/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d9a3;
    --secondary-color: #1a1a1a;
    --text-color: #ffffff;
    --text-secondary: #b0b0b0;
    --dark-bg: #0a0a0a;
    --card-bg: #151515;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: clamp(20px, 4vw, 24px);
    font-weight: bold;
    color: var(--primary-color);
}

.logo i {
    font-size: clamp(24px, 4.5vw, 28px);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 20px 60px;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-text {
    animation: fadeInLeft 1s ease;
}

.greeting {
    font-size: clamp(16px, 3vw, 18px);
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.hero-title {
    font-size: clamp(32px, 6vw, 64px);
    font-weight: bold;
    margin-bottom: 15px;
    line-height: 1.2;
}

.hero-title::after {
    content: '|';
    animation: blink 1s infinite;
}

.hero-subtitle {
    font-size: clamp(18px, 3.5vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    padding: clamp(12px, 2vw, 15px) clamp(25px, 4vw, 35px);
    border: none;
    border-radius: 5px;
    font-size: clamp(14px, 2vw, 16px);
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 217, 163, 0.3);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: grayscale(100%);
    transition: var(--transition);
}

.hero-image:hover img {
    filter: grayscale(0%);
}

.hero-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.info-item h3 {
    font-size: clamp(12px, 2vw, 14px);
    color: var(--text-secondary);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.info-item p {
    font-size: clamp(14px, 2.5vw, 16px);
    color: var(--text-color);
    word-break: break-word;
}

.scroll-indicator {
    position: absolute;
    right: 50px;
    bottom: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-line {
    width: 2px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.2);
    position: relative;
}

.scroll-dot {
    width: 10px;
    height: 10px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-top: 10px;
    animation: bounce 2s infinite;
}

/* About Section */
.about {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--secondary-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.section-subtitle {
    color: var(--primary-color);
    font-size: clamp(14px, 2vw, 16px);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.about-title {
    font-size: clamp(24px, 4vw, 36px);
    margin-bottom: 20px;
    line-height: 1.3;
}

.about-description {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
    font-size: clamp(14px, 2vw, 16px);
}

.about-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.detail-item {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.detail-label {
    color: var(--text-color);
    font-weight: bold;
    min-width: 80px;
    font-size: clamp(14px, 2vw, 16px);
}

.detail-value {
    color: var(--text-secondary);
    font-size: clamp(14px, 2vw, 16px);
    word-break: break-word;
}

.download-cv {
    margin-top: 20px;
    text-decoration: none;
    display: inline-block;
}

.download-cv:focus,
.download-cv:hover {
    text-decoration: none;
}

/* Services Section */
.services {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--dark-bg);
}

.section-title {
    font-size: clamp(32px, 6vw, 48px);
    text-align: center;
    margin-bottom: 60px;
}

.services-text {
    font-size: clamp(60px, 15vw, 120px);
    opacity: 0.1;
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--card-bg);
    padding: clamp(30px, 4vw, 40px) clamp(20px, 3vw, 30px);
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 217, 163, 0.1);
}

.service-icon {
    font-size: clamp(36px, 6vw, 48px);
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: clamp(20px, 3vw, 24px);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: clamp(14px, 2vw, 16px);
}

/* Skills Section */
.skills {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--dark-bg);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: 30px;
}

.skill-card {
    background-color: var(--card-bg);
    padding: clamp(30px, 4vw, 40px) clamp(20px, 3vw, 30px);
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    position: relative;
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 217, 163, 0.1);
}

.skill-icon {
    font-size: clamp(40px, 6vw, 56px);
    color: var(--primary-color);
    margin-bottom: 20px;
}

.skill-card h3 {
    font-size: clamp(18px, 3vw, 22px);
    margin-bottom: 12px;
}

.skill-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: clamp(13px, 2vw, 15px);
    margin-bottom: 15px;
}

.skill-level {
    display: inline-block;
    font-size: clamp(12px, 2vw, 14px);
    color: var(--primary-color);
    font-weight: 600;
    background-color: rgba(0, 217, 163, 0.1);
    padding: 6px 12px;
    border-radius: 20px;
}

/* Education Section */
.education {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--dark-bg);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding-left: clamp(30px, 5vw, 50px);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: clamp(30px, 5vw, 40px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 16px;
    height: 16px;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 4px solid var(--dark-bg);
}

.timeline-year {
    color: var(--primary-color);
    font-size: clamp(14px, 2vw, 16px);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.timeline-title {
    font-size: clamp(20px, 3vw, 24px);
    margin-bottom: 10px;
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: clamp(14px, 2vw, 16px);
}

/* Resume Section */
.resume {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--secondary-color);
}

.resume-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.resume-content p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
    font-size: clamp(14px, 2vw, 16px);
}

/* Certifications Section */
.certifications {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--dark-bg);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: 30px;
}

.certification-card {
    background-color: var(--card-bg);
    padding: clamp(20px, 3vw, 30px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.certification-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 217, 163, 0.1);
}

.cert-icon {
    width: clamp(50px, 8vw, 60px);
    height: clamp(50px, 8vw, 60px);
    background: linear-gradient(135deg, var(--primary-color), #00ffc8);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(24px, 4vw, 28px);
    color: var(--dark-bg);
    flex-shrink: 0;
}

.cert-content h3 {
    font-size: clamp(18px, 2.5vw, 20px);
    margin-bottom: 8px;
    line-height: 1.4;
}

.cert-issuer {
    color: var(--primary-color);
    font-size: clamp(13px, 2vw, 14px);
    margin-bottom: 5px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.cert-date {
    color: var(--text-secondary);
    font-size: clamp(12px, 1.8vw, 13px);
    margin-bottom: 15px;
}

.cert-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
    font-size: clamp(13px, 2vw, 14px);
}

.cert-skills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.cert-skills span {
    background-color: rgba(0, 217, 163, 0.1);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: clamp(11px, 1.8vw, 12px);
    border: 1px solid rgba(0, 217, 163, 0.2);
    transition: var(--transition);
}

.certification-card:hover .cert-skills span {
    background-color: rgba(0, 217, 163, 0.15);
    border-color: rgba(0, 217, 163, 0.4);
}

.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: clamp(13px, 2vw, 14px);
    font-weight: 600;
    transition: var(--transition);
    margin-top: 10px;
}

.cert-link i {
    font-size: clamp(11px, 1.8vw, 12px);
    transition: var(--transition);
}

.cert-link:hover {
    gap: 12px;
}

.cert-link:hover i {
    transform: translateX(3px);
}

/* Portfolio Section */
.portfolio {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--secondary-color);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
}

.portfolio-image {
    position: relative;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: clamp(250px, 30vw, 300px);
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 217, 163, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: clamp(20px, 4vw, 30px);
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay h3 {
    font-size: clamp(18px, 3vw, 24px);
    margin-bottom: 15px;
    color: var(--dark-bg);
    text-align: center;
}

.portfolio-overlay p {
    text-align: center;
    margin-bottom: 20px;
    color: var(--dark-bg);
    font-size: clamp(13px, 2vw, 14px);
}

.portfolio-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    justify-content: center;
}

.portfolio-tags span {
    background-color: var(--dark-bg);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: clamp(11px, 1.8vw, 12px);
}

.portfolio-link {
    width: clamp(45px, 8vw, 50px);
    height: clamp(45px, 8vw, 50px);
    background-color: var(--dark-bg);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(18px, 3vw, 20px);
    transition: var(--transition);
}

.portfolio-link:hover {
    transform: scale(1.1);
}

/* Contact Section */
.contact {
    padding: clamp(60px, 10vw, 100px) 20px;
    background-color: var(--dark-bg);
}

.contact-intro {
    text-align: center;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 60px;
    line-height: 1.8;
    font-size: clamp(14px, 2vw, 16px);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: clamp(45px, 8vw, 50px);
    height: clamp(45px, 8vw, 50px);
    background-color: var(--card-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(20px, 3vw, 24px);
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: clamp(16px, 2.5vw, 18px);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-secondary);
    font-size: clamp(13px, 2vw, 14px);
    word-break: break-word;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.social-links a {
    width: clamp(40px, 7vw, 45px);
    height: clamp(40px, 7vw, 45px);
    background-color: var(--card-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    font-size: clamp(18px, 3vw, 20px);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-5px);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: clamp(12px, 2vw, 15px) clamp(16px, 2.5vw, 20px);
    background-color: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--text-color);
    font-size: clamp(14px, 2vw, 16px);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

/* Footer */
.footer {
    background-color: var(--secondary-color);
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: var(--text-secondary);
    font-size: clamp(13px, 2vw, 14px);
}

/* Animations */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes blink {
    0%, 50%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background-color: rgba(10, 10, 10, 0.98);
        width: 100%;
        padding: 40px;
        gap: 20px;
        transition: var(--transition);
        backdrop-filter: blur(10px);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 400px;
    }

    .hero-info {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 60px;
    }

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

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

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

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

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

    .certification-card {
        flex-direction: column;
        text-align: center;
    }

    .cert-icon {
        margin: 0 auto;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 100px 20px 40px;
    }

    .hero-image img {
        max-width: 350px;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 8px;
    }

    .timeline-item {
        margin-left: 0;
        padding-left: 30px;
    }

    .timeline-item::before {
        left: 0;
    }
}

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

    .hero {
        padding: 90px 15px 30px;
    }

    .hero-info {
        margin-top: 40px;
        padding-top: 30px;
        gap: 20px;
    }

    .about,
    .services,
    .skills,
    .education,
    .resume,
    .certifications,
    .portfolio,
    .contact {
        padding: 50px 15px;
    }

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

    .services-grid,
    .portfolio-grid,
    .certifications-grid {
        gap: 20px;
    }

    .nav-links {
        padding: 30px 20px;
    }

    .certification-card {
        padding: 20px;
    }

    .cert-skills {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

/* Extra small devices */
@media (max-width: 360px) {
    .logo {
        font-size: 18px;
    }

    .logo i {
        font-size: 22px;
    }

    .hero-image img {
        max-width: 280px;
    }

    .btn-primary {
        padding: 10px 20px;
        font-size: 13px;
    }

    .service-card,
    .certification-card {
        padding: 20px 15px;
    }
}

/* Tablet landscape */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero-content {
        gap: 50px;
    }

    .about-content {
        gap: 50px;
    }

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

    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large screens optimization */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }

    .hero-content,
    .hero-info {
        max-width: 1320px;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hamburger,
    .scroll-indicator,
    .btn-primary,
    .social-links {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #00ffaa;
        --text-secondary: #cccccc;
    }

    .nav-links a,
    .service-card,
    .certification-card,
    .portfolio-item {
        border: 2px solid var(--primary-color);
    }
}