/* Base Styles */
:root {
    --bg-dark: #0a192f;
    --bg-light: #112240;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --accent: #64ffda;
    --white: #e6f1ff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1200px;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: var(--bg-dark);
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Navigation */
.navbar {
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent) !important;
}

.nav-link {
    color: var(--text-primary) !important;
    font-size: 0.95rem;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent) !important;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
}

.hero-name {
    font-size: 4rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-photo {
    max-width: 300px;
    border: 3px solid var(--accent);
    animation: fadeIn 1s ease 0.6s both;
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

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

.about-content {
    max-width: 800px;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Experience Section */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-item {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.experience-item.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

.experience-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(100, 255, 218, 0.1);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.experience-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
    margin: 0;
}

.experience-date {
    color: var(--accent);
    font-size: 0.9rem;
}

.experience-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.experience-artifacts {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.artifact-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.artifact-link:hover {
    color: var(--white);
    text-decoration: underline;
}

.experience-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: rgba(100, 255, 218, 0.1);
    color: var(--accent);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Skills Section */
.skills-section {
    background-color: var(--bg-light);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    opacity: 0;
    transform: translateY(20px);
}

.skill-category.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

.skill-category h3 {
    font-size: 1.3rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.skill-category ul {
    list-style: none;
    padding: 0;
}

.skill-category li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.skill-category li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 1.2rem;
}

/* Contact Section */
.contact-section {
    text-align: center;
}

.contact-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn-primary {
    background-color: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    padding: 1rem 2rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: rgba(100, 255, 218, 0.1);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-primary:focus {
    outline: 3px solid var(--accent);
    outline-offset: 4px;
}

/* Focus Indicators for Accessibility */
a:focus,
button:focus,
.nav-link:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Footer */
.footer {
    background-color: var(--bg-light);
    padding: 2rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

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

/* Responsive Design */
@media (max-width: 991px) {
    .hero-name {
        font-size: 3rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-photo {
        margin-top: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .experience-header {
        flex-direction: column;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}