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

:root {
  --bg-primary: #0b1a2e;
  --bg-secondary: #11243a;
  --bg-card: #152d48;
  --accent: #0077b6;
  --accent-hover: #0096d6;
  --accent-light: #00b4d8;
  --text-primary: #e8f4f8;
  --text-secondary: #90e0f0;
  --text-muted: #6b8ea8;
  --border: #1e3a5c;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color var(--transition);
}

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

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 26, 46, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-light) !important;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-light);
  transition: width var(--transition);
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 119, 182, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 700px;
  position: relative;
}

.hero-image-wrapper {
  width: 140px;
  height: 140px;
  margin: 0 auto 28px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
}

.hero-image {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--bg-primary);
}

.hero-name {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  letter-spacing: 1px;
}

.hero-contacts {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 36px;
}

.hero-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.hero-contact svg {
  flex-shrink: 0;
}

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

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 119, 182, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--accent-light);
  border: 2px solid var(--accent-light);
}

.btn-outline:hover {
  background: rgba(0, 180, 216, 0.1);
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding: 90px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 56px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  margin: 12px auto 0;
  border-radius: 3px;
}

.section-subtitle {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 40px 0 20px;
  text-align: center;
}

/* About */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-light), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 16px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-light);
  border: 3px solid var(--bg-primary);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-content:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 32px rgba(0, 119, 182, 0.15);
}

.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.timeline-company {
  font-size: 0.95rem;
  color: var(--accent-light);
  font-weight: 500;
}

.timeline-date {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 8px 0 12px;
  font-weight: 500;
}

.timeline-duties {
  list-style: none;
  padding: 0;
}

.timeline-duties li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  line-height: 1.5;
}

.timeline-duties li::before {
  content: '›';
  position: absolute;
  left: 4px;
  color: var(--accent-light);
  font-weight: 700;
  font-size: 1.1rem;
}

/* Education */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 8px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.edu-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 119, 182, 0.15);
}

.edu-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 119, 182, 0.15);
  color: var(--accent-light);
}

.edu-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.edu-institution {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.edu-note {
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 500;
}

/* Certs */
.certs-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

.cert-badge {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  background: rgba(0, 119, 182, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.25);
  color: var(--accent-light);
}

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

.lang-item {
  display: inline-block;
  padding: 8px 24px;
  border-radius: 20px;
  font-size: 0.95rem;
  font-weight: 500;
  background: rgba(0, 119, 182, 0.1);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* Stack */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.stack-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stack-category:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 119, 182, 0.12);
}

.stack-cat-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stack-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 500;
  background: rgba(0, 119, 182, 0.1);
  border: 1px solid rgba(0, 119, 182, 0.2);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.stack-tag:hover {
  background: rgba(0, 180, 216, 0.15);
  border-color: var(--accent-light);
  color: var(--text-primary);
}

/* Contact */
.contact-intro {
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

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

.btn-submit {
  align-self: flex-start;
}

.form-status {
  font-size: 0.9rem;
  min-height: 1.4em;
}

.form-status.success {
  color: #4ade80;
}

.form-status.error {
  color: #f87171;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: center;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.contact-info-item svg {
  flex-shrink: 0;
  color: var(--accent-light);
}

.contact-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Terminal */
.terminal-wrapper {
  max-width: 780px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0d1117;
  border: 1px solid #21262d;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
}

.terminal-bar {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  background: #161b22;
  border-bottom: 1px solid #21262d;
  gap: 10px;
}

.terminal-dots {
  display: flex;
  gap: 7px;
  flex-shrink: 0;
}

.terminal-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dots .dot.red { background: #ff5f56; }
.terminal-dots .dot.yellow { background: #ffbd2e; }
.terminal-dots .dot.green { background: #27c93f; }

.terminal-title {
  color: #8b949e;
  font-size: 0.78rem;
  font-family: inherit;
}

.terminal-screen {
  padding: 16px 20px;
  max-height: 420px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #30363d transparent;
}

.terminal-screen::-webkit-scrollbar {
  width: 6px;
}

.terminal-screen::-webkit-scrollbar-thumb {
  background: #30363d;
  border-radius: 3px;
}

.terminal-line {
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 2px;
  line-height: 1.5;
}

.terminal-line.welcome {
  color: #8b949e;
  margin-bottom: 8px;
}

.terminal-line .prompt {
  color: #00ff41;
  font-weight: 600;
}

.terminal-line .output {
  color: #e6edf3;
}

.terminal-line .output.green {
  color: #3fb950;
}

.terminal-line .output.cyan {
  color: #58a6ff;
}

.terminal-line .output.yellow {
  color: #d29922;
}

.terminal-line .output.red {
  color: #f85149;
}

.terminal-line .output.dim {
  color: #8b949e;
}

.terminal-line .highlight {
  color: #00ff41;
  font-weight: 600;
}

.terminal-input-line {
  display: flex;
  align-items: center;
  padding: 8px 20px 16px;
  gap: 8px;
  border-top: 1px solid #21262d;
}

.terminal-input-line .prompt {
  color: #00ff41;
  font-weight: 600;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #e6edf3;
  font-family: inherit;
  font-size: 0.85rem;
  caret-color: #00ff41;
}

.terminal-input::placeholder {
  color: #484f58;
  font-style: italic;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile Nav */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(11, 26, 46, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-name {
    font-size: 2.2rem;
  }

  .hero-title {
    font-size: 1.05rem;
  }

  .hero-contacts {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .timeline::before {
    left: 16px;
  }

  .timeline-item {
    padding-left: 48px;
  }

  .timeline-dot {
    left: 8px;
    width: 16px;
    height: 16px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.6rem;
    margin-bottom: 36px;
  }
}

@media (max-width: 480px) {
  .hero-image-wrapper {
    width: 110px;
    height: 110px;
  }

  .hero-name {
    font-size: 1.8rem;
  }

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

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