:root {
  --primary: #2a7f7e;
  --primary-light: #39a2ad;
  --primary-dark: #1a5f5e;
  --text-dark: #1a1a1a;
  --text-medium: #4a4a4a;
  --text-light: #757575;
  --bg-main: #fafaf8;
  --bg-white: #ffffff;
  --border: #e5e5e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1100px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --radius: 8px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family:
    'Roboto',
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  color: var(--primary);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-medium);
}

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

a:hover {
  color: var(--primary-dark);
}

ul {
  list-style: none;
}

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

.hero {
  background: var(--bg-white);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border);
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.profile-image {
  text-align: center;
}

.profile-image img {
  width: 100%;
  max-width: 280px;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  border: 5px solid var(--bg-main);
  transition: var(--transition);
}

.profile-image img:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 24px rgba(42, 127, 126, 0.2);
}

.profile-info h1 {
  margin-bottom: var(--spacing-xs);
}

.name-first {
  color: var(--text-medium);
  font-weight: 400;
}

.name-last {
  color: var(--primary);
  font-weight: 700;
}

.tagline {
  font-size: 1.25rem;
  color: var(--text-light);
  font-weight: 400;
  margin-bottom: var(--spacing-md);
}

.bio {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.highlight {
  color: var(--primary);
  font-weight: 600;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--bg-main);
  color: var(--primary);
  font-size: 1.3rem;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary);
  color: var(--bg-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

section {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type {
  border-bottom: none;
}

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

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--primary);
  margin: var(--spacing-sm) auto 0;
}

.experience-list,
.education-list {
  max-width: 900px;
  margin: 0 auto;
}

.experience-item,
.education-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  padding: var(--spacing-md);
  margin-left: calc(-1 * var(--spacing-md));
  margin-right: calc(-1 * var(--spacing-md));
  border-radius: var(--radius);
}

.experience-item:hover,
.education-item:hover,
.experience-item:not(.collapsed),
.education-item:not(.collapsed) {
  background: rgba(42, 127, 126, 0.03);
}

.experience-item:hover,
.education-item:hover {
  transform: translateX(4px);
}

.experience-item:last-child,
.education-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.year-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: var(--bg-white);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  height: fit-content;
}

.experience-content h3,
.education-content h3 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.experience-content h3 a {
  color: var(--primary);
  font-weight: 600;
}

.toggle-details {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.25rem 0.5rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  margin-left: auto;
}

.toggle-details:hover {
  color: var(--primary-dark);
  transform: scale(1.1);
}

.toggle-details i {
  transition: transform 0.3s ease;
}

.experience-item.collapsed .toggle-details i {
  transform: rotate(-90deg);
}

.experience-details {
  max-height: 1000px;
  overflow: hidden;
  transition:
    max-height 0.4s ease,
    opacity 0.3s ease,
    margin 0.3s ease;
  opacity: 1;
}

.experience-item.collapsed .experience-details,
.education-item.collapsed .education-details {
  max-height: 0;
  opacity: 0;
  margin: 0;
}

.education-details {
  max-height: 1000px;
  overflow: hidden;
  transition:
    max-height 0.4s ease,
    opacity 0.3s ease,
    margin 0.3s ease;
  opacity: 1;
}

.education-item.collapsed .toggle-details i {
  transform: rotate(-90deg);
}

.education-content h3 a {
  color: var(--primary);
  font-weight: 600;
}

.position,
.degree {
  display: block;
  font-size: 1rem;
  color: var(--text-medium);
  font-weight: 400;
  margin-top: 0.25rem;
}

.company-description {
  font-size: 0.9rem;
  color: var(--text-light);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.experience-content ul,
.education-content ul {
  margin: var(--spacing-sm) 0;
}

.experience-content li {
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  position: relative;
  color: var(--text-medium);
  font-size: 0.95rem;
}

.experience-content li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.tech-stack {
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--text-light);
  font-family: 'Courier New', monospace;
  border-top: 1px dashed var(--border);
}

.education-details {
  font-size: 0.9rem;
  color: var(--text-medium);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.skill-category {
  background: var(--bg-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.skill-category:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.skill-category h3 {
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.skill-category i {
  font-size: 1.4rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: var(--bg-white);
  color: var(--text-medium);
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.skill-tag:hover {
  background: var(--primary);
  color: var(--bg-white);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.cv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  max-width: 700px;
  margin: 0 auto;
}

.cv-card {
  text-align: center;
}

.cv-card img {
  width: 100%;
  max-width: 220px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-sm);
  border: 2px solid var(--border);
  transition: var(--transition);
}

.cv-card:hover img {
  border-color: var(--primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.cv-card h3 {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.btn-download {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: var(--primary);
  color: var(--bg-white);
  border-radius: var(--radius);
  font-weight: 600;
  transition: var(--transition);
  font-size: 0.95rem;
}

.btn-download:hover {
  background: var(--primary-dark);
  color: var(--bg-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-download i {
  margin-right: var(--spacing-xs);
}

footer {
  background: var(--text-dark);
  color: var(--bg-white);
  padding: var(--spacing-lg) 0;
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-contact a {
  color: var(--bg-main);
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-contact a:hover {
  color: var(--primary-light);
}

.footer-contact i {
  font-size: 1.1rem;
}

.copyright {
  color: var(--text-light);
  font-size: 0.85rem;
  margin: 0;
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 2.5rem;
    --spacing-lg: 2rem;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    text-align: center;
  }

  .profile-image img {
    max-width: 220px;
  }

  .social-links {
    justify-content: center;
  }

  .experience-item,
  .education-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .year-badge {
    width: fit-content;
  }

  section {
    padding: var(--spacing-lg) 0;
  }

  .footer-contact {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

@media print {
  .social-links,
  .btn-download {
    display: none;
  }

  section {
    page-break-inside: avoid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

a:focus,
button:focus,
.btn-download:focus {
  outline: 3px solid var(--primary-light);
  outline-offset: 2px;
}

/* Sticky Nav */
.sticky-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transform: translateY(-100%);
  transition: var(--transition);
}

.sticky-nav.sticky {
  transform: translateY(0);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-links a {
  color: var(--text-medium);
  font-weight: 500;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

.nav-social {
  display: flex;
  gap: var(--spacing-sm);
}

.nav-social a {
  color: var(--text-medium);
  font-size: 1.1rem;
}

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

.nav-toggle:hover {
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition:
      opacity 0.4s ease,
      transform 0.3s ease;
  }

  .nav-toggle {
    display: block;
  }

  .sticky-nav.open .nav-menu {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    gap: var(--spacing-md);
    align-items: center;
    opacity: 1;
    transform: translateY(0);
    animation: slideDown 0.4s ease forwards;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-15px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .sticky-nav.open .nav-links {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
  }

  .sticky-nav.open .nav-social {
    gap: var(--spacing-md);
  }
}