/* Modern Professional Portfolio CSS */

:root {
    /* Modern Color Palette */
    --primary-color: #2563eb; /* Professional blue */
    --secondary-color: #0f172a; /* Deep navy */
    --accent-color: #06b6d4; /* Cyan accent */
    --success-color: #10b981; /* Green */
    --warning-color: #f59e0b; /* Amber */
    --danger-color: #ef4444; /* Red */
    
    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
    
    /* Spacing */
    --section-padding: 120px 0;
    --container-padding: 0 2rem;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --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);
}

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

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

body {
    font-family: var(--font-primary);
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gray-900), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader {
    text-align: center;
    color: white;
}

.loader-text {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

.loader-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    width: 0;
    animation: loadProgress 2s ease-out forwards;
}

@keyframes loadProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

body.loading {
    overflow: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: rgba(248, 250, 252, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.logo-text::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transition: var(--transition-smooth);
}

.nav-logo:hover .logo-text::after {
    width: 100%;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    margin-left: 2rem;
}

.current-lang,
.other-lang {
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 0.25rem;
    border-radius: 4px;
}

.other-lang:hover {
    transform: scale(1.1);
    background: rgba(37, 99, 235, 0.1);
}

.lang-separator {
    color: var(--gray-400);
    font-weight: 300;
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: var(--transition-smooth);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Mobile Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--gray-700);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: 3px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 120%;
    height: 120%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(16, 185, 129, 0.15) 0%, transparent 50%);
    animation: dynamicFloat 8s ease-in-out infinite;
}

@keyframes dynamicFloat {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg) scale(1); 
        opacity: 0.7;
    }
    25% { 
        transform: translateY(-20px) rotate(2deg) scale(1.05); 
        opacity: 1;
    }
    50% { 
        transform: translateY(-10px) rotate(-1deg) scale(1.02); 
        opacity: 0.8;
    }
    75% { 
        transform: translateY(-30px) rotate(1.5deg) scale(1.08); 
        opacity: 0.9;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 6rem 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-subtitle {
    display: block;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 500;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image-placeholder {
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    border-radius: var(--border-radius-lg);
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: imageFloat 6s ease-in-out infinite;
    transition: var(--transition-smooth);
}

.hero-image-placeholder:hover {
    transform: scale(1.02) rotate(1deg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

@keyframes imageFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

.hero-image-placeholder::before {
    content: 'Professional Photo Placeholder';
    color: var(--gray-500);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    animation: textPulse 3s ease-in-out infinite;
}

@keyframes textPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.3);
    animation: buttonPulse 0.6s ease;
}

@keyframes buttonPulse {
    0% { transform: translateY(-4px) scale(1.02); }
    50% { transform: translateY(-6px) scale(1.05); }
    100% { transform: translateY(-4px) scale(1.02); }
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transition: var(--transition-smooth);
    z-index: -1;
}

.btn-secondary:hover::before {
    left: 0;
}

.btn-secondary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border: 2px solid var(--primary-color);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

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

/* Section Styles */
section {
    padding: var(--section-padding);
    position: relative;
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: white;
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(6, 182, 212, 0.05));
    z-index: -1;
}

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

.about-intro {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about p {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-smooth);
}

.skill-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.skill-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.about-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: transform 0.6s ease;
}

.about-image:hover {
    transform: scale(1.02) rotateY(2deg);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

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

/* Services Overview in About Section */
.services-overview {
    margin-top: 2rem;
}

.services-overview h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

/* Clickable skill items */
.skill-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.skill-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transition: var(--transition-smooth);
    z-index: -1;
    border-radius: var(--border-radius);
}

.skill-link:hover::before {
    left: 0;
}

.skill-link:hover {
    color: white;
    transform: translateX(8px) scale(1.03);
    border-left-color: transparent;
    box-shadow: var(--shadow-lg);
}

.skill-link:hover i {
    color: white;
    transform: scale(1.1);
}

/* Services Section */
.services {
    position: relative;
    background: var(--gray-900);
    color: white;
    overflow: hidden;
}

.services-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 20%, rgba(37, 99, 235, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(6, 182, 212, 0.3) 0%, transparent 50%);
    animation: float 8s ease-in-out infinite reverse;
}

.services .section-title {
    color: white;
}

.services .section-subtitle,
.services .title-underline {
    background: linear-gradient(135deg, var(--accent-color), #22d3ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.services .title-underline {
    background: linear-gradient(135deg, var(--accent-color), #22d3ee);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.service-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-15px) rotateY(5deg) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    animation: cardFloat 0.8s ease;
}

@keyframes cardFloat {
    0% { transform: translateY(-15px) rotateY(5deg) scale(1.02); }
    50% { transform: translateY(-20px) rotateY(3deg) scale(1.05); }
    100% { transform: translateY(-15px) rotateY(5deg) scale(1.02); }
}

.service-image {
    width: 100%;
    height: 200px;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 2;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.service-card > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-features li::before {
    content: '→';
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Certifications Section */
.certifications {
    background: white;
    position: relative;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.cert-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.cert-card:hover::before {
    transform: scaleX(1);
}

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

.cert-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.cert-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.cert-info p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.additional-certs {
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    text-align: center;
}

.additional-certs h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 2rem;
}

.cert-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.cert-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cert-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* Certification Verification Section */
.cert-verification {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    text-align: center;
    color: white;
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
}

.cert-verification::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 10s linear infinite;
}

.cert-verification h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cert-verification p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.cert-verify-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    position: relative;
    z-index: 1;
    transition: var(--transition-smooth);
}

.cert-verify-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cert-verify-btn i {
    margin-right: 0.5rem;
}

/* Contact Section */
.contact {
    background: var(--secondary-color);
    color: white;
    position: relative;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.2) 0%, transparent 50%);
    animation: float 10s ease-in-out infinite;
}

.contact .section-title {
    color: white;
}

.contact .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
}

.contact-item:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.15);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.contact-details a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact-details a:hover {
    color: white;
}

.contact-details p {
    color: rgba(255, 255, 255, 0.8);
}

.contact-cta {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    text-align: center;
    max-width: 600px;
    width: 100%;
}

.cta-content h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 2rem 0;
}

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

.footer-text p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: flex;
    gap: 1rem;
}

.footer-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image-placeholder {
        height: 300px;
    }
    
    .about-image {
        margin-top: 2rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
        --container-padding: 0 1rem;
    }
    
    /* Enhanced mobile navigation */
    .nav-container {
        height: 70px;
        padding: 0 1rem;
    }
    
    .nav-logo {
        font-size: 1rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(248, 250, 252, 0.98);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        gap: 1.5rem;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
        animation: slideInRight 0.3s ease;
    }
    
    @keyframes slideInRight {
        from { transform: translateX(-20px); opacity: 0; }
        to { transform: translateX(0); opacity: 1; }
    }
    
    .nav-item {
        transform: translateY(20px);
        opacity: 0;
        animation: fadeInUp 0.3s ease forwards;
    }
    
    .nav-menu.active .nav-item:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.active .nav-item:nth-child(2) { animation-delay: 0.2s; }
    .nav-menu.active .nav-item:nth-child(3) { animation-delay: 0.3s; }
    .nav-menu.active .nav-item:nth-child(4) { animation-delay: 0.4s; }
    .nav-menu.active .nav-item:nth-child(5) { animation-delay: 0.5s; }
    
    @keyframes fadeInUp {
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    /* Mobile language switcher */
    .language-switcher {
        margin-left: 0;
        margin-right: 1rem;
    }
    
    /* Enhanced mobile hero */
    .hero {
        min-height: 100vh;
        padding-top: 70px;
    }
    
    .hero-content {
        padding: 2rem 1rem;
        text-align: center;
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        justify-content: center;
        gap: 1rem;
    }
    
    .btn {
        padding: 1rem 1.5rem;
        font-size: 0.95rem;
        min-width: 150px;
    }
    
    /* Mobile-optimized touch targets */
    .btn:active {
        transform: scale(0.95);
    }
    
    .service-card:active,
    .cert-card:active {
        transform: scale(0.98);
    }
    
    /* Mobile sections */
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .skill-item {
        padding: 1.2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card {
        padding: 2rem 1.5rem;
        margin-bottom: 1rem;
    }
    
    .service-card:hover {
        transform: translateY(-8px) scale(1.01);
        animation: none;
    }
    
    .cert-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 1rem;
    }
    
    .cert-card {
        padding: 1.5rem;
    }
    
    .cert-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-cta {
        padding: 2rem 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    /* Mobile image placeholders */
    .hero-image-placeholder {
        height: 250px;
        margin: 1rem 0;
    }
    
    .about-image {
        margin: 1rem 0;
    }
    
    .hero-image-placeholder::before {
        font-size: 0.8rem;
    }
    
    
    /* Mobile cert verification */
    .cert-verification {
        padding: 2rem 1.5rem;
    }
    
    .cert-verification h4 {
        font-size: 1.2rem;
    }
    
    .cert-verify-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
}