:root {
  --bg-color: #0a0a0f;
  --card-bg: #15151a;
  --text-main: #e4e4e7;
  --text-muted: #a1a1aa;
  --accent: #60a5fa;
  --accent-hover: #93c5fd;
  --accent-gradient: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  --border: #27272a;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --container-width: 1600px;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] {
  --bg-color: #ffffff;
  --card-bg: #f8f9fa;
  --text-main: #18181b;
  --text-muted: #52525b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --border: #e4e4e7;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* Intro Screen - Keep as is */
.intro-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg-color);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.intro-screen.active {
  opacity: 1;
}

.intro-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.intro-content {
  text-align: center;
  position: relative;
}

.intro-avatar-wrapper {
  position: relative;
  margin: 0 auto 40px;
  width: 200px;
  height: 200px;
  animation: avatarEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
  transform: scale(0.5) translateY(-50px);
}

.intro-screen.active .intro-avatar-wrapper {
  animation: avatarEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes avatarEntrance {
  0% {
    opacity: 0;
    transform: scale(0.5) translateY(-50px) rotate(-10deg);
  }
  60% {
    transform: scale(1.1) translateY(0) rotate(5deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0) rotate(0deg);
  }
}

.intro-avatar-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 220px;
  height: 220px;
  background: var(--accent-gradient);
  border-radius: 50%;
  opacity: 0.3;
  filter: blur(30px);
  animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.5;
  }
}

.intro-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent);
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 1;
  animation: avatarFloat 3s ease-in-out infinite;
}

@keyframes avatarFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-10px) rotate(2deg);
  }
}

.wave-hand {
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 3rem;
  animation: wave 1s ease-in-out infinite;
  z-index: 2;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

@keyframes wave {
  0%, 100% {
    transform: rotate(0deg) scale(1);
  }
  25% {
    transform: rotate(20deg) scale(1.1);
  }
  50% {
    transform: rotate(-10deg) scale(1.05);
  }
  75% {
    transform: rotate(15deg) scale(1.1);
  }
}

.intro-text {
  margin-top: 20px;
}

.intro-greeting {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: center;
  line-height: 1.2;
}

.greeting-word,
.greeting-name {
  display: inline-block;
  opacity: 1;
  transform: translateY(0);
}

.greeting-word {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.6em;
  margin-right: 4px;
}

.greeting-name {
  background: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
  font-size: 1.2em;
  animation: nameGlow 2s ease-in-out infinite;
  min-width: 0;
}

.typed-cursor-intro {
  display: inline-block;
  background: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 300;
  margin-left: 4px;
  animation: blinkCursor 1s infinite;
  opacity: 1;
  transition: opacity 0.3s ease;
}

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

@keyframes nameGlow {
  0%, 100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.2);
  }
}

/* Base Styles */
img {
  max-width: 100%;
  display: block;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  animation: fadeInDown 0.6s ease-out 3.8s forwards;
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.7);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  width: 100%;
}

@media (min-width: 769px) {
  .nav {
    justify-content: space-between;
  }
  
  .nav-right {
    margin-left: auto;
  }
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
  transition: color 0.2s ease;
}

.logo:hover {
  color: var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  position: relative;
  transition: color 0.2s ease;
  z-index: 1;
  pointer-events: auto;
  cursor: pointer;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

.nav-link.active {
  color: var(--accent);
  font-weight: 600;
}

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

.nav-link.active::after {
  width: 100%;
  background: var(--accent);
}

/* Main Layout - Two Column */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - 80px);
  margin-top: 80px;
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 4s forwards;
}

@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
    margin-top: 70px;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Left Sidebar - Hero */
.hero-sidebar {
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  padding: 32px 48px;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}

.hero-content {
  width: 100%;
  max-width: 600px;
  position: relative;
  z-index: 1;
}

/* Right Sidebar - Scrollable Content */
.content-sidebar {
  overflow-y: auto;
  height: calc(100vh - 80px);
  padding: 32px 48px;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  font-size: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  position: relative;
}

.theme-toggle:hover {
  color: var(--text-main);
  border-color: var(--accent);
  background: var(--card-bg);
}

#theme-icon {
  transition: transform 0.3s ease;
  display: inline-block;
  font-size: 1.2rem;
  line-height: 1;
}

.theme-toggle:hover #theme-icon {
  transform: rotate(15deg) scale(1.1);
}

[data-theme="light"] #theme-icon {
  filter: drop-shadow(0 0 4px rgba(251, 191, 36, 0.5));
}

[data-theme="dark"] #theme-icon {
  filter: drop-shadow(0 0 4px rgba(96, 165, 250, 0.5));
}

/* Hero content styles are now in .hero-sidebar */

.hero-badge {
  display: inline-block;
  padding: 4px 10px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -0.04em;
  color: var(--text-main);
  white-space: nowrap;
}

.typing-prefix-text {
  color: var(--text-main);
  font-size: 0.5em;
  white-space: nowrap;
}

.typing-text {
  color: var(--accent);
  display: inline-block;
  min-width: 500px;
  font-size: 0.5em;
  white-space: nowrap;
}

#typed {
  display: inline;
  white-space: nowrap;
}

.typed-cursor {
  color: var(--accent);
  animation: blink 1s infinite;
}

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

.hero-description {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
  max-width: 600px;
}

.hero-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.link-primary,
.link-secondary {
  font-weight: 500;
  font-size: 1rem;
  padding: 12px 0;
  position: relative;
  display: inline-block;
  align-items: center;
  gap: 8px;
  z-index: 1;
}

.link-primary {
  color: var(--accent);
}

.link-primary {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}

.link-primary:hover {
  text-decoration-thickness: 3px;
}

.link-secondary {
  color: var(--text-muted);
}

.link-secondary span {
  transition: transform 0.2s ease;
}

.link-secondary:hover {
  color: var(--text-main);
}

.link-secondary:hover span {
  transform: translateX(4px);
}

/* Work Section */
.work {
  margin-bottom: 48px;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
}

.section-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.work-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.work-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.work-item:hover {
  border-color: var(--accent);
  transform: translateX(2px);
}

.work-link {
  display: block;
  padding: 16px 20px;
  color: inherit;
}

.work-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.work-company {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.work-logo {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  object-fit: contain;
  background: white;
  padding: 3px;
  flex-shrink: 0;
}

.work-company h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
  color: var(--text-main);
}

.work-role {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

.work-location {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-top: 4px;
}

.work-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Skills Section */
.skills {
  margin-bottom: 48px;
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.skill-group {
  padding: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.skill-group:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.skill-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-tag {
  padding: 4px 10px;
  background: var(--bg-color);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-main);
  transition: all 0.2s ease;
  cursor: default;
}

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

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 4.2s forwards;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

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

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.social-links a:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }

  .hero-sidebar {
    position: relative;
    height: auto;
    min-height: auto;
    padding: 32px 24px;
    border-right: none;
    border-bottom: none;
  }

  .content-sidebar {
    height: auto;
    padding: 32px 24px;
  }

  .hero-sidebar {
    top: 70px;
    height: auto;
  }
}

@media (max-width: 768px) {
  .main-layout {
    margin-top: 70px;
  }

  .hero-sidebar {
    padding: 24px 20px;
    top: 70px;
    border-bottom: none;
  }

  .content-sidebar {
    padding: 24px 20px;
  }

  .work {
    padding-top: 0;
    margin-top: 0;
  }

  .work .section-header {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
  }

  .work::before {
    display: none;
  }

  .hero-links {
    flex-direction: column;
    gap: 16px;
  }

  .link-primary {
    display: block;
    width: 100%;
    padding: 12px 0;
    z-index: 2;
    position: relative;
  }

  .nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav-right {
    gap: 16px;
    flex-wrap: wrap;
  }

  .nav-link {
    font-size: 0.875rem;
    padding: 8px 0;
    z-index: 10;
    pointer-events: auto;
  }

  .theme-toggle {
    z-index: 10;
    pointer-events: auto;
  }

  .work-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .work-date {
    align-self: flex-end;
  }

  .skills-list {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .section-header {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }

  .nav {
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-right {
    gap: 12px;
    flex-wrap: wrap;
  }

  .nav-link {
    font-size: 0.8rem;
    padding: 6px 0;
    z-index: 10;
    pointer-events: auto;
  }

  .theme-toggle {
    z-index: 10;
    pointer-events: auto;
  }

  .link-primary {
    display: block;
    width: 100%;
    padding: 12px 0;
    z-index: 2;
    position: relative;
  }

  .hero-title {
    white-space: normal;
  }

  .typing-prefix-text {
    font-size: 0.45em;
    white-space: normal;
  }

  .typing-text {
    min-width: 200px;
    font-size: 0.45em;
    white-space: normal;
  }
}

/* Intro Screen Responsive */
@media (max-width: 768px) {
  .intro-avatar-wrapper {
    width: 150px;
    height: 150px;
    margin-bottom: 30px;
  }

  .intro-avatar {
    width: 150px;
    height: 150px;
  }

  .intro-avatar-glow {
    width: 170px;
    height: 170px;
  }

  .wave-hand {
    font-size: 2.5rem;
    top: -15px;
    right: -15px;
  }

  .intro-greeting {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
  }
}