/* assets/css/style.css */

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--color-accent-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-8);
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-primary);
    transition: width var(--transition-fast);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

/* Background Glow */
.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

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

.hero-greeting {
    font-family: var(--font-heading);
    color: var(--color-accent-primary);
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-4);
    display: block;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-4);
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-4);
    font-size: 1.1rem;
}

.skills-container {
    margin-top: var(--spacing-8);
}

.skill-tag {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-accent-primary);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
    margin: 0 var(--spacing-2) var(--spacing-2) 0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-16);
    margin-bottom: var(--spacing-12);
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: var(--color-bg-base);
    border: 4px solid var(--color-accent-primary);
    border-radius: 50%;
}

.timeline-date {
    font-family: var(--font-heading);
    color: var(--color-accent-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.timeline-content h3 {
    margin-bottom: var(--spacing-1);
    font-size: 1.5rem;
}

.timeline-content h4 {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-4);
}

.timeline-content ul {
    list-style-type: none;
}

.timeline-content li {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
    position: relative;
    padding-left: var(--spacing-6);
}

.timeline-content li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
}

/* Portfolio Section */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-12);
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--spacing-2) var(--spacing-6);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-heading);
    font-weight: 500;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--color-accent-primary);
    color: #fff;
    border-color: var(--color-accent-primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-8);
    align-items: start;
}

.portfolio-card {
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.portfolio-card:hover {
    transform: translateY(-10px);
}

.portfolio-img-wrapper {
    width: 100%;
    height: auto;
    overflow: hidden;
    position: relative;
}

.portfolio-img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.8s ease;
}

.portfolio-card:hover .portfolio-img-wrapper img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-6);
}

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

.portfolio-info h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-1);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.portfolio-info p {
    color: var(--color-accent-primary);
    font-family: var(--font-heading);
    font-weight: 500;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
    transition-delay: 0.1s;
}

.portfolio-card:hover .portfolio-info h3,
.portfolio-card:hover .portfolio-info p {
    transform: translateY(0);
}

/* Footer / Contact */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-12) 0;
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-8);
    margin: var(--spacing-8) 0;
}

.contact-link {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.contact-link:hover {
    color: var(--color-accent-primary);
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none; /* In a real app, add a hamburger menu */
    }
}