/* Hero Section - Full Width */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-primary) 100%);
    padding: 2rem;
}



.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    animation: fadeInUp 1s ease-out;
}

.hero-contact-container {
    margin-bottom: 3rem;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta-text {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 2rem;
    font-family: var(--font-heading);
    line-height: 1.3;
}

.hero-contact-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.contact-link:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.contact-link .icon {
    font-size: 1.5rem;
}

.contact-link.email:hover .icon {
    animation: bounce 1s infinite;
}

.contact-link.phone:hover .icon {
    animation: ring 1s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

@keyframes ring {
    0% {
        transform: rotate(0);
    }

    10% {
        transform: rotate(15deg);
    }

    20% {
        transform: rotate(-15deg);
    }

    30% {
        transform: rotate(15deg);
    }

    40% {
        transform: rotate(-15deg);
    }

    100% {
        transform: rotate(0);
    }
}

.hero-name {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    letter-spacing: 0.02em;
    margin: 0;
    color: #1a1a1a;
    text-transform: none;
    line-height: 1.2;
    font-family: var(--font-heading);
    text-align: right;
}



.hero-silhouette {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.hero-silhouette img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    filter: drop-shadow(0 0 40px rgba(220, 38, 38, 0.3));
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}



/* About Section */
.about-container {
    display: grid;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    align-items: start;
}

/* About Sidebar Navigation */
.about-sidebar {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: sticky;
    top: 100px;
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.about-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    position: relative;
    border-left: 3px solid transparent;
}

.about-nav-link:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    transform: translateX(4px);
}

.about-nav-link.active {
    background: var(--color-bg-elevated);
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    font-weight: 600;
}

.about-nav-link .nav-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.about-nav-link.active .nav-icon {
    transform: scale(1.2);
}

.about-nav-link .nav-text {
    flex: 1;
}

/* About Content Area */
.about-content {
    display: grid;
    gap: var(--spacing-lg);
}


.about-profile-card {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
}

.profile-header {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.avatar-text {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-bg-primary);
    font-family: var(--font-heading);
}

.profile-info h3 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
    color: var(--color-text-primary);
}

.profile-title {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.25rem;
}

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

.profile-bio {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.profile-bio p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-2px);
    background: var(--color-bg-elevated);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    font-family: var(--font-heading);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.about-section {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
}

.about-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.section-icon {
    font-size: 1.75rem;
}

/* Timeline Styles */
.timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: -24px;
    width: 2px;
    background: var(--color-border);
}

.timeline-logo {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-logo {
    border-color: var(--color-accent);
    transform: scale(1.1);
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.timeline-company {
    font-size: 1rem;
    color: var(--color-accent);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-description li {
    color: var(--color-text-secondary);
    padding-left: var(--spacing-md);
    margin-bottom: 0.5rem;
    position: relative;
}

.timeline-description li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

.timeline-description-text {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.skill-category h4 {
    font-size: 1.125rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: default;
}

.skill-tag:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* Projects Section */
.project-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-elevated));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 3rem;
}

.project-content {
    padding: var(--spacing-lg);
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.project-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-accent);
}

/* Blog Section */
.tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.tag-filter .tag {
    cursor: pointer;
    border: 1px solid var(--color-border);
}

.tag-filter .tag.active {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
}

.blog-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
}

.blog-cover {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-accent-dark));
}

.blog-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.blog-tag {
    padding: 0.25rem 0.5rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
}

.blog-tag.fluid-mechanics {
    color: #dc2626;
}

.blog-tag.composite {
    color: #34d399;
}

.blog-tag.additive {
    color: #f472b6;
}

.blog-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    font-family: var(--font-heading);
}

.blog-excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    flex: 1;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

/* Calculator Section */
/* Calculator Section */
.calculator-container {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    min-height: 600px;
}

.dashboard-controls {
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.calc-category-section {
    margin-bottom: var(--spacing-2xl);
}

.category-title {
    font-size: 1.5rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.calc-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
}

.calc-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    background: var(--color-bg-elevated);
}

.calc-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    background: var(--color-bg-primary);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.calc-info h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.calc-info p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== Engineering Apps Grid (New Design) ===== */
.eng-apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.eng-app-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    position: relative;
}

.eng-app-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--color-accent);
}

.eng-app-card.coming-soon {
    cursor: default;
    opacity: 0.75;
}

.eng-app-card.coming-soon:hover {
    transform: none;
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}

.eng-app-image {
    height: 180px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.eng-app-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(220, 38, 38, 0.15) 0%, transparent 60%);
}

.eng-app-card:hover .eng-app-image::after {
    background: radial-gradient(circle at 30% 50%, rgba(220, 38, 38, 0.25) 0%, transparent 60%);
}

.eng-app-image.coming-soon-bg {
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-elevated));
}

.eng-app-image.coming-soon-bg::after {
    display: none;
}

.eng-app-icon-large {
    font-size: 4rem;
    z-index: 1;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
    transition: transform 0.35s ease;
}

.eng-app-card:hover .eng-app-icon-large {
    transform: scale(1.15);
}

.eng-app-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.eng-app-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: #dcfce7;
    color: #166534;
    width: fit-content;
    margin-bottom: var(--spacing-sm);
}

.eng-app-badge.soon {
    background: #fef3c7;
    color: #92400e;
}

.eng-app-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    transition: color 0.2s ease;
}

.eng-app-card:hover .eng-app-title {
    color: var(--color-accent);
}

.eng-app-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.eng-app-launch {
    display: block;
    text-align: center;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    background: rgba(220, 38, 38, 0.08);
    color: var(--color-accent);
}

.eng-app-card:hover .eng-app-launch {
    background: var(--color-accent);
    color: #fff;
}

.eng-app-launch.disabled {
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    cursor: default;
}

@media (max-width: 768px) {
    .eng-apps-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .eng-app-image {
        height: 140px;
    }
}

/* Calculator Header (Single View) */
.calculator-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.header-text {
    flex: 1;
}

.back-btn {
    white-space: nowrap;
}

.calculator-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.calculator-header {
    margin-bottom: var(--spacing-xl);
}

.calculator-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.calculator-description {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.calculator-body {
    display: grid;
    gap: var(--spacing-lg);
}

.calc-section {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.calc-section-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.calc-result {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-accent);
}

.calc-result-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.calc-result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.calc-canvas {
    width: 100%;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

/* Certifications Grid (New Design) */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.cert-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-accent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.cert-card:hover::before {
    opacity: 1;
}

.cert-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-accent);
}

.cert-info h4 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

.cert-issuer {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cert-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Footer */
footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    color: var(--color-text-muted);
    margin-top: var(--spacing-2xl);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .calculator-container {
        grid-template-columns: 1fr;
    }

    .calculator-nav {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .hero-section {
        min-height: 100vh;
        padding: 1rem;
    }

    .hero-content {
        padding: 2rem 1rem;
    }

    .hero-quote {
        font-size: clamp(1.5rem, 6vw, 2.5rem);
        margin-bottom: 2rem;
        text-align: center;
        line-height: 1.4;
    }

    .hero-name {
        font-size: clamp(1.2rem, 5vw, 1.8rem);
        text-align: center;
        margin-top: 1rem;
    }

    /* About Section Mobile */
    .about-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }



    .about-sidebar {
        position: static;
        flex-direction: row;
        overflow-x: auto;
        overflow-y: visible;
        max-height: none;
        padding: var(--spacing-sm);
        gap: 0.5rem;
        scrollbar-width: thin;
    }

    .about-sidebar::-webkit-scrollbar {
        height: 4px;
    }

    .about-sidebar::-webkit-scrollbar-thumb {
        background: var(--color-accent);
        border-radius: 2px;
    }

    .about-nav-link {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: 80px;
        gap: 0.25rem;
        border-left: none;
        border-bottom: 3px solid transparent;
    }

    .about-nav-link.active {
        border-left-color: transparent;
        border-bottom-color: var(--color-accent);
    }

    .about-nav-link:hover {
        transform: translateY(-2px);
    }

    .about-nav-link .nav-text {
        font-size: 0.75rem;
        white-space: nowrap;
    }

    .about-nav-link .nav-icon {
        font-size: 1.5rem;
    }

    .calculator-display {
        padding: var(--spacing-lg);
    }

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

    .profile-header {
        flex-direction: column;
        text-align: center;
    }

    .profile-stats {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-item:not(:last-child)::after {
        display: none;
    }
}