/* ============================================================
   SUBORNO SAMANTA — Futuristic Portfolio v3
   Solution Expert · Multi-Cloud · AI/ML · Software Guru
   Canvas particles · Holographic cards · Animated pipeline
   ============================================================ */

/* ==================== DESIGN TOKENS ==================== */
:root {
  --bg-primary: #050510;
  --bg-secondary: #0a0a18;
  --bg-tertiary: #0f0f22;
  --bg-card: #0c0c1a;
  --bg-card-hover: #111128;
  --bg-terminal: #08081a;
  --bg-glass: rgba(12, 12, 26, 0.7);

  --text-primary: #e8e8f0;
  --text-secondary: #9ca3b8;
  --text-tertiary: #6b728a;
  --text-muted: #4a5068;

  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --accent-subtle: rgba(0, 255, 136, 0.06);

  --cyan: #00d4ff;
  --cyan-glow: rgba(0, 212, 255, 0.15);
  --cyan-subtle: rgba(0, 212, 255, 0.06);

  --purple: #a855f7;
  --purple-glow: rgba(168, 85, 247, 0.15);
  --purple-subtle: rgba(168, 85, 247, 0.06);

  --blue: #3b82f6;
  --blue-glow: rgba(59, 130, 246, 0.15);

  --orange: #f97316;
  --yellow: #facc15;
  --red: #ef4444;
  --pink: #ec4899;

  --border: rgba(255, 255, 255, 0.05);
  --border-strong: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(0, 255, 136, 0.15);
  --border-cyan: rgba(0, 212, 255, 0.15);
  --border-purple: rgba(168, 85, 247, 0.15);

  --shadow-glow: 0 0 30px rgba(0, 255, 136, 0.08);
  --shadow-cyan-glow: 0 0 30px rgba(0, 212, 255, 0.08);
  --shadow-purple-glow: 0 0 30px rgba(168, 85, 247, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.25rem;
  --text-hero: clamp(3rem, 7vw, 6rem);

  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;
  --tracking-tight: -0.03em;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.2em;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-section: clamp(5rem, 10vh, 8rem);

  --container-max: 1200px;
  --nav-height: 64px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 700ms;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

/* Light Mode */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-terminal: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.7);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;

  --accent: #059669;
  --accent-dim: #047857;
  --accent-glow: rgba(5, 150, 105, 0.1);
  --accent-subtle: rgba(5, 150, 105, 0.04);

  --cyan: #0891b2;
  --cyan-glow: rgba(8, 145, 178, 0.1);
  --cyan-subtle: rgba(8, 145, 178, 0.04);

  --purple: #7c3aed;
  --purple-glow: rgba(124, 58, 237, 0.1);
  --purple-subtle: rgba(124, 58, 237, 0.04);

  --blue: #2563eb;

  --border: rgba(0, 0, 0, 0.05);
  --border-strong: rgba(0, 0, 0, 0.08);
  --border-accent: rgba(5, 150, 105, 0.15);
  --border-cyan: rgba(8, 145, 178, 0.15);
  --border-purple: rgba(124, 58, 237, 0.15);

  --shadow-glow: 0 0 20px rgba(5, 150, 105, 0.06);
  --shadow-cyan-glow: 0 0 20px rgba(8, 145, 178, 0.06);
  --shadow-purple-glow: 0 0 20px rgba(124, 58, 237, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
}


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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color var(--duration-normal), color var(--duration-normal);
}

::selection { background: var(--accent); color: var(--bg-primary); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color var(--duration-fast); }
a:hover { color: var(--cyan); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }


/* ==================== UTILITY ==================== */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-md); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.highlight { color: var(--accent); }
.highlight-cyan { color: var(--cyan); }
.highlight-purple { color: var(--purple); }

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  color: var(--accent);
  margin-bottom: var(--space-sm);
  display: inline-flex; align-items: center; gap: 8px;
}
.section-label::before { content: '>'; color: var(--cyan); font-weight: 700; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, var(--text-4xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 600px;
}


/* ==================== PARTICLE CANVAS ==================== */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -10;
  pointer-events: none;
}


/* ==================== ANIMATED GRADIENT ORBS ==================== */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: -9;
  opacity: 0.6;
}

.bg-orb--1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.12), transparent 70%);
  top: -5%; left: -5%;
  animation: orbDrift1 25s ease-in-out infinite;
}

.bg-orb--2 {
  width: 450px; height: 450px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 70%);
  top: 50%; right: -10%;
  animation: orbDrift2 30s ease-in-out infinite;
}

.bg-orb--3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.08), transparent 70%);
  bottom: -5%; left: 20%;
  animation: orbDrift3 28s ease-in-out infinite;
}

@keyframes orbDrift1 {
  0%,100% { transform: translate(0,0); }
  33% { transform: translate(60px, 40px); }
  66% { transform: translate(-30px, 60px); }
}
@keyframes orbDrift2 {
  0%,100% { transform: translate(0,0); }
  33% { transform: translate(-50px, -30px); }
  66% { transform: translate(40px, -50px); }
}
@keyframes orbDrift3 {
  0%,100% { transform: translate(0,0); }
  33% { transform: translate(40px, -40px); }
  66% { transform: translate(-60px, 20px); }
}

[data-theme="light"] .bg-orb { opacity: 0.3; }


/* ==================== SKIP LINK ==================== */
.skip-link {
  position: absolute; top: -100%; left: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--accent); color: var(--bg-primary);
  font-weight: 600; font-size: var(--text-sm);
  border-radius: var(--radius-md); z-index: 10000;
}
.skip-link:focus { top: var(--space-sm); color: var(--bg-primary); }


/* ==================== NAVIGATION ==================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition: all var(--duration-normal);
}

.nav.scrolled {
  background: rgba(5, 5, 16, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(248, 250, 252, 0.88);
}

.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; max-width: 1400px; margin: 0 auto; padding: 0 var(--space-md);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 2px;
}
.nav__logo .bracket { color: var(--text-muted); }
.nav__logo .name { color: var(--accent); }
.nav__logo .cursor {
  display: inline-block; width: 2px; height: 14px;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

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

.nav__links { display: flex; align-items: center; gap: var(--space-lg); }

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: var(--tracking-wide);
  padding: 6px 0; position: relative;
  transition: color var(--duration-fast);
}
.nav__link::before { content: './'; color: var(--text-muted); margin-right: 1px; transition: color var(--duration-fast); }
.nav__link:hover, .nav__link.active { color: var(--accent); }
.nav__link:hover::before, .nav__link.active::before { color: var(--accent); }
.nav__link::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--accent);
  transition: width var(--duration-normal) var(--ease-out);
}
.nav__link:hover::after, .nav__link.active::after { width: 100%; }

.theme-toggle {
  background: var(--bg-card); border: 1px solid var(--border-strong);
  color: var(--text-secondary); cursor: pointer;
  padding: 5px 10px; border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: 0.65rem;
  display: flex; align-items: center; gap: 5px;
  transition: all var(--duration-fast);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); box-shadow: var(--shadow-glow); }
.theme-toggle svg { width: 12px; height: 12px; fill: currentColor; }
.theme-toggle .icon-moon, [data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }
.theme-toggle .label-dark, [data-theme="light"] .theme-toggle .label-light { display: none; }
[data-theme="light"] .theme-toggle .label-dark { display: inline; }

.nav__menu-btn {
  display: none; background: none; border: none;
  color: var(--text-primary); cursor: pointer;
  padding: 8px; width: 40px; height: 40px; position: relative; z-index: 1001;
}
.nav__menu-btn span {
  display: block; width: 22px; height: 2px;
  background: currentColor; transition: all var(--duration-fast);
  position: absolute; left: 50%; transform: translateX(-50%);
}
.nav__menu-btn span:nth-child(1) { top: 12px; }
.nav__menu-btn span:nth-child(2) { top: 19px; }
.nav__menu-btn span:nth-child(3) { top: 26px; }
.nav__menu-btn.open span:nth-child(1) { top: 19px; transform: translateX(-50%) rotate(45deg); }
.nav__menu-btn.open span:nth-child(2) { opacity: 0; }
.nav__menu-btn.open span:nth-child(3) { top: 19px; transform: translateX(-50%) rotate(-45deg); }


/* ==================== HERO ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__bg {
  position: absolute; inset: 0; z-index: -3;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 25%;
  opacity: 0.15; filter: grayscale(50%) contrast(1.2);
}
[data-theme="light"] .hero__bg img { opacity: 0.08; }

.hero__overlay {
  position: absolute; inset: 0; z-index: -2;
  background: linear-gradient(
    160deg,
    rgba(5,5,16,0.88) 0%,
    rgba(5,5,16,0.6) 40%,
    rgba(5,5,16,0.88) 100%
  );
}

[data-theme="light"] .hero__overlay {
  background: linear-gradient(
    160deg,
    rgba(248,250,252,0.92) 0%,
    rgba(248,250,252,0.7) 40%,
    rgba(248,250,252,0.92) 100%
  );
}

/* Scan lines */
.hero__scanlines {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: repeating-linear-gradient(0deg, transparent 0px, transparent 2px, rgba(0,255,136,0.012) 2px, rgba(0,255,136,0.012) 4px);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2xl);
  align-items: center;
  width: 100%;
}

.hero__content { position: relative; z-index: 1; max-width: 700px; }

/* Pulsing status */
.hero__status {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-muted); margin-bottom: var(--space-md);
  display: flex; align-items: center; gap: 8px;
}
.hero__status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%,100% { box-shadow: 0 0 8px var(--accent); }
  50% { box-shadow: 0 0 20px var(--accent), 0 0 40px var(--accent-glow); }
}

.hero__greeting {
  font-family: var(--font-mono); font-size: var(--text-sm);
  color: var(--cyan); margin-bottom: var(--space-xs);
}
.hero__greeting .comment { color: var(--text-muted); }

.hero__name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}
.hero__name .accent-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--cyan) 50%, var(--purple) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 6s ease-in-out infinite;
}
@keyframes gradientShift {
  0%,100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

/* Glitch */
.hero__name:hover .glitch { animation: glitch 0.3s linear; }
@keyframes glitch {
  0% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(2px, -1px); }
  60% { transform: translate(-1px, -2px); }
  80% { transform: translate(1px, 1px); }
  100% { transform: translate(0); }
}

/* Typing role cycler */
.hero__role-cycler {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  min-height: 1.8em;
  display: flex; align-items: center; gap: 6px;
}

.hero__role-prefix {
  color: var(--text-muted);
}

.hero__role-text {
  color: var(--accent);
  border-right: 2px solid var(--accent);
  padding-right: 4px;
  animation: cursorBlink 0.8s step-end infinite;
  white-space: nowrap;
  overflow: hidden;
}

@keyframes cursorBlink {
  0%, 100% { border-color: var(--accent); }
  50% { border-color: transparent; }
}

/* Tech tags */
.hero__tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: var(--space-md);
}

.hero__tag {
  padding: 5px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: all var(--duration-fast);
  cursor: default;
}
.hero__tag:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-glow);
}
.hero__tag--green { border-color: var(--border-accent); color: var(--accent); background: var(--accent-subtle); }
.hero__tag--cyan { border-color: var(--border-cyan); color: var(--cyan); background: var(--cyan-subtle); }
.hero__tag--purple { border-color: var(--border-purple); color: var(--purple); background: var(--purple-subtle); }
.hero__tag--blue { border-color: rgba(59,130,246,0.15); color: var(--blue); background: rgba(59,130,246,0.06); }

/* Hover glow pulse */
.hero__tag--green:hover { box-shadow: 0 0 20px var(--accent-glow), var(--shadow-glow); }
.hero__tag--cyan:hover { box-shadow: 0 0 20px var(--cyan-glow), var(--shadow-cyan-glow); }
.hero__tag--purple:hover { box-shadow: 0 0 20px var(--purple-glow), var(--shadow-purple-glow); }

.hero__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 580px;
  margin-bottom: var(--space-lg);
}
.hero__desc code {
  font-family: var(--font-mono); font-size: var(--text-sm);
  color: var(--accent); background: var(--accent-subtle);
  padding: 2px 6px; border-radius: 3px; border: 1px solid var(--border-accent);
}

.hero__ctas {
  display: flex; gap: var(--space-sm); flex-wrap: wrap;
}

/* Tech orbit on right side */
.hero__orbit {
  position: relative;
  width: 340px; height: 340px;
  flex-shrink: 0;
}

.hero__orbit-ring {
  position: absolute;
  border: 1px solid var(--border);
  border-radius: 50%;
  animation: spinSlow linear infinite;
}

.hero__orbit-ring--1 {
  inset: 0;
  animation-duration: 40s;
}
.hero__orbit-ring--2 {
  inset: 40px;
  animation-duration: 30s;
  animation-direction: reverse;
  border-style: dashed;
}
.hero__orbit-ring--3 {
  inset: 80px;
  animation-duration: 20s;
}

@keyframes spinSlow { to { transform: rotate(360deg); } }

/* Orbit nodes */
.orbit-node {
  position: absolute;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-lg);
  animation: counterSpin linear infinite;
  transition: all var(--duration-fast);
  cursor: default;
}

.orbit-node:hover {
  transform: scale(1.3);
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  z-index: 10;
}

/* Positions for orbit nodes on ring 1 */
.orbit-node--1 { top: -22px; left: 50%; margin-left: -22px; animation-duration: 40s; }
.orbit-node--2 { top: 50%; right: -22px; margin-top: -22px; animation-duration: 40s; }
.orbit-node--3 { bottom: -22px; left: 50%; margin-left: -22px; animation-duration: 40s; }
.orbit-node--4 { top: 50%; left: -22px; margin-top: -22px; animation-duration: 40s; }

/* Positions for orbit nodes on ring 2 */
.orbit-node--5 { top: -22px; left: 50%; margin-left: -22px; animation-duration: 30s; animation-direction: reverse; }
.orbit-node--6 { bottom: -22px; left: 50%; margin-left: -22px; animation-duration: 30s; animation-direction: reverse; }

/* Center node */
.orbit-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-subtle), var(--cyan-subtle));
  border: 2px solid var(--border-accent);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  line-height: 1.3;
  box-shadow: 0 0 30px var(--accent-glow), 0 0 60px rgba(0,255,136,0.05);
  animation: pulseCenter 3s ease-in-out infinite;
}

@keyframes pulseCenter {
  0%,100% { box-shadow: 0 0 30px var(--accent-glow); }
  50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(0,255,136,0.08); }
}

@keyframes counterSpin { to { transform: rotate(-360deg); } }

[data-theme="light"] .hero__orbit-ring { border-color: rgba(0,0,0,0.06); }


/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-mono); font-size: var(--text-xs);
  font-weight: 600; letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  cursor: pointer; transition: all var(--duration-fast);
  border: none; text-decoration: none; line-height: 1;
  position: relative; overflow: hidden;
}
.btn svg { width: 14px; height: 14px; fill: currentColor; }

.btn--primary {
  background: var(--accent); color: #050510;
  box-shadow: 0 0 20px rgba(0,255,136,0.15);
}
.btn--primary:hover {
  color: #050510; transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0,255,136,0.3), 0 4px 20px rgba(0,0,0,0.3);
}

.btn--outline {
  background: transparent; color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn--outline:hover {
  border-color: var(--cyan); color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cyan-glow);
}


/* ==================== SECTIONS ==================== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}
.section--alt { background: var(--bg-secondary); }
.section__header { margin-bottom: var(--space-xl); }
.section__header--center { text-align: center; }
.section__header--center .section-subtitle { margin-left: auto; margin-right: auto; }


/* ==================== ABOUT ==================== */
.about__grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-xl); align-items: start;
}

.about__portrait-frame {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: linear-gradient(135deg, var(--accent), var(--cyan), var(--purple));
  background-size: 300% 300%;
  animation: borderGradient 8s ease-in-out infinite;
}

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

.about__portrait-img {
  width: 100%; aspect-ratio: 3/4;
  object-fit: cover; object-position: center top;
  border-radius: calc(var(--radius-lg) - 2px);
  filter: grayscale(20%) contrast(1.05);
  transition: filter var(--duration-normal);
}
.about__portrait-frame:hover .about__portrait-img {
  filter: grayscale(0%) contrast(1);
}

/* Terminal meta */
.about__portrait-meta {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-muted); margin-top: var(--space-sm);
  padding: var(--space-sm);
  background: var(--bg-terminal);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  line-height: 1.9;
}
.about__portrait-meta .key { color: var(--cyan); }
.about__portrait-meta .value { color: var(--text-secondary); }
.about__portrait-meta .prompt { color: var(--accent); }

.about__text { padding-top: var(--space-xs); }

.about__bio {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-md);
}
.about__bio strong { color: var(--text-primary); font-weight: 600; }

/* Stats */
.about__stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.stat-card {
  padding: var(--space-sm);
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  transition: all var(--duration-fast);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0; transition: opacity var(--duration-fast);
}

.stat-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.stat-card:hover::before { opacity: 1; }

.stat-card__number {
  font-family: var(--font-mono); font-size: var(--text-2xl);
  font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: 4px;
}

.stat-card__label {
  font-size: 0.6rem; color: var(--text-tertiary);
  text-transform: uppercase; letter-spacing: var(--tracking-wider);
}


/* ==================== EXPERIENCE ==================== */
.experience__list { position: relative; }

.experience__item {
  position: relative;
  padding-left: var(--space-xl);
  padding-bottom: var(--space-2xl);
  border-left: 2px solid var(--border-strong);
  transition: border-color var(--duration-fast);
}
.experience__item:last-child { padding-bottom: 0; }

.experience__item::before {
  content: ''; position: absolute;
  left: -7px; top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  transition: all var(--duration-fast);
}
.section--alt .experience__item::before { background: var(--bg-secondary); }

.experience__item:hover::before {
  background: var(--accent);
  box-shadow: 0 0 24px var(--accent-glow);
}
.experience__item:hover { border-left-color: var(--accent); }

.experience__header { margin-bottom: var(--space-md); }

.experience__role {
  font-family: var(--font-display);
  font-size: var(--text-xl); font-weight: 700;
  color: var(--text-primary); margin-bottom: 4px;
}
.experience__company {
  font-family: var(--font-mono); font-size: var(--text-sm);
  color: var(--accent); margin-bottom: 6px;
}
.experience__meta {
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--text-muted);
  display: flex; gap: var(--space-sm); flex-wrap: wrap;
}

.experience__bullets li {
  position: relative; padding-left: var(--space-md);
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}
.experience__bullets li::before {
  content: '▸'; position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}
.experience__bullets li strong { color: var(--text-primary); }


/* ==================== SKILLS : HOLOGRAPHIC CARDS ==================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.skill-category {
  padding: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal);
  position: relative;
  overflow: hidden;
  /* Holographic effect */
  transform-style: preserve-3d;
  perspective: 800px;
}

.skill-category::before {
  content: ''; position: absolute;
  top: -50%; left: -50%; width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent, var(--accent-glow), transparent, var(--cyan-glow), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal);
  animation: holoRotate 6s linear infinite paused;
}

.skill-category:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.skill-category:hover::before {
  opacity: 0.3;
  animation-play-state: running;
}

@keyframes holoRotate { to { transform: rotate(360deg); } }

.skill-category__icon { font-size: var(--text-lg); margin-bottom: var(--space-xs); display: block; }

.skill-category__title {
  font-family: var(--font-mono); font-size: var(--text-sm);
  font-weight: 600; color: var(--accent);
  margin-bottom: var(--space-sm);
  display: flex; align-items: center; gap: 6px;
  position: relative; z-index: 1;
}
.skill-category__title::before { content: '#'; color: var(--text-muted); }

.skill-category__items {
  display: flex; flex-wrap: wrap; gap: 6px;
  position: relative; z-index: 1;
}

.skill-tag {
  padding: 4px 10px;
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 3px;
  transition: all var(--duration-fast) var(--ease-spring);
  white-space: nowrap;
}
.skill-tag:hover {
  color: var(--accent); border-color: var(--border-accent);
  background: var(--accent-subtle);
  box-shadow: 0 0 12px var(--accent-glow);
  transform: translateY(-2px) scale(1.05);
}


/* ==================== PROJECTS ==================== */
.projects__grid { display: grid; gap: var(--space-md); }

.project-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal);
  position: relative; overflow: hidden;
}

/* Animated bottom border gradient */
.project-card::after {
  content: ''; position: absolute;
  bottom: 0; left: 0; width: 200%; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan), var(--purple), var(--accent));
  background-size: 50% 100%;
  opacity: 0;
  transition: opacity var(--duration-fast);
  animation: slideGradient 3s linear infinite;
}

@keyframes slideGradient {
  to { transform: translateX(-50%); }
}

.project-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}
.project-card:hover::after { opacity: 1; }

.project-card__header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}
.project-card__icon { font-size: var(--text-2xl); }
.project-card__number {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-muted);
  padding: 3px 8px; border: 1px solid var(--border); border-radius: var(--radius-sm);
}

.project-card__title {
  font-family: var(--font-display); font-size: var(--text-xl);
  font-weight: 700; color: var(--text-primary); margin-bottom: 2px;
}
.project-card__company {
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--cyan); margin-bottom: var(--space-sm);
}
.project-card__desc {
  font-size: var(--text-sm); color: var(--text-secondary);
  line-height: var(--leading-relaxed); margin-bottom: var(--space-md);
}

.project-card__stack { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: var(--space-md); }
.project-card__stack-tag {
  padding: 3px 8px;
  font-family: var(--font-mono); font-size: 0.6rem;
  color: var(--text-tertiary);
  border: 1px solid var(--border); border-radius: 3px;
}

.project-card__impact {
  padding: var(--space-sm);
  background: var(--accent-subtle);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--text-secondary); line-height: var(--leading-relaxed);
}
.project-card__impact strong { color: var(--accent); }


/* ==================== ACHIEVEMENTS ==================== */
.achievements__grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.achievement-card {
  padding: var(--space-md); background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: all var(--duration-normal); position: relative;
}

.achievement-card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 3px; height: 100%; border-radius: 3px 0 0 3px; opacity: 0;
  transition: opacity var(--duration-fast);
}

.achievement-card:hover {
  border-color: var(--border-accent); transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.achievement-card:hover::before { opacity: 1; }

.achievement-card--cert::before { background: linear-gradient(to bottom, var(--cyan), var(--blue)); }
.achievement-card--award::before { background: linear-gradient(to bottom, var(--accent), var(--cyan)); }
.achievement-card--metric::before { background: linear-gradient(to bottom, var(--purple), var(--pink)); }

.achievement-card__icon { font-size: var(--text-xl); margin-bottom: var(--space-xs); }
.achievement-card__title {
  font-family: var(--font-display); font-size: var(--text-base);
  font-weight: 700; color: var(--text-primary); margin-bottom: 4px;
}
.achievement-card__desc {
  font-size: var(--text-sm); color: var(--text-secondary); line-height: var(--leading-relaxed);
}
.achievement-card__date {
  font-family: var(--font-mono); font-size: 0.6rem;
  color: var(--text-muted); margin-top: 8px;
  text-transform: uppercase; letter-spacing: var(--tracking-wider);
}


/* ==================== RESUME ==================== */
.resume-section { text-align: center; }

.resume__terminal {
  max-width: 620px; margin: 0 auto var(--space-xl);
  background: var(--bg-terminal);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.resume__terminal-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.resume__terminal-dot { width: 10px; height: 10px; border-radius: 50%; }
.resume__terminal-dot--red { background: #ef4444; }
.resume__terminal-dot--yellow { background: #facc15; }
.resume__terminal-dot--green { background: #22c55e; }
.resume__terminal-title {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-muted); margin-left: auto; margin-right: auto;
}

.resume__terminal-body {
  padding: var(--space-md);
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-secondary); text-align: left; line-height: 2;
}
.resume__terminal-body .prompt { color: var(--accent); }
.resume__terminal-body .cmd { color: var(--text-primary); }
.resume__terminal-body .output { color: var(--text-muted); }
.resume__terminal-body .highlight-val { color: var(--cyan); }


/* ==================== CONTACT ==================== */
.contact__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl); align-items: start;
}

.contact__text {
  font-size: var(--text-base); color: var(--text-secondary);
  line-height: var(--leading-relaxed); margin-bottom: var(--space-lg);
}

.contact__links { display: flex; flex-direction: column; gap: var(--space-sm); }

.contact__link {
  display: flex; align-items: center; gap: var(--space-sm);
  color: var(--text-primary);
  font-family: var(--font-mono); font-size: var(--text-sm);
  padding: var(--space-sm);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: all var(--duration-fast);
}
.contact__link:hover {
  border-color: var(--accent); color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: var(--shadow-glow);
  transform: translateX(6px);
}
.contact__link svg { width: 18px; height: 18px; fill: var(--accent); flex-shrink: 0; }

.contact__form { display: flex; flex-direction: column; gap: var(--space-sm); }
.form__group { display: flex; flex-direction: column; gap: 4px; }
.form__label {
  font-family: var(--font-mono); font-size: 0.6rem; font-weight: 600;
  letter-spacing: var(--tracking-wider); text-transform: uppercase;
  color: var(--text-muted);
}
.form__label::before { content: '// '; }

.form__input, .form__textarea {
  padding: 12px 14px;
  font-family: var(--font-mono); font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--bg-terminal);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  outline: none; transition: all var(--duration-fast);
}
.form__input:focus, .form__textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow-glow);
}
.form__textarea { resize: vertical; min-height: 120px; }


/* ==================== FOOTER ==================== */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}
.footer__inner {
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: var(--space-sm);
}
.footer__text {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted);
}
.footer__text a { color: var(--accent); }

.footer__socials { display: flex; gap: var(--space-xs); }
.footer__social {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  color: var(--text-secondary); transition: all var(--duration-fast);
}
.footer__social:hover {
  border-color: var(--accent); color: var(--accent);
  background: var(--accent-subtle); box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.footer__social svg { width: 16px; height: 16px; fill: currentColor; }


/* ==================== SCROLL ANIMATIONS ==================== */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }
.reveal-delay-5 { transition-delay: 400ms; }

/* Hero entrance cascade */
.hero__status, .hero__greeting, .hero__name,
.hero__role-cycler, .hero__tags, .hero__desc,
.hero__ctas, .hero__orbit {
  opacity: 0; transform: translateY(24px);
  animation: fadeUp var(--duration-slow) var(--ease-out) forwards;
}
.hero__status { animation-delay: 100ms; }
.hero__greeting { animation-delay: 250ms; }
.hero__name { animation-delay: 400ms; }
.hero__role-cycler { animation-delay: 550ms; }
.hero__tags { animation-delay: 650ms; }
.hero__desc { animation-delay: 750ms; }
.hero__ctas { animation-delay: 900ms; }
.hero__orbit { animation-delay: 500ms; }

@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }


/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__orbit { display: none; }
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .about__grid { grid-template-columns: 260px 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 56px; }

  .nav__links {
    position: fixed; top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column; align-items: flex-start;
    padding: calc(var(--nav-height) + var(--space-lg)) var(--space-lg);
    gap: var(--space-xs);
    transition: right var(--duration-normal) var(--ease-out);
    box-shadow: var(--shadow-lg);
    border-left: 1px solid var(--border);
  }
  .nav__links.open { right: 0; }
  .nav__link { font-size: var(--text-sm); padding: var(--space-xs) 0; width: 100%; }
  .nav__actions-mobile { display: flex; gap: var(--space-xs); align-items: center; }
  .nav__menu-btn { display: block; }
  .nav__links .theme-toggle { display: none; }

  .about__grid { grid-template-columns: 1fr; }
  .about__portrait { max-width: 260px; }
  .about__stats { grid-template-columns: repeat(2, 1fr); }
  .skills__grid, .achievements__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer__inner { flex-direction: column; text-align: center; gap: var(--space-md); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }
  .about__stats { grid-template-columns: 1fr 1fr; }
}


/* ==================== PRINT ==================== */
@media print {
  .nav, .theme-toggle, .hero__bg, .hero__overlay, .hero__scanlines,
  .hero__orbit, .footer__socials, .contact__form, .nav__menu-btn,
  #particleCanvas, .bg-orb { display: none !important; }
  body { background: white; color: black; }
  .hero { min-height: auto; padding: 2rem 0; }
  .section { padding: 1.5rem 0; }
  .reveal { opacity: 1 !important; transform: none !important; }
}