
    0% { transform: scaleX(1) translateY(0); opacity: 0.2; }
    50% { transform: scaleX(1.03) translateY(8px); opacity: 0.32; }
    100% { transform: scaleX(0.98) translateY(-3px); opacity: 0.16; }
}

/* Galaxy Clusters */
.galaxy-cluster {
    display: none;
}

.galaxy-cluster::before {
    content: '';
    position: absolute;
    inset: 14%;
    border-radius: 50%;
    background:
        repeating-conic-gradient(
            from 0deg,
            rgba(178, 206, 250, 0.16) 0deg 18deg,
            rgba(80, 112, 196, 0.06) 18deg 42deg,
            transparent 42deg 68deg
        );
    filter: blur(8px);
    animation: galaxyArms 90s linear infinite;
}

.galaxy-cluster::after {
    content: '';
    position: absolute;
    inset: 38%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.82) 0%, rgba(210, 232, 255, 0.28) 52%, transparent 85%);
    filter: blur(4px);
}

.galaxy-1 {
    width: 430px;
    height: 260px;
    top: 7%;
    right: -6%;
    transform: rotate(-16deg);
}

.galaxy-2 {
    width: 320px;
    height: 200px;
    bottom: 8%;
    left: -7%;
    opacity: 0.25;
    transform: rotate(14deg);
    animation-duration: 17s;
}

.galaxy-2::before {
    animation-duration: 110s;
    animation-direction: reverse;
}

.galaxy-3 {
    width: 240px;
    height: 150px;
    top: 34%;
    left: 20%;
    opacity: 0.2;
    transform: rotate(-22deg);
    animation-duration: 19s;
}

@keyframes galaxyArms {
    from { transform: rotate(0deg) scale(1); opacity: 0.7; }
    to { transform: rotate(360deg) scale(1.02); opacity: 0.95; }
}

@keyframes galaxyPulse {
    0%, 100% { opacity: 0.28; }
    50% { opacity: 0.44; }
}

/* Star Fields */
.stars {
    position: absolute;
    inset: 0;
    pointer-events: none;
    mix-blend-mode: screen;
    filter: none;
}

.stars-1 {
    background-image:
        radial-gradient(1px 1px at 10% 15%, rgba(255,255,255,0.9) 0%, transparent 100%),
        radial-gradient(1px 1px at 25% 40%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 40% 10%, rgba(255,255,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 55% 60%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 25%, rgba(255,255,255,0.9) 0%, transparent 100%),
        radial-gradient(1px 1px at 85% 75%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 80%, rgba(255,255,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 45%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 35% 90%, rgba(255,255,255,0.9) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 5%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 5% 55%, rgba(200,220,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 78% 88%, rgba(200,220,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 48% 35%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 92% 12%, rgba(255,255,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 3% 95%, rgba(255,255,255,0.7) 0%, transparent 100%);
    opacity: 0.44;
    animation: starTwinkle1 14s ease-in-out infinite alternate;
}

.stars-2 {
    background-image:
        radial-gradient(1.5px 1.5px at 20% 30%, rgba(200,220,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 70%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 65% 15%, rgba(255,240,200,0.9) 0%, transparent 100%),
        radial-gradient(1px 1px at 80% 55%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 85%, rgba(200,220,255,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 95% 30%, rgba(255,255,255,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 12% 65%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 58% 45%, rgba(200,220,255,0.7) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 72% 80%, rgba(255,240,200,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 38% 20%, rgba(255,255,255,0.5) 0%, transparent 100%);
    opacity: 0.32;
    animation: starTwinkle2 18s ease-in-out infinite alternate;
}

.stars-3 {
    background-image:
        radial-gradient(2px 2px at 8% 20%, rgba(255,240,200,0.9) 0%, transparent 100%),
        radial-gradient(2px 2px at 52% 78%, rgba(200,220,255,0.8) 0%, transparent 100%),
        radial-gradient(2px 2px at 88% 42%, rgba(255,255,255,0.9) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 33% 55%, rgba(255,200,200,0.7) 0%, transparent 100%),
        radial-gradient(2px 2px at 67% 92%, rgba(200,255,220,0.8) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 18% 48%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(2px 2px at 76% 8%, rgba(255,240,200,0.9) 0%, transparent 100%);
    opacity: 0.25;
    animation: starTwinkle3 22s ease-in-out infinite alternate;
}

@keyframes starTwinkle1 {
    0% { opacity: 0.3; }
    100% { opacity: 0.52; }
}

@keyframes starTwinkle2 {
    0% { opacity: 0.22; }
    100% { opacity: 0.4; }
}

@keyframes starTwinkle3 {
    0% { opacity: 0.16; }
    100% { opacity: 0.3; }
}

/* Shooting Stars Canvas */
#shootingStars {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.62;
}

/* ===================================
   PARTICLE CANVAS
=================================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.14;
}

/* ===================================
   GRID OVERLAY
=================================== */
.grid-overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.012) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* ===================================
   CONTAINER
=================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ===================================
   SECTION COMMON
=================================== */
.section-line-top {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.4;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
    padding-top: 80px;
}

.section-tag-eng {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--primary);
    margin-bottom: 16px;
}

.tag-bracket {
    color: var(--text-muted);
    font-size: 1rem;
}

.section-title-eng {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 4px;
    margin-bottom: 16px;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.title-underline {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    margin: 0 auto;
}

/* ===================================
   BUTTONS
=================================== */
.btn-primary-eng {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--primary);
    padding: 14px 28px;
    border: 1px solid var(--primary);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn-primary-eng::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: -1;
}

.btn-primary-eng:hover {
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

.btn-primary-eng:hover::before {
    transform: translateX(0);
}

.btn-secondary-eng {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--text-secondary);
    padding: 14px 28px;
    border: 1px solid var(--text-muted);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn-secondary-eng:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-eng {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: var(--primary);
    padding: 14px 32px;
    border: 1px solid var(--primary);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn-outline-eng:hover {
    background: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

/* ===================================
   NAVBAR
=================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(5, 8, 16, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 212, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-icon svg { width: 100%; height: 100%; }

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 2px;
}

.logo-dot { color: var(--primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 8px 16px;
    transition: var(--transition);
    position: relative;
    letter-spacing: 1px;
}

.nav-num {
    color: var(--primary);
    margin-right: 4px;
    font-size: 0.7rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 1px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 2px;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse-green 2s ease-in-out infinite;
}

@keyframes pulse-green {
    0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--accent); }
    50% { opacity: 0.5; box-shadow: none; }
}

.btn-hire {
    background: var(--primary);
    color: var(--dark);
    padding: 8px 20px;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    transition: var(--transition);
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
}

.btn-hire:hover {
    background: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================================
   HERO SECTION
=================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-scanline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    animation: scanline 4s linear infinite;
    opacity: 0.6;
}

@keyframes scanline {
    0% { top: 0; }
    100% { top: 100%; }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

/* Terminal */
.hero-terminal {
    background: var(--dark-3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 32px;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
    max-width: 420px;
}

.terminal-header {
    background: var(--dark-4);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background: #FF5F57; }
.terminal-dot.yellow { background: #FFBD2E; }
.terminal-dot.green { background: #28CA41; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 8px;
    letter-spacing: 1px;
}

.terminal-body {
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 2;
}

.term-prompt { color: var(--primary); margin-right: 8px; }
.term-cmd { color: var(--text-primary); }
.term-output { color: var(--text-secondary); padding-left: 16px; }
.term-ok { color: var(--accent); }

.term-cursor {
    color: var(--primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Hero Badge */
.hero-badge-eng {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 3px;
    color: var(--primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    margin-bottom: 24px;
    background: var(--glass);
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
}

.hero-badge-eng i { font-size: 0.9rem; }

/* Hero Title */
.hero-title {
    display: flex;
    flex-direction: column;
    margin-bottom: 24px;
}

.title-line {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 900;
    letter-spacing: 4px;
    line-height: 1.2;
    color: var(--text-primary);
}

.highlight-eng {
    color: var(--primary);
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.hero-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 480px;
    border-left: 2px solid var(--primary);
    padding-left: 16px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

/* Hero Metrics */
.hero-metrics {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--dark-3);
    border: 1px solid var(--border);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.metric {
    text-align: center;
    flex: 1;
}

.metric-value {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-top: 4px;
}

.metric-sep {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* ===================================
   RADAR ANIMATION
=================================== */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.radar-container {
    position: relative;
    width: 400px;
    height: 400px;
}

.radar-rings {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.radar-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.r1 { width: 100px; height: 100px; }
.r2 { width: 200px; height: 200px; }
.r3 { width: 300px; height: 300px; }
.r4 { width: 400px; height: 400px; border-color: rgba(0, 212, 255, 0.1); }

.radar-sweep {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(
        from 0deg,
        transparent 0deg,
        transparent 300deg,
        rgba(0, 212, 255, 0.1) 330deg,
        rgba(0, 212, 255, 0.4) 360deg
    );
    animation: radarSweep 3s linear infinite;
}

@keyframes radarSweep {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.radar-crosshair {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.crosshair-h {
    position: absolute;
    width: 100%;
    height: 1px;
    background: rgba(0, 212, 255, 0.15);
}

.crosshair-v {
    position: absolute;
    width: 1px;
    height: 100%;
    background: rgba(0, 212, 255, 0.15);
}

.radar-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.radar-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
    animation: pulse-radar 2s ease-in-out infinite;
}

@keyframes pulse-radar {
    0%, 100% { box-shadow: 0 0 10px var(--primary); }
    50% { box-shadow: 0 0 30px var(--primary), 0 0 60px rgba(0, 212, 255, 0.3); }
}

/* Radar Blips */
.radar-blip {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary);
    animation: blipFade 3s ease-in-out infinite;
}

.b1 { top: 25%; left: 60%; animation-delay: 0.5s; }
.b2 { top: 65%; left: 30%; animation-delay: 1.2s; }
.b3 { top: 40%; left: 75%; animation-delay: 2s; }
.b4 { top: 70%; left: 65%; animation-delay: 0.8s; }

@keyframes blipFade {
    0%, 100% { opacity: 0; transform: scale(0.5); }
    50% { opacity: 1; transform: scale(1); }
}

/* Profile in Radar */
.radar-profile {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
}

.hex-frame {
    width: 120px;
    height: 120px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: var(--dark-3);
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.hex-inner {
    font-size: 3rem;
    color: var(--text-muted);
}

/* Tech Cards */
.tech-card {
    position: absolute;
    background: var(--dark-3);
    border: 1px solid var(--border);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    z-index: 10;
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
    box-shadow: var(--shadow-glow);
}

.tech-card i {
    color: var(--primary);
    font-size: 1rem;
}

.tc-label {
    display: block;
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.tc-value {
    display: block;
    color: var(--primary);
    font-weight: 600;
}

.tc1 { top: 5%; right: -5%; animation: floatCard 6s ease-in-out infinite; }
.tc2 { bottom: 25%; right: -10%; animation: floatCard 8s ease-in-out infinite reverse; }
.tc3 { bottom: 5%; left: -5%; animation: floatCard 7s ease-in-out infinite 1s; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 1;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 3px;
}

/* ===================================
   ABOUT SECTION
=================================== */
.about {
    padding-bottom: 100px;
    position: relative;
    z-index: 1;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}

/* Profile Card */
.profile-card {
    background: var(--dark-3);
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.profile-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--dark-4);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.pc-id { color: var(--primary); }

.profile-img-area {
    padding: 32px;
    display: flex;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.profile-img-area .hex-frame {
    width: 180px;
    height: 180px;
    padding: 4px;
    background: var(--dark-4);
    border-color: var(--border-bright);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.2);
    overflow: hidden;
}

.profile-img-area .hex-inner {
    width: 100%;
    height: 100%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    overflow: hidden;
    background: var(--dark-5);
}

.profile-img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center 24%;
}

.hex-frame-lg {
    width: 180px;
    height: 180px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: var(--dark-4);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-bright);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.2);
}

.hex-frame-lg i {
    font-size: 5rem;
    color: var(--text-muted);
}

.profile-scan-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    animation: scanProfile 3s linear infinite;
    opacity: 0.6;
}

@keyframes scanProfile {
    0% { top: 0; }
    100% { top: 100%; }
}

.profile-data {
    padding: 0 16px 16px;
}

.data-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 212, 255, 0.05);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.data-key {
    color: var(--text-muted);
    letter-spacing: 2px;
    font-size: 0.7rem;
}

.data-val {
    color: var(--text-primary);
}

.status-green { color: var(--accent); }

.profile-card-footer {
    padding: 12px 16px;
    background: var(--dark-4);
    border-top: 1px solid var(--border);
}

.barcode {
    height: 24px;
    background: repeating-linear-gradient(
        90deg,
        var(--text-muted) 0px,
        var(--text-muted) 2px,
        transparent 2px,
        transparent 4px,
        var(--text-muted) 4px,
        var(--text-muted) 5px,
        transparent 5px,
        transparent 8px,
        var(--text-muted) 8px,
        var(--text-muted) 11px,
        transparent 11px,
        transparent 13px
    );
    opacity: 0.3;
}

/* About Right */
.about-heading-eng {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 2px;
    margin-bottom: 20px;
    line-height: 1.4;
}

.about-text-eng {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.about-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 32px 0;
}

.spec-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: var(--dark-3);
    border: 1px solid var(--border);
    border-left: 2px solid var(--primary);
}

.spec-icon {
    color: var(--primary);
    font-size: 0.9rem;
    margin-top: 2px;
}

.spec-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.spec-value {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.about-actions-eng {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.social-links-eng {
    display: flex;
    gap: 8px;
}

.social-eng {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

.social-eng:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

/* ===================================
   EXPERTISE SECTION
=================================== */
.expertise {
    padding-bottom: 100px;
    position: relative;
    z-index: 1;
    background: var(--dark-2);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}

.expertise-card {
    background: var(--dark-3);
    border: 1px solid var(--border);
    padding: 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 0;
    background: var(--primary);
    transition: height 0.4s ease;
}

.expertise-card:hover {
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.expertise-card:hover::before {
    height: 100%;
}

.ec-main {
    grid-column: span 1;
    border-color: rgba(0, 212, 255, 0.3);
}

.ec-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.ec-icon {
    width: 44px;
    height: 44px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
    flex-shrink: 0;
    clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

.ec-header h3 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.ec-level {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--primary);
    letter-spacing: 2px;
}

.expertise-card > p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.ec-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.ec-tags span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--primary);
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    padding: 3px 8px;
    letter-spacing: 1px;
}

.ec-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ec-bar > span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--primary);
    white-space: nowrap;
}

.ec-fill-wrapper {
    flex: 1;
    height: 3px;
    background: var(--dark-5);
}

.ec-fill {
    height: 3px;
    background: linear-gradient(90deg, var(--primary), rgba(0, 212, 255, 0.4));
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    flex: 1;
    position: relative;
}

.ec-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: -2px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--primary);
}

/* Tools Section */
.tools-section {
    background: var(--dark-3);
    border: 1px solid var(--border);
    padding: 32px;
    position: relative;
}

.tools-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.tools-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 3px;
    margin-bottom: 24px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
}

.tool-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 8px;
    background: var(--dark-4);
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: default;
}

.tool-item:hover {
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.05);
    box-shadow: var(--shadow-glow);
}

.tool-item i {
    font-size: 1.4rem;
    color: var(--primary);
}

.tool-item span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-align: center;
}

/* ===================================
   PROJECTS SECTION
=================================== */
.projects {
    padding-bottom: 100px;
    position: relative;
    z-index: 1;
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn-eng {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 20px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition);
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
}

.filter-btn-eng:hover,
.filter-btn-eng.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

.projects-grid-eng {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.project-card-eng {
    background: var(--dark-3);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.project-card-eng:hover {
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.featured-eng {
    border-color: rgba(0, 212, 255, 0.3);
}

.project-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--dark-4);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.ps-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.ps-dot.active {
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent);
    animation: pulse-green 2s ease-in-out infinite;
}

.ps-dot.warning {
    background: var(--accent-yellow);
    box-shadow: 0 0 6px var(--accent-yellow);
    animation: pulse-yellow 2s ease-in-out infinite;
}

@keyframes pulse-yellow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.project-img-eng {
    height: 160px;
    background: var(--dark-4);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.project-icon-eng {
    font-size: 3.5rem;
    color: var(--text-muted);
    opacity: 0.3;
    transition: var(--transition);
}

.project-overlay-eng {
    position: absolute;
    inset: 0;
    background: rgba(5, 8, 16, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    opacity: 0;
    transition: var(--transition);
}

.project-card-eng:hover .project-overlay-eng { opacity: 1; }
.project-card-eng:hover .project-thumb { transform: scale(1.04); }

.proj-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 1px;
    transition: var(--transition);
    clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

.proj-btn:hover {
    background: var(--primary);
    color: var(--dark);
}

.project-info-eng {
    padding: 20px;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.proj-category {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--primary);
    letter-spacing: 2px;
}

.proj-year {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
}

.project-info-eng h3 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    margin-bottom: 10px;
    line-height: 1.4;
}

.project-info-eng p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--primary);
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    padding: 2px 8px;
    letter-spacing: 1px;
}

.projects-cta-eng {
    text-align: center;
}

/* ===================================
   CERTIFICATIONS SECTION
=================================== */
.certifications {
    padding-bottom: 100px;
    position: relative;
    z-index: 1;
    background: var(--dark-2);
}

.cred-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.cred-filter {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.cred-filter-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 18px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: var(--transition);
    clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
}

.cred-filter-btn:hover,
.cred-filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

.cred-card {
    background: var(--dark-3);
    border: 1px solid var(--border);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
    position: relative;
}

.cred-card:hover {
    border-color: var(--border-bright);
    box-shadow: var(--shadow-glow);
}

.cred-icon {
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
}

.cred-info { flex: 1; }

.cred-type {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.cred-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.3;
}

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

.cred-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 1px;
    padding: 3px 8px;
    border: 1px solid;
    white-space: nowrap;
    align-self: flex-start;
}

.cred-badge.verified { color: var(--accent); border-color: var(--accent); }
.cred-badge.published { color: var(--primary); border-color: var(--primary); }
.cred-badge.patent { color: var(--accent-yellow); border-color: var(--accent-yellow); }

/* ===================================
   CONTACT SECTION
=================================== */
.contact {
    padding-bottom: 100px;
    position: relative;
    z-index: 1;
}

.contact-content-eng {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}

/* Signal Animation */
.contact-signal {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 32px;
}

.signal-rings {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sig-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--primary);
    animation: signalPulse 3s ease-out infinite;
}

.sr1 { width: 40px; height: 40px; animation-delay: 0s; }
.sr2 { width: 80px; height: 80px; animation-delay: 0.5s; }
.sr3 { width: 120px; height: 120px; animation-delay: 1s; }

@keyframes signalPulse {
    0% { opacity: 0.8; transform: scale(0.8); }
    100% { opacity: 0; transform: scale(1.2); }
}

.signal-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.1rem;
    z-index: 1;
}

.contact-heading {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 2px;
    margin-bottom: 16px;
    text-align: center;
}

.contact-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
    text-align: center;
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.channel-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--dark-3);
    border: 1px solid var(--border);
    border-left: 2px solid var(--primary);
}

.channel-icon {
    color: var(--primary);
    font-size: 0.9rem;
    width: 20px;
    text-align: center;
}

.ch-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.ch-value {
    display: block;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.contact-social-eng {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.csocial {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

.csocial:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

/* Contact Form */
.contact-form-eng {
    background: var(--dark-3);
    border: 1px solid var(--border);
    overflow: hidden;
}

.form-header-eng {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--dark-4);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.fh-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--primary);
    animation: pulse-green 2s ease-in-out infinite;
}

.fh-id {
    margin-left: auto;
    color: var(--primary);
}

form {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row-eng {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group-eng {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group-eng label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.form-group-eng input,
.form-group-eng textarea {
    background: var(--dark-4);
    border: 1px solid var(--border);
    padding: 12px 14px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition);
    resize: vertical;
}

.form-group-eng input::placeholder,
.form-group-eng textarea::placeholder {
    color: var(--text-muted);
}

.form-group-eng input:focus,
.form-group-eng textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.1);
    background: var(--dark-3);
}

.btn-submit-eng {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--primary);
    color: var(--dark);
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn-submit-eng:hover {
    background: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-submit-eng:disabled {
    cursor: not-allowed;
    opacity: 0.85;
}

.form-honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

.form-status-eng {
    min-height: 18px;
    margin: 2px 0 0;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: var(--text-muted);
}

/* ===================================
   FOOTER
=================================== */
.footer-eng {
    background: var(--dark-2);
    border-top: 1px solid var(--border);
    padding: 80px 0 0;
    position: relative;
    z-index: 1;
}

.footer-grid-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-content-eng {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.logo-icon-sm {
    width: 28px;
    height: 28px;
}

.footer-logo span {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.footer-brand-eng p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    max-width: 220px;
}

.footer-coords {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.coords-note {
    display: block;
    margin-top: 8px;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.footer-nav-eng h4,
.footer-services-eng h4,
.footer-status-eng h4 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--primary);
    letter-spacing: 3px;
    margin-bottom: 20px;
}

.footer-nav-eng ul,
.footer-services-eng ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav-eng a,
.footer-services-eng a {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: var(--transition);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.footer-nav-eng a:hover,
.footer-services-eng a:hover {
    color: var(--primary);
    padding-left: 8px;
}

.sys-status {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
}

.sys-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.sys-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.sys-dot.green {
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent);
    animation: pulse-green 2s ease-in-out infinite;
}

.sys-dot.yellow {
    background: var(--accent-yellow);
    box-shadow: 0 0 6px var(--accent-yellow);
}

.footer-freq {
    display: flex;
    align-items: center;
    gap: 10px;
}

.freq-bar {
    flex: 1;
    height: 24px;
    background: var(--dark-4);
    border: 1px solid var(--border);
    overflow: hidden;
    position: relative;
}

.freq-wave {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        90deg,
        transparent 0px,
        transparent 3px,
        rgba(0, 212, 255, 0.4) 3px,
        rgba(0, 212, 255, 0.4) 4px
    );
    animation: freqAnim 1s linear infinite;
}

@keyframes freqAnim {
    from { transform: translateX(0); }
    to { transform: translateX(-7px); }
}

.footer-freq span {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--primary);
    letter-spacing: 2px;
    white-space: nowrap;
}

.footer-bottom-eng {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.footer-bottom-eng i { color: var(--primary); }

/* ===================================
   BACK TO TOP
=================================== */
.back-to-top-eng {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

.back-to-top-eng.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top-eng:hover {
    background: var(--primary);
    color: var(--dark);
    box-shadow: var(--shadow-glow);
}

/* ===================================
   ANIMATIONS
=================================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 1024px) {
    .hero-container { gap: 48px; }
    .radar-container { width: 320px; height: 320px; }
    .r4 { width: 320px; height: 320px; }
    .r3 { width: 240px; height: 240px; }
    .expertise-grid { grid-template-columns: repeat(2, 1fr); }
    .tools-grid { grid-template-columns: repeat(4, 1fr); }
    .footer-content-eng { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--dark-2);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 8px;
        transition: var(--transition);
        border-left: 1px solid var(--border);
        z-index: 999;
    }

    .nav-links.open { right: 0; }
    .nav-cta { display: none; }
    .hamburger { display: flex; z-index: 1000; }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-visual { order: -1; }
    .radar-container { width: 280px; height: 280px; }
    .r4 { width: 280px; height: 280px; }
    .r3 { width: 210px; height: 210px; }
    .r2 { width: 140px; height: 140px; }
    .r1 { width: 70px; height: 70px; }

    .hero-description { margin: 0 auto 36px; }
    .hero-actions { justify-content: center; }
    .hero-terminal { margin: 0 auto 32px; }

    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .expertise-grid { grid-template-columns: 1fr; }
    .tools-grid { grid-template-columns: repeat(3, 1fr); }
    .projects-grid-eng { grid-template-columns: 1fr; }
    .cred-grid { grid-template-columns: 1fr; }
    .contact-content-eng { grid-template-columns: 1fr; gap: 40px; }
    .form-row-eng { grid-template-columns: 1fr; }
    .footer-content-eng { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom-eng { flex-direction: column; gap: 8px; text-align: center; }
    .tc1, .tc2, .tc3 { display: none; }

    .space-bg::before { opacity: 0.16; }
}

@media (max-width: 480px) {
    .title-line { font-size: 1.5rem; }
    .hero-metrics { gap: 12px; padding: 16px; }
    .metric-value { font-size: 1.4rem; }
    .tools-grid { grid-template-columns: repeat(2, 1fr); }
    .about-specs { grid-template-columns: 1fr; }
    .space-bg::before { opacity: 0.12; }
}