/* ==========================================================================
   CHAKRAVARTHI KOTIKALAPUDI - ANDROID DEVELOPER PORTFOLIO (2026 EDITORIAL)
   Aesthetics: Behance Editorial 2026 Design Inspiration
   - Deep Obsidian Slate & Electric Violet Vignette
   - Neon Emerald Android Highlights (#3DDC84) & Kotlin Purple (#7F52FF)
   - Bold Display Typography (Anton), Plus Jakarta Sans & JetBrains Mono
   - Numbered Index Architecture & Signature Running Rails
   ========================================================================== */

/* ---------------- CSS Variables & Design Tokens ---------------- */
:root {
  /* Color Palette */
  --bg-primary: #070a12;
  --bg-secondary: #0b101c;
  --bg-card: rgba(15, 22, 36, 0.76);
  --bg-card-hover: rgba(22, 32, 52, 0.88);
  --bg-glass: rgba(255, 255, 255, 0.035);
  
  --border-subtle: rgba(255, 255, 255, 0.09);
  --border-card: rgba(255, 255, 255, 0.14);
  --border-accent: rgba(61, 220, 132, 0.4);
  --border-purple: rgba(127, 82, 255, 0.4);

  /* Brand Accents */
  --android-green: #3DDC84;
  --android-green-glow: rgba(61, 220, 132, 0.28);
  --kotlin-purple: #7F52FF;
  --kotlin-pink: #E24462;
  --cyan-accent: #00E5FF;
  --violet-deep: #4c1d95;
  
  /* Text Colors */
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --text-accent: #3DDC84;

  /* Typography */
  --font-display: 'Anton', 'Plus Jakarta Sans', sans-serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout & Dimensions */
  --max-width: 1200px;
  --header-height: 74px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 35px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(61, 220, 132, 0.2);
  --shadow-glow-purple: 0 0 35px rgba(127, 82, 255, 0.25);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

/* ---------------- Ambient Background Lights ---------------- */
.glow-sphere {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.glow-sphere-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(127, 82, 255, 0.24), transparent 70%);
  top: -140px;
  right: -140px;
}

.glow-sphere-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(61, 220, 132, 0.18), transparent 70%);
  bottom: 25%;
  left: -220px;
}

.glow-sphere-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 70%);
  top: 45%;
  right: 10%;
}

/* ---------------- Reusable Components & Utilities ---------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

.gradient-text {
  background: linear-gradient(135deg, var(--android-green) 0%, #22c55e 50%, var(--cyan-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Behance-Style Section Index Block Pill */
.section-index-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(18, 24, 38, 0.9);
  border: 1px solid var(--border-purple);
  padding: 6px 16px 6px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
  box-shadow: 0 4px 18px rgba(127, 82, 255, 0.15);
}

.pill-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--kotlin-purple), #a855f7);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.pill-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--android-green), var(--kotlin-purple));
  margin: 20px auto 0;
  border-radius: var(--radius-full);
}

/* ---------------- SIGNATURE RUNNING RAILS ---------------- */
.editorial-rail {
  padding: 24px 0;
  position: relative;
  z-index: 1;
}

.rail-flex {
  display: flex;
  align-items: center;
  gap: 20px;
}

.rail-tag {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.4);
}

.rail-line {
  flex-grow: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.15) 0%, rgba(127, 82, 255, 0.4) 50%, rgba(61, 220, 132, 0.3) 100%);
}

.rail-sign {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--android-green);
  white-space: nowrap;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

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

.btn:hover svg {
  transform: translateX(2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--android-green) 0%, #10b981 100%);
  color: #051a0e;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(61, 220, 132, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4ef396 0%, #22c55e 100%);
  box-shadow: 0 6px 26px rgba(61, 220, 132, 0.45);
  transform: translateY(-2px);
  color: #04140b;
}

.btn-outline {
  background: var(--bg-glass);
  color: var(--text-main);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--android-green);
  color: #fff;
  background: rgba(61, 220, 132, 0.08);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  color: var(--android-green);
  border-color: var(--border-accent);
  background: rgba(61, 220, 132, 0.05);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--android-green);
  border-color: var(--android-green);
  background: rgba(61, 220, 132, 0.1);
  transform: translateY(-2px);
}

/* ---------------- Header & Navigation ---------------- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  transition: background var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
}

.logo-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--kotlin-purple), var(--android-green));
  color: #fff;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 2px 10px rgba(127, 82, 255, 0.4);
}

.logo-text {
  letter-spacing: -0.01em;
}

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

.desktop-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--android-green);
  opacity: 0.7;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link:hover .nav-idx, .nav-link.active .nav-idx {
  opacity: 1;
}

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.year-badge {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 3px;
  color: #fff;
  background: rgba(127, 82, 255, 0.15);
  border: 1px solid var(--border-purple);
  padding: 4px 10px;
  border-radius: 6px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  color: var(--text-main);
  cursor: pointer;
  padding: 6px;
}

.mobile-toggle .close-icon {
  display: none;
}

.mobile-toggle.is-active .open-icon {
  display: none;
}

.mobile-toggle.is-active .close-icon {
  display: block;
}

/* Mobile Menu Drawer */
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(10, 14, 24, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(61, 220, 132, 0.25);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.75);
  padding: 20px 24px 28px;
  z-index: 1000;
}

.mobile-menu.open {
  display: block;
  animation: mobileSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes mobileSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-nav-link {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover, .mobile-nav-link:active {
  color: #fff;
  background: rgba(61, 220, 132, 0.08);
  border-color: rgba(61, 220, 132, 0.3);
  transform: translateX(4px);
}

.mobile-nav-link.mobile-cta {
  color: var(--android-green);
  font-weight: 700;
  background: rgba(61, 220, 132, 0.12);
  border-color: rgba(61, 220, 132, 0.4);
  margin-top: 6px;
}

/* ---------------- HERO SECTION (Behance Editorial) ---------------- */
.hero-section {
  padding: 72px 0 60px;
  position: relative;
  overflow: hidden;
}

/* Background Watermark Typography */
.hero-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  pointer-events: none;
  user-select: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 0;
  opacity: 0.04;
  white-space: nowrap;
}

.watermark-title {
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 22rem);
  letter-spacing: 8px;
  line-height: 0.85;
  color: #fff;
}

.watermark-year {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 9rem);
  letter-spacing: 24px;
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.editorial-stamp-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.corner-stamp.accent {
  color: var(--android-green);
  font-weight: 700;
}

.stamp-divider {
  color: var(--border-subtle);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(61, 220, 132, 0.08);
  border: 1px solid rgba(61, 220, 132, 0.25);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--android-green);
  margin-bottom: 24px;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background: var(--android-green);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(61, 220, 132, 0.7);
  animation: pulse-ring 2s infinite cubic-bezier(0.45, 0, 0.2, 1);
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(61, 220, 132, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(61, 220, 132, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 220, 132, 0); }
}

.hero-title {
  font-size: clamp(2.3rem, 4vw, 3.7rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: #fff;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 32px;
}

.hero-description strong {
  color: #fff;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--android-green);
}

/* Hero Portrait Poster Visual */
.hero-poster-frame {
  position: relative;
  max-width: 440px;
  margin: 0 auto;
}

.poster-inner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-md), var(--shadow-glow-purple);
  background: #0d121c;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.poster-inner:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 45px rgba(127, 82, 255, 0.4);
}

.poster-photo {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.poster-inner:hover .poster-photo {
  transform: scale(1.02);
}

.poster-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 10, 18, 0.1) 0%, rgba(7, 10, 18, 0.4) 60%, rgba(7, 10, 18, 0.95) 100%);
  pointer-events: none;
}

.poster-quote-pill {
  position: absolute;
  top: 18px;
  left: 18px;
  right: 18px;
  background: rgba(15, 22, 36, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-purple);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.poster-quote-pill svg {
  width: 14px;
  height: 14px;
  color: var(--android-green);
  flex-shrink: 0;
}

.poster-caption-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 22px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 10, 18, 0.95) 80%);
}

.caption-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--android-green);
  font-weight: 700;
}

.caption-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 1px;
  color: #fff;
  margin-top: 2px;
}

.caption-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--android-green);
}

/* Floating Tech Card Badge */
.floating-tech-card {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: rgba(15, 22, 38, 0.92);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  z-index: 2;
  transition: transform var(--transition-fast);
}

.floating-tech-card:hover {
  transform: translateY(-2px);
}

.tech-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--android-green);
  margin-bottom: 4px;
}

.tech-card-header svg {
  width: 14px;
  height: 14px;
}

.floating-tech-card p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.tech-pill-row {
  display: flex;
  gap: 6px;
}

.micro-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  color: #cbd5e1;
}

.micro-badge.green {
  background: rgba(61, 220, 132, 0.15);
  color: var(--android-green);
  font-weight: 700;
}

/* ---------------- EDITORIAL INDEX SECTION (Behance Inspired) ---------------- */
.index-showcase-section {
  padding: 40px 0 20px;
}

.editorial-index-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px 44px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.index-left-col {
  border-right: 1px solid var(--border-subtle);
  padding-right: 24px;
}

.editorial-index-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 6vw, 5.2rem);
  letter-spacing: 4px;
  line-height: 0.9;
  color: #fff;
  margin-bottom: 12px;
}

.index-gradient-bar {
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--android-green) 0%, var(--kotlin-purple) 100%);
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.index-year-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--text-dim);
  font-weight: 700;
}

.index-right-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.index-row-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.idx-digit {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1;
  width: 38px;
  transition: color var(--transition-fast);
}

.idx-box {
  flex-grow: 1;
  background: linear-gradient(135deg, rgba(76, 29, 149, 0.7) 0%, rgba(127, 82, 255, 0.5) 100%);
  border: 1px solid rgba(127, 82, 255, 0.35);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 10px 16px;
  border-radius: 6px;
  text-align: center;
  transition: all var(--transition-fast);
}

.index-row-btn:hover .idx-digit {
  color: var(--android-green);
}

.index-row-btn:hover .idx-box {
  background: linear-gradient(135deg, var(--android-green) 0%, #10b981 100%);
  color: #051a0e;
  border-color: var(--android-green);
  box-shadow: 0 4px 18px rgba(61, 220, 132, 0.4);
  transform: translateX(4px);
}

/* ---------------- METRICS BANNER ---------------- */
.metrics-section {
  padding: 32px 0 64px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.metric-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  transition: all var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.metric-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(61, 220, 132, 0.1);
  color: var(--android-green);
  margin-bottom: 12px;
}

.metric-icon svg {
  width: 22px;
  height: 22px;
}

.metric-number-wrapper {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-bottom: 4px;
}

.metric-number {
  font-family: var(--font-mono);
  font-size: 2.3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.metric-plus {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--android-green);
}

.metric-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.metric-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ---------------- ABOUT SECTION ---------------- */
.about-section {
  padding: 60px 0 80px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-text-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.about-text-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: #fff;
}

.about-text-card p {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 18px;
}

.about-highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.highlight-box {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.highlight-box svg {
  width: 24px;
  height: 24px;
  color: var(--android-green);
  flex-shrink: 0;
  margin-top: 2px;
}

.highlight-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.highlight-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.45;
}

/* Bio Sidebar with Portrait Thumbnail */
.bio-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  text-align: center;
}

.bio-portrait-thumb {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--android-green);
  box-shadow: 0 0 25px rgba(61, 220, 132, 0.3);
}

.thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.thumb-badge {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(7, 10, 18, 0.9);
  color: var(--android-green);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 0;
}

.bio-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2px;
}

.bio-alias {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--android-green);
  font-weight: 600;
  margin-bottom: 4px;
}

.bio-role {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.bio-info-list {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.bio-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.86rem;
}

.bio-row-label {
  color: var(--text-dim);
}

.bio-row-value {
  color: #fff;
  font-weight: 600;
  text-align: right;
}

.bio-cta-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------------- SKILLS MATRIX SECTION ---------------- */
.skills-section {
  padding: 60px 0 80px;
}

.skills-filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}

.filter-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: #fff;
  border-color: var(--border-card);
  background: var(--bg-card-hover);
}

.filter-tab.active {
  background: var(--android-green);
  color: #061e11;
  border-color: var(--android-green);
  box-shadow: 0 2px 14px rgba(61, 220, 132, 0.35);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.skill-category-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.skill-category-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.cat-icon {
  width: 22px;
  height: 22px;
  color: var(--android-green);
}

.skill-cat-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.skill-pill:hover {
  background: rgba(61, 220, 132, 0.1);
  border-color: var(--border-accent);
  color: #fff;
}

.skill-pill.highlight {
  border-color: rgba(127, 82, 255, 0.4);
  background: rgba(127, 82, 255, 0.1);
}

.pill-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--android-green);
  color: #04140b;
  font-weight: 700;
}

/* ---------------- PROJECTS SECTION ---------------- */
.projects-section {
  padding: 60px 0 80px;
}

.projects-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.project-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.project-card.featured {
  border-color: rgba(61, 220, 132, 0.35);
  background: linear-gradient(180deg, rgba(20, 30, 48, 0.85) 0%, rgba(11, 16, 26, 0.95) 100%);
}

.project-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.project-index-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: #fff;
  background: rgba(127, 82, 255, 0.25);
  border: 1px solid rgba(127, 82, 255, 0.4);
  padding: 3px 8px;
  border-radius: 4px;
}

.project-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--android-green);
  font-weight: 600;
}

.project-category svg {
  width: 16px;
  height: 16px;
}

.project-scale-badge {
  background: rgba(61, 220, 132, 0.12);
  color: var(--android-green);
  border: 1px solid rgba(61, 220, 132, 0.25);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.company-tag {
  font-size: 0.8rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  padding: 3px 8px;
  border-radius: 4px;
}

.project-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}

.project-lead-role {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.role-badge {
  font-size: 0.82rem;
  font-weight: 700;
  color: #bfa5ff;
  background: rgba(127, 82, 255, 0.15);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(127, 82, 255, 0.3);
}

.project-summary {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.project-body-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 36px;
  align-items: center;
}

.project-achievements-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.achievement-item {
  display: flex;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.achievement-item strong {
  color: #fff;
}

.check-icon {
  width: 18px;
  height: 18px;
  color: var(--android-green);
  flex-shrink: 0;
  margin-top: 3px;
}

.tech-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

/* Schematic Blueprint Visual */
.schematic-box {
  background: #0d121c;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
}

.schematic-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.schematic-header svg {
  width: 16px;
  height: 16px;
  color: var(--kotlin-purple);
}

.schematic-diagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}

.layer {
  padding: 12px 14px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.layer-ui {
  background: rgba(61, 220, 132, 0.12);
  border: 1px solid rgba(61, 220, 132, 0.3);
}

.layer-domain {
  background: rgba(127, 82, 255, 0.15);
  border: 1px solid rgba(127, 82, 255, 0.35);
}

.layer-data {
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.layer-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: #fff;
}

.layer-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.layer-arrow {
  color: var(--text-dim);
}

.layer-arrow svg {
  width: 16px;
  height: 16px;
  margin: 0 auto;
}

.schematic-footer {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  justify-content: center;
}

.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--android-green);
  background: rgba(61, 220, 132, 0.08);
  padding: 4px 8px;
  border-radius: 4px;
}

.metric-pill svg {
  width: 12px;
  height: 12px;
}

/* Secondary 2-Column Grid */
.secondary-projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.project-highlights {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.highlight-bullet {
  display: flex;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.highlight-bullet strong {
  color: #fff;
}

/* ---------------- PROFESSIONAL JOURNEY / TIMELINE ---------------- */
.experience-section {
  padding: 60px 0 80px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 36px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}

.timeline-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 24px;
}

.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.marker-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--android-green);
  border: 4px solid var(--bg-primary);
  box-shadow: 0 0 16px var(--android-green);
  z-index: 2;
  margin-top: 6px;
}

.marker-line {
  flex-grow: 1;
  width: 2px;
  background: linear-gradient(180deg, var(--android-green), rgba(255, 255, 255, 0.08));
  margin-top: 8px;
}

.timeline-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.timeline-role {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
}

.timeline-company {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--android-green);
}

.timeline-period-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.timeline-period-badge svg {
  width: 14px;
  height: 14px;
  color: var(--android-green);
}

.timeline-location {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.timeline-location svg {
  width: 14px;
  height: 14px;
}

.timeline-overview {
  color: var(--text-main);
  font-size: 0.98rem;
  margin-bottom: 16px;
}

.timeline-bullets {
  list-style: disc;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 22px;
}

.timeline-bullets strong {
  color: #fff;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

/* ---------------- ACHIEVEMENTS SECTION ---------------- */
.achievements-section {
  padding: 60px 0 80px;
}

.achievements-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.achievement-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-fast);
}

.achievement-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.achieve-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(61, 220, 132, 0.12);
  color: var(--android-green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.achieve-icon-box svg {
  width: 26px;
  height: 26px;
}

.achieve-stat {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 10px;
}

.achievement-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.achievement-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ---------------- EDUCATION SECTION ---------------- */
.education-section {
  padding: 30px 0 60px;
}

.edu-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.edu-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(127, 82, 255, 0.15);
  color: #bfa5ff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.edu-icon svg {
  width: 32px;
  height: 32px;
}

.edu-badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--android-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}

.edu-degree {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
}

.edu-institution {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.edu-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: #cbd5e1;
}

.meta-pill svg {
  width: 14px;
  height: 14px;
  color: var(--android-green);
}

/* ---------------- CONTACT SECTION ---------------- */
.contact-section {
  padding: 60px 0 80px;
}

.contact-box {
  background: linear-gradient(180deg, rgba(20, 28, 45, 0.85) 0%, rgba(9, 13, 22, 0.96) 100%);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-md);
}

.contact-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: all var(--transition-fast);
  position: relative;
}

.contact-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-accent);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(61, 220, 132, 0.1);
  color: var(--android-green);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-text {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.contact-text .label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-text .value {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  word-break: break-all;
}

.contact-text .value:hover {
  color: var(--android-green);
}

.copy-icon-btn {
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.copy-icon-btn:hover {
  color: var(--android-green);
  background: rgba(61, 220, 132, 0.1);
}

.copy-icon-btn svg, .ext-icon {
  width: 18px;
  height: 18px;
}

.ext-icon {
  color: var(--text-dim);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #cbd5e1;
}

.form-group input, .form-group textarea {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #fff;
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--android-green);
  box-shadow: 0 0 0 3px rgba(61, 220, 132, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ---------------- FOOTER ---------------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
  background: #050810;
}

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

.footer-logo {
  margin-bottom: 8px;
}

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

.footer-links {
  display: flex;
  gap: 20px;
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

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

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ---------------- TOAST NOTIFICATION ---------------- */
.toast-container {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: #0e1526;
  border: 1px solid var(--android-green);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: none;
}

.toast-container.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-icon {
  width: 18px;
  height: 18px;
  color: var(--android-green);
}

/* ---------------- RESPONSIVE BREAKPOINTS ---------------- */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-poster-frame {
    max-width: 380px;
  }

  .editorial-index-card {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 28px 24px;
  }

  .index-left-col {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding-right: 0;
    padding-bottom: 20px;
    text-align: center;
  }

  .index-gradient-bar {
    max-width: 160px;
    margin: 0 auto 12px;
  }

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

  .project-body-grid {
    grid-template-columns: 1fr;
  }

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

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievements-cards-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .year-badge {
    display: none;
  }

  .nav-container {
    padding: 0 16px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-section {
    padding: 40px 0 48px;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 2.75rem);
    line-height: 1.15;
  }

  .hero-description {
    font-size: 1rem;
    line-height: 1.6;
  }

  .hero-poster-frame {
    max-width: 300px;
    margin: 0 auto;
  }

  .floating-tech-card {
    right: 0;
    bottom: -10px;
    padding: 10px 14px;
    max-width: 220px;
  }

  /* Material 3 Touch Horizontal Pill Tabs */
  .skills-filter-bar {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 4px 16px 12px;
    margin-left: -16px;
    margin-right: -16px;
    gap: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .skills-filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-tab {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.82rem;
    padding: 8px 14px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .index-right-col {
    grid-template-columns: 1fr;
  }

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

  /* Projects Mobile Polish */
  .project-header-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 20px;
  }

  .project-scale-badge {
    align-self: flex-start;
    font-size: 0.75rem;
  }

  .project-card {
    border-radius: var(--radius-lg);
  }

  .project-details {
    padding: 20px;
  }

  .project-schematic {
    margin-top: 20px;
    padding: 0 20px 20px;
  }

  .schematic-diagram {
    padding: 14px;
  }

  .layer {
    padding: 10px 12px;
    font-size: 0.78rem;
  }

  .timeline-item {
    grid-template-columns: 20px 1fr;
    gap: 12px;
  }

  .marker-dot {
    width: 12px;
    height: 12px;
    border-width: 2px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .contact-box {
    padding: 24px 18px;
  }

  .contact-input,
  .contact-textarea {
    font-size: 16px !important; /* Prevents auto-zoom on iOS Safari */
  }

  .edu-card {
    flex-direction: column;
    text-align: center;
  }

  .edu-meta {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  #nav-contact-btn {
    display: none; /* Hide header button to make room for brand and mobile toggle */
  }

  .hero-title {
    font-size: clamp(1.85rem, 8.5vw, 2.3rem);
  }

  .editorial-stamp-row {
    flex-wrap: wrap;
    font-size: 0.72rem;
    gap: 6px;
  }

  .status-badge {
    font-size: 0.76rem;
    padding: 6px 10px;
  }

  .watermark-title {
    font-size: 4.5rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .metric-card {
    padding: 18px 12px;
  }

  .metric-value {
    font-size: 2.2rem;
  }

  .metric-label {
    font-size: 0.74rem;
  }

  .tech-tags-list {
    gap: 6px;
  }

  .tech-tags-list .tag {
    font-size: 0.74rem;
    padding: 4px 10px;
  }
}

@media (max-width: 360px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .brand-logo .logo-text {
    font-size: 0.95rem;
  }
}

/* Touch Device Optimization: Disable Hover/Mouse Intensive FX */
@media (hover: none) and (pointer: coarse) {
  .cursor-glow {
    display: none !important;
  }

  .futuristic-tilt {
    transform: none !important;
    transition: none !important;
  }

  .border-laser-beam {
    opacity: 0.3;
  }
}

/* ==========================================================================
   FUTURISTIC CYBER ANIMATIONS & 3D INTERACTION STYLES
   ========================================================================== */

/* 1. Cyber Particles Canvas */
.cyber-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

/* 2. Cursor Spotlight */
.cursor-glow {
  position: fixed;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(61, 220, 132, 0.09) 0%, rgba(127, 82, 255, 0.04) 40%, transparent 70%);
  mix-blend-mode: screen;
  transition: opacity 0.3s ease;
  opacity: 0.8;
}

/* 3. 3D Tilt Card Interaction */
.futuristic-tilt {
  transform-style: preserve-3d;
  transition: transform 0.15s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.25s ease;
  will-change: transform;
}

/* 4. Glowing Neon Border Laser Beam Animation */
.border-laser-beam {
  position: absolute;
  inset: -1.5px;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--android-green) 50%, var(--kotlin-purple) 75%, transparent 100%);
  background-size: 200% 200%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  animation: border-beam-run 4s linear infinite;
  opacity: 0.9;
  z-index: 2;
}

@keyframes border-beam-run {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 5. Futuristic HUD Cyber Corner Brackets */
.hud-card {
  position: relative;
}

.hud-card::before, .hud-card::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  z-index: 3;
}

.hud-card::before {
  top: -2px;
  left: -2px;
  border-top: 2px solid var(--android-green);
  border-left: 2px solid var(--android-green);
  border-top-left-radius: 6px;
  box-shadow: -2px -2px 8px rgba(61, 220, 132, 0.4);
}

.hud-card::after {
  bottom: -2px;
  right: -2px;
  border-bottom: 2px solid var(--android-green);
  border-right: 2px solid var(--android-green);
  border-bottom-right-radius: 6px;
  box-shadow: 2px 2px 8px rgba(61, 220, 132, 0.4);
}

/* 6. Levitation & Floating Cyber Animations */
.levitate-anim {
  animation: float-hover 3.8s ease-in-out infinite alternate;
}

.levitate-slow {
  animation: float-hover-slow 5.5s ease-in-out infinite alternate;
}

@keyframes float-hover {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-6px) rotate(0.5deg);
  }
  100% {
    transform: translateY(-10px) rotate(-0.5deg);
  }
}

@keyframes float-hover-slow {
  0% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-7px);
  }
}

/* 7. Cyber Pulse & Radar Sweep Effects */
@keyframes cyber-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(61, 220, 132, 0.6);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(61, 220, 132, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(61, 220, 132, 0);
  }
}

.pulse-indicator {
  animation: cyber-pulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

/* 8. Text Decryption & Glitch Glow */
.cyber-scrambled {
  font-family: var(--font-mono);
  color: var(--android-green);
  text-shadow: 0 0 8px rgba(61, 220, 132, 0.5);
}