/* ==========================================================================
   Design System & Custom Properties
   ========================================================================== */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-glass: rgba(18, 18, 26, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(167, 139, 250, 0.25);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-cyan: #06b6d4;
  --accent-lavender: #a78bfa;
  --accent-indigo: #6366f1;
  --accent-glow: rgba(167, 139, 250, 0.4);
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Layout */
  --header-height: 80px;
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  font-family: var(--font-sans);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-lavender);
}

/* ==========================================================================
   Background Animations & Effects
   ========================================================================== */
#ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

.ambient-glow {
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(167, 139, 250, 0.03) 50%, rgba(0, 0, 0, 0) 100%);
  z-index: -1;
  pointer-events: none;
  filter: blur(80px);
  animation: floatGlow 20s infinite alternate ease-in-out;
}

@keyframes floatGlow {
  0% { transform: translate(-40%, -40%) scale(1); }
  100% { transform: translate(-60%, -60%) scale(1.2); }
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4rem;
  z-index: 100;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.logo a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
}

.logo-svg {
  width: 24px;
  height: 24px;
  margin-right: 0.75rem;
  display: inline-block;
  vertical-align: middle;
  overflow: visible;
}

.logo-slash {
  transition: transform var(--transition-normal), filter var(--transition-normal);
  transform-origin: center;
}

.logo a:hover .slash-1,
.logo a:focus .slash-1 {
  transform: translate(-1.5px, 3px);
  filter: drop-shadow(0 0 5px var(--accent-lavender));
}

.logo a:hover .slash-2,
.logo a:focus .slash-2 {
  transform: translate(1.5px, -3px);
  filter: drop-shadow(0 0 5px var(--accent-cyan));
}

.logo-space {
  color: var(--text-secondary);
  font-weight: 300;
}

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

.nav-item {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-item:hover, .nav-item.active {
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(167, 139, 250, 0.4);
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-lavender), var(--accent-cyan), var(--accent-indigo), var(--accent-lavender));
  background-size: 300% 100%;
  animation: gradientFlow 6s linear infinite;
  transition: var(--transition-normal);
}

.nav-item.active::after {
  width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle .bar {
  height: 2px;
  width: 100%;
  background-color: var(--text-primary);
  transition: var(--transition-normal);
}

/* ==========================================================================
   Common Components & Utilities
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-lavender);
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.2);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 0 15px rgba(167, 139, 250, 0.03);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-lavender), var(--accent-indigo), var(--accent-cyan), var(--accent-lavender));
  background-size: 300% 300%;
  animation: gradientFlow 8s ease infinite;
  color: #fff;
  border: none;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(167, 139, 250, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

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

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   Layout & Sections
   ========================================================================== */
.content-container {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--header-height) + 2rem) 2rem 4rem 2rem;
  position: relative;
}

/* Section State Management */
.view-section {
  display: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.view-section.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: sectionEntrance 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

/* ==========================================================================
   1. Home Section
   ========================================================================== */
.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: calc(100vh - var(--header-height) - 8rem);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-lavender), var(--accent-cyan), var(--text-primary));
  background-size: 300% 300%;
  animation: gradientFlow 10s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  color: var(--text-secondary);
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.visual-wrapper {
  position: relative;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 
              0 0 40px rgba(167, 139, 250, 0.05);
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.visual-wrapper:hover .hero-img {
  transform: scale(1.05);
}

.visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.6) 0%, rgba(0, 0, 0, 0) 100%);
  pointer-events: none;
}

/* ==========================================================================
   2. Projects Section
   ========================================================================== */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.filter-btn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1.5rem;
  border-radius: 100px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition-normal);
}

.filter-btn:hover, .filter-btn.active {
  color: var(--text-primary);
  border-color: var(--accent-lavender);
  background: rgba(167, 139, 250, 0.05);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

/* Glassmorphic Project Card */
.project-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  transition: var(--transition-normal);
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-indigo), var(--accent-lavender));
  opacity: 0;
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3), 
              0 0 30px rgba(167, 139, 250, 0.05);
}

.project-card:hover::before {
  opacity: 1;
}

.project-status {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.project-status.active {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.08);
  border-color: rgba(6, 182, 212, 0.2);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 300;
  margin-bottom: 2rem;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.project-link {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--accent-lavender);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.project-link:hover {
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(167, 139, 250, 0.4);
}

/* ==========================================================================
   3. Blog Section
   ========================================================================== */
.blog-layout {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-top: 1rem;
}

.blog-search-bar {
  display: flex;
  justify-content: center;
  width: 100%;
}

.blog-search-bar input {
  width: 100%;
  max-width: 500px;
  background: var(--bg-glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition-normal);
}

.blog-search-bar input:focus {
  outline: none;
  border-color: var(--accent-lavender);
  box-shadow: 0 0 20px rgba(167, 139, 250, 0.1);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
}

.blog-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  cursor: pointer;
  transition: var(--transition-normal);
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.blog-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.blog-excerpt {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 2rem;
  flex: 1;
}

.blog-readmore {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-lavender);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   4. About & Contact Section
   ========================================================================== */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-info {
  display: flex;
  flex-direction: column;
}

.about-bio p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.skills-showcase {
  margin-top: 2rem;
}

.skills-showcase h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.skill-tag {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 400;
  transition: var(--transition-fast);
}

.skill-tag:hover {
  background: rgba(167, 139, 250, 0.08);
  border-color: var(--accent-lavender);
  color: var(--accent-lavender);
}

/* Contact Card Form */
.contact-card-wrapper {
  position: relative;
}

.contact-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

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

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

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-family: var(--font-sans);
}

.form-group input, .form-group textarea {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.2rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-normal);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--accent-lavender);
  box-shadow: 0 0 15px rgba(167, 139, 250, 0.1);
}

.form-status {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: center;
  min-height: 20px;
}

.form-status.success { color: var(--accent-cyan); }
.form-status.error { color: #f87171; }

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.social-link {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.social-link:hover {
  color: var(--text-primary);
  background: rgba(167, 139, 250, 0.08);
  border-color: var(--accent-lavender);
  box-shadow: 0 0 15px rgba(167, 139, 250, 0.2);
  transform: translateY(-3px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.main-footer {
  width: 100%;
  padding: 2rem 4rem;
  border-top: 1px solid var(--border-color);
  background: rgba(10, 10, 15, 0.5);
  margin-top: auto;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulseIndicator 2s infinite alternate ease-in-out;
}

@keyframes pulseIndicator {
  0% { opacity: 0.4; }
  100% { opacity: 1; }
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
    padding-top: 2rem;
  }
  
  .hero-content {
    align-items: center;
  }
  
  .hero-description {
    margin: 0 auto 2rem auto;
  }
  
  .about-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .main-header {
    padding: 0 2rem;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2.2rem;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    align-items: center;
    z-index: 99;
  }
  
  .nav-links.mobile-active {
    display: flex;
  }
  
  .main-footer {
    padding: 2rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .projects-grid, .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-card {
    padding: 2rem;
  }
}