/* ========================================
   VARIABLES & RESET
======================================== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(20, 20, 30, 0.6);
    --bg-card-hover: rgba(30, 30, 45, 0.7);

    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent: #8b5cf6;
    --accent-light: #a78bfa;
    --accent-dark: #7c3aed;
    --accent-glow: rgba(139, 92, 246, 0.4);

    --cyan: #06b6d4;
    --cyan-glow: rgba(6, 182, 212, 0.3);

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(139, 92, 246, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    --transition: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 150ms var(--transition);
    --transition-normal: 300ms var(--transition);
    --transition-slow: 500ms var(--transition);

    --container-width: 1100px;
    --section-padding: 100px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background gradient */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(139, 92, 246, 0.12), transparent),
        radial-gradient(ellipse 50% 50% at 90% 80%, rgba(6, 182, 212, 0.08), transparent),
        radial-gradient(ellipse 40% 40% at 10% 60%, rgba(139, 92, 246, 0.06), transparent);
    pointer-events: none;
    z-index: -1;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent), var(--cyan));
    border-radius: 4px;
}

/* ========================================
   LAYOUT
======================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding) 0;
}

.section-alt {
    background: var(--bg-secondary);
}

/* ========================================
   HEADER / NAV
======================================== */
.header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    top: 12px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    background: rgba(20, 20, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 100px;
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.nav-toggle:hover {
    background: rgba(139, 92, 246, 0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    padding: 4px 8px;
}

.nav-logo img {
    height: 28px;
    width: auto;
    transition: var(--transition-fast);
}

.nav-logo:hover img {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-link {
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 100px;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(139, 92, 246, 0.1);
}

.nav-link.active {
    color: var(--text-primary);
    background: rgba(139, 92, 246, 0.15);
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
}

.hero-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 60px;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
}

.hero-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-xl);
    object-fit: cover;
    border: 3px solid transparent;
    background:
        linear-gradient(var(--bg-primary), var(--bg-primary)) padding-box,
        linear-gradient(135deg, var(--accent), var(--cyan)) border-box;
    transition: var(--transition-normal);
}

.hero-image:hover {
    transform: scale(1.03) rotate(2deg);
}

.hero-image-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(30px);
    z-index: -1;
    opacity: 0.6;
}

.hero-greeting {
    color: var(--accent-light);
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
}

.hero-name {
    font-size: clamp(40px, 8vw, 64px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.hero-title {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    min-height: 30px;
}

.cursor {
    color: var(--accent);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    max-width: 500px;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-description strong {
    color: var(--accent-light);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.hero-socials {
    display: flex;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 20px;
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--accent);
    border-color: var(--border-hover);
    transform: translateY(-3px);
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn i {
    font-size: 18px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0;
    background: none;
    border: none;
    color: var(--accent-light);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.btn-link i {
    transition: transform var(--transition-fast);
}

.btn-link:hover i {
    transform: translateX(4px);
}

/* ========================================
   SECTION TITLES
======================================== */
.section-title {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 60px;
}

.title-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    border-radius: var(--radius-md);
    font-size: 24px;
    color: white;
}

.subsection-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 600;
    margin: 60px 0 32px;
    color: var(--text-primary);
}

.subsection-title i {
    color: var(--accent);
    font-size: 28px;
}

/* ========================================
   TIMELINE
======================================== */
.timeline-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

.timeline-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.timeline-heading i {
    font-size: 24px;
    color: var(--accent);
}

.timeline {
    position: relative;
    padding-left: 28px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--cyan));
    opacity: 0.3;
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-bottom: 32px;
    opacity: 0;
    transform: translateX(-20px);
    transition: var(--transition-slow);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -32px;
    top: 8px;
    width: 10px;
    height: 10px;
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--bg-primary), 0 0 20px var(--accent-glow);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.timeline-date {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.1);
    padding: 4px 10px;
    border-radius: 100px;
    margin-bottom: 12px;
}

.timeline-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.timeline-location {
    font-size: 13px;
    color: var(--cyan);
    font-weight: 500;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   SKILLS
======================================== */
.skills-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.skill-category-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 8px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    opacity: 0;
    transform: translateY(20px);
}

.skill-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-item:hover {
    background: rgba(139, 92, 246, 0.08);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.skill-item img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.skill-item span {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
}

/* ========================================
   PROJECTS
======================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 28px;
    transition: var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.project-card.featured {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.05));
    border-color: rgba(139, 92, 246, 0.2);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.project-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    border-radius: var(--radius-md);
    font-size: 24px;
    color: white;
}

.project-links {
    display: flex;
    gap: 8px;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    font-size: 18px;
    transition: var(--transition-fast);
}

.project-link:hover {
    color: var(--accent);
    background: rgba(139, 92, 246, 0.1);
}

.project-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--cyan);
    background: rgba(6, 182, 212, 0.1);
    padding: 6px 12px;
    border-radius: 100px;
}

.project-year {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.15);
    padding: 6px 12px;
    border-radius: 100px;
}

.project-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.project-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-light);
    background: rgba(139, 92, 246, 0.1);
    padding: 6px 12px;
    border-radius: 100px;
}

.project-link-full {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 0;
    transition: var(--transition-fast);
}

.project-link-full:hover {
    color: var(--accent);
}

.project-link-full i {
    font-size: 16px;
    transition: transform var(--transition-fast);
}

.project-link-full:hover i {
    transform: translate(3px, -3px);
}

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

/* ========================================
   CONTACT
======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-intro {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-fast);
    opacity: 0;
    transform: translateX(-20px);
}

.contact-card.visible {
    opacity: 1;
    transform: translateX(0);
}

.contact-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateX(5px);
}

.contact-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    border-radius: var(--radius-md);
    font-size: 22px;
    color: white;
    flex-shrink: 0;
}

.contact-card-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.contact-card-value {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-family: inherit;
    font-size: 14px;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(139, 92, 246, 0.05);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

/* ========================================
   FOOTER
======================================== */
.footer {
    padding: 32px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.footer-socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 18px;
    transition: var(--transition-fast);
}

.footer-socials a:hover {
    color: var(--accent);
    border-color: var(--border-hover);
}

/* ========================================
   MODAL
======================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.modal-content h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 32px;
    padding-right: 40px;
}

.modal-section {
    margin-bottom: 28px;
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 16px;
}

.modal-section h4 i {
    font-size: 20px;
}

.modal-section ul {
    list-style: none;
}

.modal-section li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.modal-section li:last-child {
    border-bottom: none;
}

.modal-section li strong {
    color: var(--text-primary);
}

.modal-section a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

.modal-section a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1000px) {
    .projects-grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-image-wrapper {
        order: -1;
    }

    .hero-description {
        max-width: none;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-socials {
        justify-content: center;
    }

    .timeline-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 700px) {
    /* Mobile nav */
    .header {
        left: 20px;
        right: 20px;
        transform: none;
        width: auto;
    }

    .nav {
        position: relative;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        border-radius: var(--radius-lg);
        padding: 8px 12px;
        width: 100%;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        width: 100%;
        gap: 4px;
        margin-top: 8px;
        padding: 8px;
        background: rgba(20, 20, 30, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        pointer-events: none;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-links.active {
        max-height: 300px;
        opacity: 1;
        pointer-events: auto;
    }

    .nav-link {
        padding: 12px 16px;
        border-radius: var(--radius-md);
        text-align: center;
        width: 100%;
        transform: translateY(-10px);
        opacity: 0;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    background 0.15s ease,
                    color 0.15s ease;
    }

    .nav-links.active .nav-link {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-links.active .nav-link:nth-child(1) { transition-delay: 0.05s; }
    .nav-links.active .nav-link:nth-child(2) { transition-delay: 0.1s; }
    .nav-links.active .nav-link:nth-child(3) { transition-delay: 0.15s; }
    .nav-links.active .nav-link:nth-child(4) { transition-delay: 0.2s; }
}

@media (max-width: 600px) {
    :root {
        --section-padding: 60px;
    }

    .hero-name {
        font-size: 36px;
    }

    .hero-title {
        font-size: 16px;
        justify-content: center;
    }

    .hero-image {
        width: 150px;
        height: 150px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 40px;
    }

    .title-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .btn {
        padding: 12px 20px;
        font-size: 13px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 400px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}