:root {
  /* Professional Color Palette */
  --primary: #1a3a52;
  --primary-light: #2d5773;
  --secondary: #0f766e;
  --accent: #ea580c;
  --accent-light: #fb923c;
  --dark: #0f172a;
  --light: #f8fafc;
  --gray: #64748b;
  --gray-light: #e2e8f0;

  /* Typography */
  --font-display: "Playfair Display", serif;
  --font-body: "DM Sans", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  background: var(--light);
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.5rem 2rem;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

nav.scrolled {
  padding: 1rem 2rem;
  box-shadow: 0 2px 30px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--primary);
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 4rem;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1a3a52 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.03)"/></svg>');
  opacity: 0.4;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 800px;
}

.hero-label {
  display: inline-block;
  background: rgba(234, 88, 12, 0.15);
  color: var(--accent-light);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2rem;
  border: 1px solid rgba(234, 88, 12, 0.3);
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  color: white;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.4s both;
  letter-spacing: -0.03em;
}

.hero-highlight {
  background: linear-gradient(
    120deg,
    var(--accent) 0%,
    var(--accent-light) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.35rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 3rem;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 20px rgba(234, 88, 12, 0.3);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(234, 88, 12, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  animation: fadeInUp 0.8s ease 1s both;
}

.stat {
  text-align: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--accent-light);
  display: block;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

/* Section Styles */
section {
  padding: var(--spacing-xl) 2rem;
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-label {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 1rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--gray);
  max-width: 700px;
  margin: 0 auto;
}

/* About Section */
.about {
  background: white;
}

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

.about-text h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.highlights {
  list-style: none;
  margin-top: 2rem;
}

.highlights li {
  padding: 1rem 0;
  display: flex;
  align-items: start;
  gap: 1rem;
  border-bottom: 1px solid var(--gray-light);
}

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

.highlights i {
  color: var(--accent);
  font-size: 1.25rem;
  margin-top: 0.25rem;
}

.values-grid {
  display: grid;
  gap: 1.5rem;
}

.value-card {
  background: var(--light);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--accent);
  transition: all 0.3s ease;
}

.value-card:hover {
  transform: translateX(8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.value-card h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.value-card p {
  color: var(--gray);
  font-size: 1rem;
  line-height: 1.6;
}

/* Services Section */
.services {
  background: var(--light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  background: white;
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.service-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
  font-size: 1.75rem;
}

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

.service-card p {
  color: var(--gray);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.service-ideal {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.service-ideal-text {
  font-size: 0.95rem;
  color: var(--gray);
}

/* Skills Section */
.skills {
  background: white;
}

.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.skill-category h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

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

.skill-item {
  padding: 0.75rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--gray-light);
}

.skill-item:last-child {
  border-bottom: none;
}

.skill-name {
  font-weight: 600;
  color: var(--dark);
}

.skill-level {
  font-size: 0.85rem;
  color: var(--gray);
  font-weight: 500;
}

/* Projects Section */
.projects {
  background: var(--dark);
  color: white;
}

.projects .section-title {
  color: white;
}

.projects .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.projects-grid {
  display: grid;
  gap: 3rem;
  margin-top: 3rem;
}

.project-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.4s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 60px rgba(234, 88, 12, 0.2);
}

.project-content {
  padding: 2.5rem;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 1.5rem;
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: white;
  margin-bottom: 0.5rem;
}

.project-type {
  display: inline-block;
  background: rgba(234, 88, 12, 0.2);
  color: var(--accent-light);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
}

.project-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.project-features {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.project-features li {
  color: rgba(255, 255, 255, 0.7);
  padding-left: 1.75rem;
  position: relative;
}

.project-features li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent-light);
  font-weight: bold;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0;
}

.tech-tag {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.project-links {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.project-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* Education Section */
.education {
  background: white;
}

.education-timeline {
  max-width: 900px;
  margin: 3rem auto;
}

.timeline-item {
  position: relative;
  padding-left: 3rem;
  padding-bottom: 3rem;
  border-left: 2px solid var(--gray-light);
}

.timeline-item:last-child {
  border-left-color: transparent;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--gray-light);
}

.timeline-content {
  background: var(--light);
  padding: 2rem;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.timeline-content:hover {
  transform: translateX(8px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.education-type {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.timeline-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.timeline-meta {
  color: var(--gray);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.timeline-content p {
  color: var(--gray);
  line-height: 1.7;
}

.timeline-content ul {
  margin-top: 1rem;
  padding-left: 1.5rem;
}

.timeline-content li {
  color: var(--gray);
  margin-bottom: 0.5rem;
}

/* Contact Section */
.contact {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-light) 100%
  );
  color: white;
}

.contact .section-title,
.contact .section-label {
  color: white;
}

.contact .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-info {
  padding-right: 2rem;
}

.contact-methods {
  list-style: none;
  margin-top: 2rem;
}

.contact-method {
  display: flex;
  align-items: start;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-method:last-child {
  border-bottom: none;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.contact-method h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.contact-method a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-method a:hover {
  color: var(--accent-light);
}

.contact-form {
  background: rgba(255, 255, 255, 0.08);
  padding: 2.5rem;
  border-radius: 16px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-light);
  background: rgba(255, 255, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-group select option {
  background: var(--primary);
  color: white;
}

.submit-btn {
  width: 100%;
  padding: 1.25rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.submit-btn:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(234, 88, 12, 0.3);
}

/* Footer */
footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 4rem 2rem 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-about h3 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: white;
  margin-bottom: 1rem;
}

.footer-about p {
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

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

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

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

.footer-links h4 {
  color: white;
  font-family: var(--font-display);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  display: block;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--accent-light);
  padding-left: 0.5rem;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(234, 88, 12, 0.3);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 30px rgba(234, 88, 12, 0.5);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .about-content,
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .contact-info {
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 70%;
    max-width: 300px;
    background: white;
    flex-direction: column;
    padding: 6rem 2rem 2rem;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    gap: 1.5rem;
  }

  .nav-links.active {
    right: 0;
  }

  .menu-toggle {
    display: block;
  }

  .hero {
    padding: 6rem 1.5rem 3rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

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

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

  section {
    padding: 4rem 1.5rem;
  }

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

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

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

  .scroll-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  nav {
    padding: 1rem 1.5rem;
  }
}