/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
  --bg-primary: #090909;
  --bg-secondary: #0d0d0d;
  --bg-card: #111111;
  --color-primary: #9333ea;
  --color-secondary: #a855f7;
  --color-accent: #c084fc;
  --color-text: #ffffff;
  --color-muted: #a1a1aa;
  --color-border: rgba(255, 255, 255, 0.06);
  --glass-bg: rgba(9, 9, 9, 0.7);
  --glass-blur: blur(16px);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ========================================
   Navbar
   ======================================== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 1.5rem;
  transition: transform 0.4s ease, background-color 0.3s ease;
}

nav.hidden {
  transform: translateY(-100%);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
}

.nav-logo {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-muted);
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  transition: color 0.3s ease, background-color 0.3s ease;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a.active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.hero-name {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-role {
  font-size: 1.3rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero-description {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 520px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  background: var(--color-primary);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.3);
}

.btn-primary:hover {
  background: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(147, 51, 234, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Terminal */
.terminal {
  margin-top: 3rem;
  background: var(--bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  text-align: left;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 0 40px rgba(147, 51, 234, 0.08);
  transition: box-shadow 0.5s ease;
}

.terminal:hover {
  box-shadow: 0 0 60px rgba(147, 51, 234, 0.15);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
}

.terminal-body {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
}

.terminal-body p {
  margin-bottom: 0.35rem;
}

.terminal-prompt {
  color: var(--color-primary);
  margin-right: 0.5rem;
}

.terminal-cursor {
  animation: blink 1s step-end infinite;
  color: var(--color-primary);
}

/* Hero Status */
.hero-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s 0.3s ease forwards;
  opacity: 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
  position: relative;
}

.status-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Hero Glow */
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ========================================
   Sections Common
   ======================================== */
section {
  padding: 6rem 1.5rem;
}

.section-container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-header {
  position: relative;
  margin-bottom: 3.5rem;
}

.ghost-number {
  position: absolute;
  top: -1.5rem;
  left: -0.5rem;
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 900;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06) 0%, transparent 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  pointer-events: none;
  user-select: none;
  line-height: 1;
}

.section-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  border-left: 3px solid var(--color-primary);
  padding-left: 1rem;
}

/* ========================================
   About Section
   ======================================== */
.about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: border-color 0.3s ease;
}

.stat-card:hover {
  border-color: rgba(147, 51, 234, 0.3);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.about-text p {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about-text strong {
  color: var(--color-text);
  font-weight: 600;
}

.about-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: rgba(147, 51, 234, 0.1);
  border: 1px solid rgba(147, 51, 234, 0.2);
  border-radius: 9999px;
  font-size: 0.8rem;
  color: var(--color-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
}

.skill-tag:hover {
  border-color: rgba(147, 51, 234, 0.5);
  color: var(--color-accent);
}

/* ========================================
   Skills Section
   ======================================== */
.skills {
  overflow: hidden;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.marquee-container {
  margin-top: 2rem;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.marquee-row {
  display: flex;
  margin-bottom: 1rem;
  overflow: hidden;
}

.marquee-content {
  display: flex;
  gap: 1rem;
  animation: scroll 25s linear infinite;
  flex-shrink: 0;
  padding-right: 1rem;
}

.marquee-row.reverse .marquee-content {
  animation-direction: reverse;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  white-space: nowrap;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.skill-item:hover {
  border-color: rgba(147, 51, 234, 0.4);
  color: var(--color-text);
  box-shadow: 0 0 15px rgba(147, 51, 234, 0.15);
}

.skill-item i {
  font-size: 24px;
  flex-shrink: 0;
}

.skill-icon-text {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  border-radius: 4px;
  font-size: 0.6rem;
  font-weight: 700;
  color: white;
}

/* ========================================
   Projects Section
   ======================================== */
.projects {
  background: var(--bg-secondary);
}

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

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.4s ease;
}

.project-card:hover {
  border-color: rgba(147, 51, 234, 0.3);
  box-shadow: 0 0 40px rgba(147, 51, 234, 0.1);
  transform: translateY(-4px);
}

.project-card-inner {
  padding: 2rem;
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

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

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.04);
  transition: all 0.3s ease;
}

.project-links a:hover {
  color: var(--color-text);
  background: rgba(147, 51, 234, 0.15);
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.project-description {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tech span {
  padding: 0.3rem 0.75rem;
  background: rgba(147, 51, 234, 0.08);
  border: 1px solid rgba(147, 51, 234, 0.15);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--color-secondary);
  font-weight: 500;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
  text-align: center;
}

.contact-content {
  max-width: 500px;
  margin: 0 auto;
}

.contact-heading {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.contact-text {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.btn-email {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: all 0.3s ease;
  text-align: left;
  margin-bottom: 2.5rem;
}

.btn-email:hover {
  border-color: rgba(147, 51, 234, 0.4);
  box-shadow: 0 0 30px rgba(147, 51, 234, 0.1);
  transform: translateY(-2px);
}

.btn-email svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.btn-email-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 0.15rem;
}

.btn-email-address {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.contact-socials {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--color-muted);
  transition: all 0.3s ease;
}

.social-link:hover {
  border-color: rgba(147, 51, 234, 0.3);
  color: var(--color-text);
  transform: translateY(-2px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer p {
  font-size: 0.85rem;
  color: var(--color-muted);
}

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

.footer-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--color-primary);
}

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

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

@keyframes ping {
  75%, 100% {
    transform: scale(2);
    opacity: 0;
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1rem;
    margin-top: 0.5rem;
    gap: 0.25rem;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    text-align: center;
    padding: 0.75rem 1rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-lang-toggle {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    justify-content: center;
    padding-top: 0.5rem;
    border-top: 1px solid var(--color-border);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-stats {
    flex-direction: row;
    justify-content: center;
  }

  .stat-card {
    flex: 1;
    padding: 1rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

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

  .footer-container {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  section {
    padding: 4rem 1.5rem;
  }

  .ghost-number {
    font-size: 3.5rem;
    top: -1rem;
  }
}

/* Language Toggle */
.nav-lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 0.5rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--color-border);
}

.lang-option {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  border-radius: 9999px;
  transition: color 0.3s ease, background-color 0.3s ease;
  letter-spacing: 0.02em;
}

.lang-option:hover {
  color: var(--color-text);
}

.lang-option.active {
  color: var(--color-primary);
  background: rgba(147, 51, 234, 0.1);
}

.lang-separator {
  font-size: 0.7rem;
  color: var(--color-border);
  user-select: none;
}

@media (max-width: 480px) {
  .about-stats {
    flex-direction: column;
  }

  .contact-socials {
    flex-direction: column;
    align-items: center;
  }

  .social-link {
    width: 100%;
    justify-content: center;
  }
}