:root {
  color-scheme: light;
  --color-text: #333333;
  --color-muted: #485563;
  --color-primary: #019fb5;
  --color-primary-dark: #017d8f;
  --color-background: #f7f9fb;
  --color-card: #ffffff;
  --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.05);
  --radius-md: 8px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: linear-gradient(180deg, #f9fbfd 0%, #eef5f8 100%);
  min-height: 100vh;
}

a {
  color: #0077b6;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  transform: translateY(-150%);
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 4px;
  transition: transform 0.2s ease;
  z-index: 1100;
}

.skip-link:focus {
  transform: translateY(0);
}

header {
  position: fixed;
  inset: 0 0 auto 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 2px solid rgba(1, 159, 181, 0.18);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 6px 16px rgba(15, 52, 96, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  padding: 0;
  border: none;
  cursor: pointer;
}

.nav-logo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: block;
}

.nav-logo:hover,
.nav-logo:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(15, 52, 96, 0.12);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

nav li {
  font-size: 0.95rem;
  font-weight: 500;
}

nav a {
  color: inherit;
  position: relative;
  padding: 0.25rem 0;
}

nav a::after {
  content: '';
  position: absolute;
  inset: auto 0 -0.15rem 0;
  height: 2px;
  background-color: var(--color-primary);
  opacity: 0;
  transform: scaleX(0);
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform-origin: center;
}

nav a:hover::after,
nav a:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

main {
  display: block;
}

section {
  padding: 4rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
  scroll-margin-top: 6rem;
}

section h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  margin: 0 auto 1.75rem auto;
  color: #1b4965;
  text-align: center;
  display: block;
  width: fit-content;
  position: relative;
  padding-bottom: 0.6rem;
}

section h3::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 56px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(1, 159, 181, 0.75) 0%, rgba(127, 90, 240, 0.75) 100%);
  transform: translateX(-50%);
}

.hero {
  min-height: 100vh;
  background-color: #ffffff;
  background-image: url('assets/images/hero-background.jpg');
  background-image: image-set(
    url('assets/images/hero-background.webp') type('image/webp'),
    url('assets/images/hero-background.jpg') type('image/jpeg')
  );
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(2px);
}

.hero-content {
  position: relative;
  max-width: 720px;
  padding: 2rem;
}

.hero-content h1 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
  color: #1b4965;
}

.hero-content h2 {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 400;
  color: #5e6472;
  margin-bottom: 2rem;
}

.hero-content p {
  font-size: 1.05rem;
  color: #3d5060;
  max-width: 650px;
  margin: 0 auto 2rem;
}

.hero-content .cta {
  display: inline-block;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 500;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.hero-content .cta:hover,
.hero-content .cta:focus-visible {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.about,
.skills,
.projects,
.education,
.contact {
  background-color: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-md);
  border: 1px solid rgba(1, 159, 181, 0.08);
  box-shadow: 0 8px 20px rgba(15, 52, 96, 0.06);
  margin-bottom: 3rem;
  padding: 3rem;
}

.about p,
.skills ul,
.projects ul,
.education p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--color-muted);
}

.experience {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.experience-card {
  background-color: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid rgba(1, 159, 181, 0.08);
  box-shadow: 0 6px 18px rgba(15, 52, 96, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.experience-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(15, 52, 96, 0.1);
  border-color: rgba(1, 159, 181, 0.18);
}

.experience-card h4 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
  color: #1b4965;
}

.experience-card h5 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 0.8rem;
}

.experience-card ul {
  padding-left: 1.2rem;
  list-style-type: disc;
  color: var(--color-muted);
}

.experience-card li {
  margin-bottom: 0.5rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  padding: 1rem 0 2rem;
}

.skills-grid div {
  background-color: #f2f6fa;
  border-radius: 6px;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.skills-grid div p {
  margin: 0;
  color: var(--color-muted);
}

.skills-grid h6 {
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: #1b4965;
}

.projects ul {
  list-style: none;
  padding: 0;
}

.projects li {
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(1, 159, 181, 0.12);
}

.projects li:last-child {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 0;
}

.projects strong {
  color: #1b4965;
  font-weight: 600;
}

.education .degree {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #1b4965;
}

.education .institution {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.contact-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.contact-item {
  flex: 1 1 220px;
  min-width: 200px;
  max-width: 260px;
  text-align: center;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: 0 6px 18px rgba(15, 52, 96, 0.08);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(1, 159, 181, 0.12);
}

.contact-item h6 {
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: #1b4965;
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--color-muted);
}

body.is-portal-open {
  overflow: hidden;
}

.portal-overlay {
  position: fixed;
  inset: 0;
  background: #0b0c10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portal-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.portal-stars,
.portal-twinkling {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.portal-stars {
  background: #000 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300' viewBox='0 0 300 300'%3E%3Cg fill='%23ffffff' fill-opacity='0.6'%3E%3Ccircle cx='10' cy='10' r='1'/%3E%3Ccircle cx='50' cy='30' r='1'/%3E%3Ccircle cx='90' cy='70' r='1'/%3E%3Ccircle cx='130' cy='20' r='1'/%3E%3Ccircle cx='170' cy='90' r='1'/%3E%3Ccircle cx='210' cy='40' r='1'/%3E%3Ccircle cx='250' cy='80' r='1'/%3E%3Ccircle cx='290' cy='15' r='1'/%3E%3C/g%3E%3C/svg%3E") repeat;
  z-index: 1;
}

.portal-twinkling {
  background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cg fill='%23FFE81F' fill-opacity='0.3'%3E%3Ccircle cx='25' cy='25' r='2'/%3E%3Ccircle cx='125' cy='75' r='2'/%3E%3Ccircle cx='225' cy='125' r='2'/%3E%3Ccircle cx='325' cy='175' r='2'/%3E%3C/g%3E%3C/svg%3E") repeat;
  animation: move-twink-back 200s linear infinite;
  z-index: 2;
}

.portal-container {
  position: relative;
  z-index: 3;
  width: min(600px, 90vw);
  margin: 0 auto;
  padding: 20px;
  opacity: 0;
  transform: translateY(24px);
}

.portal-overlay.is-active .portal-container {
  animation: rise-in 1s ease forwards 0.4s;
}

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

.portal-card {
  background: linear-gradient(145deg, #1a1a1a, #2d2d2d);
  border: 2px solid #FFE81F;
  border-radius: 15px;
  padding: 60px 40px;
  box-shadow: 0 0 50px rgba(255, 232, 31, 0.4);
  backdrop-filter: blur(10px);
}

.portal-hologram {
  position: relative;
  margin-bottom: 40px;
}

.portal-hologram::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(139, 0, 0, 0.4) 0%, rgba(100, 0, 0, 0.2) 40%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
  animation: red-pulse 3s ease-in-out infinite alternate;
}

.portal-vader-image {
  width: min(250px, 60vw);
  height: auto;
  filter:
    drop-shadow(0 0 20px rgba(255, 232, 31, 0.6))
    drop-shadow(0 0 40px rgba(255, 232, 31, 0.4))
    drop-shadow(0 0 60px rgba(139, 0, 0, 0.4));
  animation: hologram-flicker 3s ease-in-out infinite;
  display: block;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.portal-welcome-message {
  font-size: clamp(1.6rem, 2.2vw + 1.2rem, 2.4rem);
  color: #FF6B6B;
  font-weight: 700;
  text-shadow: 0 0 6px #FF6B6B, 0 0 12px rgba(255, 107, 107, 0.4);
  letter-spacing: 2px;
  animation: dark-side-glow 2s ease-in-out infinite alternate;
}

.portal-return {
  margin-top: 1.8rem;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #FFE81F;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.portal-return:hover,
.portal-return:focus-visible {
  background: rgba(255, 255, 255, 0.28);
  color: #ffffff;
}

@keyframes move-twink-back {
  from {
    background-position: 0 0;
  }
  to {
    background-position: -10000px 5000px;
  }
}

@keyframes red-pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.6;
  }
  100% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.3;
  }
}

@keyframes hologram-flicker {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

@keyframes dark-side-glow {
  from {
    text-shadow: 0 0 8px #FF6B6B, 0 0 14px rgba(255, 107, 107, 0.5);
  }
  to {
    text-shadow: 0 0 12px #FF6B6B, 0 0 18px rgba(255, 107, 107, 0.45), 0 0 24px rgba(255, 107, 107, 0.35);
  }
}

@keyframes rise-in {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
footer {
  text-align: center;
  padding: 1rem 0 2rem;
  background: #f2f6fa;
  color: #7a8595;
  font-size: 0.85rem;
}

.portal-overlay {
  position: fixed;
  inset: 0;
  background: #0b0c10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
  z-index: 2000;
}

.portal-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 768px) {
  header {
    background-color: rgba(255, 255, 255, 0.98);
  }

  .nav-container {
    padding-inline: 1rem;
  }

  nav ul {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  section {
    padding: 3rem 1.5rem;
  }

  .about,
  .skills,
  .projects,
  .education,
  .contact {
    padding: 2.5rem 1.75rem;
  }

  .portal-card {
    padding: 40px 30px;
  }

  .portal-vader-image {
    width: min(180px, 50vw);
  }

  .portal-welcome-message {
    letter-spacing: 1px;
  }
}

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