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

:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #141414;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  --border-color: #222222;
  --accent: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.1);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='4' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  animation: grain 8s steps(10) infinite;
}

@keyframes grain {
  0%,
  100% {
    transform: translate(0, 0);
  }
  10% {
    transform: translate(-5%, -10%);
  }
  20% {
    transform: translate(-15%, 5%);
  }
  30% {
    transform: translate(7%, -25%);
  }
  40% {
    transform: translate(-5%, 25%);
  }
  50% {
    transform: translate(-15%, 10%);
  }
  60% {
    transform: translate(15%, 0%);
  }
  70% {
    transform: translate(0%, 15%);
  }
  80% {
    transform: translate(3%, 35%);
  }
  90% {
    transform: translate(-10%, 10%);
  }
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: all 0.3s ease;
}

.logo-bracket {
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.logo:hover .logo-bracket {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link i {
  font-size: 1rem;
  transition: transform 0.3s ease;
}

.nav-link:hover i {
  transform: scale(1.2);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--text-primary);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100px 100px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
  pointer-events: none;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(100px, 100px);
  }
}

.hero-content {
  max-width: 900px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  margin-bottom: 2rem;
  animation: fadeInDown 0.8s ease;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -3px;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s ease backwards;
}

.title-line:nth-child(1) {
  animation-delay: 0.2s;
}

.title-line:nth-child(2) {
  animation-delay: 0.4s;
}

.title-highlight {
  background: linear-gradient(135deg, #ffffff 0%, #888888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-weight: 300;
  letter-spacing: 3px;
  text-transform: uppercase;
  animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.8s backwards;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 600px;
  margin: 0 auto 3rem;
  animation: fadeInUp 0.8s ease 1s backwards;
}

.stat-item {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
}

.stat-number {
  font-family: "JetBrains Mono", monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 1.2s backwards;
}

.btn-primary {
  padding: 1.2rem 2.5rem;
  background: var(--text-primary);
  color: var(--bg-primary);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: transparent;
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

.projects-section {
  padding: 8rem 2rem;
  background: var(--bg-secondary);
  position: relative;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -2px;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

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

.learning-section {
  padding: 8rem 2rem;
  background: var(--bg-primary);
}

.learning-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.learning-card {
  padding: 3rem 2rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.learning-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.learning-card:hover::before {
  transform: translateX(100%);
}

.learning-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-10px);
}

.learning-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  transition: all 0.4s ease;
}

.learning-card:hover .learning-icon {
  border-color: var(--text-primary);
  transform: rotateY(360deg);
}

.learning-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.learning-card p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 2rem;
  text-align: center;
}

.footer-content p {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.page-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 3rem;
  text-align: center;
  letter-spacing: -2px;
}

.about-hero,
.contact-hero {
  min-height: 100vh;
  padding: 8rem 2rem 4rem;
}

.about-content,
.contact-content {
  max-width: 1000px;
  margin: 0 auto;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 3rem;
  margin-bottom: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  animation: fadeInUp 0.8s ease;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.card-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.5px;
}

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

.card-text:last-child {
  margin-bottom: 0;
}

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

.feature-item {
  text-align: center;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  transition: all 0.4s ease;
}

.feature-item:hover .feature-icon {
  transform: scale(1.1);
}

.feature-item h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.social-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.social-link i {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

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

.social-link span {
  font-weight: 500;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.04);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

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

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

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 6rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  animation: fadeInUp 0.8s ease;
}

.empty-icon {
  font-size: 5rem;
  color: var(--text-tertiary);
  opacity: 0.5;
  animation: float 3s ease-in-out infinite;
}

.empty-icon i {
  display: block;
}

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

.empty-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.empty-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 500px;
  line-height: 1.7;
}

.btn-primary i {
  font-size: 1rem;
  transition: transform 0.3s ease;
}

.btn-primary:hover i {
  transform: translateX(5px);
}

.submit-hero {
  min-height: 100vh;
  padding: 8rem 2rem 4rem;
}

.submit-content {
  max-width: 900px;
  margin: 0 auto;
}

.submit-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.form-group select {
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.form-group select:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.04);
}

.form-group select option {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.checkbox-group {
  flex-direction: row;
  align-items: center;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.checkbox-label:hover {
  color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--text-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.submit-form .btn-primary {
  align-self: flex-start;
  margin-top: 1rem;
}