* {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif, Arial;
  box-sizing: border-box;
}

:root {
  --primary: #7371FC;
  --background: #FCFFF7;
  --secondary: #21A0A0;
  --contrast: #046865;
  --white: #ffffff;
  --near-black: #111827;
  --border-color: rgba(115, 113, 252, 0.1);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--background);
  color: var(--near-black);
  line-height: 1.6;
}

/* Header Modern */
.header-modern {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(90deg, var(--primary) 60%, var(--contrast) 100%);
  box-shadow: 0 2px 15px rgba(115, 113, 252, 0.15);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo-link {
  text-decoration: none;
  transition: transform 0.3s ease;
}

.logo-link:hover {
  transform: translateY(-2px);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
  text-shadow: 1px 1px 4px rgba(4, 104, 101, 0.6);
  transition: all 0.3s ease;
}

.logo-link:hover .logo-text {
  letter-spacing: 2px;
}

.nav-desktop {
  display: none;
  gap: 32px;
  align-items: center;
}

.nav-item {
  color: var(--background);
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  position: relative;
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: width 0.3s ease;
  transform: translateX(-50%);
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.nav-item:hover::after,
.nav-item.active::after {
  width: 80%;
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.15);
}

.mobile-menu-btn {
  display: block;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--white);
  font-size: 1.5rem;
  padding: 8px;
}

.nav-mobile {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 20px;
  box-shadow: 0 10px 30px rgba(115, 113, 252, 0.2);
}

.nav-mobile-item {
  display: block;
  color: var(--white);
  text-decoration: none;
  padding: 14px 20px;
  margin-bottom: 8px;
  border-radius: 8px;
  transition: all 0.3s ease;
  font-weight: 600;
}

.nav-mobile-item:hover,
.nav-mobile-item.active {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(8px);
}

/* Main */
.about-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 24px;
}

.about-header {
  text-align: center;
  margin-bottom: 64px;
  animation: fadeInUp 0.8s ease-out;
}

.about-header h1 {
  font-size: 3.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  letter-spacing: -2px;
}

.about-intro {
  font-size: 1.3rem;
  color: var(--contrast);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

.brand-highlight {
  color: var(--primary);
  font-weight: 700;
}

.quick-contact {
  background: var(--white);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 48px;
  box-shadow: 0 10px 40px rgba(115, 113, 252, 0.12);
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.quick-contact h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.contact-item,
.contact-item-static {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(115, 113, 252, 0.05), rgba(33, 160, 160, 0.05));
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  font-weight: 600;
  color: var(--contrast);
}

.contact-item {
  text-decoration: none;
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(115, 113, 252, 0.15);
  border-color: var(--primary);
}

.contact-item i,
.contact-item-static i {
  font-size: 1.5rem;
  color: var(--primary);
}

.about-section {
  background: var(--white);
  border-radius: 20px;
  padding: 48px;
  margin-bottom: 40px;
  box-shadow: 0 10px 40px rgba(115, 113, 252, 0.12);
  transition: all 0.4s ease;
  animation: fadeInUp 0.8s ease-out both;
}

.about-section:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 50px rgba(115, 113, 252, 0.18);
}

.about-section h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 32px;
  letter-spacing: -1px;
  border-bottom: 3px solid var(--secondary);
  padding-bottom: 16px;
}

.about-section h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--contrast);
  margin-bottom: 12px;
}

.about-section p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--near-black);
  margin-bottom: 16px;
  opacity: 0.9;
}

.timeline-item {
  padding: 24px;
  border-left: 4px solid var(--primary);
  margin-bottom: 24px;
  background: linear-gradient(90deg, rgba(115, 113, 252, 0.03), transparent);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.timeline-item:hover {
  border-left-width: 6px;
  padding-left: 28px;
  background: linear-gradient(90deg, rgba(115, 113, 252, 0.08), transparent);
}

.timeline-primary {
  border-left-color: var(--primary);
}

.timeline-secondary {
  border-left-color: var(--secondary);
}

.timeline-subtitle {
  font-size: 1rem;
  color: var(--contrast);
  font-weight: 600;
  margin: 8px 0;
}

.timeline-period {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 700;
  margin: 8px 0;
}

.timeline-description {
  font-size: 1rem;
  color: var(--near-black);
  opacity: 0.85;
  margin-top: 12px;
  line-height: 1.6;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.skill-category h3 {
  color: var(--primary);
  margin-bottom: 20px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-tag {
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(115, 113, 252, 0.2);
}

.skill-tag:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 20px rgba(115, 113, 252, 0.35);
}

.cert-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cert-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(115, 113, 252, 0.05), rgba(33, 160, 160, 0.05));
  border-radius: 12px;
  text-decoration: none;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
}

.cert-item:hover {
  transform: translateX(8px);
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(115, 113, 252, 0.15);
}

.cert-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--contrast);
}

.cert-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--primary);
  font-weight: 600;
}

.cert-item i {
  transition: transform 0.3s ease;
}

.cert-item:hover i {
  transform: translateX(4px);
}

.achievements-box {
  background: linear-gradient(135deg, rgba(115, 113, 252, 0.05), rgba(33, 160, 160, 0.05));
  border-radius: 16px;
  padding: 32px;
  border: 2px solid var(--border-color);
}

.achievements-list {
  list-style: none;
  padding: 0;
}

.achievements-list li {
  padding: 14px 0 14px 40px;
  position: relative;
  font-size: 1.1rem;
  line-height: 1.7;
  border-bottom: 1px solid var(--border-color);
}

.achievements-list li:last-child {
  border-bottom: none;
}

.achievements-list li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.5rem;
}

.achievements-list li strong {
  color: var(--primary);
  font-weight: 700;
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion-item {
  border: 2px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.accordion-item:hover {
  border-color: var(--primary);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: linear-gradient(90deg, rgba(115, 113, 252, 0.05), transparent);
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--contrast);
  transition: all 0.3s ease;
}

.accordion-trigger:hover {
  background: linear-gradient(90deg, rgba(115, 113, 252, 0.1), transparent);
  color: var(--primary);
}

.accordion-icon {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.accordion-trigger.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}

.accordion-content.active {
  max-height: 500px;
  padding: 20px 24px;
}

.accordion-content p {
  line-height: 1.8;
  color: var(--near-black);
}

.accordion-content a {
  color: var(--secondary);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.accordion-content a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 48px;
  flex-wrap: wrap;
}

.cta-button {
  padding: 16px 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  text-decoration: none;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.4s ease;
  box-shadow: 0 4px 15px rgba(115, 113, 252, 0.3);
  border: 2px solid transparent;
}

.cta-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(115, 113, 252, 0.4);
}

.cta-button-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.cta-button-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-modern {
  background: linear-gradient(135deg, var(--contrast), var(--primary));
  color: var(--background);
  padding: 64px 0 24px;
  text-align: center;
  margin-top: 80px;
}

.footer-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-cta h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--background);
}

.footer-cta-text {
  font-size: 1.2rem;
  margin-bottom: 32px;
  opacity: 0.9;
}

.footer-legal {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(252, 255, 247, 0.2);
  opacity: 0.8;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
  .mobile-menu-btn {
    display: none;
  }
  .nav-mobile {
    display: none !important;
  }
}

@media (max-width: 767px) {
  .about-header h1 {
    font-size: 2.5rem;
  }
  .about-section {
    padding: 32px 24px;
  }
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .cta-buttons {
    flex-direction: column;
  }
}