:root {
  --primary-color: #0d0d0d;
  --accent-color: #ff0000;
  --text-color: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-hover-bg: rgba(255, 0, 0, 0.1);
  --gradient-start: #ff0000;
  --gradient-end: #ff6b6b;
  --navbar-height: 70px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  scroll-behavior: smooth;
}

body {
  color: var(--text-color);
  background: var(--primary-color);
  overflow-x: hidden;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: rgba(13, 13, 13, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: transform 0.3s ease;
  padding: 0 2rem;
  display: flex;
  align-items: center;
}

.navbar.scroll-down {
  transform: translateY(-100%);
}

.navbar.scroll-up {
  transform: translateY(0);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-img {
  width: 40px;
  height: 40px;
  transition: transform 0.3s ease;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-logo:hover .logo-img {
  transform: rotate(360deg);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  transition: opacity 0.5s ease-out;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid var(--text-color);
  border-radius: 50%;
  border-top-color: var(--accent-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
}

main {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(5rem + var(--navbar-height)) 2rem 5rem;
}

/* Header */
header {
  height: calc(100vh - var(--navbar-height));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.title {
  font-size: 4.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient 8s ease infinite;
  text-shadow: 0 0 30px rgba(255, 0, 0, 0.3);
}

.subtitle {
  font-size: 1.8rem;
  font-weight: 300;
  opacity: 0.9;
  letter-spacing: 1px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.mouse {
  width: 30px;
  height: 50px;
  border: 2px solid var(--text-color);
  border-radius: 15px;
  position: relative;
}

.mouse::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent-color);
  border-radius: 2px;
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% { transform: translate(-50%, 0); opacity: 1; }
  100% { transform: translate(-50%, 20px); opacity: 0; }
}

/* Section Titles */
h2 {
  font-size: 2.5rem;
  text-align: center;
  color: var(--accent-color);
  margin-bottom: 3rem;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 2px;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  border-radius: 2px;
}

/* About Section */
.about {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 8rem 0;
}

.about p {
  font-size: 1.2rem;
  line-height: 1.8;
  color: #ddd;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Skill & Hobby Grid */
.skill-grid,
.hobby-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  justify-content: center;
  padding: 0 2rem;
}

/* Card Styling */
.skill-card,
.hobby-item {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2),
              inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.skill-card::before,
.hobby-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: 0.5s;
}

.skill-card:hover::before,
.hobby-item:hover::before {
  left: 100%;
}

.skill-card:hover,
.hobby-item:hover {
  transform: translateY(-10px);
  background: var(--card-hover-bg);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3),
              inset 0 0 0 1px rgba(255, 0, 0, 0.2);
}

/* Skill Card Headers */
.skill-card h3 {
  font-size: 1.5rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.skill-card h3::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: right;
}

.skill-card:hover h3::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Skill List */
.skill-card ul {
  list-style: none;
  padding: 0;
}

.skill-card li {
  font-size: 1.1rem;
  margin: 12px 0;
  color: #ddd;
  transition: all 0.3s ease;
  position: relative;
  padding-left: 20px;
}

.skill-card li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-color);
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
}

.skill-card:hover li::before {
  opacity: 1;
  transform: translateX(0);
}

.skill-card:hover li {
  color: var(--text-color);
  transform: translateX(5px);
}

/* Hobby Items */
.hobby-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem;
}

.hobby-icon {
  font-size: 2.5rem;
  transition: all 0.3s ease;
  filter: drop-shadow(0 0 10px rgba(255, 0, 0, 0.3));
}

.hobby-item:hover .hobby-icon {
  transform: scale(1.2) rotate(5deg);
}

.hobby-text {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 1px;
  position: relative;
}

.hobby-text::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  transition: transform 0.3s ease;
}

.hobby-item:hover .hobby-text::after {
  transform: translateX(-50%) scaleX(1);
}

/* Footer */
footer {
  text-align: center;
  padding: 4rem 0;
  margin-top: 4rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.social-link {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.social-link:hover {
  transform: translateY(-5px);
  background: var(--card-hover-bg);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.social-link img {
  width: 22px;
  height: 22px;
  filter: invert(1);
  transition: transform 0.3s ease;
}

.social-link:hover img {
  transform: scale(1.2);
}

.credits {
  font-size: 1.1rem;
  color: #ddd;
  letter-spacing: 1px;
}

/* Animations */
.hidden {
  opacity: 0;
  filter: blur(5px);
  transform: translateY(100px);
  transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
  }

  .title {
    font-size: 3rem;
  }

  .subtitle {
    font-size: 1.4rem;
  }

  .skill-grid,
  .hobby-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about p {
    font-size: 1.1rem;
  }

  .skill-card,
  .hobby-item {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .title {
    font-size: 2.5rem;
  }

  .subtitle {
    font-size: 1.2rem;
  }

  main {
    padding: 3rem 1rem;
  }

  h2 {
    font-size: 2rem;
  }

  .skill-card h3 {
    font-size: 1.3rem;
  }

  .hobby-icon {
    font-size: 2rem;
  }
}

@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;
  }
}