/* Variables CSS - Dark Mode Theme */
:root {
    /* Primary Colors */
    --primary-dark: #0b0b0b;
    --secondary-dark: #1e1e1e;
    --tertiary-dark: #2a2a2a;
    
    /* Accent Colors */
    --accent-red: #c1121f;
    --accent-red-hover: #a00e1a;
    --accent-red-light: rgba(193, 18, 31, 0.1);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #c7c7c7;
    --text-muted: #9a9a9a;
    --text-dim: #6a6a6a;
    
    /* Background Colors */
    --bg-primary: #0b0b0b;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2a2a2a;
    --bg-card: #1a1a1a;
    --bg-hover: #2a2a2a;
    
    /* Border Colors */
    --border-primary: #333333;
    --border-secondary: #2a2a2a;
    --border-accent: #c1121f;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(193, 18, 31, 0.3);
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 800;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Selection */
::selection {
    background: var(--accent-red);
    color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-red);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-red-hover);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header et Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(11, 11, 11, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-primary);
    transition: var(--transition-normal);
}

.nav {
    padding: 0rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    color: var(--text-primary);
}

.nav-logo svg {
    filter: drop-shadow(0 0 10px rgba(193, 18, 31, 0.3));
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: var(--transition-normal);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--accent-red);
}

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--secondary-dark) 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(193, 18, 31, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(193, 18, 31, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.float-element {
    position: absolute;
    background: var(--accent-red);
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.float-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.float-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.float-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    color: var(--text-primary);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

.highlight {
    color: var(--accent-red);
    position: relative;
    text-shadow: 0 0 20px rgba(193, 18, 31, 0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: var(--font-weight-light);
    margin-bottom: 2rem;
    color: var(--text-secondary);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

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

.circuit-board {
    width: 400px;
    height: 400px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pcb-board {
    width: 100%;
    height: 100%;
    position: relative;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border-radius: 16px;
    border: 2px solid var(--accent-red);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.circuit-traces {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.trace {
    stroke-dasharray: 5, 5;
    animation: trace-flow 2s linear infinite;
}

@keyframes trace-flow {
    0% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: -10; }
}

.via {
    animation: via-pulse 2s ease-in-out infinite;
}

@keyframes via-pulse {
    0%, 100% { r: 4; opacity: 1; }
    50% { r: 6; opacity: 0.7; }
}

.microcontroller {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 80px;
    background: linear-gradient(135deg, #333333 0%, #1a1a1a 100%);
    border: 2px solid var(--accent-red);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    z-index: 2;
    box-shadow: 0 0 20px rgba(193, 18, 31, 0.3);
    animation: mcu-glow 3s ease-in-out infinite;
}

@keyframes mcu-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(193, 18, 31, 0.3); }
    50% { box-shadow: 0 0 30px rgba(193, 18, 31, 0.6); }
}

.mcu-pins {
    width: 100%;
    height: 8px;
    background: repeating-linear-gradient(
        90deg,
        var(--accent-red) 0px,
        var(--accent-red) 2px,
        transparent 2px,
        transparent 6px
    );
}

.mcu-body {
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
    font-size: 0.9rem;
    text-align: center;
    padding: 0.5rem;
}

.component {
    position: absolute;
    z-index: 3;
    transition: var(--transition-normal);
}

.component:hover {
    transform: scale(1.1);
    filter: brightness(1.2);
}

.component-body {
    background: var(--bg-card);
    border: 1px solid var(--accent-red);
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 0.7rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.resistor .component-body {
    background: linear-gradient(90deg, #8B4513, #D2691E, #8B4513);
    color: var(--text-primary);
}

.capacitor .component-body {
    background: linear-gradient(90deg, #4169E1, #1E90FF);
    color: var(--text-primary);
}

.led .component-body {
    background: var(--accent-red);
    animation: led-blink 2s ease-in-out infinite;
}

@keyframes led-blink {
    0%, 100% { opacity: 1; box-shadow: 0 0 5px rgba(193, 18, 31, 0.5); }
    50% { opacity: 0.6; box-shadow: 0 0 15px rgba(193, 18, 31, 0.8); }
}

.sensor .component-body {
    background: linear-gradient(135deg, #2E8B57, #3CB371);
    color: var(--text-primary);
}

.data-pulse {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-red);
    border-radius: 50%;
    z-index: 4;
    box-shadow: 0 0 10px rgba(193, 18, 31, 0.8);
}

.pulse-1 {
    top: 100px;
    left: 50px;
    animation: data-flow-1 3s linear infinite;
}

.pulse-2 {
    top: 200px;
    left: 150px;
    animation: data-flow-2 3s linear infinite 1s;
}

.pulse-3 {
    top: 300px;
    left: 100px;
    animation: data-flow-3 3s linear infinite 2s;
}

@keyframes data-flow-1 {
    0% { transform: translate(0, 0); opacity: 1; }
    25% { transform: translate(100px, 0); opacity: 1; }
    50% { transform: translate(100px, 100px); opacity: 1; }
    75% { transform: translate(200px, 100px); opacity: 1; }
    100% { transform: translate(200px, 100px); opacity: 0; }
}

@keyframes data-flow-2 {
    0% { transform: translate(0, 0); opacity: 1; }
    25% { transform: translate(0, -100px); opacity: 1; }
    50% { transform: translate(-100px, -100px); opacity: 1; }
    75% { transform: translate(-100px, -200px); opacity: 1; }
    100% { transform: translate(-100px, -200px); opacity: 0; }
}

@keyframes data-flow-3 {
    0% { transform: translate(0, 0); opacity: 1; }
    25% { transform: translate(100px, 0); opacity: 1; }
    50% { transform: translate(100px, -100px); opacity: 1; }
    75% { transform: translate(200px, -100px); opacity: 1; }
    100% { transform: translate(200px, -100px); opacity: 0; }
}

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background-color: var(--accent-red);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--accent-red);
}

.btn-secondary:hover {
    background-color: var(--accent-red);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Section Expertise */
.expertise {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
    position: relative;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-red);
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(193, 18, 31, 0.5);
}

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

.expertise-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-primary);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-red), transparent);
    transform: translateX(-100%);
    transition: var(--transition-slow);
}

.expertise-card:hover::before {
    transform: translateX(100%);
}

.expertise-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-red);
    box-shadow: var(--shadow-glow);
}

.expertise-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--accent-red-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.expertise-card:hover .expertise-icon {
    background: var(--accent-red);
    transform: scale(1.1);
}

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

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

/* Section About */
.about {
    padding: 6rem 0;
    background-color: var(--bg-primary);
}

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

.about-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.about-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 8px;
    border-left: 3px solid var(--accent-red);
}

.about-item h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-semibold);
    color: var(--accent-red);
    margin-bottom: 0.5rem;
}

.about-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-tertiary));
    color: var(--text-primary);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-primary);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-red) 0%, transparent 70%);
    opacity: 0.1;
    animation: pulse-bg 3s ease-in-out infinite;
}

@keyframes pulse-bg {
    0%, 100% { transform: scale(0.8); opacity: 0.1; }
    50% { transform: scale(1.2); opacity: 0.2; }
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-red);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    font-size: 2rem;
    font-weight: var(--font-weight-black);
    margin-bottom: 0.5rem;
    color: var(--accent-red);
    text-shadow: 0 0 10px rgba(193, 18, 31, 0.5);
}

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

/* Section Projects */
.projects {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

.project-showcase {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
}

.project-header {
    background: linear-gradient(135deg, var(--accent-red), var(--accent-red-hover));
    color: var(--text-primary);
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.project-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: 20px 20px;
    animation: bg-move 10s linear infinite;
}

@keyframes bg-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

.pyesauto-logo {
    font-size: 2rem;
    font-weight: var(--font-weight-black);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

.project-badges {
    display: flex;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
}

.badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.badge:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.project-content {
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.project-description h3 {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

.features h4 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--accent-red);
    margin-bottom: 1rem;
}

.features ul {
    list-style: none;
}

.features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
    transition: var(--transition-fast);
}

.features li:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.features li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--accent-red);
    font-size: 0.8rem;
}

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

.project-image {
    width: 100%;
    max-width: 500px;
    height: 450px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-primary);
    transition: var(--transition-normal);
}

.project-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-red);
}

.process-flow {
    padding: 2rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-primary);
}

.process-flow h4 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--accent-red);
    margin-bottom: 1.5rem;
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.process-step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 8px;
    transition: var(--transition-normal);
    border: 1px solid var(--border-primary);
}

.process-step:hover {
    background: var(--accent-red-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.step-number {
    background: var(--accent-red);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.step-content h5 {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

/* Section Contact */
.contact {
    padding: 6rem 0;
    background-color: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    transition: var(--transition-normal);
}

.contact-item:hover {
    border-color: var(--accent-red);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-red-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-normal);
}

.contact-item:hover .contact-icon {
    background: var(--accent-red);
    transform: rotate(360deg);
}

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

.contact-details p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-primary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(193, 18, 31, 0.1);
    background: var(--bg-tertiary);
}

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

.form-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-weight: var(--font-weight-medium);
    display: none;
}

.form-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 2rem 0;
    border-top: 1px solid var(--border-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo svg {
    filter: drop-shadow(0 0 10px rgba(193, 18, 31, 0.3));
}

.footer-logo p {
    font-weight: var(--font-weight-semibold);
    font-size: 1.1rem;
}

.footer-info {
    text-align: right;
}

.footer-info p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.footer-info p:first-child {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(11, 11, 11, 0.98);
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        border-bottom: 1px solid var(--border-primary);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .circuit-board {
        width: 300px;
        height: 300px;
    }

    .microcontroller {
        width: 90px;
        height: 60px;
    }

    .component-body {
        font-size: 0.6rem;
        padding: 3px 6px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .project-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .footer-info {
        text-align: center;
    }

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

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

    .project-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

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

    .project-badges {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-container {
        padding: 0 15px;
    }

    .expertise-card,
    .contact-item,
    .contact-form {
        padding: 1.5rem;
    }
}

/* Accessibility */
.keyboard-navigation *:focus {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .hero-buttons,
    .contact-form {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
}