* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

:root {
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --border-color: #e5e7eb;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation - Modern & Professional */
.navbar-custom {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(229, 231, 235, 0.5);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-custom::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.navbar-custom.scrolled::before {
  opacity: 1;
}

.navbar-custom.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border-bottom-color: rgba(102, 126, 234, 0.2);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  transition: transform 0.3s ease;
  letter-spacing: -0.5px;
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links ul {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  align-items: center;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.65rem 1.25rem;
  border-radius: 0.6rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: block;
  overflow: hidden;
}

.nav-links a::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.08),
    rgba(118, 75, 162, 0.08)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 0.6rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0.4rem;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 50%;
  height: 2.5px;
  background: var(--gradient);
  border-radius: 2px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover {
  color: var(--primary-color);
  transform: translateY(-1px);
}

.nav-links a:hover::before {
  opacity: 1;
}

.nav-links a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-links a.active {
  color: var(--primary-color);
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
}

.nav-links a.active::after {
  transform: translateX(-50%) scaleX(1);
}

.burger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 6px;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1001;
}

.burger:hover {
  background: rgba(102, 126, 234, 0.1);
}

.burger span {
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  border-radius: 3px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(9px, 9px);
  background: linear-gradient(90deg, #f5576c, #f093fb);
}

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

.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(9px, -9px);
  background: linear-gradient(90deg, #f5576c, #f093fb);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  gap: 4rem;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2.5rem;
  font-weight: 400;
}

.hero-name {
  font-size: 3.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

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

.btn {
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.hero-image {
  flex: 1;
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  top: 50%;
  right: 10%;
  animation-delay: 2s;
}

.shape-3 {
  width: 150px;
  height: 150px;
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  bottom: 10%;
  left: 30%;
  animation-delay: 4s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

/* Sections */
section {
  padding: 6rem 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* About Section */
.about {
  background-color: var(--bg-secondary);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-text p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

/* Shared card surface styles (used across multiple sections) */
.skill-card,
.project-card,
.education-item,
.contact-form,
.info-item {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  transition: all 0.3s ease;
}

.skill-card {
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

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

.skill-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.skill-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.08),
    rgba(118, 75, 162, 0.08)
  );
  color: var(--text-primary);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.25s ease;
  cursor: default;
}

.skill-tag:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
  color: var(--primary-color);
}

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

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

.project-card {
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project-image {
  width: 100%;
  height: 200px;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gradient);
  opacity: 0.1;
}

.project-content {
  padding: 1.5rem;
}

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

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tech-tag {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
  color: var(--primary-color);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
}

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

.project-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.project-link:hover {
  color: var(--secondary-color);
}

/* Education Section */
.education {
  background-color: var(--bg-secondary);
}

.education-content {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.education-item {
  padding: 2rem;
  box-shadow: var(--shadow-md);
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.education-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.education-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
  border-radius: 0.75rem;
  flex-shrink: 0;
}

.education-details {
  flex: 1;
}

.education-details h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.education-institution {
  font-size: 1rem;
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.education-period {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.education-grade {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Contact Section */
.contact-content {
  max-width: 1000px;
  margin: 0 auto;
}

.contact-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
  text-align: center;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-form {
  padding: 2.5rem;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-md);
}

.contact-form:hover {
  box-shadow: var(--shadow-lg);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: all 0.3s ease;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  background: white;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
}

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

.btn-submit {
  width: 100%;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn-submit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition:
    width 0.6s,
    height 0.6s;
}

.btn-submit:hover::before {
  width: 300px;
  height: 300px;
}

.send-icon {
  transition: transform 0.3s ease;
}

.btn-submit:hover .send-icon {
  transform: translateX(5px);
}

.btn-submit:active {
  transform: scale(0.98);
}

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

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.info-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-color);
}

.info-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    rgba(102, 126, 234, 0.1),
    rgba(118, 75, 162, 0.1)
  );
  border-radius: 0.875rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.info-icon::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 0.875rem;
}

.info-item:hover .info-icon::before {
  opacity: 1;
}

.info-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary-color);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.info-item:hover .info-icon svg {
  stroke: white;
  transform: scale(1.1) rotate(5deg);
}

.info-item:hover .info-icon {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.info-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.info-item a {
  color: var(--primary-color);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  display: inline-block;
}

.info-item a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* Footer */
.footer {
  background-color: var(--text-primary);
  color: white;
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    right: -100%;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    width: 280px;
    height: 100vh;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    display: block;
    z-index: 1000;
    padding-top: 5rem;
  }

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

  .nav-links ul {
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 0.5rem;
  }

  .nav-links a {
    font-size: 1.1rem;
    display: block;
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 0.5rem;
  }

  .nav-links a:hover {
    transform: translateX(5px);
    background: linear-gradient(
      135deg,
      rgba(102, 126, 234, 0.15),
      rgba(118, 75, 162, 0.15)
    );
  }

  .burger {
    display: flex;
  }

  .nav-container {
    padding: 1rem 1.5rem;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 6rem 1rem 3rem;
  }

  .hero-title {
    font-size: 2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .gradient-text {
    font-size: 1.5rem;
  }

  .hero-name {
    font-size: 2rem;
  }

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

  .hero-image {
    height: 300px;
    margin-top: 2rem;
  }

  .shape-1 {
    width: 200px;
    height: 200px;
  }

  .shape-2 {
    width: 150px;
    height: 150px;
  }

  .shape-3 {
    width: 100px;
    height: 100px;
  }

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

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

  .container {
    padding: 0 1rem;
  }

  section {
    padding: 4rem 0;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-form {
    padding: 2rem 1.5rem;
  }

  .contact-info {
    order: -1;
  }

  .education-item {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }

  .education-icon {
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .gradient-text {
    font-size: 1.25rem;
  }

  .hero-name {
    font-size: 1.75rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }

  .contact-form {
    padding: 1.5rem 1rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }

  .info-item {
    padding: 1.25rem;
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .info-icon {
    width: 56px;
    height: 56px;
  }

  .info-icon svg {
    width: 22px;
    height: 22px;
  }
}