:root {
  --primary: #223254;      /* Professional blue */
  --secondary: #f7f9fb;    /* Clean light background */
  --accent: #2ec4b6;       /* Modern teal accent */
  --dark: #1a1a1a;         /* Deep neutral */
  --light: #fff;
  --shadow: 0 4px 24px rgba(34, 50, 84, 0.10);
  --radius: 18px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

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

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--secondary);
  color: var(--dark);
  line-height: 1.6;
}

header {
  background: linear-gradient(90deg, var(--primary) 60%, var(--accent) 100%);
  color: var(--light);
  padding-bottom: 2rem;
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 5vw 0 5vw;
  position: relative;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 2px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  transition: right 0.3s, opacity 0.3s;
}

nav a {
  color: var(--light);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

nav a:hover, .download-btn:hover {
  color: var(--accent);
  background: var(--light);
}

.btn, .download-btn {
  background: var(--accent);
  color: var(--light);
  padding: 0.75rem 2rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: background var(--transition), transform var(--transition);
  margin-right: 1rem;
  text-decoration: none;
  display: inline-block;
  margin-bottom: 0.7rem;
}

.btn:last-child, .download-btn:last-child {
  margin-bottom: 0;
}

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3rem 5vw 0 5vw;
  flex-wrap: wrap;
}

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

.hero-content h1 {
  font-size: 3rem;
  font-weight: 700;
}

.hero-content h2 {
  font-size: 1.5rem;
  margin: 1rem 0;
  color: var(--secondary);
}

.hero-content p {
  margin-bottom: 2rem;
}

.hero-img img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 6px solid var(--light);
  box-shadow: var(--shadow);
}

main {
  padding: 3rem 5vw;
}

section {
  margin-bottom: 3rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
  font-weight: 700;
}

.about p {
  font-size: 1.1rem;
  max-width: 700px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
  align-items: center;
  margin-bottom: 1.5rem;
}

.skills-list span {
  background: var(--primary);
  color: var(--light);
  padding: 0.7rem 1.5rem;
  border-radius: 14px;
  font-weight: 600;
  font-size: 1.08rem;
  margin-bottom: 0.5rem;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 2px 8px rgba(43,45,66,0.10);
  letter-spacing: 0.5px;
  border: 2px solid var(--accent);
  cursor: pointer;
}

.skills-list span:hover {
  background: var(--accent);
  color: var(--light);
  box-shadow: 0 4px 16px rgba(239,35,60,0.13);
  transform: translateY(-2px) scale(1.05);
  border-color: var(--primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--light);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 8px 32px rgba(30, 144, 255, 0.2);
  border-color: var(--primary);
}

.project-card h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.project-card .tag {
  display: inline-block;
  background: var(--accent);
  color: var(--light);
  border-radius: 8px;
  padding: 0.2rem 0.8rem;
  font-size: 0.9rem;
  margin: 0.3rem 0.3rem 0 0;
}

.timeline {
  border-left: 3px solid var(--accent);
  padding-left: 2rem;
}

.timeline-item {
  margin-bottom: 2rem;
  position: relative;
}

.timeline-item:before {
  content: '';
  position: absolute;
  left: -2.1rem;
  top: 0.3rem;
  width: 1rem;
  height: 1rem;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--light);
}

.timeline-item h3 {
  margin-bottom: 0.2rem;
  color: var(--primary);
}

.timeline-item span {
  font-size: 0.95rem;
  color: #666;
}

.contact-container {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  align-items: flex-start;
  justify-content: center;
  margin-top: 2rem;
}

.contact form {
  background: var(--light);
  border: 2px solid var(--accent);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(30, 144, 255, 0.10);
  padding: 2.5rem 2.8rem;
  min-width: 340px;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  transition: box-shadow 0.3s cubic-bezier(.4,0,.2,1), transform 0.2s;
  flex: 1 1 380px;
  align-items: stretch;
}

.contact form:hover {
  box-shadow: 0 12px 40px rgba(30, 144, 255, 0.18);
  transform: translateY(-4px) scale(1.02);
  border-color: var(--accent);
}

.contact-info-card {
  background: linear-gradient(135deg, var(--primary) 60%, var(--accent) 100%);
  color: var(--light);
  border: 2px solid var(--accent);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(30, 144, 255, 0.18);
  padding: 2.5rem 2.8rem;
  min-width: 340px;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1), box-shadow 0.3s cubic-bezier(.4,0,.2,1);
  flex: 1 1 380px;
  align-items: stretch;
}

.contact-info-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 48px rgba(30, 144, 255, 0.25);
  border-color: var(--accent);
}

.contact-info-card h3 {
  margin-bottom: 0.7rem;
  color: var(--light);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.contact-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 1.08rem;
  color: var(--primary);
  background: rgba(46,196,182,0.08);
  border-radius: 12px;
  padding: 0.5rem 1rem;
  margin-bottom: 0.3rem;
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
  word-break: break-all;
  width: 100%;
  box-shadow: 0 2px 8px rgba(30,144,255,0.07);
}

.contact-row:hover {
  background: var(--accent);
  color: var(--light);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 4px 16px rgba(255,111,97,0.13);
}

.contact-row a {
  color: var(--accent);
  text-decoration: underline;
  font-weight: 500;
  transition: color 0.2s;
  overflow-wrap: anywhere;
}

.contact-row a:hover {
  color: #fff;
}

.contact-icon {
  font-size: 1.3rem;
  background: var(--light);
  color: var(--accent);
  border-radius: 50%;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(30,144,255,0.10);
}

.contact form input, .contact form textarea {
  padding: 0.9rem;
  border-radius: 12px;
  border: 1.5px solid #cce0ff;
  font-size: 1.05rem;
  background: #fafdff;
  transition: border 0.2s;
}

.contact form input:focus, .contact form textarea:focus {
  border: 1.5px solid var(--accent);
  outline: none;
}

.contact button {
  background: linear-gradient(90deg, var(--primary) 60%, var(--accent) 100%);
  color: var(--light);
  border: none;
  padding: 0.9rem;
  border-radius: 12px;
  font-size: 1.08rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  box-shadow: 0 4px 16px rgba(30, 144, 255, 0.13);
  margin-top: 0.5rem;
}

.contact button:hover {
  background: var(--accent);
  color: var(--light);
  transform: translateY(-2px) scale(1.04);
}

footer {
  background: var(--primary);
  color: var(--light);
  text-align: center;
  padding: 1.2rem 0;
  font-size: 1rem;
  margin-top: 2rem;
  border-radius: var(--radius) var(--radius) 0 0;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  cursor: pointer;
  background: var(--primary);
  border-radius: 10px;
  border: 2px solid var(--accent);
  z-index: 1001;
  box-shadow: 0 2px 8px rgba(43,45,66,0.10);
}

.hamburger span {
  display: block;
  width: 28px;
  height: 4px;
  background: var(--accent);
  margin: 5px 0;
  border-radius: 2px;
  transition: 0.3s;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }
  .hero-img img {
    margin-top: 1.5rem;
  }
  .contact-container {
    flex-direction: column;
    gap: 2rem;
    align-items: stretch;
  }
  .contact-info-card, .contact form {
    max-width: 100%;
    width: 100%;
    min-width: unset;
  }
}

@media (max-width: 1110px) {
  nav ul {
    position: fixed;
    top: 0;
    right: -100vw;
    width: 70vw;
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    gap: 2rem;
    padding: 4rem 2rem 2rem 2rem;
    border-radius: 0 0 0 32px;
    box-shadow: 0 0 32px rgba(30,144,255,0.18);
    z-index: 1000;
    opacity: 0.98;
    transition: right 0.3s, opacity 0.3s;
  }
  nav ul.active {
    right: 0;
    opacity: 1;
  }
  .hamburger {
    display: flex;
  }
  main {
    padding: 2rem 2vw;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .skills-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.7rem;
    justify-content: center;
    align-items: center;
  }
  .timeline {
    padding-left: 1rem;
  }
}

@media (max-width: 900px) {
  nav ul {
    position: fixed;
    top: 0;
    right: -100vw;
    width: 70vw;
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    gap: 2rem;
    padding: 4rem 2rem 2rem 2rem;
    border-radius: 0 0 0 32px;
    box-shadow: 0 0 32px rgba(30,144,255,0.18);
    z-index: 1000;
    opacity: 0.98;
    transition: right 0.3s, opacity 0.3s;
  }
  nav ul.active {
    right: 0;
    opacity: 1;
  }
  .hamburger {
    display: flex;
  }
  main {
    padding: 2rem 2vw;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .skills-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.7rem;
    justify-content: center;
    align-items: center;
  }
  .timeline {
    padding-left: 1rem;
  }
}

@media (max-width: 600px) {
  header {
    padding-bottom: 1rem;
  }
  .hero-content h1 {
    font-size: 2.1rem;
  }
  .hero-content h2 {
    font-size: 1.1rem;
  }
  .hero-img img {
    width: 140px;
    height: 140px;
  }
  section {
    margin-bottom: 2rem;
  }
  .contact-info-card, .contact form {
    padding: 1.2rem 1rem;
    border-radius: 16px;
  }
  .contact-row {
    font-size: 0.98rem;
    padding: 0.4rem 0.7rem;
  }
  .contact-icon {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 1rem;
  }
  nav ul {
    position: fixed;
    top: 0;
    right: -100vw;
    width: 70vw;
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    gap: 2rem;
    padding: 4rem 2rem 2rem 2rem;
    border-radius: 0 0 0 32px;
    box-shadow: 0 0 32px rgba(30,144,255,0.18);
    z-index: 1000;
    opacity: 0.98;
    transition: right 0.3s, opacity 0.3s;
  }
  nav ul.active {
    right: 0;
    opacity: 1;
  }
  .hamburger {
    display: flex;
  }
}