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

html {
    scroll-behavior: smooth;
}

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f1a;
    --bg-card: #13131f;
    --bg-card-hover: #1a1a2e;
    --border: #1e1e35;
    --border-bright: #2a2a4a;
    --blue: #4f8eff;
    --blue-dark: #2563eb;
    --green: #00d68f;
    --purple: #a855f7;
    --pink: #ec4899;
    --yellow: #f59e0b;
    --text-primary: #eef0f8;
    --text-secondary: #8b8fa8;
    --text-muted: #555870;
    --font-display: 'Syne', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

body {
    font-family: var(--font-display);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===========================
   NAVIGATION
=========================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.nav-logo span {
    color: var(--blue);
}

.nav-menu {
    display: flex;
    gap: 0.25rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.03em;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(79, 142, 255, 0.12);
    color: var(--blue);
}

.nav-menu-toggle {
    display: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
}

/* ===========================
   HERO SECTION
=========================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    padding: 6rem 1.5rem 4rem;
    overflow: hidden;
    background: var(--bg-primary);
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(79, 142, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 142, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black, transparent);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.18;
    pointer-events: none;
}

.orb1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--blue), transparent 70%);
    top: -100px;
    left: -100px;
    animation: orbFloat 8s ease-in-out infinite;
}

.orb2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--purple), transparent 70%);
    bottom: -100px;
    right: -100px;
    animation: orbFloat 10s ease-in-out infinite reverse;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, 20px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 214, 143, 0.1);
    border: 1px solid rgba(0, 214, 143, 0.25);
    color: var(--green);
    padding: 0.35rem 1rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-tag::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    animation: fadeInUp 0.8s ease-out 0.15s both;
    letter-spacing: -0.02em;
}

.hero-title .accent {
    background: linear-gradient(135deg, var(--blue) 0%, var(--purple) 60%, var(--pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 580px;
    margin: 0 auto 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.45s both;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s ease;
    font-size: 0.95rem;
    font-family: var(--font-display);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--blue);
    color: white;
    box-shadow: 0 0 30px rgba(79, 142, 255, 0.3);
}

.btn-primary:hover {
    background: #6aa0ff;
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(79, 142, 255, 0.5);
}

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

.btn-secondary:hover {
    border-color: var(--blue);
    color: var(--blue);
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    animation: fadeInUp 0.8s ease-out 0.75s both;
}

.social-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-bright);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all 0.25s ease;
}

.social-links a:hover {
    border-color: var(--blue);
    color: var(--blue);
    background: rgba(79, 142, 255, 0.08);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-family: var(--font-mono);
    letter-spacing: 0.1em;
    animation: bounce 2s infinite;
}

/* ===========================
   SECTION SHARED
=========================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--blue);
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto;
}

/* ===========================
   ABOUT SECTION
=========================== */
.about-section {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-icon {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.info-icon.blue { background: rgba(79, 142, 255, 0.15); color: var(--blue); border: 1px solid rgba(79, 142, 255, 0.3); }
.info-icon.green { background: rgba(0, 214, 143, 0.15); color: var(--green); border: 1px solid rgba(0, 214, 143, 0.3); }
.info-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--purple); border: 1px solid rgba(168, 85, 247, 0.3); }

.info-text h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.info-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: border-color 0.3s ease;
}

.detail-card:hover {
    border-color: var(--border-bright);
}

.detail-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-primary);
}

.detail-card h3 i {
    color: var(--blue);
}

.education-item {
    margin-bottom: 1.25rem;
    padding-left: 0.75rem;
    border-left: 2px solid var(--border-bright);
}

.education-item:last-child { margin-bottom: 0; }

.education-item h4 {
    font-weight: 700;
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.education-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.edu-meta {
    color: var(--blue) !important;
    font-family: var(--font-mono);
    font-size: 0.8rem !important;
    margin-top: 0.2rem;
}

.certifications {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.cert-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.4rem 0;
}

.cert-item i.fa-star { color: var(--yellow); flex-shrink: 0; margin-top: 2px; }

.sap-cert {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.08), rgba(79, 142, 255, 0.08));
    border: 1px solid rgba(168, 85, 247, 0.25);
    border-radius: 8px;
    padding: 0.75rem !important;
    margin-bottom: 0.5rem;
}

.sap-cert i.fa-trophy {
    color: var(--yellow);
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.sap-cert strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.cert-meta {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--purple);
    margin-top: 0.2rem;
}

/* ===========================
   SKILLS SECTION
=========================== */
.skills-section {
    padding: 6rem 0;
    background-color: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.75rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    opacity: 0;
    transition: opacity 0.3s;
}

.skill-card:nth-child(1)::before { background: var(--blue); }
.skill-card:nth-child(2)::before { background: var(--green); }
.skill-card:nth-child(3)::before { background: var(--purple); }
.skill-card:nth-child(4)::before { background: var(--yellow); }

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-bright);
}

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

.skill-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

.skill-icon.frontend { background: rgba(79, 142, 255, 0.15); color: var(--blue); }
.skill-icon.backend { background: rgba(0, 214, 143, 0.15); color: var(--green); }
.skill-icon.database { background: rgba(168, 85, 247, 0.15); color: var(--purple); }
.skill-icon.tools { background: rgba(245, 158, 11, 0.15); color: var(--yellow); }

.skill-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.skill-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skill-dot.frontend { background: var(--blue); }
.skill-dot.backend { background: var(--green); }
.skill-dot.database { background: var(--purple); }
.skill-dot.tools { background: var(--yellow); }

/* ===========================
   PROJECTS SECTION
=========================== */
.projects-section {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.featured-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.other-projects-header {
    margin-bottom: 1.5rem;
}

.other-projects-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.other-projects-header h3::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.other-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-bright);
    background: var(--bg-card-hover);
}

.project-card.featured {
    padding: 1.75rem;
}

.project-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--blue);
    border: 1px solid rgba(79, 142, 255, 0.3);
    background: rgba(79, 142, 255, 0.08);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.project-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    gap: 1rem;
}

.project-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    flex: 1;
    color: var(--text-primary);
    line-height: 1.3;
}

.project-card.featured h3 {
    font-size: 1.15rem;
}

.project-links {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.project-link {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-bright);
    border-radius: 7px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

.project-link:hover {
    color: var(--blue);
    border-color: var(--blue);
    background: rgba(79, 142, 255, 0.08);
}

.project-link.live:hover {
    color: var(--green);
    border-color: var(--green);
    background: rgba(0, 214, 143, 0.08);
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.9rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tech-tag {
    background: rgba(79, 142, 255, 0.1);
    border: 1px solid rgba(79, 142, 255, 0.2);
    color: var(--blue);
    padding: 0.2rem 0.65rem;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 0.03em;
}

.tech-tag.small {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-bright);
    color: var(--text-muted);
    font-size: 0.7rem;
}

/* ===========================
   CONTACT SECTION
=========================== */
.contact-section {
    padding: 6rem 0;
    background-color: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: border-color 0.3s;
}

.contact-item:hover {
    border-color: var(--border-bright);
}

.contact-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-icon.blue { background: rgba(79, 142, 255, 0.15); color: var(--blue); }
.contact-icon.green { background: rgba(0, 214, 143, 0.15); color: var(--green); }
.contact-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--purple); }

.contact-item p {
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.contact-item a:hover { color: var(--blue); }

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-display);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.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(--blue);
    box-shadow: 0 0 0 3px rgba(79, 142, 255, 0.1);
}

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

.form-status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    display: none;
}

.form-status.success {
    background: rgba(0, 214, 143, 0.15);
    border: 1px solid rgba(0, 214, 143, 0.3);
    color: var(--green);
    display: block;
}

.form-status.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
    display: block;
}

/* ===========================
   FOOTER
=========================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    color: var(--text-muted);
    font-size: 1rem;
    transition: color 0.2s;
}

.footer-social a:hover {
    color: var(--blue);
}

/* ===========================
   THANK YOU SECTION
=========================== */
.thankyou-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-primary);
    padding: 2rem;
}

.thankyou-container {
    max-width: 600px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 3rem;
    animation: slideUp 0.8s ease-out;
}

.thankyou-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.thankyou-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.thankyou-animation {
    font-size: 4rem;
    margin-bottom: 2rem;
}

.hidden {
    display: none !important;
}

/* ===========================
   ANIMATIONS
=========================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(25px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 15, 0.97);
        border-bottom: 1px solid var(--border);
        padding: 1rem;
        gap: 0.25rem;
    }

    .nav-menu.active { display: flex; }
    .nav-menu-toggle { display: block; }

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

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

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

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

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

@media (max-width: 480px) {
    .container { padding: 0 1rem; }
    .hero-section { padding: 5rem 1rem 3rem; }
    .about-section,
    .skills-section,
    .projects-section,
    .contact-section { padding: 4rem 0; }
    .section-header { margin-bottom: 2.5rem; }
    .skills-grid { grid-template-columns: 1fr; }
}