:root {
  --primary: #0a192f;   
  --secondary: #ffffff;  
  --accent: #64b9ffff;    
  --text: #ccd6f6;       
  --dark-accent: #1e3a8a; 
  --light-bg: #f8fafc;  
  --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Montserrat', sans-serif;
  color: var(--text);
  line-height: 1.7;
  background-color: var(--primary);
  overflow-x: hidden;
  position: relative;
}

body.no-scroll {
  overflow: hidden;
}

.bg-circles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.circle-1, .circle-2, .circle-3 {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.1;
}

.circle-1 {
  width: 300px;
  height: 300px;
  background-color: var(--accent);
  top: 10%;
  left: 5%;
  animation: float 8s ease-in-out infinite;
}

.circle-2 {
  width: 400px;
  height: 400px;
  background-color: var(--dark-accent);
  bottom: 15%;
  right: 10%;
  animation: float 12s ease-in-out infinite;
}

.circle-3 {
  width: 200px;
  height: 200px;
  background-color: var(--secondary);
  top: 50%;
  left: 30%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  background: rgba(10, 25, 47, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: fixed;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(100, 255, 218, 0.1);
}

.header.scrolled {
  padding: 1rem 5%;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
}

.logo a {
  display: block;
  transition: var(--transition);
}

.logo a:hover {
  opacity: 0.8;
}

.nav {
  display: flex;
  align-items: center;
}

.nav ul {
  display: flex;
  list-style: none;
}

.nav ul li {
  margin-left: 2.5rem;
  position: relative;
}

.nav ul li a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  transition: var(--transition);
}

.nav ul li a:hover {
  color: var(--accent);
}

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

.nav ul li a:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.hero {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 5%;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: 1.5rem;
  line-height: 1.2;
  color: var(--secondary);
}

.hero-subtitle {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  color: var(--text);
}

.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  background-color: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.5px;
  transition: var(--transition);
  text-transform: uppercase;
  text-decoration: none;
}

.cta-button:hover {
  background-color: rgba(100, 255, 218, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(100, 255, 218, 0.1);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text);
  font-size: 0.8rem;
}

.mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text);
  border-radius: 12px;
  margin-top: 0.5rem;
  position: relative;
}

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

@keyframes scroll {
  0% { top: 4px; opacity: 1; }
  100% { top: 20px; opacity: 0; }
}

.section {
  padding: 6rem 10%;
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--light-bg);
}

.section:nth-child(even) h2,
.section:nth-child(even) p {
  color: var(--primary);
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: 3rem;
  text-align: center;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
  color: var(--secondary);
}

.section-title::after {
  content: '';
  position: absolute;
  width: 60%;
  height: 3px;
  bottom: -12px;
  left: 20%;
  background: var(--accent);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(10, 25, 47, 0.5);
  padding: 3rem;
  border-radius: 8px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(100, 255, 218, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.about-content p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  color: var(--text);
}

.skills {
  margin-top: 3rem;
}

.skills h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.skill-bars {
  margin-top: 1.5rem;
}

.skill {
  margin-bottom: 1.5rem;
}

.skill-name {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.skill-progress {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  width: 0;
  transition: width 1.5s ease;
}

.skill[data-skill="Graphic Design"] .skill-progress::after {
  width: 95%;
}

.skill[data-skill="Motion Graphics"] .skill-progress::after {
  width: 90%;
}

.skill[data-skill="UI/UX"] .skill-progress::after {
  width: 85%;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  margin: 3rem auto;
  max-width: 900px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(100, 255, 218, 0.2);
  transform: translateY(0);
  transition: var(--transition);
}

.video-container:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-description {
  max-width: 700px;
  margin: 2rem auto 0;
  font-size: 1.1rem;
  text-align: center;
  color: var(--text);
}

.portfolio-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--accent);
  color: var(--primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.portfolio-item {
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
  height: auto;
}

.portfolio-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(10, 25, 47, 0.9), transparent 60%);
  z-index: 1;
  opacity: 0;
  transition: var(--transition);
}

.portfolio-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.portfolio-item:hover::before {
  opacity: 1;
}

.portfolio-item img,
.portfolio-item video {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition);
  display: block;
}

.portfolio-item:hover img,
.portfolio-item:hover video {
  transform: scale(1.05);
}

.project-info {
  position: absolute;
  bottom: -50px;
  left: 0;
  right: 0;
  padding: 1.5rem;
  z-index: 2;
  transition: var(--transition);
  opacity: 0;
  text-align: center;
}

.portfolio-item:hover .project-info {
  bottom: 0;
  opacity: 1;
}

.project-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  margin-top: 0.5rem;
}

.project-link:hover {
  text-decoration: underline;
}

.contact-container {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

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

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(100, 255, 218, 0.3);
  border-radius: 4px;
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  color: var(--text);
  transition: var(--transition);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.2);
  background-color: rgba(255, 255, 255, 0.05);
}

.form-group label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--text);
  pointer-events: none;
  transition: var(--transition);
  opacity: 0.7;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: -0.5rem;
  left: 0.5rem;
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--primary);
  padding: 0 0.5rem;
  opacity: 1;
}

.submit-btn {
  align-self: flex-start;
  padding: 1rem 2.5rem;
  background-color: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.submit-btn:hover {
  background-color: rgba(100, 255, 218, 0.1);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(100, 255, 218, 0.1);
}

.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(100, 255, 218, 0.1);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1.2rem;
  transition: var(--transition);
  border: 1px solid rgba(100, 255, 218, 0.2);
  text-decoration: none;
  position: relative;
}

.social-link:hover {
  transform: translateY(-5px);
  background: rgba(100, 255, 218, 0.2);
  box-shadow: 0 8px 20px rgba(100, 255, 218, 0.1);
}

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--accent);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
  margin-bottom: 10px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  bottom: calc(100% + 5px);
}

.footer {
  text-align: center;
  padding: 3rem;
  background-color: rgba(10, 25, 47, 0.9);
  color: var(--text);
}

.footer p {
  font-size: 0.95rem;
  opacity: 0.8;
}

.footer span {
  color: var(--accent);
  font-weight: 600;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition);
}

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

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@media (max-width: 992px) {
  .section {
    padding: 5rem 8%;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .social-links {
    justify-content: center;
    margin-top: 2rem;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 1rem 5%;
  }
  
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(-100%);
    transition: var(--transition);
    z-index: 999;
  }
  
  .nav.active {
    transform: translateX(0);
  }
  
  .nav ul {
    flex-direction: column;
    align-items: center;
  }
  
  .nav ul li {
    margin: 1.5rem 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero {
    padding: 0 8%;
    text-align: center;
  }
  
  .about-content {
    padding: 2rem;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .section {
    padding: 4rem 6%;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}