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

:root {
    --indigo: #4f46e5;
    --indigo-dark: #4338ca;
    --indigo-light: #c7d2fe;
    --cyan: #06b6d4;
    --cyan-light: #cffafe;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background-color: var(--white);
}

/* ==================== NAVIGATION ==================== */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    border-bottom: 1px solid var(--gray-100);
    z-index: 50;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(to right, var(--indigo), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand p {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.nav-menu {
    display: none;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--indigo);
}

.nav-menu .cta-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--indigo);
    color: var(--white);
    border-radius: 0.5rem;
    transition: background-color 0.3s;
}

.nav-menu .cta-btn:hover {
    background-color: var(--indigo-dark);
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--gray-900);
    transition: all 0.3s;
}

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

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

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

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
    .menu-toggle {
        display: none;
    }
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    text-decoration: none;
    color: var(--gray-700);
}

/* ==================== HERO SECTION ==================== */
.hero {
    padding: 8rem 1rem;
    background: linear-gradient(135deg, #f9fafb 0%, var(--white) 50%, #f9fafb 100%);
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-content h2 {
    font-size: 3rem;
    font-weight: bold;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .hero-content h2 {
        font-size: 3.75rem;
    }
}

.hero-content h2 .highlight {
    background: linear-gradient(to right, var(--indigo), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--indigo);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--indigo-dark);
}

.btn-secondary {
    border: 2px solid var(--gray-300);
    color: var(--gray-900);
    background: transparent;
}

.btn-secondary:hover {
    border-color: var(--indigo);
    color: var(--indigo);
}

.hero-image {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .hero-image {
        display: flex;
    }
}

.profile-photo {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, #99f6e4, #a5f3fc);
    border-radius: 9999px;
    filter: blur(64px);
    opacity: 0.4;
}

.photo-circle {
    position: relative;
    width: 256px;
    height: 256px;
    border-radius: 9999px;
    border: 4px solid var(--indigo);
    overflow: hidden;
    background-color: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-badge {
    position: absolute;
    bottom: -16px;
    right: -16px;
    background-color: var(--indigo);
    color: var(--white);
    border-radius: 9999px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.skills-box {
    background: var(--white);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--gray-100);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    max-width: 320px;
}

.skills-box .skill-item {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    align-items: flex-start;
}

.skill-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.skill-dot:nth-child(1) { background-color: var(--indigo); }
.skill-item:nth-child(2) .skill-dot { background-color: var(--cyan); }
.skill-item:nth-child(3) .skill-dot { background-color: #10b981; }
.skill-item:nth-child(4) .skill-dot { background-color: #f97316; }

.skill-text {
    color: var(--gray-700);
    font-weight: 500;
    font-size: 0.875rem;
}

/* ==================== SERVICES SECTION ==================== */
.services {
    padding: 5rem 1rem;
}

.services-container {
    max-width: 1280px;
    margin: 0 auto;
}

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

.section-header h3 {
    font-size: 2.25rem;
    font-weight: bold;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.service-card {
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--gray-200);
    background: var(--white);
    transition: all 0.3s;
}

.service-card:hover {
    border-color: var(--indigo);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.service-icon {
    color: var(--indigo);
    margin-bottom: 1rem;
    font-size: 2rem;
    transition: color 0.3s;
}

.service-card:hover .service-icon {
    color: var(--cyan);
}

.service-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.service-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ==================== PROCESS SECTION ==================== */
.process {
    padding: 5rem 1rem;
    background: linear-gradient(to right, #eef2ff, #f0f9ff);
}

.process-container {
    max-width: 1280px;
    margin: 0 auto;
}

.process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .process-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.process-card {
    position: relative;
    background: var(--white);
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
    height: 100%;
}

@media (min-width: 768px) {
    .process-card::after {
        content: '';
        position: absolute;
        top: 48px;
        left: 60%;
        width: 40%;
        height: 2px;
        background: linear-gradient(to right, var(--indigo), var(--cyan));
    }

    .process-card:last-child::after {
        display: none;
    }
}

.process-number {
    font-size: 1.875rem;
    font-weight: bold;
    background: linear-gradient(to right, var(--indigo), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
}

.process-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.process-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* ==================== PORTFOLIO SECTION ==================== */
.portfolio {
    padding: 5rem 1rem;
}

.portfolio-container {
    max-width: 1280px;
    margin: 0 auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.portfolio-card {
    display: flex;
    flex-direction: column;
    min-height: 360px;
    text-decoration: none;
    color: inherit;
    background: var(--white);
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
    cursor: pointer;
}

.portfolio-card:hover {
    border-color: var(--indigo);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.portfolio-image {
    flex: 0 0 80%;
    min-height: 240px;
    background: linear-gradient(to bottom right, #f3f4f6, #d1d5db);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    border-radius: 0.6rem;
}

.portfolio-content {
    flex: 0 0 20%;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
}

.portfolio-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    transition: color 0.3s;
}

.portfolio-card:hover h4 {
    color: var(--indigo);
}

.portfolio-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--indigo);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.3s;
    margin-top: 0.25rem;
}

.portfolio-link:hover {
    color: var(--indigo-dark);
}

.portfolio-info {
    background: #eef2ff;
    border: 1px solid #c7d2fe;
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
}

.portfolio-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.portfolio-info p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.code-block {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-300);
    font-size: 0.75rem;
    color: var(--gray-700);
    overflow-x: auto;
    margin-bottom: 1.5rem;
    font-family: 'Courier New', monospace;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.code-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 0.75rem;
}

.instruction-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
    font-size: 0.875rem;
}

.instruction-list p {
    color: var(--gray-700);
}

.instruction-list .label {
    font-weight: 600;
    color: var(--gray-800);
}

/* ==================== EXPERTISE SECTION ==================== */
.expertise {
    padding: 5rem 1rem;
    background-color: var(--gray-50);
}

.expertise-container {
    max-width: 1280px;
    margin: 0 auto;
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.expertise-card {
    background: var(--white);
    border-radius: 0.75rem;
    padding: 2rem;
    border: 1px solid var(--gray-200);
}

.expertise-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.expertise-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.expertise-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.expertise-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--indigo);
    flex-shrink: 0;
}

.expertise-item p {
    color: var(--gray-700);
    font-size: 0.875rem;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    padding: 5rem 1rem;
}

.contact-container {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr 1fr;
    }
}

.contact-content h3 {
    font-size: 2.25rem;
    font-weight: bold;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.contact-content p {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.contact-icon {
    color: var(--indigo);
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 4px;
}

.contact-item h4 {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.3s;
}

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

.contact-item p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.social-box {
    background: linear-gradient(135deg, #f9fafb, #f3f4f6);
    border-radius: 0.75rem;
    padding: 2rem;
    border: 1px solid var(--gray-200);
}

.social-box h4 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

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

.social-link {
    padding: 1rem;
    background: var(--white);
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
    text-decoration: none;
    transition: all 0.3s;
    display: block;
}

.social-link:nth-child(1):hover {
    border-color: #ec4899;
    background-color: #fce7f3;
}

.social-link:nth-child(2):hover {
    border-color: #2563eb;
    background-color: #dbeafe;
}

.social-link:nth-child(3):hover {
    border-color: #16a34a;
    background-color: #dcfce7;
}

.social-link:nth-child(4):hover {
    border-color: #dc2626;
    background-color: #fee2e2;
}

.social-link p {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.social-link small {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* ==================== FOOTER ==================== */
footer {
    border-top: 1px solid var(--gray-200);
    padding: 2rem 1rem;
    background: var(--white);
    text-align: center;
    color: var(--gray-600);
}

footer-container {
    max-width: 1280px;
    margin: 0 auto;
}

footer p {
    color: var(--gray-600);
}

footer .copyright {
    margin-bottom: 0.5rem;
}

footer .tagline {
    font-size: 0.875rem;
}

/* ==================== UTILITIES ==================== */
.hidden {
    display: none;
}

.icon {
    width: 24px;
    height: 24px;
    display: inline-block;
}

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