/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-bg: #ffffff;
    --secondary-bg: #f5f5f7;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent-color: #0071e3;
    --accent-hover: #0077ed;
    --border-color: #d2d2d7;
    --card-bg: rgba(255, 255, 255, 0.7);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --pcb-trace: #0066cc;
    --glow-primary: rgba(0, 113, 227, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--primary-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 rgba(255, 255, 255, 0.8),
        inset 0 -1px 0 rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 400;
    transition: opacity 0.2s ease;
    position: relative;
}

.nav-menu a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #e8f0ec 0%, #f5f5f7 50%, #d4e6dc 100%);
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 113, 227, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

/* PCB Background Elements */
.pcb-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.5;
    pointer-events: none;
    z-index: 2;
}

.pcb-layer {
    width: 100%;
    height: 100%;
}

/* Background PCB Traces */
.bg-trace {
    fill: none;
    stroke: #0066cc;
    stroke-width: 3;
    stroke-linecap: square;
    stroke-linejoin: miter;
    opacity: 0.25;
    filter: drop-shadow(0 0 2px rgba(0, 102, 204, 0.3));
    animation: tracePulse 4s ease-in-out infinite;
}

.background-traces {
    opacity: 1;
}

/* Stagger animation delays for traces */
.bg-trace:nth-child(1) { animation-delay: 0s; }
.bg-trace:nth-child(2) { animation-delay: 0.3s; }
.bg-trace:nth-child(3) { animation-delay: 0.6s; }
.bg-trace:nth-child(4) { animation-delay: 0.9s; }
.bg-trace:nth-child(5) { animation-delay: 1.2s; }
.bg-trace:nth-child(6) { animation-delay: 1.5s; }
.bg-trace:nth-child(7) { animation-delay: 1.8s; }
.bg-trace:nth-child(8) { animation-delay: 2.1s; }
.bg-trace:nth-child(9) { animation-delay: 2.4s; }
.bg-trace:nth-child(10) { animation-delay: 2.7s; }
.bg-trace:nth-child(11) { animation-delay: 3.0s; }
.bg-trace:nth-child(12) { animation-delay: 0.4s; }
.bg-trace:nth-child(13) { animation-delay: 0.8s; }
.bg-trace:nth-child(14) { animation-delay: 1.2s; }
.bg-trace:nth-child(15) { animation-delay: 1.6s; }
.bg-trace:nth-child(16) { animation-delay: 2.0s; }
.bg-trace:nth-child(17) { animation-delay: 2.4s; }
.bg-trace:nth-child(18) { animation-delay: 0.5s; }
.bg-trace:nth-child(19) { animation-delay: 1.0s; }
.bg-trace:nth-child(20) { animation-delay: 1.5s; }
.bg-trace:nth-child(21) { animation-delay: 2.0s; }
.bg-trace:nth-child(22) { animation-delay: 2.5s; }
.bg-trace:nth-child(23) { animation-delay: 3.0s; }

@keyframes tracePulse {
    0%, 100% { opacity: 0.25; }
    50% { opacity: 0.5; filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.8)); }
}

/* PCB Traces */
.trace {
    fill: none;
    stroke: #0066cc;
    stroke-width: 4;
    stroke-linecap: square;
    stroke-linejoin: miter;
    filter: drop-shadow(0 0 2px rgba(0, 102, 204, 0.6));
    animation: drawTrace 3s ease-out forwards;
}

.trace-fade {
    stroke: url(#trace-gradient);
}

.trace-1 { animation-delay: 0.2s; }
.trace-2 { animation-delay: 0.6s; }
.trace-3 { animation-delay: 1.0s; }
.trace-4 { animation-delay: 1.4s; }

@keyframes drawTrace {
    to {
        stroke-dashoffset: 0;
    }
}

/* Vias */
.via-group {
    opacity: 0;
    animation: fadeInVia 0.6s ease-out forwards;
}

.via-group-1 { animation-delay: 1.2s; }
.via-group-2 { animation-delay: 1.3s; }
.via-group-3 { animation-delay: 1.4s; }
.via-group-4 { animation-delay: 1.5s; }
.via-group-5 { animation-delay: 1.6s; }
.via-group-6 { animation-delay: 1.7s; }
.via-group-7 { animation-delay: 1.8s; }
.via-group-8 { animation-delay: 1.9s; }

.via-outer {
    fill: none;
    stroke: #d4970b;
    stroke-width: 2;
    filter: drop-shadow(0 0 2px rgba(212, 151, 11, 0.6));
}

.via-inner {
    fill: #2c2c2c;
    animation: pulseVia 2s ease-in-out infinite;
}

@keyframes fadeInVia {
    from {
        opacity: 0;
        transform: scale(0);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulseVia {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* Component Styles */
.component {
    opacity: 1 !important;
}

.mcu { animation-delay: 0.5s; }
.led { animation-delay: 0.6s; }
.resistor { animation-delay: 0.7s; }
.capacitor { animation-delay: 0.8s; }

@keyframes fadeInComponent {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* MCU/Chip Styles */
.chip-body {
    fill: #1a1a1a;
    stroke: #d4970b;
    stroke-width: 1;
}

.chip-dot {
    fill: #e8e8e8;
}

.chip-pin {
    fill: #0066cc;
    filter: drop-shadow(0 0 1px rgba(0, 102, 204, 0.6));
}

/* LED Styles */
.led-body {
    fill: #2a2a2a;
    stroke: none;
}

.led-tab {
    fill: #c0c0c0;
    stroke: none;
}

.led-light {
    opacity: 0.8;
    animation: ledBlink 2.5s ease-in-out infinite;
}

.led-light-red {
    fill: #ff3333;
    animation-delay: 0s;
}

.led-light-green {
    fill: #33ff66;
    animation-delay: 0.6s;
}

.led-light-blue {
    fill: #3366ff;
    animation-delay: 1.2s;
}

.led-light-yellow {
    fill: #ffdd33;
    animation-delay: 1.8s;
}

@keyframes ledBlink {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; filter: drop-shadow(0 0 12px currentColor); }
}

/* Battery Styles */
.battery-body {
    fill: #c0c0c0;
    stroke: #0066cc;
    stroke-width: 2;
}

.battery-plus {
    fill: #ff0000;
    font-weight: bold;
}

.battery-terminal-pos {
    fill: #0066cc;
}

.battery-terminal-neg {
    fill: #0066cc;
}

/* Resistor Styles */
.resistor-body {
    fill: #d4c5a0;
    stroke: #0066cc;
    stroke-width: 1;
}

.resistor-band {
    opacity: 0.8;
}

/* Capacitor Styles */
.cap-body {
    fill: #8b6914;
    stroke: #0066cc;
    stroke-width: 0.5;
}

.cap-electrolytic {
    fill: #2c3e50;
    stroke: #0066cc;
    stroke-width: 1;
}

/* Crystal Oscillator */
.crystal-body {
    fill: #c0c0c0;
    stroke: #0066cc;
    stroke-width: 1;
}

/* Servo Motor */
.servo-body {
    fill: #1565c0;
    stroke: none;
}

.servo-shaft {
    fill: #e8e8e8;
    stroke: none;
}

.servo-arm {
    animation: servoRotate 8s ease-in-out infinite;
    transform-origin: 0 0;
}

.servo-screw {
    fill: #333;
}

@keyframes servoRotate {
    0% { transform: rotate(0deg); }
    12% { transform: rotate(0deg); }
    20% { transform: rotate(180deg); }
    32% { transform: rotate(180deg); }
    40% { transform: rotate(270deg); }
    52% { transform: rotate(270deg); }
    60% { transform: rotate(120deg); }
    72% { transform: rotate(120deg); }
    80% { transform: rotate(330deg); }
    92% { transform: rotate(330deg); }
    100% { transform: rotate(360deg); }
}

/* Toggle Switch */
.switch-body {
    fill: #444;
    stroke: none;
}

.switch-slot {
    stroke: none;
}

.switch-handle {
    animation: switchToggle 4s ease-in-out infinite;
    transform-origin: center;
}

@keyframes switchToggle {
    0% { transform: translateX(-20px); }
    45% { transform: translateX(-20px); }
    50% { transform: translateX(20px); }
    95% { transform: translateX(20px); }
    100% { transform: translateX(-20px); }
}

/* Diode */
.diode-body {
    fill: #1a1a1a;
    stroke: #0066cc;
    stroke-width: 0.5;
}

/* Transistor */
.transistor-body {
    fill: #1a1a1a;
    stroke: #0066cc;
    stroke-width: 1;
}

/* USB Connector */
.usb-body {
    fill: #c0c0c0;
    stroke: #0066cc;
    stroke-width: 1;
}

.usb-port {
    stroke: #0066cc;
    stroke-width: 0.5;
}

/* Silkscreen */
.silkscreen {
    fill: #ffffff;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    opacity: 1 !important;
    filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.8));
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    padding: 0 24px;
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    line-height: 1.05;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(20px, 3vw, 28px);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 48px;
    letter-spacing: -0.01em;
}

.cta-button {
    display: inline-block;
    padding: 16px 40px;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 980px;
    font-size: 17px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.cta-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease-out forwards;
    opacity: 0;
}

.fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s forwards;
    opacity: 0;
}

.fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
    from {
        opacity: 0;
        transform: translateY(20px);
    }
}

/* Section Styles */
section {
    padding: 120px 0;
    position: relative;
}




.section-title {
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 64px;
    text-align: center;
    color: var(--text-primary);
}

/* Projects Section */
.projects {
    background: var(--secondary-bg);
    position: relative;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    position: relative;
    z-index: 1;
}

.project-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 102, 204, 0.1);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 32px;
}

.project-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 1.5;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 14px;
    background-color: var(--secondary-bg);
    border-radius: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* About Section */
.about {
    background: var(--primary-bg);
    position: relative;
    overflow: hidden;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-text {
    text-align: left;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 32px;
}

.about-description {
    font-size: 19px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat p {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 8px;
}

.infinity-stat {
    font-size: 64px !important;
    line-height: 0.8;
    margin-bottom: 25px !important;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Skills Section */
.skills {
    background: var(--primary-bg);
    position: relative;
}

.skills-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.skill-item {
    margin-bottom: 32px;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}

.skill-item.active {
    opacity: 1;
    transform: translateX(0);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.skill-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.skill-percentage {
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-color);
    font-family: 'Courier New', monospace;
}

.skill-bar {
    width: 100%;
    height: 12px;
    background: var(--secondary-bg);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.06);
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, #0066cc 0%, #3399ff 100%);
    border-radius: 8px;
    position: relative;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px rgba(0, 102, 204, 0.3);
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%
    );
    animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #f8f8f8 0%, #e8e8e8 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(30deg, transparent 48%, rgba(0, 102, 204, 0.02) 49%, rgba(0, 102, 204, 0.02) 51%, transparent 52%),
        linear-gradient(-30deg, transparent 48%, rgba(0, 102, 204, 0.02) 49%, rgba(0, 102, 204, 0.02) 51%, transparent 52%);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contact-subtitle {
    text-align: center;
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: 64px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    margin-top: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item h3 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.contact-item p {
    font-size: 19px;
    color: var(--text-primary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pcb-form-container {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 245, 245, 0.9) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 2px solid rgba(0, 102, 204, 0.2);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}


.form-field {
    position: relative;
    margin-bottom: 24px;
    z-index: 1;
}

.field-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

.label-text {
    font-size: 12px;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
}

.pin-indicator {
    font-size: 11px;
    color: #0066cc;
    opacity: 0.7;
    font-weight: normal;
}

.input-wrapper {
    position: relative;
}

.input-trace {
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, transparent, #0066cc, transparent);
    border-radius: 2px;
    transition: height 0.3s ease;
    z-index: 1;
}

.input-wrapper:focus-within .input-trace {
    height: 100%;
    animation: tracePulseVertical 2s ease-in-out infinite;
}

@keyframes tracePulseVertical {
    0%, 100% {
        opacity: 0.5;
        filter: drop-shadow(0 0 2px rgba(0, 102, 204, 0.4));
    }
    50% {
        opacity: 1;
        filter: drop-shadow(0 0 6px rgba(0, 102, 204, 0.8));
    }
}

.form-field input,
.form-field textarea {
    width: 100%;
    padding: 16px 20px 16px 24px;
    border: 2px solid rgba(0, 102, 204, 0.2);
    border-radius: 8px;
    font-size: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: #0066cc;
    background: rgba(255, 255, 255, 0.95);
    box-shadow:
        0 0 0 4px rgba(0, 102, 204, 0.1),
        0 4px 12px rgba(0, 102, 204, 0.15);
    transform: translateX(4px);
}

.input-led {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: #ccc;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

.form-field textarea + .input-led {
    top: 24px;
    transform: none;
}

.input-wrapper:focus-within .input-led {
    background: #33ff66;
    box-shadow:
        0 0 8px rgba(51, 255, 102, 0.8),
        0 0 12px rgba(51, 255, 102, 0.4),
        inset 0 1px 2px rgba(255, 255, 255, 0.3);
    animation: ledPulse 1.5s ease-in-out infinite;
}

@keyframes ledPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.pcb-submit-button {
    margin-top: 16px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    width: 100%;
    height: 70px;
    transition: all 0.3s ease;
}

.button-chip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border: 2px solid #d4970b;
    border-radius: 8px;
    position: relative;
    overflow: visible;
    transition: all 0.3s ease;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.chip-content {
    font-family: 'Courier New', monospace;
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 3px;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    position: relative;
    z-index: 2;
}

.chip-pins {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.chip-pins-left {
    left: -12px;
}

.chip-pins-right {
    right: -12px;
}

.chip-pins::before,
.chip-pins::after {
    content: '';
    width: 12px;
    height: 3px;
    background: linear-gradient(90deg, #c0c0c0, #e8e8e8);
    border-radius: 1px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.chip-pins-left::before,
.chip-pins-left::after {
    transform-origin: right;
}

.chip-pins-right::before,
.chip-pins-right::after {
    transform-origin: left;
}

.button-trace-left,
.button-trace-right {
    position: absolute;
    top: 50%;
    width: 60px;
    height: 3px;
    background: #0066cc;
    transform: translateY(-50%);
    opacity: 0;
    transition: all 0.4s ease;
    filter: drop-shadow(0 0 4px rgba(0, 102, 204, 0.6));
}

.button-trace-left {
    left: 0;
    transform: translateY(-50%) translateX(-100%);
}

.button-trace-right {
    right: 0;
    transform: translateY(-50%) translateX(100%);
}

.pcb-submit-button:hover .button-trace-left {
    opacity: 1;
    transform: translateY(-50%) translateX(-80px);
}

.pcb-submit-button:hover .button-trace-right {
    opacity: 1;
    transform: translateY(-50%) translateX(80px);
}

.pcb-submit-button:hover .button-chip {
    transform: scale(1.02);
    border-color: #ffd700;
    box-shadow:
        0 6px 24px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(212, 151, 11, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.pcb-submit-button:active .button-chip {
    transform: scale(0.98);
}

.button-led-indicators {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}

.button-led {
    width: 6px;
    height: 6px;
    background: #ff3333;
    border-radius: 50%;
    box-shadow:
        0 0 6px rgba(255, 51, 51, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
    animation: buttonLedBlink 2s ease-in-out infinite;
}

.button-led:nth-child(2) {
    animation-delay: 0.3s;
    background: #ffdd33;
    box-shadow:
        0 0 6px rgba(255, 221, 51, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
}

.button-led:nth-child(3) {
    animation-delay: 0.6s;
    background: #33ff66;
    box-shadow:
        0 0 6px rgba(51, 255, 102, 0.6),
        inset 0 1px 1px rgba(255, 255, 255, 0.3);
}

@keyframes buttonLedBlink {
    0%, 100% {
        opacity: 0.3;
        filter: brightness(0.5);
    }
    50% {
        opacity: 1;
        filter: brightness(1.2);
    }
}

.pcb-submit-button:hover .button-led {
    animation-duration: 0.8s;
}

/* Footer */
.footer {
    background-color: var(--primary-bg);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.footer p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--accent-hover);
}

.footer-links span {
    color: var(--text-secondary);
}

/* Scroll Reveal Animation */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    section {
        padding: 80px 0;
    }

    .section-title {
        font-size: 40px;
        margin-bottom: 40px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-text .section-title {
        text-align: center;
    }

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

    .stat h3 {
        font-size: 32px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .pcb-form-container {
        padding: 24px;
    }

    .chip-content {
        font-size: 14px;
        letter-spacing: 2px;
    }

    .pcb-submit-button {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .cta-button {
        padding: 14px 32px;
        font-size: 16px;
    }
}