:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-primary: #ffffff;
    --text-secondary: #a8b2d1;
    --text-muted: #8892b0;
    --background: #0a0e27;
    --card-background: #1a1f3a;
    --border-color: #2a3556;
    
    --font-display: 'Playfair Display', serif;
    --font-body: 'Work Sans', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.98);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.nav-logo:hover {
    color: var(--highlight-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 8rem 0 4rem;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(233, 69, 96, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(15, 52, 96, 0.15) 0%, transparent 50%);
    animation: backgroundPulse 20s ease-in-out infinite;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.title-line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--highlight-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.btn {
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    display: inline-block;
    font-size: 1rem;
}

.btn-primary {
    background: var(--highlight-color);
    color: var(--text-primary);
    border: 2px solid var(--highlight-color);
}

.btn-primary:hover {
    background: transparent;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(233, 69, 96, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--highlight-color);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.2s forwards;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--text-muted);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Section Styling */
section {
    padding: 6rem 0;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 4rem;
}

.section-number {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
}

/* About Section */
.about {
    background: var(--secondary-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.lead {
    font-size: 1.3rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.6;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--highlight-color);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.info-card {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.info-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.info-icon {
    font-size: 1.5rem;
}

.info-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.info-list a:hover {
    color: var(--highlight-color);
}

.education-item h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

.year {
    color: var(--text-muted);
    font-size: 0.9rem !important;
    margin-top: 0.5rem;
}

/* Experience Section */
.experience-content {
    display: grid;
    gap: 2rem;
}

.experience-card {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.experience-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--highlight-color);
    transform: scaleY(0);
    transition: var(--transition);
}

.experience-card:hover::before {
    transform: scaleY(1);
}

.experience-card:hover {
    transform: translateX(10px);
    border-color: var(--accent-color);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--text-primary);
}

.date {
    color: var(--highlight-color);
    font-size: 0.95rem;
    font-weight: 600;
}

.company {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag {
    background: rgba(233, 69, 96, 0.1);
    color: var(--highlight-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(233, 69, 96, 0.2);
}

/* Projects Section */
.projects {
    background: var(--secondary-color);
}

.projects-grid {
    display: grid;
    gap: 2rem;
}

.project-card {
    background: var(--card-background);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.project-card.featured {
    border-color: var(--highlight-color);
    background: linear-gradient(135deg, var(--card-background) 0%, rgba(233, 69, 96, 0.05) 100%);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.project-number {
    position: absolute;
    top: -1rem;
    right: 2rem;
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    color: rgba(233, 69, 96, 0.1);
    line-height: 1;
}

.project-card h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    background: rgba(15, 52, 96, 0.3);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

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

.project-badge {
    background: var(--highlight-color);
    color: var(--text-primary);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.skill-category {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.skill-category h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(15, 52, 96, 0.2);
    border-radius: 8px;
    transition: var(--transition);
}

.skill-item:hover {
    background: rgba(15, 52, 96, 0.3);
    transform: translateX(5px);
}

.skill-name {
    color: var(--text-secondary);
    font-weight: 500;
}

.skill-level {
    color: var(--highlight-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.certifications {
    background: var(--card-background);
    padding: 3rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.certifications h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.cert-list {
    list-style: none;
    display: grid;
    gap: 1rem;
}

.cert-list li {
    padding: 1rem 1.5rem;
    background: rgba(15, 52, 96, 0.2);
    border-radius: 8px;
    color: var(--text-secondary);
    position: relative;
    padding-left: 3rem;
    transition: var(--transition);
}

.cert-list li:hover {
    background: rgba(15, 52, 96, 0.3);
    transform: translateX(5px);
}

.cert-list li::before {
    content: '✓';
    position: absolute;
    left: 1rem;
    color: var(--highlight-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Contact Section */
.contact {
    background: var(--secondary-color);
}

.contact-content {
    display: grid;
    gap: 3rem;
}

.contact-text h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

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

.contact-card {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--highlight-color);
}

.contact-icon {
    font-size: 3rem;
}

.contact-card h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.contact-card:hover p {
    color: var(--highlight-color);
}

/* Footer */
.footer {
    background: var(--primary-color);
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

.footer-note {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 14, 39, 0.98);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 2rem;
        border-top: 1px solid var(--border-color);
    }

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

    .nav-toggle {
        display: flex;
    }

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

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .section-number {
        font-size: 3rem;
    }

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

@media (max-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }

    section {
        padding: 4rem 0;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

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

    .contact-methods {
        grid-template-columns: 1fr;
    }

    .project-number {
        font-size: 3rem;
        top: 1rem;
        right: 1rem;
    }
}