* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #f7f9fc;
  color: #1f2937;
}

header {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  width: 90%;
  max-width: 1100px;
  margin: auto;
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  text-decoration: none;
  font-size: 1.8rem;
  font-weight: 700;
  color: #111827;
  transition: 0.3s ease;
}

.logo span {
  color: #2563eb;
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 24px;
}

.nav-links a {
  text-decoration: none;
  color: #374151;
  font-weight: 600;
}

.nav-links a:hover {
  color: #2563eb;
}

.hero {
  width: 90%;
  max-width: 1100px;
  min-height: 90vh;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.hero-text {
  flex: 1;
}

.hello {
  color: #2563eb;
  font-weight: bold;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 10px;
  color: #111827;
}

.hero h3 {
  font-size: 24px;
  color: #2563eb;
  margin-bottom: 20px;
}

.hero p {
  line-height: 1.7;
  max-width: 520px;
  color: #4b5563;
}

.hero-buttons {
  margin-top: 25px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background: #2563eb;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  margin-right: 10px;
  font-weight: bold;
}

.btn:hover {
  background: #1d4ed8;
}

.btn.outline {
  background: transparent;
  color: #2563eb;
  border: 2px solid #2563eb;
}

.btn.outline:hover {
  background: #2563eb;
  color: white;
}

.hero-img img {
  width: 320px;
  height: 320px;
  object-fit: cover;
  border-radius: 50%;
  border: 6px solid #2563eb;
}

.about-section {
  width: 90%;
  max-width: 1200px;
  margin: 90px auto;
  text-align: center;
}

.section-label {
  color: #f97316;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.about-section h2 {
  font-size: 46px;
  color: #0f172a;
  margin-bottom: 20px;
}

.section-subtitle {
  max-width: 750px;
  margin: 0 auto 70px;
  color: #6b7280;
  font-size: 20px;
  line-height: 1.6;
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.about-card {
  background: #ffffff;
  padding: 35px;
  border: 1px solid #e5e7eb;
  border-radius: 26px;
  text-align: left;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.05);
  transition: 0.3s ease;
}

.about-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 0.1);
}

.about-card i {
  width: 66px;
  height: 66px;
  background: #0b3a8a;
  color: #ffffff;
  border-radius: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 32px;
  margin-bottom: 35px;
}

.about-card h3 {
  color: #0f172a;
  font-size: 22px;
  margin-bottom: 14px;
}

.about-card p {
  color: #6b7280;
  font-size: 17px;
  line-height: 1.6;
}

/* Tablet */
@media (max-width: 992px) {
  .about-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-section h2 {
    font-size: 38px;
  }
}

/* Mobile */
@media (max-width: 576px) {
  .about-section {
    margin: 60px auto;
  }

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

  .about-card {
    padding: 28px;
  }

  .about-section h2 {
    font-size: 32px;
  }

  .section-subtitle {
    font-size: 17px;
    margin-bottom: 45px;
  }
}

.skills-section {
  width: 90%;
  max-width: 1300px;
  margin: 100px auto;
  text-align: center;
}

.skills-section h2 {
  font-size: 56px;
  color: #0f172a;
  margin-bottom: 20px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 70px;
}

.skill-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 28px;
  padding: 35px;
  text-align: left;
  min-height: 320px;
  box-shadow: 0 15px 40px rgba(15, 23, 42, 0.05);
  transition: 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.1);
}

.skill-card h3 {
  color: #6b7280;
  text-transform: uppercase;
  font-size: 16px;
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.skill-tags span {
  background: #eef2ff;
  color: #0f172a;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  transition: 0.3s ease;
}

.skill-tags span:hover {
  background: #0b3a8a;
  color: white;
}

@media (max-width: 1200px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {

  .skills-section h2 {
    font-size: 38px;
  }

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

  .skill-card {
    min-height: auto;
    padding: 28px;
  }
}

.section {
  width: 90%;
  max-width: 1100px;
  margin: 60px auto;
  padding: 50px;
  background: white;
  border-radius: 18px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
}

.section h2 {
  font-size: 32px;
  color: #111827;
  margin-bottom: 25px;
  text-align: center;
}

.section > p {
  line-height: 1.8;
  color: #4b5563;
  text-align: center;
  max-width: 800px;
  margin: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

.card {
  background: #f7f9fc;
  padding: 25px;
  border-radius: 14px;
  text-align: center;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.15);
}

.card i {
  font-size: 38px;
  color: #2563eb;
  margin-bottom: 15px;
}

.card h3 {
  margin-bottom: 12px;
  color: #111827;
}

.card p {
  color: #4b5563;
  line-height: 1.6;
}

.projects-section {
  width: 90%;
  max-width: 1300px;
  margin: 100px auto;
  text-align: center;
}

.projects-section h2 {
  font-size: 52px;
  color: #0f172a;
  margin-bottom: 18px;
}

.projects-grid {
  margin-top: 70px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 26px;
  overflow: hidden;
  text-align: left;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.05);
  transition: 0.3s ease;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 0.1);
}

.project-card img {
  width: 100%;
  height: 230px;
  object-fit: cover;
  cursor: pointer;
}

.project-content {
  padding: 28px;
}

.project-content h3 {
  color: #0f172a;
  font-size: 24px;
  margin-bottom: 12px;
}

.project-content p {
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 18px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.project-tags span {
  background: #eef2ff;
  color: #0b3a8a;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}

.project-content button {
  background: #0b3a8a;
  color: #ffffff;
  border: none;
  padding: 13px 24px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: 0.3s ease;
}

.project-content button:hover {
  background: #082b66;
  transform: translateY(-3px);
}

.project-modal {
  display: none;
  position: fixed;
  z-index: 999;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-content {
  background: #ffffff;
  width: 90%;
  max-width: 700px;
  border-radius: 24px;
  padding: 30px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-content img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 18px;
  margin-bottom: 25px;
}

.modal-content h3 {
  font-size: 28px;
  color: #0f172a;
  margin-bottom: 14px;
}

.modal-content p {
  color: #6b7280;
  line-height: 1.7;
  margin-bottom: 18px;
}

.modal-content ul {
  padding-left: 20px;
  color: #374151;
  line-height: 1.8;
}

.close-btn {
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 34px;
  color: #0f172a;
  cursor: pointer;
}

.demo-btn {
  display: inline-block;
  padding: 10px 18px;
  background-color: #000;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  margin-top: 10px;
}

.demo-btn:hover {
  background-color: #333;
}

@media (max-width: 992px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .projects-section h2 {
    font-size: 38px;
  }

  .modal-content img {
    height: 220px;
  }
}

.education-section {
  width: 90%;
  max-width: 1100px;
  margin: 80px auto;
  text-align: center;
}

.section-label {
  color: #f97316;
  text-transform: uppercase;
  letter-spacing: 6px;
  font-weight: bold;
  font-size: 14px;
}

.education-section h2 {
  font-size: 44px;
  margin: 15px 0;
  color: #111827;
}

.section-subtitle {
  color: #6b7280;
  font-size: 18px;
  margin-bottom: 70px;
}

.timeline {
  position: relative;
  max-width: 1000px;
  margin: auto;
}

.timeline::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 100%;
  background: #dbeafe;
  left: 50%;
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 25px 40px;
}

.timeline-item::after {
  content: "";
  position: absolute;
  top: 45px;
  width: 18px;
  height: 18px;
  background: #0b3a8a;
  border-radius: 50%;
  z-index: 2;
}

.timeline-item.left {
  left: 0;
  text-align: right;
}

.timeline-item.right {
  left: 50%;
  text-align: left;
}

.timeline-item.left::after {
  right: -9px;
}

.timeline-item.right::after {
  left: -9px;
}

.timeline-card {
  background: #ffffff;
  padding: 28px 32px;
  border-radius: 26px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.05);
}

.timeline-card span {
  display: block;
  color: #f97316;
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.timeline-card h3 {
  color: #111827;
  font-size: 21px;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 55px;
    padding-right: 0;
  }

  .timeline-item.left,
  .timeline-item.right {
    left: 0;
    text-align: left;
  }

  .timeline-item.left::after,
  .timeline-item.right::after {
    left: 11px;
  }

  .education-section h2 {
    font-size: 34px;
  }
}

.training-section {
  width: 90%;
  max-width: 1300px;
  margin: 100px auto;
  text-align: center;
}

.training-section h2 {
  font-size: 52px;
  color: #0f172a;
  margin-bottom: 20px;
}

.training-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  text-align: left;
}

.column-title {
  font-size: 24px;
  color: #0f172a;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.column-title i {
  color: #f97316;
}

.training-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 26px;
  padding: 32px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.04);
  transition: 0.3s ease;
}

.training-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

.training-icon {
  width: 64px;
  height: 64px;
  background: #ffedd5;
  color: #f97316;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.training-icon i {
  font-size: 30px;
}

.training-type {
  text-transform: uppercase;
  color: #6b7280;
  font-size: 15px;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.training-card h4 {
  color: #0f172a;
  font-size: 22px;
  line-height: 1.4;
}

/* Mobile */
@media (max-width: 900px) {
  .training-wrapper {
    grid-template-columns: 1fr;
  }

  .training-section h2 {
    font-size: 34px;
  }

  .training-card {
    padding: 24px;
  }
}

.contact-section {
  width: 90%;
  max-width: 1300px;
  margin: 100px auto;
  text-align: center;
}

.contact-section h2 {
  font-size: 48px;
  color: #0f172a;
  margin-bottom: 18px;
}

.contact-wrapper {
  margin-top: 70px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 35px;
  text-align: left;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-card,
.follow-card,
.contact-form {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 28px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.04);
}

.contact-card {
  padding: 25px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: #0b3a8a;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 28px;
}

.contact-card p,
.follow-card p {
  text-transform: uppercase;
  color: #6b7280;
  font-size: 14px;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.contact-card h3 {
  color: #0f172a;
  font-size: 22px;
}

.follow-card {
  padding: 30px;
}

.follow-icons {
  display: flex;
  gap: 14px;
  margin-top: 12px;
}

.follow-icons a {
  width: 48px;
  height: 48px;
  background: #f1f5f9;
  color: #0f172a;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  transition: 0.3s ease;
}

.follow-icons a:hover {
  background: #0b3a8a;
  color: #ffffff;
}

.follow-icons i {
  font-size: 24px;
}

.contact-form {
  padding: 38px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  color: #0f172a;
  font-weight: 600;
  margin-bottom: 10px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid #e5e7eb;
  outline: none;
  border-radius: 18px;
  padding: 18px 20px;
  font-size: 16px;
  color: #0f172a;
  background: #ffffff;
}

.form-group textarea {
  height: 180px;
  resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #0b3a8a;
}

.send-btn {
  background: #0b3a8a;
  color: #ffffff;
  border: none;
  padding: 16px 32px;
  border-radius: 999px;
  font-size: 18px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: 0.3s ease;
}

.send-btn:hover {
  background: #082b66;
  transform: translateY(-3px);
}

/* Mobile */
@media (max-width: 900px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-section h2 {
    font-size: 36px;
  }
}

.social-icons a {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: #f8fafc;
    color: #0f172a;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    font-size: 26px;
    transition: 0.3s;
}

.social-icons a:hover {
    background: #0b3a8a;
    color: white;
    transform: translateY(-5px);
}

.menu-toggle {
  display: none;
  font-size: 28px;
  cursor: pointer;
  color: #111827;
}

@media (max-width: 768px) {
  .navbar {
    position: relative;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    right: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 20px 0;
    display: none;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border-radius: 0 0 16px 16px;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 12px 0;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero h3 {
    font-size: 20px;
  }

  .hero p {
    margin: auto;
  }

  .hero-img img {
    width: 240px;
    height: 240px;
  }

  .section {
    padding: 30px 20px;
  }

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

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

  .follow-icons {
    flex-wrap: wrap;
  }
}