/* Header styling */
header {
    background: var(--color-gradient-hero);
    box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

#hero {
    padding-top: 4rem;
    padding-bottom: 3rem;
    background: transparent;
}

/* Sections */
section {
    padding: 3rem 0;
}

section:nth-child(even) {
    background-color: var(--color-bg-section);
}

h1 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.hero-grid {
    display: grid;
    gap: 2rem;
    justify-items: center;
    align-items: center;
    text-align: center;
}

.hero-grid > div {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-grid .contact-info {
    align-items: center;
    margin-bottom: 1.5rem;
}

.hero-grid .hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.photo-container {
    margin-bottom: 1.5rem;
}

.hero-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    display: block;
}

nav[aria-label="Main Navigation"] {
    background-color: var(--color-bg-nav);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav[aria-label="Main Navigation"] .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    position: relative;
}

.nav-menu-mobile {
    list-style: none;
    padding: 0.5rem 0;
    margin: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-nav);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
    display: flex;
    flex-direction: column;
}

.nav-menu-mobile[hidden] {
    display: none;
}

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

.nav-menu-mobile a {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1rem;
    transition: color 0.2s, background-color 0.2s;
}

.nav-menu-mobile a:hover,
.nav-menu-mobile a:focus-visible {
    color: var(--color-accent-cyan);
    background-color: var(--color-bg-card);
}

.nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: var(--color-text-primary);
    padding: 0.25rem 0.5rem 0.25rem 0;
    border-radius: 0.375rem;
    transition: color 0.2s;
}

.nav-brand:hover,
.nav-brand:focus-visible {
    color: var(--color-accent-cyan);
    text-decoration: none;
}

.nav-brand-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
    display: block;
}

.nav-brand-initials {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: 0.05em;
}

.nav-menu-desktop {
    list-style: none;
    padding: 0;
    margin: 0 0 0 auto;
    display: flex;
    gap: 1.5rem;
}

.nav-menu-desktop a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    padding: 0.25rem 0;
}

.nav-menu-desktop a:hover {
    color: var(--color-accent-cyan);
}

.nav-linkedin {
    display: inline-flex;
    align-items: center;
    margin-left: 0.75rem;
    opacity: 0.85;
    transition: opacity 0.2s, transform 0.2s;
    flex-shrink: 0;
}

.nav-linkedin:hover,
.nav-linkedin:focus-visible {
    opacity: 1;
    transform: scale(1.1);
}

.hamburger-icon {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    color: var(--color-text-secondary);
}

.hamburger-icon:hover {
    color: var(--color-accent-cyan);
}

.experience-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.experience-item {
    position: relative;
    padding: 1.5rem;
    background-color: var(--color-bg-card);
    border-radius: 0.5rem;
    border-left: 4px solid var(--color-accent-blue);
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.experience-item:hover {
    border-left-color: var(--color-accent-cyan);
}

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

.experience-item ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.experience-item ul + p {
    margin-top: 1.25rem;
}

.tech-stack-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.certifications-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.achievements-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.recommendations-carousel {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.carousel-viewport {
    flex: 1;
    overflow: hidden;
}

.carousel-track {
    display: flex;
    gap: 1.5rem;
    transition: transform 0.4s ease;
    will-change: transform;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}