/* ===== VARIABLES ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #38bdf8;
    --accent: #22d3ee;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f1f5f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.75rem 2rem;
    box-shadow: var(--shadow);
}

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--dark);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--dark);
    transition: all 0.3s ease;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 20px 80px;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(56, 189, 248, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(34, 211, 238, 0.1) 0%, transparent 60%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: var(--secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: var(--gray-light);
    font-weight: 400;
    margin-bottom: 1rem;
}

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.hero-tags span {
    padding: 0.4rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--gray-light);
    font-size: 0.9rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    cursor: pointer;
    text-decoration: none;
    padding: 1rem;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.scroll-indicator:hover {
    background: rgba(255, 255, 255, 0.1);
    animation: none;
    transform: translateX(-50%) scale(1.1);
}

.scroll-indicator i {
    color: var(--gray-light);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.scroll-indicator:hover i {
    color: var(--white);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== SECTIONS ===== */
section {
    padding: 100px 10px;
    max-width: 1200px;
    margin: auto;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 1.5rem auto 0;
}

/* ===== ABOUT ===== */
#about .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--light);
    border-radius: 16px;
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
}

.image-wrapper::before {
    content: '';
    position: absolute;
    inset: -10px;
    background: var(--gradient);
    border-radius: 30px;
    transform: rotate(6deg);
    z-index: -1;
    opacity: 0.3;
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-light) 0%, var(--dark) 100%);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
}

.profile-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 24px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.skill-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skill-icon i {
    color: var(--white);
    font-size: 1.25rem;
}

.skill-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

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

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--light);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--dark);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: var(--dark);
    color: var(--white);
}

.skill-tag i {
    color: var(--primary);
    font-size: 0.85rem;
}

.skill-tag:hover i {
    color: var(--secondary);
}

/* ===== EXPERIENCE ===== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    padding-bottom: 3rem;
}

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

.timeline-dot {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--white);
    border: 3px solid var(--primary);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 20px;
    padding: 1.75rem;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.timeline-date {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: var(--gradient);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    margin: 0;
}

.timeline-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--gray);
    font-size: 0.95rem;
}

.timeline-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

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

.project-card {
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

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

.project-image {
    height: 180px;
    background: linear-gradient(135deg, var(--dark-light) 0%, var(--dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0.1;
}

.project-image i {
    font-size: 3rem;
    color: var(--secondary);
    z-index: 1;
}

.project-type {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    z-index: 2;
    backdrop-filter: blur(10px);
}

.project-type--personal {
    background: rgba(99, 102, 241, 0.9);
    color: var(--white);
}

.project-type--freelance {
    background: rgba(16, 185, 129, 0.9);
    color: var(--white);
}

.project-type--study {
    background: rgba(34, 211, 238, 0.9);
    color: var(--dark);
}

.project-type--company {
    background: rgba(251, 191, 36, 0.9);
    color: var(--dark);
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.project-content p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tech span {
    padding: 0.3rem 0.75rem;
    background: var(--light);
    color: var(--dark);
    font-size: 0.8rem;
    border-radius: 50px;
    font-weight: 500;
}

/* ===== EDUCATION ===== */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.education-card {
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.education-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
}

.education-icon i {
    color: var(--white);
    font-size: 1.5rem;
}

.education-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.education-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

.education-card .year {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: var(--light);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-top: 1rem;
}

/* ===== CONTACT ===== */
#contact {
    background: var(--dark);
    max-width: none;
    margin: 0;
    padding: 100px 20px;
}

#contact .section-header h2 {
    color: var(--white);
}

#contact .section-header p {
    color: var(--gray-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-info-side {
    display: flex;
    flex-direction: column;
}

.contact-cards {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
    border-color: rgba(255, 255, 255, 0.2);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: var(--white);
    font-size: 1.25rem;
}

.contact-info h3 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-info p {
    color: var(--gray-light);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links-bottom {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    font-size: 1.25rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

/* Contact Form */
.contact-form-side {
    display: flex;
    align-items: flex-start;
}

.contact-form {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

/* Honeypot anti-spam (hidden from users) */
.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: var(--white);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #22c55e;
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.social-link:hover {
    background: var(--gradient);
    border-color: transparent;
    color: var(--white);
    transform: translateY(-3px);
}

/* ===== FOOTER ===== */
footer {
    background: var(--dark-light);
    text-align: center;
    padding: 2rem 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer p {
    color: var(--gray);
    font-size: 0.9rem;
}

footer a {
    color: var(--secondary);
    text-decoration: none;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
    #about .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-image {
        order: -1;
    }

    .image-wrapper {
        width: 250px;
        height: 250px;
    }

    .timeline::before {
        left: 0;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .social-links {
        justify-content: center;
    }
}

/* Body lock when mobile menu is open */
body.menu-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        padding: 0 1rem;
        gap: 0;
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
    }

    .nav-links.active {
        max-height: 400px;
        opacity: 1;
        padding: 1rem;
    }

    .nav-links li {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--light);
        opacity: 0;
        transform: translateX(-20px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav-links.active li {
        opacity: 1;
        transform: translateX(0);
    }

    /* Stagger animation for menu items */
    .nav-links.active li:nth-child(1) { transition-delay: 0.05s; }
    .nav-links.active li:nth-child(2) { transition-delay: 0.1s; }
    .nav-links.active li:nth-child(3) { transition-delay: 0.15s; }
    .nav-links.active li:nth-child(4) { transition-delay: 0.2s; }
    .nav-links.active li:nth-child(5) { transition-delay: 0.25s; }
    .nav-links.active li:nth-child(6) { transition-delay: 0.3s; }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a.active {
        color: var(--primary);
        font-weight: 600;
    }

    .nav-toggle {
        display: flex;
        z-index: 10;
    }

    /* Hamburger to X animation */
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(-10px);
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    section {
        padding: 60px 20px;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .stat-item {
        padding: 1rem 0.5rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

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

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        padding-left: 2rem;
    }

    .timeline-dot {
        left: -6px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}