/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366F1; /* Indigo */
    --primary-gradient: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
    --accent-color: #06B6D4; /* Cyan */
    --accent-purple: #8B5CF6; /* Violet */
    --bg-dark: #060814; /* Obsidian Deep */
    --bg-darker: #020308;
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --card-bg: rgba(15, 23, 42, 0.45);
    --border-color: rgba(255, 255, 255, 0.08);
    --hover-color: #4F46E5;
    --glow-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.25);
    --glow-secondary: 0 10px 30px -10px rgba(6, 182, 212, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(6, 8, 20, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0.9rem 0;
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
    background-color: rgba(6, 8, 20, 0.98);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-bottom-color: rgba(99, 102, 241, 0.2);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo {
    font-size: 1.8rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.25s ease;
    font-weight: 500;
    font-size: 0.95rem;
}

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

.nav-link.active {
    color: var(--primary-color);
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: transform 0.3s, opacity 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    position: relative;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.08), transparent 50%),
                radial-gradient(circle at bottom left, rgba(6, 182, 212, 0.08), transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 600;
    background: linear-gradient(90deg, #FFFFFF 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: inline-block;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: all 0.25s ease;
}

.social-links a:hover {
    color: var(--accent-color);
    transform: translateY(-3px) scale(1.1);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* IDE Mockup */
.mock-ide {
    width: 100%;
    max-width: 450px;
    background: #090d16;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 40px rgba(99, 102, 241, 0.1);
    overflow: hidden;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    text-align: left;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.mock-ide:hover {
    transform: translateY(-5px) rotate(1deg);
}

.ide-header {
    background: #03050a;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ide-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.ide-dot.red { background-color: #EF4444; }
.ide-dot.yellow { background-color: #F59E0B; }
.ide-dot.green { background-color: #10B981; }

.ide-title {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-left: 12px;
}

.ide-body {
    padding: 20px;
    overflow-x: auto;
    background-color: #05070c;
}

.ide-body pre {
    margin: 0;
}

.ide-body code {
    color: #93c5fd;
    line-height: 1.5;
}

.ide-body .keyword { color: #f43f5e; font-weight: bold; }
.ide-body .module { color: #06b6d4; }
.ide-body .function { color: #10b981; }
.ide-body .string { color: #eab308; }
.ide-body .comment { color: #6b7280; font-style: italic; }

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    animation: bounce 2s infinite;
}

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

/* Section Styles */
section {
    padding: 100px 0;
    scroll-margin-top: 80px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

/* About Section */
.about {
    background-color: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.info-item i {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-top: 5px;
}

.info-item h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.info-item p {
    color: var(--text-secondary);
    margin: 0;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: var(--glow-shadow);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

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

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

.skill-category {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: var(--glow-secondary);
}

.skill-category h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skill-category h3 i {
    color: var(--accent-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-tag:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-3px) scale(1.05);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

/* Projects Section */
.projects {
    background-color: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.projects-controls {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.filter-btn {
    background-color: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 0.55rem 1.2rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.92rem;
    transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--accent-color);
}

.filter-btn.active {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.recent-projects-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.4rem;
    margin-bottom: 2rem;
}

.recent-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.recent-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.recent-header h3 i {
    color: var(--accent-color);
}

.recent-header a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.recent-header a:hover {
    text-decoration: underline;
}

.recent-projects-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.7rem 1rem;
}

.recent-projects-list li {
    color: var(--text-secondary);
}

.recent-projects-list a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.recent-projects-list a:hover {
    color: var(--accent-color);
}

.recent-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

.project-card.hidden {
    display: none;
}

.project-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: var(--glow-shadow);
}

.project-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.project-card h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.project-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-list {
    list-style: none;
}

.project-list li {
    margin-bottom: 0.8rem;
}

.project-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-list a::before {
    content: '→';
    color: var(--accent-color);
    transition: transform 0.25s ease;
}

.project-list a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.project-list a:hover::before {
    transform: translateX(5px);
}

/* Articles Section */
.articles {
    background-color: var(--bg-dark);
}

.articles-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.articles-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.article-card {
    padding: 1.6rem;
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: var(--glow-shadow);
}

.article-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.article-card h3 {
    color: var(--text-primary);
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
}

.article-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.article-points {
    list-style: none;
    margin-bottom: 1rem;
}

.article-points li {
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
}

.article-points li::before {
    content: "• ";
    color: var(--accent-color);
}

.article-card a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.article-card a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-subtitle {
    text-align: center;
    max-width: 700px;
    margin: -1.5rem auto 3.5rem auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.contact-cards-grid {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    width: 100%;
}

.contact-card-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.2rem;
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-card-item:hover {
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateX(5px);
    box-shadow: var(--glow-shadow);
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: transform 0.3s ease;
}

.contact-card-item:hover .contact-card-icon {
    transform: scale(1.1);
}

.contact-card-icon.linkedin {
    background: rgba(10, 102, 194, 0.15);
    color: #0A66C2;
}

.contact-card-icon.email {
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-color);
}

.contact-card-icon.whatsapp {
    background: rgba(37, 211, 102, 0.15);
    color: #25D366;
}

.contact-card-details {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.contact-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.contact-card-item:hover .contact-value {
    color: var(--accent-color);
}

/* GitHub Profile Card */
.github-profile-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s;
    width: 100%;
}

.github-profile-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: var(--glow-shadow);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}

.profile-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
}

.profile-meta h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin: 0;
}

.profile-meta p {
    font-size: 0.95rem;
    color: var(--accent-color);
    margin: 0;
}

.profile-bio {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.profile-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.8rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.2rem 0;
}

.profile-stat {
    text-align: center;
}

.stat-val {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-lbl {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.profile-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.profile-link-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(99, 102, 241, 0.4);
}

/* Footer */
.footer {
    background-color: var(--bg-darker);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer i {
    color: #ff6b6b;
}

/* Scroll to top */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 999;
    transition: transform 0.3s, background-color 0.3s;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.scroll-to-top.visible {
    display: flex;
}

.scroll-to-top:hover {
    transform: scale(1.1);
    background-color: var(--hover-color);
}

/* Skip to content link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 0 0 8px 8px;
    z-index: 1001;
    font-weight: 600;
    text-decoration: none;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

main:focus {
    outline: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .code-line,
    .scroll-indicator {
        display: none;
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-dark);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .recent-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}


/* Articles grouped by track */
.articles-content.articles-grouped {
    flex-direction: column;
    align-items: stretch;
    gap: 3.5rem;
    min-height: 0;
}

.articles-group-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.articles-group-header h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.articles-group-header h3 i {
    color: var(--accent-color);
    margin-right: 0.4rem;
}

.articles-group-header p {
    color: var(--text-secondary);
    max-width: 620px;
}

.articles-group-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
}

.articles-group-link:hover {
    color: var(--primary-color);
}

.articles-group .articles-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.article-step {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-color);
    margin-bottom: 0.8rem;
}