/* Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Professional Color System */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Neutral Colors */
    --neutral-0: #ffffff;
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;
    
    /* Accent Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --purple: #8b5cf6;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    color: var(--neutral-700);
    background-color: var(--neutral-0);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container System */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: var(--primary-600);
    transition: all var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.025em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu a.active {
    color: white;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.15);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-2);
    background: none;
    border: none;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.hamburger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.bar {
    width: 20px;
    height: 2px;
    background: white;
    margin: 2px 0;
    transition: var(--transition-normal);
    border-radius: var(--radius-full);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    color: white;
    padding: var(--space-24) 0 var(--space-16);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-4.0.3') center/cover no-repeat;
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-6);
    backdrop-filter: blur(10px);
}

.badge-icon {
    font-size: 1.1em;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--space-8);
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-12);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--neutral-0);
    color: var(--primary-600);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: var(--neutral-50);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.section-description {
    font-size: 1.25rem;
    color: var(--neutral-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Services Section */
.services {
    padding: var(--space-24) 0;
    background: var(--neutral-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.service-card {
    background: var(--neutral-0);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--neutral-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-200);
}

.service-card.featured {
    border: 2px solid var(--primary-200);
    background: linear-gradient(135deg, var(--neutral-0) 0%, var(--primary-50) 100%);
}

.service-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: white;
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.service-badge {
    padding: var(--space-2) var(--space-3);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(10px);
}

.service-content {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-3);
}

.service-content p {
    color: var(--neutral-600);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.service-features {
    list-style: none;
    margin-bottom: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    color: var(--neutral-700);
    font-size: 0.9rem;
}

.service-features svg {
    color: var(--success);
    flex-shrink: 0;
}

.service-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-top: 1px solid var(--neutral-200);
    background: var(--neutral-50);
}

.service-price {
    font-weight: 700;
    color: var(--neutral-900);
    font-size: 1.1rem;
}

.service-cta {
    padding: var(--space-3) var(--space-5);
    background: var(--primary-600);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.service-cta:hover {
    background: var(--primary-700);
    transform: translateY(-1px);
}

/* About Section */
.about {
    padding: var(--space-24) 0;
    background: var(--neutral-0);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.about-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.about-story h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

.about-story p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--neutral-600);
    margin-bottom: var(--space-4);
}

.about-story p:last-child {
    margin-bottom: 0;
}

.tech-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.stack-section h4 {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--neutral-800);
    margin-bottom: var(--space-3);
}

.stack-section svg {
    color: var(--primary-600);
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tech-item {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--neutral-100);
    color: var(--neutral-700);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tech-item.primary {
    background: var(--primary-600);
    color: white;
}

.tech-item.ai-item {
    background: linear-gradient(135deg, var(--purple) 0%, #a855f7 100%);
    color: white;
    position: relative;
}

.ai-sparkle {
    font-size: 0.8em;
}

.about-benefits {
    display: grid;
    gap: var(--space-4);
}

.benefit-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--neutral-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.benefit-card:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    transform: translateY(-2px);
}

.benefit-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-600);
    color: white;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.benefit-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
}

.benefit-card p {
    color: var(--neutral-600);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* Contact Section */
.contact {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    color: white;
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?ixlib=rb-4.0.3') center/cover no-repeat;
    opacity: 0.1;
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact-hero {
    text-align: center;
    margin-bottom: var(--space-16);
}

.contact h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--space-4);
}

.contact-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto;
}

.contact-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.form-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--primary-600);
    color: white;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
}

.form-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
}

.form-header p {
    color: var(--neutral-600);
    line-height: 1.6;
}

.professional-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--neutral-800);
    font-weight: 600;
    font-size: 0.9rem;
}

.required {
    color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    background: var(--neutral-0);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23666'%3E%3Cpath d='M8 12L3 7h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.input-border {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    transform: translateX(-50%);
    transition: width var(--transition-normal);
}

.form-group input:focus ~ .input-border,
.form-group select:focus ~ .input-border,
.form-group textarea:focus ~ .input-border {
    width: 100%;
}

.form-actions {
    margin-top: var(--space-6);
}

.submit-btn {
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background: var(--primary-600);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.submit-btn:hover {
    background: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.form-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding: var(--space-3);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-lg);
    color: var(--success);
    font-size: 0.875rem;
    text-align: center;
}

.contact-info {
    display: grid;
    gap: var(--space-4);
}

.contact-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    text-align: center;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-600);
    color: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
}

.contact-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
}

.contact-card p {
    color: var(--neutral-600);
    font-size: 0.9rem;
    margin-bottom: var(--space-3);
}

.contact-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    background: var(--primary-600);
    color: white;
}

.contact-badge.success {
    background: var(--success);
}

.contact-badge.premium {
    background: var(--purple);
}

.contact-badge.info {
    background: var(--primary-600);
}

.contact-badge.quality {
    background: var(--warning);
}

/* Form feedback and validation */
.form-feedback {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: var(--space-2);
    min-height: 20px;
}

.char-counter {
    font-size: 0.8rem;
    color: var(--neutral-500);
    transition: color var(--transition-fast);
}

.char-counter.valid {
    color: var(--success);
}

.char-counter.invalid {
    color: var(--error);
}

.error-message {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: var(--space-1);
    font-weight: 500;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    min-height: 20px;
}

.error-message.show {
    opacity: 1;
    transform: translateY(0);
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group.success input,
.form-group.success select,
.form-group.success textarea {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Footer */
footer {
    background: var(--neutral-900);
    color: var(--neutral-300);
    text-align: center;
    padding: var(--space-8) 0;
}

.footer-links {
    margin-top: var(--space-4);
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-400);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-container {
        padding: var(--space-4);
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 77px;
        flex-direction: column;
        background: var(--primary-600);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-xl);
        padding: var(--space-8) var(--space-4);
        gap: var(--space-4);
        z-index: var(--z-dropdown);
    }
    
    .nav-menu a {
        color: white !important;
        background: transparent !important;
        font-size: 1.1rem;
        padding: var(--space-4) var(--space-6);
        border-radius: var(--radius-lg);
        display: block;
        width: 100%;
        max-width: 200px;
        margin: 0 auto;
    }
    
    .nav-menu a:hover {
        color: white !important;
        background: rgba(255, 255, 255, 0.1) !important;
    }
    
    .nav-menu a.active {
        color: white !important;
        background: rgba(255, 255, 255, 0.15) !important;
        font-weight: 600;
    }

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

    .hamburger {
        display: flex;
    }

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

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    
    /* Hero */
    .hero {
        padding: var(--space-24) 0 var(--space-16);
        min-height: 100vh;
    }
    
    .hero-content {
        padding: 0 var(--space-4);
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: var(--space-2) var(--space-3);
    }
    
    .hero-title {
        font-size: clamp(2.2rem, 8vw, 3.5rem);
        margin-bottom: var(--space-5);
    }
    
    .hero-description {
        font-size: 1.1rem;
        margin-bottom: var(--space-6);
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-5);
        margin-bottom: var(--space-8);
    }
    
    .stat-item {
        padding: var(--space-3);
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-lg);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--space-3);
    }
    
    .btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
        font-size: 1.05rem;
        padding: var(--space-4) var(--space-5);
    }
    
    /* Section Headers */
    .section-header {
        margin-bottom: var(--space-12);
        padding: 0 var(--space-2);
    }
    
    .section-badge {
        font-size: 0.8rem;
    }
    
    .section-description {
        font-size: 1.1rem;
    }
    
    /* Services */
    .services {
        padding: var(--space-20) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        margin-top: var(--space-10);
    }
    
    .service-card {
        margin: 0 var(--space-2);
    }
    
    .service-header {
        padding: var(--space-5);
    }
    
    .service-content {
        padding: var(--space-5);
    }
    
    .service-features li {
        font-size: 0.95rem;
        padding: var(--space-3) 0;
    }
    
    /* About */
    .about {
        padding: var(--space-20) 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .about-story h3 {
        font-size: 1.5rem;
    }
    
    .about-story p {
        font-size: 1.05rem;
    }
    
    .tech-items {
        justify-content: center;
    }
    
    .benefit-card {
        padding: var(--space-4);
        margin: 0 var(--space-2);
    }
    
    /* Contact */
    .contact {
        padding: var(--space-20) 0;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        order: -1;
    }
    
    .contact-card {
        padding: var(--space-5);
        margin: 0 var(--space-2);
    }
    
    .contact-form-wrapper {
        padding: var(--space-6);
        margin: 0 var(--space-2);
    }
    
    .form-header h3 {
        font-size: 1.5rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 1rem;
        padding: var(--space-4);
    }
    
    .submit-btn {
        font-size: 1.05rem;
        padding: var(--space-4) var(--space-5);
    }
    
    /* Form validation mobile adjustments */
    .form-feedback {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-1);
    }
    
    .char-counter {
        font-size: 0.85rem;
        text-align: left;
        order: 1;
    }
    
    .error-message {
        font-size: 0.85rem;
        margin-top: var(--space-2);
        order: 2;
    }
    
    /* Spacing adjustments */
    .container {
        padding: 0 var(--space-4);
    }
    
    /* Footer */
    footer {
        padding: var(--space-8) var(--space-4);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-3);
        align-items: center;
    }
}

@media (max-width: 480px) {
    /* Navigation */
    .nav-container {
        padding: var(--space-3);
    }
    
    .logo h1 {
        font-size: 1.375rem;
    }
    
    .nav-menu {
        top: 69px;
        padding: var(--space-6) var(--space-3);
        gap: var(--space-3);
    }
    
    .nav-menu a {
        font-size: 1rem;
        padding: var(--space-3) var(--space-5);
        max-width: 180px;
    }
    
    /* Hero */
    .hero-title {
        font-size: clamp(2rem, 9vw, 3rem);
        line-height: 1.15;
    }
    
    .hero-description {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: var(--space-2) var(--space-3);
    }
    
    .stat-item {
        padding: var(--space-3) var(--space-4);
    }
    
    .stat-number {
        font-size: 1rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .btn {
        font-size: 1rem;
        padding: var(--space-4);
        max-width: 280px;
    }
    
    /* Section Headers */
    .section-header h2 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
        line-height: 1.3;
    }
    
    .section-description {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .section-badge {
        font-size: 0.75rem;
        padding: var(--space-2) var(--space-3);
    }
    
    /* Services */
    .services,
    .about,
    .contact {
        padding: var(--space-16) 0;
    }
    
    .service-card {
        margin: 0 var(--space-1);
    }
    
    .service-content {
        padding: var(--space-4);
    }
    
    .service-header {
        padding: var(--space-4);
    }
    
    .service-content h3 {
        font-size: 1.3rem;
    }
    
    .service-content p {
        font-size: 0.95rem;
    }
    
    .service-features li {
        font-size: 0.9rem;
        padding: var(--space-2) 0;
    }
    
    .service-footer {
        padding: var(--space-4);
    }
    
    .service-price {
        font-size: 1rem;
    }
    
    .service-cta {
        font-size: 0.8rem;
        padding: var(--space-2) var(--space-4);
    }
    
    /* About */
    .about-story h3 {
        font-size: 1.375rem;
    }
    
    .about-story p {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .stack-section h4 {
        font-size: 1rem;
    }
    
    .tech-item {
        font-size: 0.8rem;
        padding: var(--space-2) var(--space-3);
    }
    
    .benefit-card {
        padding: var(--space-4);
        margin: 0 var(--space-1);
        gap: var(--space-3);
    }
    
    .benefit-icon {
        width: 40px;
        height: 40px;
    }
    
    .benefit-card h4 {
        font-size: 0.95rem;
    }
    
    .benefit-card p {
        font-size: 0.85rem;
    }
    
    /* Contact */
    .contact h2 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
    
    .contact-subtitle {
        font-size: 1rem;
    }
    
    .contact-card {
        padding: var(--space-4);
        margin: 0 var(--space-1);
    }
    
    .contact-form-wrapper {
        padding: var(--space-5);
        margin: 0 var(--space-1);
    }
    
    .form-icon {
        width: 52px;
        height: 52px;
    }
    
    .form-header h3 {
        font-size: 1.375rem;
    }
    
    .form-header p {
        font-size: 0.9rem;
    }
    
    .form-group label {
        font-size: 0.85rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 0.95rem;
        padding: var(--space-3);
    }
    
    .submit-btn {
        font-size: 1rem;
        padding: var(--space-4);
    }
    
    .form-note {
        font-size: 0.8rem;
        padding: var(--space-2);
    }
    
    /* Form validation extra small mobile adjustments */
    .form-feedback {
        margin-top: var(--space-2);
        min-height: 18px;
    }
    
    .char-counter {
        font-size: 0.8rem;
    }
    
    .error-message {
        font-size: 0.8rem;
        margin-top: var(--space-1);
        min-height: 18px;
    }
    
    .card-icon {
        width: 40px;
        height: 40px;
    }
    
    .contact-card h4 {
        font-size: 0.95rem;
    }
    
    .contact-card p {
        font-size: 0.85rem;
    }
    
    .contact-badge {
        font-size: 0.7rem;
        padding: var(--space-1) var(--space-2);
    }
    
    /* Container adjustments */
    .container {
        padding: 0 var(--space-3);
    }
    
    /* Footer */
    .footer-links a {
        font-size: 0.85rem;
    }
}

/* Dark mode support (future enhancement) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here */
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --neutral-600: #000000;
        --neutral-400: #000000;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .scroll-indicator {
        animation: none;
    }
}