/* ==========================================================================
   CSS DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
  /* Color Palette (Harmonious Modern Dark Mode by Default) */
  --bg-primary: #08090d;
  --bg-secondary: #11141e;
  --bg-tertiary: #181d2c;
  
  --accent-android: #3ddc84;     /* Android Green */
  --accent-compose: #8a2be2;     /* Compose Violet */
  --accent-teal: #00e5ff;        /* Neon Teal */
  --accent-blue: #3b82f6;        /* Neon Blue */
  
  --text-primary: #f5f6f9;
  --text-secondary: #9aa5b5;
  --text-dim: #5c687a;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.15);
  
  --glass-bg: rgba(17, 20, 30, 0.45);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: 16px;
  
  /* Navbar Background (Opacity backed by solid hex representation) */
  --bg-navbar: rgba(8, 9, 13, 0.85);
  
  --glow-green: 0 0 20px rgba(61, 220, 132, 0.25);
  --glow-purple: 0 0 20px rgba(138, 43, 226, 0.25);
  --glow-teal: 0 0 20px rgba(0, 229, 255, 0.25);
  --glow-blue: 0 0 20px rgba(59, 130, 246, 0.25);
  
  /* Fonts */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
}

/* ==========================================================================
   LIGHT MODE THEMING (variable overrides)
   ========================================================================== */
body.light-theme {
  --bg-primary: #f4f6fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecf3;
  
  /* Optimized accents for readability on light backgrounds */
  --accent-android: #168243;     /* Darker Android Green - optimized for contrast */
  --accent-compose: #6f17c7;     /* Darker Compose Violet */
  --accent-teal: #006875;        /* Darker Teal - optimized for contrast */
  --accent-blue: #1d4ed8;        /* Darker Blue */
  
  --text-primary: #12151c;       /* Deep Charcoal */
  --text-secondary: #495057;     /* Mid slate */
  --text-dim: #555e6b;           /* Muted grey - optimized for contrast */
  
  --border-color: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(0, 135, 153, 0.1);
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.06);
  
  /* Scrolled Navbar Background (Light theme representation) */
  --bg-navbar: rgba(244, 246, 250, 0.85);
  
  --glow-green: 0 0 20px rgba(27, 158, 82, 0.15);
  --glow-purple: 0 0 20px rgba(111, 23, 199, 0.15);
  --glow-teal: 0 0 20px rgba(0, 135, 153, 0.15);
  --glow-blue: 0 0 20px rgba(29, 78, 216, 0.15);
}

/* ==========================================================================
   GLOBAL STYLES & RESET
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  overflow-x: hidden;
  max-width: 100%;
}

body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Inline SVG icon styles (instantly loading & highly scalable) */
.icon-svg {
  width: 24px !important;
  height: 24px !important;
  min-width: 24px !important;
  min-height: 24px !important;
  flex-shrink: 0; /* Prevent flex squishing/stretching */
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  vertical-align: middle;
  transition: var(--transition-fast);
}

.channel-arrow {
  width: 20px !important;
  height: 20px !important;
  min-width: 20px !important;
  min-height: 20px !important;
  flex-shrink: 0; /* Prevent flex squishing/stretching */
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  display: inline-block;
  transition: var(--transition-fast);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
}

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

/* Common Layouts */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-teal), var(--accent-android) 50%, var(--accent-compose));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   SCROLL-DRIVEN ANIMATIONS (NATIVE SUPPORT)
   ========================================================================== */
/* Scroll Progress Bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-android), var(--accent-compose));
  z-index: 1000;
  transform-origin: 0% 50%;
  transform: scaleX(0);
}

@supports (animation-timeline: scroll()) {
  .scroll-progress {
    animation: grow-progress auto linear;
    animation-timeline: scroll(block root);
  }
}

@keyframes grow-progress {
  to { transform: scaleX(1); }
}

/* Section Reveal on Scroll (Universal High-Performance Trigger-Based Transition) */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(35px) scale(0.975);
  transition: 
    opacity 0.95s cubic-bezier(0.16, 1, 0.3, 1), 
    transform 0.95s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

.reveal-on-scroll.active {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 900;
  background: var(--bg-navbar);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
}

/* Initial styling: Transparent, thick */
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.05em;
  display: flex;
  align-items: center;
  color: var(--text-primary);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-android);
  transition: var(--transition-fast);
}

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

.nav-contact-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  color: var(--text-primary) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.nav-contact-btn::after {
  display: none;
}

.nav-contact-btn:hover {
  border-color: var(--accent-android);
  background: rgba(61, 220, 132, 0.05);
  box-shadow: var(--glow-green);
}

/* Navbar Actions (Toggle & Mobile Hamburger) */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Light / Dark Mode Toggle button */
.theme-toggle-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  display: block;
}

.theme-toggle-btn:hover {
  transform: rotate(30deg) scale(1.05);
  border-color: var(--accent-teal);
  box-shadow: var(--glow-teal);
}

/* Icon Switching Logic */
.theme-toggle-btn .light-icon {
  display: block;
}
.theme-toggle-btn .dark-icon {
  display: none;
}

body.light-theme .theme-toggle-btn .light-icon {
  display: none;
}
body.light-theme .theme-toggle-btn .dark-icon {
  display: block;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

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



/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 60px;
  overflow: hidden;
}

.hero-background-glow {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(61,220,132,0.08) 0%, rgba(138,43,226,0.08) 40%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

body.light-theme .hero-background-glow {
  background: radial-gradient(circle, rgba(27,158,82,0.05) 0%, rgba(111,23,199,0.04) 40%, transparent 70%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 4rem;
  z-index: 1;
  position: relative;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.02);
}

body.light-theme .badge {
  background: rgba(0, 0, 0, 0.02);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-android);
  box-shadow: var(--glow-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.5; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.5; }
}

.hero-text-content h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

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

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.9rem 2.2rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--text-primary);
  opacity: 0.9;
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15);
}

body.light-theme .btn-primary:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   GLOWING ANDROID ROBOT SVG SHOWCASE (No mockups)
   ========================================================================== */
.hero-logo-container {
  position: relative;
  height: 440px;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.android-logo-wrapper {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  animation: floatRobot 6s ease-in-out infinite;
}

.android-robot-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 15px 35px rgba(61, 220, 132, 0.15));
  transition: var(--transition-smooth);
}

body.light-theme .android-robot-svg {
  filter: drop-shadow(0 15px 35px rgba(27, 158, 82, 0.1));
}

.android-robot-svg:hover {
  transform: scale(1.04) rotate(2deg);
}

/* Theme sensitive eyes color matching background */
.android-eye {
  transition: fill 0.4s ease;
}

/* Ambient glowing halo in background */
.logo-background-halo {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.06) 0%, rgba(61, 220, 132, 0.04) 50%, transparent 70%);
  filter: blur(40px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  pointer-events: none;
  animation: pulseHalo 4s ease-in-out infinite;
}

body.light-theme .logo-background-halo {
  background: radial-gradient(circle, rgba(0, 135, 153, 0.03) 0%, rgba(27, 158, 82, 0.02) 50%, transparent 70%);
}

@keyframes floatRobot {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-16px); }
  100% { transform: translateY(0px); }
}

@keyframes pulseHalo {
  0% { transform: translate(-50%, -50%) scale(0.96); opacity: 0.8; }
  50% { transform: translate(-50%, -50%) scale(1.04); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(0.96); opacity: 0.8; }
}

/* ==========================================================================
   ABOUT & PHOTO COLUMN SECTION
   ========================================================================== */
.about-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, #0c0e15 100%);
  border-top: 1px solid var(--border-color);
  overflow: hidden;
}

body.light-theme .about-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, #f1f3f7 100%);
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-android);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Bio & Photo grid layout */
.about-bio-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 5rem;
  align-items: center;
  margin-bottom: 5rem;
}

.about-photo-column {
  display: flex;
  justify-content: center;
}

.about-photo-wrapper {
  position: relative;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1;
  overflow: visible;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: var(--transition-smooth);
  animation: floatSplash 6s ease-in-out infinite;
}

.about-photo-wrapper::before {
  content: '';
  position: absolute;
  top: -15%;
  left: -15%;
  width: 130%;
  height: 130%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.18) 0%, rgba(61, 220, 132, 0.18) 45%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  filter: blur(25px);
  animation: rotateSplash 20s linear infinite;
}

body.light-theme .about-photo-wrapper::before {
  background: radial-gradient(circle, rgba(0, 135, 153, 0.12) 0%, rgba(27, 158, 82, 0.12) 45%, transparent 70%);
}

.about-photo-wrapper:hover {
  transform: scale(1.04) rotate(1deg);
}

.about-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  transition: var(--transition-smooth);
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.55)) drop-shadow(0 5px 15px rgba(0, 229, 255, 0.2));
  border-radius: 50%;
}

body.light-theme .about-photo {
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.12)) drop-shadow(0 5px 15px rgba(22, 130, 67, 0.18));
}

.about-photo-wrapper:hover .about-photo {
  transform: scale(1.02);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.65)) drop-shadow(0 8px 25px rgba(0, 229, 255, 0.45));
}

body.light-theme .about-photo-wrapper:hover .about-photo {
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.18)) drop-shadow(0 8px 25px rgba(22, 130, 67, 0.35));
}

@keyframes floatSplash {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(0.8deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

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

/* Beautiful initial-based fallback image block */
.avatar-fallback {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--accent-compose) 0%, var(--accent-teal) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: inherit;
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.3);
}

/* Fallback Initials - ALWAYS white for contrast over dark purple-teal gradient */
.avatar-fallback span {
  font-family: var(--font-sans);
  font-size: 5rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.05em;
  text-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
  animation: float 4s ease-in-out infinite;
}

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

.about-profile h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.about-profile p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

/* Skills cards container below Bio */
.about-skills-section {
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  padding-top: 4rem;
  margin-top: 2rem;
}

body.light-theme .about-skills-section {
  border-top-color: rgba(0, 0, 0, 0.08);
}

.about-skills-section h3 {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  text-align: left;
  color: var(--text-primary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Skill Card */
.skill-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 1.75rem;
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
  transition: var(--transition-smooth);
}

body.light-theme .skill-card {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

body.light-theme .skill-card:hover {
  border-color: rgba(0,0,0,0.06);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.skill-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  background: var(--bg-tertiary);
}

.skill-icon-wrapper span {
  font-size: 1.35rem;
}

.purple-glow span { color: var(--accent-compose); }
.green-glow span { color: var(--accent-android); }
.teal-glow span { color: var(--accent-teal); }
.blue-glow span { color: var(--accent-blue); }

.skill-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.skill-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   ARCHITECTURE GRID BREAKDOWN SECTION
   ========================================================================== */
.arch-section {
  padding: 100px 0;
  background: #0c0e15;
  border-top: 1px solid var(--border-color);
}

body.light-theme .arch-section {
  background: #f1f3f7;
  border-top-color: var(--border-color);
}

.architecture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2rem;
}

.arch-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

body.light-theme .arch-card {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.arch-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.35),
    0 0 30px rgba(0, 229, 255, 0.01);
}

body.light-theme .arch-card:hover {
  border-color: rgba(0,0,0,0.06);
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.08),
    0 0 30px rgba(0, 135, 153, 0.01);
}

.arch-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.arch-layer-badge {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.8rem;
  border-radius: 50px;
  border: 1px solid transparent;
}

.purple-badge {
  background: rgba(138, 43, 226, 0.08);
  border-color: rgba(138, 43, 226, 0.2);
  color: var(--accent-compose);
}

.teal-badge {
  background: rgba(0, 229, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.2);
  color: var(--accent-teal);
}

.green-badge {
  background: rgba(61, 220, 132, 0.08);
  border-color: rgba(61, 220, 132, 0.2);
  color: var(--accent-android);
}

body.light-theme .purple-badge {
  background: rgba(111, 23, 199, 0.06);
  border-color: rgba(111, 23, 199, 0.15);
}
body.light-theme .teal-badge {
  background: rgba(0, 135, 153, 0.06);
  border-color: rgba(0, 135, 153, 0.15);
}
body.light-theme .green-badge {
  background: rgba(27, 158, 82, 0.06);
  border-color: rgba(27, 158, 82, 0.15);
}

.arch-card h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
}

.arch-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
  flex: 1;
}

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

.arch-tech .chip {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary); /* Explicit color variables for high contrast */
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ==========================================================================
   PROJECTS GRID (5 cards layout)
   ========================================================================== */
.projects-section {
  padding: 100px 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}

.projects-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2.5rem;
}

.project-card {
  width: calc(33.333% - 1.67rem);
  min-width: 290px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.02);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

body.light-theme .project-card {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255,255,255,0.12);
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.3),
    0 0 30px rgba(61, 220, 132, 0.02);
}

body.light-theme .project-card:hover {
  border-color: rgba(0,0,0,0.06);
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.08),
    0 0 30px rgba(27, 158, 82, 0.01);
}

.project-image-wrapper {
  position: relative;
  aspect-ratio: 16 / 13;
  overflow: hidden;
  background: #090a0f;
  border-bottom: 1px solid var(--border-color);
}

body.light-theme .project-image-wrapper {
  background: #edf2f7;
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.project-card:hover .project-image {
  transform: scale(1.03);
}

.project-info {
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.project-tag-chip {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffb703;
}

.project-rating span {
  font-size: 1rem;
}

.project-info h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.project-title-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.project-title-link:hover {
  color: var(--accent-android);
}

.project-title-link span {
  font-size: 1.15rem;
  transition: transform 0.2s ease;
}

.project-title-link:hover span {
  transform: translate(2px, -2px);
}

.project-image-link {
  display: block;
  width: 100%;
  height: 100%;
}

.project-info p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.75rem;
  flex: 1;
}

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

.project-tech .chip {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary); /* High contrast light mode chip text */
  font-size: 0.72rem;
  padding: 0.3rem 0.7rem;
}

body.light-theme .project-tech .chip {
  background: rgba(0, 0, 0, 0.02);
  border-color: rgba(0, 0, 0, 0.04);
}

/* ==========================================================================
   WORK EXPERIENCE TIMELINE
   ========================================================================== */
.exp-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, #0b0c10 100%);
  border-top: 1px solid var(--border-color);
}

body.light-theme .exp-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, #f1f3f7 100%);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  --timeline-padding: 3rem;
  --timeline-line-left: 16px;
  padding-left: var(--timeline-padding);
}

.timeline-item {
  position: relative;
  margin-bottom: 4rem;
}

/* Connecting timeline lines that reveal dynamically with each item as you scroll */
.timeline-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 10px; /* Center of current dot */
  left: calc(-1 * var(--timeline-padding) + var(--timeline-line-left) + 1px);
  width: 2px;
  height: calc(100% + 4rem); /* Connects to the next dot */
  z-index: 1; /* Under the dots (which are z-index: 5) */
  pointer-events: none;
  background: var(--line-gradient);
  filter: drop-shadow(0 0 3px rgba(0, 229, 255, 0.25));
  transition: var(--transition-smooth);
}

.timeline-item:nth-child(1)::after {
  --line-gradient: linear-gradient(to bottom, var(--accent-teal) 0%, var(--accent-android) 100%);
}

.timeline-item:nth-child(2)::after {
  --line-gradient: linear-gradient(to bottom, var(--accent-android) 0%, var(--accent-compose) 100%);
}

.timeline-item:nth-child(3)::after {
  --line-gradient: linear-gradient(to bottom, var(--accent-compose) 0%, var(--accent-blue) 100%);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  top: 10px;
  left: calc(-1 * var(--timeline-padding) + var(--timeline-line-left) + 1px);
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-teal);
  box-shadow: var(--glow-teal);
  z-index: 5;
  transition: var(--transition-smooth);
  display: flex;
  justify-content: center;
  align-items: center;
  --dot-color: var(--accent-teal);
}

.timeline-dot::after {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dot-color);
  transition: var(--transition-smooth);
}

/* Active sonar ping ripple for current job role */
.timeline-item:first-child .timeline-dot::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-teal);
  animation: sonarRipple 2s cubic-bezier(0.25, 0, 0, 1) infinite;
  z-index: -1;
  pointer-events: none;
}

.timeline-item:nth-child(2) .timeline-dot {
  border-color: var(--accent-android);
  box-shadow: var(--glow-green);
  --dot-color: var(--accent-android);
}

.timeline-item:nth-child(3) .timeline-dot {
  border-color: var(--accent-compose);
  box-shadow: var(--glow-purple);
  --dot-color: var(--accent-compose);
}

.timeline-item:nth-child(4) .timeline-dot {
  border-color: var(--accent-blue);
  box-shadow: var(--glow-blue);
  --dot-color: var(--accent-blue);
}

.timeline-item:hover .timeline-dot {
  transform: translate(-50%, -50%) scale(1.2);
  background: var(--bg-primary);
  border-width: 3.5px;
}

.timeline-item:hover .timeline-dot::after {
  transform: scale(1.3);
  background: var(--text-primary);
}

@keyframes sonarRipple {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-content {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 2.25rem;
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.02);
  transition: var(--transition-smooth);
}

body.light-theme .timeline-content {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.timeline-content:hover {
  border-color: rgba(255,255,255,0.1);
  box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

body.light-theme .timeline-content:hover {
  border-color: rgba(0,0,0,0.06);
  box-shadow: 0 15px 30px rgba(0,0,0,0.06);
}

.timeline-content h4 {
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.timeline-company {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-teal);
  margin-bottom: 1.25rem;
}

.timeline-item:nth-child(2) .timeline-company {
  color: var(--accent-android);
}

.timeline-item:nth-child(3) .timeline-company {
  color: var(--accent-compose);
}

.timeline-item:nth-child(4) .timeline-company {
  color: var(--accent-blue); /* Replaced #3b82f6 with theme responsive blue */
}

.timeline-content p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   CONTACT FORM & HIGH IMPACT CHANNELS SECTION
   ========================================================================== */
.contact-section {
  padding: 100px 0;
  background: #0b0c10;
  border-top: 1px solid var(--border-color);
  overflow: hidden;
}

body.light-theme .contact-section {
  background: #fdfdfd;
}

/* High impact contact channels styling */
.contact-channels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto 4rem auto;
}

.channel-card {
  position: relative; /* Support absolute arrow positioning on mobile */
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 2rem 2.5rem;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
  transition: var(--transition-smooth);
}

body.light-theme .channel-card {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.channel-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  transition: var(--transition-fast);
}

.email-card .channel-icon-wrapper { color: var(--accent-teal); }
.phone-card .channel-icon-wrapper { color: var(--accent-android); }
.github-card .channel-icon-wrapper { color: var(--accent-compose); }
.linkedin-card .channel-icon-wrapper { color: var(--accent-blue); }

.channel-icon-wrapper svg {
  width: 24px;
  height: 24px;
  transition: var(--transition-fast);
}


.channel-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0; /* Enable flex-shrink overflow fix */
}

.channel-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.channel-value {
  font-size: clamp(0.78rem, 2.2vw, 1.05rem);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: normal;
}

.channel-arrow {
  color: var(--text-dim);
  transition: var(--transition-fast);
}

/* Hover highlights with neon glowing borders */
.email-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-teal);
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.35),
    var(--glow-teal);
}

body.light-theme .email-card:hover {
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.06),
    var(--glow-teal);
}

.phone-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-android);
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.35),
    var(--glow-green);
}

body.light-theme .phone-card:hover {
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.06),
    var(--glow-green);
}

.github-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-compose);
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.35),
    var(--glow-purple);
}

body.light-theme .github-card:hover {
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.06),
    var(--glow-purple);
}

.linkedin-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.35),
    var(--glow-blue);
}

body.light-theme .linkedin-card:hover {
  box-shadow: 
    0 15px 30px rgba(0, 0, 0, 0.06),
    var(--glow-blue);
}

.channel-card:hover .channel-icon-wrapper {
  transform: scale(1.08);
}

.channel-card:hover .channel-arrow {
  color: var(--text-primary);
  transform: translateX(4px);
}

.contact-wrapper {
  max-width: 760px;
  margin: 0 auto;
}

.contact-form {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 4rem;
  border-radius: 24px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.02);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.input-group {
  position: relative;
  margin-bottom: 2.5rem;
}

.contact-form .input-group:last-of-type {
  margin-bottom: 3rem;
}

.input-group input,
.input-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  padding: 0.8rem 0;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.input-group textarea {
  resize: none;
}

.input-group label {
  position: absolute;
  top: 0.8rem;
  left: 0;
  color: var(--text-secondary);
  pointer-events: none;
  transition: var(--transition-fast);
  font-size: 1rem;
}

.input-border {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-android));
  transition: var(--transition-smooth);
}

/* Floating Label Animation */
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group textarea:focus ~ label,
.input-group textarea:not(:placeholder-shown) ~ label {
  top: -1.2rem;
  font-size: 0.8rem;
  color: var(--accent-teal);
  font-weight: 600;
}

.input-group input:focus ~ .input-border,
.input-group textarea:focus ~ .input-border {
  width: 100%;
}

.input-group input:focus,
.input-group textarea:focus {
  outline: none;
  border-bottom-color: transparent;
}

/* Form Validation States */
.error-msg {
  position: absolute;
  bottom: -1.4rem;
  left: 0;
  font-size: 0.75rem;
  color: #ff5f56;
  opacity: 0;
  transition: var(--transition-fast);
}

body.light-theme .error-msg {
  color: #d32f2f; /* Deep crimson for high contrast readability in light theme */
}

.input-group.invalid input,
.input-group.invalid textarea {
  border-bottom-color: #ff5f56;
}

.input-group.invalid .error-msg {
  opacity: 1;
}

.btn-submit {
  width: 100%;
  padding: 1.1rem;
}

.btn-submit:hover {
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.1);
}

body.light-theme .btn-submit:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.form-success-banner {
  display: none;
  align-items: center;
  gap: 0.75rem;
  background: rgba(61, 220, 132, 0.1);
  border: 1px solid rgba(61, 220, 132, 0.2);
  color: var(--accent-android);
  padding: 1.25rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  margin-top: 2rem;
  animation: fadeIn 0.4s ease;
}

body.light-theme .form-success-banner {
  background: rgba(22, 130, 67, 0.08);
  border-color: rgba(22, 130, 67, 0.18);
}

.form-success-banner span {
  font-size: 1.4rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
}

.footer-container {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ==========================================================================
   RESPONSIVE LAYOUT BREAKPOINTS
   ========================================================================== */
@media (max-width: 1200px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 5rem;
    text-align: center;
  }
  
  .hero-text-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    order: 2; /* Put text content below robot on mobile */
  }
  
  .hero-logo-container {
    order: 1;
    height: 320px;
  }
  
  .android-logo-wrapper {
    width: 220px;
    height: 220px;
  }
  
  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }
  
  .about-bio-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .about-photo-column {
    order: -1;
  }
  
  .about-photo-wrapper {
    max-width: 260px;
  }
  
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .architecture-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    gap: 2rem;
  }
  
  .project-card {
    width: calc(50% - 1.25rem);
    min-width: 280px;
  }
  
  .contact-channels {
    grid-template-columns: 1fr;
    max-width: 500px;
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.2rem; }
  
  .channel-card {
    padding: 1.25rem 1.5rem !important;
    gap: 1rem !important;
  }
  
  .channel-value {
    font-size: 0.85rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    word-break: normal !important;
  }
  
  #navbar {
    height: 70px !important;
    background: var(--bg-navbar) !important;
    backdrop-filter: blur(var(--glass-blur)) !important;
    border-color: var(--border-color) !important;
    animation: none !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    gap: 2.5rem;
    padding: 4rem 2rem;
    transform: translateX(100%);
    transition: var(--transition-smooth);
    z-index: 899;
  }
  
  .nav-menu.open {
    transform: translateX(0);
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .nav-contact-btn {
    width: 100%;
    text-align: center;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card {
    width: 100% !important;
    min-width: 0 !important;
  }
  
  .contact-form {
    padding: 2.5rem;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .timeline {
    --timeline-padding: 2.2rem;
    --timeline-line-left: 12px;
  }
}

@media (max-width: 480px) {
  .hero-text-content h1 {
    font-size: 2.6rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .hero-logo-container {
    height: 260px;
  }
  
  .android-logo-wrapper {
    width: 180px;
    height: 180px;
  }
  
  .logo-background-halo {
    width: 260px;
    height: 260px;
  }
  
  .arch-card {
    padding: 1.75rem;
  }
  
  .channel-card {
    flex-direction: row !important;
    align-items: center !important;
    padding: 1rem 1.25rem !important;
    gap: 0.75rem !important;
  }
  
  .channel-icon-wrapper {
    width: 42px !important;
    height: 42px !important;
    min-width: 42px !important;
  }
  
  .channel-icon-wrapper span, 
  .channel-icon-wrapper svg {
    font-size: 1.25rem !important;
    width: 18px !important;
    height: 18px !important;
  }
  
  .channel-arrow {
    position: static !important;
    width: 18px !important;
    height: 18px !important;
  }
  
  .channel-value {
    font-size: 0.78rem !important;
    white-space: nowrap !important;
    word-break: normal !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }
}

/* ==========================================================================
   PREMIUM CONFORMING CLICK RIPPLE STYLES
   ========================================================================== */
.btn,
.channel-card,
.project-card,
.skill-card,
.theme-toggle-btn {
  position: relative !important;
  overflow: hidden !important;
  /* Ultimate Webkit hack to force perfect border-radius clipping under transform scale animations */
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  isolation: isolate;
}

.click-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: clickRippleAnim 0.6s cubic-bezier(0.1, 0.8, 0.3, 1);
  background: rgba(255, 255, 255, 0.28);
  pointer-events: none;
  z-index: 10;
}

/* Light theme ripple adaptation for beautiful contrast */
body.light-theme .click-ripple {
  background: rgba(0, 0, 0, 0.12);
}

/* Custom ripple adjustment for buttons with high contrast backgrounds */
.btn-primary .click-ripple {
  background: rgba(255, 255, 255, 0.35);
}
body.light-theme .btn-primary .click-ripple {
  background: rgba(255, 255, 255, 0.4);
}

@keyframes clickRippleAnim {
  to {
    transform: scale(1);
    opacity: 0;
  }
}