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

:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #111111;
    --card-bg: rgba(20, 20, 20, 0.8);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --accent-primary: #00d4ff;
    --accent-secondary: #ff0080;
    --accent-tertiary: #7c3aed;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 50%, #ff0080 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    --shadow-primary: 0 20px 40px rgba(0, 212, 255, 0.15);
    --shadow-secondary: 0 10px 30px rgba(0, 0, 0, 0.5);
    --blur-amount: 20px;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 0, 128, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 1200px;
    background: rgba(20, 20, 20, 0.9);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    z-index: 1000;
    padding: 1rem 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar:hover {
    box-shadow: var(--shadow-primary);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.nav-logo i {
    margin-right: 0.8rem;
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
    0% { filter: drop-shadow(0 0 5px rgba(0, 212, 255, 0.5)); }
    100% { filter: drop-shadow(0 0 20px rgba(124, 58, 237, 0.8)); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 25px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.nav-link:hover::before {
    opacity: 0.1;
}

.nav-link.active {
    color: var(--text-primary);
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

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

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 0.5rem;
    border-radius: 25px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.lang-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.lang-btn.active {
    color: var(--text-primary);
    background: var(--gradient-primary);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--secondary-bg);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0.8;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200%;
    height: 200%;
    background:
        conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.1), transparent, rgba(124, 58, 237, 0.1), transparent);
    animation: rotate 20s linear infinite;
    transform: translate(-50%, -50%);
    z-index: 1;
}

@keyframes rotate {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 6rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; transform: scaleX(1); }
    50% { opacity: 1; transform: scaleX(1.05); }
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
}

.hero-description-extended {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 650px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    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, 0.2), transparent);
    transition: left 0.5s;
}

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

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

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 212, 255, 0.25);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-secondary);
}

/* AI Animation */
.ai-animation {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 500px;
    position: relative;
}

.neural-network {
    position: relative;
    width: 400px;
    height: 400px;
    perspective: 1000px;
}

.neural-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    animation: rotate3d 15s linear infinite;
}

.neural-layer:nth-child(2) {
    animation-delay: -5s;
    animation-direction: reverse;
}

.neural-layer:nth-child(3) {
    animation-delay: -10s;
}

@keyframes rotate3d {
    0% { transform: rotateY(0deg) rotateX(0deg); }
    33% { transform: rotateY(120deg) rotateX(20deg); }
    66% { transform: rotateY(240deg) rotateX(-20deg); }
    100% { transform: rotateY(360deg) rotateX(0deg); }
}

.node {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow:
        0 0 20px rgba(0, 212, 255, 0.6),
        0 0 40px rgba(0, 212, 255, 0.4),
        0 0 60px rgba(0, 212, 255, 0.2);
    animation: nodePulse 3s ease-in-out infinite;
}

.node::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    width: 16px;
    height: 16px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    animation: nodeRing 2s ease-in-out infinite;
}

@keyframes nodePulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.5);
        opacity: 1;
    }
}

@keyframes nodeRing {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    100% {
        transform: scale(3);
        opacity: 0;
    }
}

/* Node positions for 3D effect */
.neural-layer:nth-child(1) .node:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.neural-layer:nth-child(1) .node:nth-child(2) { top: 20%; right: 20%; animation-delay: 0.5s; }
.neural-layer:nth-child(1) .node:nth-child(3) { top: 50%; left: 50%; animation-delay: 1s; }
.neural-layer:nth-child(1) .node:nth-child(4) { bottom: 20%; left: 20%; animation-delay: 1.5s; }
.neural-layer:nth-child(1) .node:nth-child(5) { bottom: 20%; right: 20%; animation-delay: 2s; }

.neural-layer:nth-child(2) .node:nth-child(1) { top: 30%; left: 30%; animation-delay: 0.3s; }
.neural-layer:nth-child(2) .node:nth-child(2) { top: 30%; right: 30%; animation-delay: 0.8s; }
.neural-layer:nth-child(2) .node:nth-child(3) { bottom: 30%; left: 30%; animation-delay: 1.3s; }
.neural-layer:nth-child(2) .node:nth-child(4) { bottom: 30%; right: 30%; animation-delay: 1.8s; }

.neural-layer:nth-child(3) .node:nth-child(1) { top: 40%; left: 40%; animation-delay: 0.6s; }
.neural-layer:nth-child(3) .node:nth-child(2) { top: 40%; right: 40%; animation-delay: 1.1s; }
.neural-layer:nth-child(3) .node:nth-child(3) { bottom: 40%; left: 40%; animation-delay: 1.6s; }

.connection {
    position: absolute;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        rgba(0, 212, 255, 0.6),
        rgba(124, 58, 237, 0.6),
        transparent
    );
    animation: dataFlow 2s ease-in-out infinite;
    transform-origin: left center;
}

@keyframes dataFlow {
    0%, 100% {
        opacity: 0.3;
        transform: scaleX(0);
    }
    50% {
        opacity: 1;
        transform: scaleX(1);
    }
}

/* Floating particles */
.ai-animation::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(0, 212, 255, 0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(124, 58, 237, 0.3), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255, 0, 128, 0.3), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(0, 212, 255, 0.3), transparent);
    background-repeat: repeat;
    background-size: 150px 100px;
    animation: floatParticles 20s linear infinite;
}

@keyframes floatParticles {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-100px); }
}

/* Section Styles */
section {
    padding: 8rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
    position: relative;
}

.section-header h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Services Section */
.services {
    background: var(--secondary-bg);
    position: relative;
    overflow: hidden;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 30% 20%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 2;
}

.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 25px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-primary);
    border-color: rgba(0, 212, 255, 0.3);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: var(--text-primary);
    font-size: 2.5rem;
    position: relative;
    box-shadow: var(--shadow-primary);
}

.service-icon::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    background: var(--gradient-primary);
    border-radius: 27px;
    opacity: 0.3;
    animation: iconGlow 3s ease-in-out infinite alternate;
    z-index: -1;
}

@keyframes iconGlow {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.1); opacity: 0.6; }
}

.service-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.service-features {
    list-style: none;
    text-align: left;
}

.service-features li {
    padding: 0.8rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 2rem;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.service-card:hover .service-features li {
    color: var(--text-primary);
}

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

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 2;
}

.portfolio-item {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 25px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    group: hover;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.portfolio-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-primary);
    border-color: rgba(0, 212, 255, 0.4);
}

.portfolio-item:hover::before {
    opacity: 0.03;
}

.portfolio-image {
    height: 250px;
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.portfolio-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(124, 58, 237, 0.2) 0%, transparent 50%);
    animation: portfolioGlow 4s ease-in-out infinite alternate;
}

@keyframes portfolioGlow {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

.portfolio-image i {
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.portfolio-content {
    padding: 2.5rem;
}

.portfolio-content h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.portfolio-tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.portfolio-tags span {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
}

.portfolio-tags span:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

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

.about::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background:
        radial-gradient(circle at 80% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 6rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.about-text h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 2rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    position: relative;
}

.about-text h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-intro {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.expertise h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.skill-item i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.skill-item span {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1.1rem;
}

.certification-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 15px;
    margin-bottom: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.certification-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.certification-item i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.certification-item h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.certification-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.stat-item {
    text-align: center;
    padding: 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 25px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.stat-item:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-primary);
}

.stat-item:hover::before {
    opacity: 0.05;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.8rem;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.1rem;
}

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

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 0, 128, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    position: relative;
    z-index: 2;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 212, 255, 0.1);
}

.contact-item i {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.5rem;
    box-shadow: var(--shadow-primary);
}

.contact-item h4 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.contact-form {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 25px;
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.02;
    z-index: -1;
}

.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.2rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.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-primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.contact-form .btn {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.contact-form .btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.contact-form .btn:disabled::before {
    display: none;
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
    z-index: 2;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo i {
    margin-right: 0.8rem;
    font-size: 2.2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.footer-links {
    display: flex;
    gap: 2.5rem;
    background: var(--glass-bg);
    padding: 1rem 2rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.footer-links a::before {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.footer-links a:hover::before {
    width: 100%;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

/* AI Assistant Credit */
.ai-credit {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ai-credit::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.03;
    z-index: -1;
}

.ai-credit p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

.ai-credit .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .navbar {
        width: calc(100% - 20px);
        padding: 0.8rem 1.5rem;
    }

    .hero-container {
        gap: 4rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .about-content {
        gap: 4rem;
    }

    .contact-content {
        gap: 4rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 90px;
        left: 10px;
        right: 10px;
        width: auto;
        max-width: none;
        background: rgba(20, 20, 20, 0.95);
        backdrop-filter: blur(var(--blur-amount));
        border: 1px solid var(--border-color);
        border-radius: 20px;
        flex-direction: column;
        padding: 1.5rem;
        gap: 0.8rem;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1001;
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: 1rem;
        text-align: center;
        border-radius: 10px;
    }

    .hero {
        min-height: 100vh;
        padding: 6rem 0 4rem;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
        margin-bottom: 1.5rem;
    }

    .hero-description {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        max-width: 100%;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        justify-content: center;
    }

    section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 1rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .section-header h2 {
        font-size: 2.2rem;
        margin-bottom: 1rem;
    }

    .section-header p {
        font-size: 1.1rem;
    }

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

    .service-card {
        padding: 2rem 1.5rem;
    }

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

    .portfolio-content {
        padding: 1.5rem;
    }

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

    .about-text h2 {
        font-size: 2.2rem;
        margin-bottom: 1.5rem;
    }

    .about-intro {
        font-size: 1.1rem;
        margin-bottom: 2rem;
    }

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

    .skill-item {
        padding: 1rem;
    }

    .certification-item {
        padding: 1rem;
        margin-bottom: 0.8rem;
    }

    .about-stats {
        gap: 1.5rem;
    }

    .stat-item {
        padding: 1.5rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

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

    .contact-info {
        gap: 1.5rem;
    }

    .contact-item {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .footer {
        padding: 3rem 0 1.5rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-logo {
        font-size: 1.5rem;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
        padding: 0.8rem 1.5rem;
    }

    .footer-social {
        gap: 1rem;
        justify-content: center;
    }

    .footer-social a {
        width: 45px;
        height: 45px;
    }

    .ai-credit {
        padding: 1.5rem;
        margin-top: 1.5rem;
    }

    .ai-credit p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.6rem 0.8rem;
        top: 5px;
        width: calc(100% - 10px);
    }

    .nav-container {
        gap: 0.8rem;
    }

    .nav-logo {
        font-size: 1.3rem;
    }

    .language-switcher {
        padding: 0.3rem;
        gap: 0.3rem;
    }

    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .nav-menu {
        top: 75px;
        left: 5px;
        right: 5px;
        padding: 1rem;
        background: rgba(20, 20, 20, 0.98);
    }

    .hero {
        padding: 5rem 0 3rem;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.1;
    }

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

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .service-card,
    .portfolio-item {
        padding: 1.5rem;
    }

    .service-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .service-card h3 {
        font-size: 1.5rem;
    }

    .portfolio-content h3 {
        font-size: 1.4rem;
    }

    .about-text h2 {
        font-size: 1.8rem;
    }

    .about-stats {
        gap: 1rem;
    }

    .stat-item {
        padding: 1.2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .form-group input,
    .form-group textarea {
        padding: 0.8rem;
        font-size: 0.9rem;
    }

    .btn {
        padding: 0.8rem 1.2rem;
        font-size: 0.9rem;
    }

    .ai-animation {
        height: 250px;
    }

    .neural-network {
        width: 200px;
        height: 200px;
    }

    .footer-logo {
        font-size: 1.3rem;
    }

    .footer-links {
        padding: 0.6rem 1rem;
        gap: 0.8rem;
    }

    .footer-social a {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .ai-credit {
        padding: 1rem;
    }

    .ai-credit p {
        font-size: 0.85rem;
        line-height: 1.5;
    }
}

/* Hamburger Animation */
.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #00b4d8 0%, #6a4c93 50%, #e63946 100%);
}