:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --secondary: #ec4899;
  --accent: #14b8a6;
  --background: #0f0f1a;
  --surface: #1a1a2e;
  --surface-light: #252542;
  --surface-hover: #2d2d4a;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --glow-primary: rgba(99, 102, 241, 0.4);
  --glow-secondary: rgba(236, 72, 153, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

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

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width var(--transition-base);
}

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

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

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  background: var(--surface-light);
  border-color: var(--border-light);
  transform: rotate(15deg);
}

.theme-icon {
  font-size: 1.2rem;
}

.main {
  position: relative;
  z-index: 1;
}

.section {
  min-height: 100vh;
  padding: 6rem 3rem;
  display: flex;
  flex-direction: column;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.section-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 500;
  color: var(--primary);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-light), transparent);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: 8rem;
}

.hero-greeting {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.greeting-line {
  width: 40px;
  height: 2px;
  background: var(--primary);
}

.greeting-text {
  font-size: 1.1rem;
  color: var(--secondary);
  font-weight: 500;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.title-line {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
}

.title-name {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 50%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.subtitle-line {
  width: 30px;
  height: 2px;
  background: var(--border-light);
}

.typing-text {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.typing-text::after {
  content: '|';
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.cta-line {
  width: 60px;
  height: 2px;
  background: var(--border-light);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 20px var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--glow-primary);
}

.btn-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.btn:hover .btn-arrow {
  transform: translate(4px, -4px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--primary);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  position: relative;
  width: 380px;
  padding: 2rem;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-light) 100%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  overflow: hidden;
}

.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(from 0deg, transparent, var(--primary), transparent 30%);
  animation: rotate 8s linear infinite;
  opacity: 0.1;
}

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

.card-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.card-avatar {
  position: relative;
  width: 120px;
  height: 120px;
}

.avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 3px solid transparent;
  background: linear-gradient(135deg, var(--primary), var(--secondary)) border-box;
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.card-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--surface);
}

.card-stats {
  display: flex;
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.badge {
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--primary-light);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  animation: bounce 2s ease-in-out infinite;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid var(--border-light);
  border-radius: 13px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(8px); opacity: 0.3; }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

.about {
  background: var(--surface);
}

.about-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
}

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

.about-paragraph {
  display: flex;
  gap: 1rem;
  line-height: 1.8;
}

.paragraph-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.about-paragraph p {
  color: var(--text-secondary);
}

.about-paragraph strong {
  color: var(--text-primary);
}

.about-skills {
  margin-top: 1rem;
}

.about-skills h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-category {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.category-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  padding: 0.4rem 0.875rem;
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.about-timeline h3 {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--secondary), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
  padding-left: 1.5rem;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: 50%;
  transition: all var(--transition-base);
}

.timeline-item:hover .timeline-dot {
  background: var(--primary);
  box-shadow: 0 0 20px var(--glow-primary);
}

.timeline-content {
  transition: transform var(--transition-base);
}

.timeline-item:hover .timeline-content {
  transform: translateX(8px);
}

.timeline-date {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 500;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin: 0.5rem 0;
  color: var(--text-primary);
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.timeline-status {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--primary-light);
}

.timeline-status.highlight {
  background: rgba(236, 72, 153, 0.1);
  color: var(--secondary);
}

.projects {
  background: var(--background);
}

.projects-filter {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.625rem 1.25rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-btn:hover {
  background: var(--surface);
  border-color: var(--border-light);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.project-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.project-card.hidden {
  display: none;
}

.card-inner {
  display: flex;
  flex-direction: column;
}

.card-visual {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.card-bg-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
  opacity: 0.85;
}

.card-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.card-icon {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  font-size: 4rem;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.card-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card-tags {
  display: flex;
  gap: 0.5rem;
}

.card-tag {
  padding: 0.3rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.card-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.card-tech span {
  padding: 0.3rem 0.75rem;
  background: var(--surface-light);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--primary-light);
  font-family: 'JetBrains Mono', monospace;
}

.card-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary);
  border-radius: var(--radius-sm);
  color: white;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.card-link svg {
  width: 16px;
  height: 16px;
}

.card-link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.card-link.demo {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
}

.card-link.demo:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.contact {
  background: var(--surface);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-light);
  border-radius: var(--radius-md);
  font-size: 1.5rem;
}

.contact-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-text a,
.contact-text span:last-child {
  font-size: 1rem;
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-text a:hover {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-light);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.social-link svg {
  width: 22px;
  height: 22px;
}

.social-link:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-4px);
}

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

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: all var(--transition-base);
}

.form-group label {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.95rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: all var(--transition-base);
  background: var(--surface-light);
  padding: 0 0.5rem;
}

.form-group textarea ~ label {
  top: 1.25rem;
  transform: none;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  top: 0;
  transform: translateY(-50%);
  font-size: 0.8rem;
  color: var(--primary);
}

.form-group textarea ~ label {
  top: 0;
  transform: translateY(-50%);
}

.btn-submit {
  align-self: flex-start;
  padding: 1rem 2.5rem;
}

.music-player {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
}

.player-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 20px var(--glow-primary), 0 0 40px rgba(99, 102, 241, 0.2);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.player-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.player-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 30px var(--glow-primary), 0 0 60px rgba(236, 72, 153, 0.3);
}

.player-toggle:hover::before {
  opacity: 1;
}

.player-toggle > * {
  position: relative;
  z-index: 1;
}

.music-icon {
  width: 24px;
  height: 24px;
}

.now-playing {
  font-size: 0.9rem;
  font-weight: 600;
}

.player-panel {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 360px;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-light) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(99, 102, 241, 0.15);
  backdrop-filter: blur(20px);
}

.player-panel.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.player-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.player-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.player-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.player-animation {
  display: flex;
  gap: 3px;
  height: 16px;
  align-items: flex-end;
}

.player-animation span {
  width: 4px;
  background: linear-gradient(to top, var(--primary), var(--secondary));
  border-radius: 2px;
  animation: soundwave 0.5s ease-in-out infinite;
}

.player-animation span:nth-child(1) { height: 8px; animation-delay: 0s; }
.player-animation span:nth-child(2) { height: 12px; animation-delay: 0.1s; }
.player-animation span:nth-child(3) { height: 6px; animation-delay: 0.2s; }

@keyframes soundwave {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.5); }
}

.player-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  font-size: 1rem;
}

.player-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: rotate(90deg);
}

.player-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.album-cover {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto;
}

.cover-glow {
  position: absolute;
  inset: -15px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, rgba(236, 72, 153, 0.2) 50%, transparent 70%);
  border-radius: 50%;
  filter: blur(25px);
  opacity: 0.6;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.cover-inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-light) 100%);
  border-radius: 50%;
  font-size: 3.5rem;
  border: 4px solid var(--border);
  box-shadow: 
    inset 0 0 30px rgba(99, 102, 241, 0.1),
    0 10px 40px rgba(0, 0, 0, 0.3);
  z-index: 1;
  overflow: hidden;
}

.cover-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(99, 102, 241, 0.1) 50%, transparent 60%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.album-cover.playing .cover-inner {
  animation: spin 10s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.album-cover.playing .cover-glow {
  animation: pulse-glow 2s ease-in-out infinite, spin-glow 4s linear infinite;
}

@keyframes spin-glow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.track-info {
  text-align: center;
  position: relative;
}

.track-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.5px;
}

.track-artist {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.player-progress {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
}

.progress-bar {
  position: relative;
  height: 8px;
  background: var(--surface);
  border-radius: var(--radius-full);
  cursor: pointer;
  overflow: visible;
  transition: height var(--transition-fast);
}

.progress-bar:hover {
  height: 10px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.1s linear;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.progress-handle {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3), 0 0 20px rgba(99, 102, 241, 0.4);
}

.progress-bar:hover .progress-handle {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.2);
}

.progress-time {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.control-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 50%;
  transition: all var(--transition-fast);
  position: relative;
}

.control-btn::before {
  content: '';
  position: absolute;
  inset: -8px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.control-btn:hover::before {
  opacity: 1;
}

.control-btn svg {
  width: 26px;
  height: 26px;
  position: relative;
  z-index: 1;
}

.control-btn:hover {
  color: var(--text-primary);
  transform: scale(1.1);
}

.control-btn:active {
  transform: scale(0.95);
}

.play-btn {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  box-shadow: 
    0 4px 20px var(--glow-primary),
    0 0 40px rgba(99, 102, 241, 0.3);
}

.play-btn:hover {
  transform: scale(1.1);
  color: white;
  box-shadow: 
    0 6px 30px var(--glow-primary),
    0 0 60px rgba(236, 72, 153, 0.4);
}

.play-btn::before {
  display: none;
}

.play-btn .pause-icon {
  display: none;
}

.play-btn.playing .play-icon {
  display: none;
}

.play-btn.playing .pause-icon {
  display: block;
}

.play-btn.playing {
  animation: pulse-btn 2s ease-in-out infinite;
}

@keyframes pulse-btn {
  0%, 100% { box-shadow: 0 4px 20px var(--glow-primary), 0 0 40px rgba(99, 102, 241, 0.3); }
  50% { box-shadow: 0 4px 25px var(--glow-primary), 0 0 60px rgba(236, 72, 153, 0.5); }
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.volume-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.volume-control:hover .volume-icon {
  color: var(--primary);
}

.volume-control input[type="range"] {
  flex: 1;
  height: 6px;
  background: var(--surface);
  border-radius: var(--radius-full);
  appearance: none;
  cursor: pointer;
  transition: height var(--transition-fast);
}

.volume-control input[type="range"]:hover {
  height: 8px;
}

.volume-control input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 10px var(--glow-primary);
  transition: transform var(--transition-fast);
}

.volume-control input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.player-playlist {
  margin-top: 0.5rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.player-playlist.active {
  max-height: 200px;
  overflow-y: auto;
}

.playlist-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

.playlist-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.playlist-toggle {
  font-size: 0.75rem;
  color: var(--primary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.playlist-toggle:hover {
  color: var(--primary-light);
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-bottom: 0.25rem;
}

.playlist-item:hover {
  background: var(--surface);
}

.playlist-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
}

.playlist-item.active .playlist-item-title {
  color: var(--primary);
}

.playlist-item-index {
  width: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.playlist-item.active .playlist-item-index {
  color: var(--primary);
}

.playlist-item-title {
  flex: 1;
  font-size: 0.875rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-item-artist {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100px;
}

.player-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: status-pulse 1.5s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.player-panel.active .status-dot {
  animation-play-state: running;
}

.player-panel:not(.active) .status-dot {
  animation-play-state: paused;
}

#music-player-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.player-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-md), 0 0 20px var(--glow-primary);
  transition: all var(--transition-base);
}

.player-toggle-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px var(--glow-primary);
}

.player-toggle-btn .music-icon {
  width: 20px;
  height: 20px;
}

.player-expanded {
  position: absolute;
  bottom: 65px;
  right: 0;
  width: 320px;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-light) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.25);
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  pointer-events: none;
  transition: all var(--transition-base);
}

.player-expanded.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.player-mini-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.player-header-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
}

.player-header-controls {
  display: flex;
  gap: 0.5rem;
}

.player-min-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.player-min-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

.player-body {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  background: var(--surface);
}

.player-cover {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.cover-placeholder {
  font-size: 2rem;
}

.cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.player-info-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.player-track-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.player-track-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-track-artist {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.player-ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--surface-light);
  border: none;
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.player-ctrl-btn:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}

.player-ctrl-btn svg {
  width: 18px;
  height: 18px;
}

.player-ctrl-btn.active {
  color: var(--primary);
}

.player-ctrl-btn.active:hover {
  background: var(--primary);
  color: white;
}

.player-ctrl-btn .order-random-icon {
  color: var(--secondary);
}

.player-play-btn {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 15px var(--glow-primary);
}

.player-play-btn:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: 0 6px 20px var(--glow-primary);
}

.player-play-btn svg {
  width: 22px;
  height: 22px;
}

.player-progress-section {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.player-progress-bar {
  height: 4px;
  background: var(--surface-light);
  border-radius: var(--radius-full);
  overflow: hidden;
  cursor: pointer;
}

.player-progress-bar:hover {
  height: 6px;
}

.player-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.1s linear;
}

.player-time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.player-volume-section {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.player-volume-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.player-volume-btn:hover {
  color: var(--primary);
}

.player-volume-btn svg {
  width: 18px;
  height: 18px;
}

.player-volume-bar {
  flex: 1;
  height: 4px;
  background: var(--surface-light);
  border-radius: var(--radius-full);
  overflow: hidden;
  cursor: pointer;
  max-width: 80px;
}

.player-volume-bar:hover {
  height: 6px;
}

.player-volume-fill {
  height: 100%;
  width: 30%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.1s linear;
}

.player-playlist-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--surface-light);
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.player-playlist-toggle:hover {
  background: var(--surface-hover);
}

.player-playlist-toggle span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.player-playlist-toggle .toggle-arrow {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.player-playlist-toggle.active .toggle-arrow {
  transform: rotate(180deg);
}

.player-playlist-section {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.player-playlist-section.active {
  max-height: 200px;
  overflow-y: auto;
}

.playlist-loading {
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

.playlist-ul li {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.playlist-ul li:last-child {
  border-bottom: none;
}

.playlist-ul li:hover {
  background: var(--surface-hover);
}

.playlist-ul li.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
}

.playlist-ul li .song-name {
  display: block;
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-ul li .song-artist {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-ul li.active .song-name {
  color: var(--primary);
}

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

.footer {
  padding: 3rem;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-name {
  color: var(--primary);
  font-weight: 600;
}

.footer-credit {
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }

  .hero-greeting,
  .hero-subtitle,
  .hero-cta {
    justify-content: center;
  }

  .hero-title {
    align-items: center;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  #music-player-container {
    bottom: 1rem;
    right: 1rem;
  }

  .player-expanded {
    width: 300px;
    right: -20px;
  }

  .player-body {
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .player-cover {
    width: 70px;
    height: 70px;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 4rem 1.5rem;
  }

  .title-name {
    font-size: 2.5rem;
  }

  .hero-card {
    width: 100%;
    max-width: 340px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .player-expanded {
    width: calc(100vw - 2rem);
    right: -10px;
    bottom: 60px;
  }

  .player-body {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .player-cover {
    width: 100px;
    height: 100px;
  }

  .player-info-section {
    width: 100%;
  }

  .player-volume-section {
    justify-content: center;
  }

  .player-volume-bar {
    max-width: 120px;
  }
}