/* ===== VARIABLES & RESET ===== */
:root {
    /* Primary Colors */
    --primary: #0a0a0f;
    --secondary: #1a1a2e;
    --tertiary: #16213e;
    
    /* Accent Colors - Electrical Theme */
    --accent-primary: #00d4ff;
    --accent-secondary: #0099ff;
    --accent-tertiary: #7b68ee;
    --accent-success: #00ff9d;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --text-tertiary: #888888;
    
    /* Glass Morphism */
    --glass-light: rgba(255, 255, 255, 0.1);
    --glass-dark: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-secondary: linear-gradient(135deg, var(--accent-secondary), var(--accent-tertiary));
    --gradient-dark: linear-gradient(135deg, var(--primary), var(--secondary));
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.engineering-loader {
    position: relative;
    width: 80px;
    height: 80px;
}

.gear-1, .gear-2 {
    position: absolute;
    font-size: 2rem;
    color: var(--accent-primary);
}

.gear-1 {
    top: 0;
    left: 0;
    animation: gearRotate 2s linear infinite;
}

.gear-2 {
    bottom: 0;
    right: 0;
    animation: gearRotate 2s linear infinite reverse;
}

.voltage-spark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 4px;
    background: var(--accent-success);
    border-radius: 50%;
    animation: voltagePulse 1.5s ease-in-out infinite;
}

.loading-text {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== BACKGROUND ELEMENTS ===== */
.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.circuit-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-chip,
.floating-resistor,
.floating-capacitor,
.floating-transistor {
    position: absolute;
    width: 40px;
    height: 40px;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-primary);
    animation: floatElement 6s ease-in-out infinite;
}

.floating-chip { top: 20%; left: 10%; animation-delay: 0s; }
.floating-resistor { top: 60%; left: 85%; animation-delay: 1.5s; }
.floating-capacitor { top: 80%; left: 15%; animation-delay: 3s; }
.floating-transistor { top: 30%; left: 90%; animation-delay: 4.5s; }

/* ===== NAVIGATION ===== */
.glass-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition-normal);
}

.glass-nav.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

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

.nav-link i {
    font-size: 1rem;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--text-primary);
    background: rgba(0, 60, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-normal);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    position: relative;
}

.section {
    min-height: 100vh;
    padding: 100px 2rem 2rem;
    position: relative;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ===== HERO SECTION ===== */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.title-line.accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: var(--glass-light);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--glass-dark);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.engineering-showcase {
    position: relative;
    width: 500px;
    height: 500px;
}

.main-board {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: var(--glass-dark);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
}

.board-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.1;
    filter: blur(20px);
}

.circuit-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(90deg, transparent 49%, var(--accent-primary) 50%, transparent 51%),
        linear-gradient(transparent 49%, var(--accent-primary) 50%, transparent 51%);
    background-size: 30px 30px;
    opacity: 0.3;
    animation: circuitFlow 10s linear infinite;
}

.active-components {
    position: absolute;
    width: 100%;
    height: 100%;
}

.component {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: var(--transition-normal);
    cursor: pointer;
}

.component:hover {
    background: var(--accent-primary);
    color: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.component.cpu { top: 20%; left: 20%; }
.component.memory { top: 20%; right: 20%; }
.component.sensor { bottom: 20%; left: 20%; }
.component.power { bottom: 20%; right: 20%; }

.orbiting-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50%;
}

.orbit-1 { width: 400px; height: 400px; animation: orbitRotate 20s linear infinite; }
.orbit-2 { width: 450px; height: 450px; animation: orbitRotate 25s linear infinite reverse; }
.orbit-3 { width: 500px; height: 500px; animation: orbitRotate 30s linear infinite; }

.satellite,
.robot-arm,
.data-node {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-primary);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: var(--accent-primary);
    margin: 0 auto 0.5rem;
    animation: scrollBounce 2s infinite;
}

/* ===== ABOUT SECTION ===== */
.about-section {
    background: var(--secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-main h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-main p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: var(--transition-normal);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.feature-content p {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.1rem;
}

.feature-content span {
    color: var(--text-secondary);
    font-size: 0.89rem;
}

.visual-card {
    background: var(--glass-dark);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.engineering-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 153, 255, 0.1) 0%, transparent 50%);
}

.skill-matrix {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.matrix-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.matrix-progress {
    flex: 1;
    height: 8px;
    background: var(--glass-light);
    border-radius: 4px;
    overflow: hidden;
}

.matrix-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 0;
    transition: width 1.5s ease;
}

.matrix-item span {
    color: var(--text-primary);
    font-weight: 500;
    min-width: 120px;
}

/* ===== EXPERTISE SECTION ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.expertise-card {
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.expertise-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.05);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.expertise-card:hover .card-glow {
    opacity: 0.1;
}

.expertise-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.expertise-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.card-tech span {
    background: var(--glass-dark);
    border: 1px solid var(--glass-border);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

.card-actions {
    display: flex;
    justify-content: flex-end;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-normal);
}

.card-btn:hover {
    background: var(--glass-dark);
    transform: translateX(5px);
}

/* ===== PROJECTS SECTION ===== */
.projects-section {
    background: var(--tertiary);
}

.projects-showcase {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.project-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.project-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-animation {
    width: 300px;
    height: 300px;
    position: relative;
}

.animation-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    animation: corePulse 3s ease-in-out infinite;
}

.animation-rays {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: raysRotate 10s linear infinite;
}

.animation-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.project-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.project-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.project-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.project-stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.project-stat i {
    color: var(--accent-primary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.project-tech span {
    background: var(--glass-dark);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--accent-primary);
}

.project-actions {
    display: flex;
    gap: 1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.project-image {
    position: relative;
    height: 200px;
    background: var(--glass-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder {
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0.5;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 212, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-view {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: var(--primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-normal);
}

.project-view:hover {
    transform: scale(1.1);
}

.project-content {
    padding: 1.5rem;
}

.project-content h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-meta span {
    color: var(--accent-primary);
    font-size: 0.8rem;
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    transition: var(--transition-normal);
}

.contact-card:hover {
    transform: translateX(10px);
    background: var(--glass-dark);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.contact-details span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: var(--primary);
    transform: translateY(-5px);
}

.engineering-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    background: var(--glass-light);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.main-footer {
    background: var(--secondary);
    border-top: 1px solid var(--glass-border);
    padding: 3rem 0 1rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-brand .brand-logo {
    width: 50px;
    height: 50px;
}

.brand-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.brand-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.link-group h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.link-group a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.link-group a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .engineering-showcase {
        width: 400px;
        height: 400px;
        margin: 0 auto;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .engineering-showcase {
        width: 300px;
        height: 300px;
    }
    
    .main-board {
        width: 200px;
        height: 200px;
    }
    
    .orbit-1 { width: 250px; height: 250px; }
    .orbit-2 { width: 300px; height: 300px; }
    .orbit-3 { width: 350px; height: 350px; }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
    
    .project-hero {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-brand {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 80px 1rem 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .project-title {
        font-size: 1.75rem;
    }
    
    .project-stats {
        flex-direction: column;
        gap: 1rem;
    }
}
/* Download button animation */
.btn[download] {
    position: relative;
    overflow: hidden;
}

.btn[download]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn[download]:active::after {
    width: 100px;
    height: 100px;
}

/* Download loading state */
.btn.downloading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.downloading .fa-download {
    animation: downloadSpin 1s linear infinite;
}

@keyframes downloadSpin {
    0% { transform: translateY(0px); }
    50% { transform: translateY(3px); }
    100% { transform: translateY(0px); }
}
/* ===== PROJECT DETAILS STYLES ===== */

/* Project Hero Section */
.project-hero-section {
    min-height: 100vh;
    padding: 120px 2rem 2rem;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: relative;
    overflow: hidden;
}

.project-hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.project-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.project-breadcrumb a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: 500;
}

.project-breadcrumb a:hover {
    color: var(--text-primary);
}

.project-breadcrumb i {
    font-size: 0.7rem;
    opacity: 0.7;
}

.project-header {
    margin-bottom: 2.5rem;
}

.project-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--primary);
    padding: 0.5rem 1.2rem;
    border-radius: 25px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin: 0 0 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.project-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-weight: 400;
}

.project-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    background: var(--glass-light);
    padding: 0.75rem 1.2rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.meta-item i {
    color: var(--accent-primary);
    font-size: 1rem;
}

.project-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Project Showcase */
.project-showcase {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.showcase-image {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: 20px;
    overflow: hidden;
}

.project-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.showcase-image:hover .project-main-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
    pointer-events: none;
}



/* Project Gallery */