/* ═══════════════════════════════════════════════════════════
   IRON MAN SPA PORTFOLIO — style.css
   BEM methodology · CSS Custom Properties · Dark Luxury
   ═══════════════════════════════════════════════════════════ */

/* ─── 1. DESIGN TOKENS ─────────────────────────────────── */
:root {
  /* Hacker Palette */
  --color-primary-gold:    #00ff41; /* Kept variable name for compatibility, but value is Terminal Green */
  --color-accent-cyan:     #008f11;
  --color-suit-red:        #003b00;
  --color-suit-gold:       #00ff41;
  --color-glow:            rgba(0, 255, 65, 0.4);
  --color-hologram:        rgba(0, 255, 65, 0.2);

  /* Backgrounds */
  --color-bg:              #050505;
  --color-bg-2:            #0a0a0a;
  --color-bg-3:            #111111;
  --color-surface:         rgba(0,255,65,0.03);
  --color-surface-hover:   rgba(0,255,65,0.06);

  /* Text */
  --color-text:            #e0e0e0;
  --color-text-muted:      #008f11;
  --color-text-dim:        #003b00;

  /* Border */
  --color-border:          rgba(0,255,65,0.2);
  --color-border-hover:    rgba(0,255,65,0.5);

  /* Typography */
  --font-display:          'Space Mono', 'Courier New', monospace;
  --font-body:             'Space Mono', 'Courier New', monospace;
  --font-mono:             'Space Mono', 'Courier New', monospace;

  /* Spacing */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   40px;
  --space-2xl:  64px;
  --space-3xl:  96px;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-pill: 100px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   300ms ease;
  --transition-slow:   600ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Nav */
  --nav-height: 72px;

  /* Z-indices */
  --z-canvas:     0;
  --z-content:    10;
  --z-nav:        100;
  --z-overlay:    200;
  --z-toast:      300;
}

/* Light theme overrides */
[data-theme="light"] {
  --color-bg:            #f5f0e8;
  --color-bg-2:          #ece6d8;
  --color-bg-3:          #e0d9c8;
  --color-surface:       rgba(0,0,0,0.04);
  --color-surface-hover: rgba(0,0,0,0.08);
  --color-text:          #1a1a1a;
  --color-text-muted:    #666;
  --color-text-dim:      #999;
  --color-border:        rgba(212,175,55,0.3);
}

/* ─── 2. RESET & BASE ──────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

img, video, canvas, svg { display: block; max-width: 100%; }

a { color: var(--color-primary-gold); text-decoration: none; }
a:hover { text-decoration: none; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol { list-style: none; }

/* ─── 3. ACCESSIBILITY ──────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary-gold);
  color: #000;
  font-weight: 600;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-md); }

:focus-visible {
  outline: 2px solid var(--color-primary-gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ─── 4. TYPOGRAPHY ─────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  font-weight: 700;
}

.section__heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--space-xl);
  position: relative;
}

.section__heading-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-primary-gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

/* ─── 5. IRON MAN KEYFRAMES ─────────────────────────────── */
@keyframes arc-reactor-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(212,175,55,0.5),
                0 0 40px rgba(212,175,55,0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(212,175,55,0.9),
                0 0 80px rgba(212,175,55,0.4),
                0 0 120px rgba(212,175,55,0.1);
  }
}

@keyframes repulsor-blast {
  0%   { transform: translate(-50%,-50%) scale(0); opacity: 1; }
  100% { transform: translate(-50%,-50%) scale(3); opacity: 0; }
}

@keyframes scan-line {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

@keyframes hologram-flicker {
  0%,100%      { opacity: 0.3; }
  10%,20%,40%,60%,80% { opacity: 0.42; }
  30%,50%,70%  { opacity: 0.18; }
}

@keyframes float-y {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-18px); }
}

@keyframes glow-pulse {
  0%,100% { opacity: 0.6; }
  50%     { opacity: 1; }
}

@keyframes slide-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(120%); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes tracer-grow {
  from { height: 0; }
}

@keyframes nav-logo-pulse {
  0%,100% { text-shadow: 0 0 8px var(--color-primary-gold); }
  50%     { text-shadow: 0 0 20px var(--color-primary-gold); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ─── 6. PAGE TRANSITIONS ───────────────────────────────── */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
}
.page-transition--active {
  opacity: 1;
  pointer-events: all;
}

/* ─── 7. SCROLL TRACER ──────────────────────────────────── */
.scroll-tracer {
  position: fixed;
  right: 16px;
  top: 0;
  width: 2px;
  height: 0%;
  background: linear-gradient(to bottom, var(--color-primary-gold), transparent);
  z-index: var(--z-nav);
  transition: height 100ms linear;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 8px var(--color-glow);
}

/* ─── 8. NAVIGATION ─────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  transition: background var(--transition-base), backdrop-filter var(--transition-base),
              box-shadow var(--transition-base);
}

.nav--scrolled {
  background: rgba(8,8,8,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border), 0 8px 32px rgba(0,0,0,0.4);
}

.nav__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-primary-gold);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  animation: nav-logo-pulse 3s ease-in-out infinite;
}
.nav__logo-arc {
  font-size: 1.4rem;
  animation: spin-slow 8s linear infinite;
  display: inline-block;
}

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

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-base);
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary-gold);
  transition: width var(--transition-base);
  box-shadow: 0 0 6px var(--color-glow);
}
.nav__link:hover,
.nav__link--active {
  color: var(--color-primary-gold);
}
.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

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

.nav__theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}
.nav__theme-toggle:hover {
  border-color: var(--color-primary-gold);
  color: var(--color-primary-gold);
  box-shadow: 0 0 12px var(--color-glow);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.nav__mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(8,8,8,0.96);
  backdrop-filter: blur(20px);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-base), opacity var(--transition-base);
  border-bottom: 1px solid var(--color-border);
}
.nav__mobile-menu--open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.nav__mobile-link {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}
.nav__mobile-link:hover { color: var(--color-primary-gold); }

/* ─── 9. SECTION BASE ──────────────────────────────────── */
.section {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  contain: layout;
}

.section[hidden] {
  display: none !important;
}

.section__arc-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212,175,55,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 100% 100%, rgba(0,217,255,0.03) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ─── 10. HERO SECTION ──────────────────────────────────── */
.hero {
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: var(--z-canvas);
}

.hero__content {
  position: relative;
  z-index: var(--z-content);
  max-width: 640px;
  padding: var(--space-3xl) var(--space-2xl);
  animation: slide-in-up 0.8s ease both;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-primary-gold);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.hero__arc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-gold);
  animation: arc-reactor-pulse 2s ease-in-out infinite;
  flex-shrink: 0;
  display: inline-block;
}

.hero__title {
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 800;
  line-height: 0.95;
  margin-bottom: var(--space-lg);
}
.hero__title-line { display: block; }
.hero__title-line--accent {
  background: linear-gradient(135deg, var(--color-primary-gold) 0%, var(--color-suit-gold) 50%, #fff6c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__role {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.hero__tagline {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}
.hero__tagline em {
  font-style: normal;
  color: var(--color-text);
  font-weight: 500;
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: var(--space-xl);
}
.hero__stat {
  display: flex;
  flex-direction: column;
}
.hero__stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-gold);
  line-height: 1;
}
.hero__stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--space-xs);
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0.5;
  animation: float-y 2s ease-in-out infinite;
}
.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary-gold), transparent);
}
.hero__scroll-text {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary-gold);
}

/* ─── 11. BUTTONS ─────────────────────────────────────── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--transition-base);
  cursor: pointer;
  overflow: hidden;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary-gold), #b8960f);
  color: #000;
  box-shadow: 0 0 20px rgba(212,175,55,0.3);
}
.btn--primary:hover {
  box-shadow: 0 0 40px rgba(212,175,55,0.6), 0 0 80px rgba(212,175,55,0.2);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary-gold);
  border: 1px solid var(--color-primary-gold);
}
.btn--outline:hover {
  background: rgba(212,175,55,0.1);
  box-shadow: 0 0 20px rgba(212,175,55,0.2);
  transform: translateY(-2px);
}

.btn__glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,0.2) 0%, transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover .btn__glow { opacity: 1; }

.btn--submit .btn__loading { display: none; }
.btn--submit.btn--loading .btn__text { display: none; }
.btn--submit.btn--loading .btn__loading { display: inline; }

/* ─── 12. ABOUT SECTION ─────────────────────────────────── */
.about {
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0;
}

.about__container {
  position: relative;
  z-index: var(--z-content);
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about__avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  aspect-ratio: 3 / 4;
}

.about__avatar-canvas {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
  cursor: pointer;
  transition: border-color var(--transition-base);
}
.about__avatar-canvas:hover { border-color: var(--color-primary-gold); }

.about__canvas-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
}

.about__bio {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}
.about__bio strong { color: var(--color-text); font-weight: 600; }

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}
.about__stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
}
.about__stat-card:hover {
  border-color: var(--color-primary-gold);
  background: rgba(212,175,55,0.05);
  box-shadow: 0 0 20px rgba(212,175,55,0.1);
}
.about__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary-gold);
}
.about__stat-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

.about__internship {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
}
.about__internship-badge {
  font-size: 0.75rem;
  color: var(--color-primary-gold);
  font-family: var(--font-mono);
  white-space: nowrap;
}
.about__internship-detail {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.about__internship-detail strong { color: var(--color-text); }

.about__links {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.about__link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-primary-gold);
  border: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}
.about__link:hover {
  border-color: var(--color-primary-gold);
  background: rgba(212,175,55,0.08);
  box-shadow: 0 0 12px rgba(212,175,55,0.2);
}

/* ─── 13. PROJECTS SECTION ──────────────────────────────── */
.projects {
  padding: var(--space-3xl) 0;
}

.projects__bg-canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: var(--z-canvas);
  pointer-events: none;
}

.projects__container {
  position: relative;
  z-index: var(--z-content);
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-spring);
  cursor: pointer;
}
.project-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-6px) translateZ(20px);
  box-shadow:
    0 12px 40px rgba(0,0,0,0.4),
    0 0 30px rgba(212,175,55,0.1),
    inset 0 1px 0 rgba(212,175,55,0.15);
}

.project-card__pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid var(--color-accent-cyan);
  pointer-events: none;
  transform: translate(-50%,-50%) scale(0);
  opacity: 0;
  z-index: 2;
}
.project-card:hover .project-card__pulse {
  animation: scan-pulse 0.5s ease-out forwards;
}

@keyframes scan-pulse {
  0% { transform: translate(-50%, -50%) scale(0.5); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(3); opacity: 0; }
}

.project-card__inner {
  position: relative;
  z-index: 1;
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  height: 100%;
}

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

.project-card__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent-cyan);
  background: rgba(0,217,255,0.08);
  border: 1px solid rgba(0,217,255,0.2);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  letter-spacing: 0.05em;
}

.project-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.project-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
}

.project-card__footer {
  display: flex;
  gap: var(--space-sm);
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.project-card__btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}
.project-card__btn--primary {
  background: var(--color-primary-gold);
  color: #000;
  font-weight: 700;
}
.project-card__btn--primary:hover {
  box-shadow: 0 0 16px rgba(212,175,55,0.5);
  transform: translateY(-1px);
}
.project-card__btn--ghost {
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.project-card__btn--ghost:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

/* ─── 14. SKILLS SECTION ─────────────────────────────────── */
.skills {
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0;
}

.skills__container {
  position: relative;
  z-index: var(--z-content);
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.skills__categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.skills__cat-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary-gold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

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

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition-base);
  cursor: default;
}
.skill-tag:hover {
  border-color: var(--color-primary-gold);
  color: var(--color-primary-gold);
  background: rgba(212,175,55,0.08);
  box-shadow: 0 0 12px rgba(212,175,55,0.2);
}

/* Reset list styles when using native ul/li for skill tags */
ul.skills__tags {
  list-style: none;
  padding: 0;
  margin: 0;
}
ul.skills__tags li.skill-tag {
  display: inline-flex;
}
.skill-tag--accent {
  border-color: rgba(0,217,255,0.3);
  color: var(--color-accent-cyan);
  background: rgba(0,217,255,0.05);
}
.skill-tag--accent:hover {
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 12px rgba(0,217,255,0.3);
  color: var(--color-accent-cyan);
}

/* WIP project card tag */
.project-card__tag--wip {
  border-color: rgba(212,175,55,0.4) !important;
  color: var(--color-primary-gold) !important;
  background: rgba(212,175,55,0.08) !important;
  animation: arc-reactor-pulse 2s ease-in-out infinite;
}

.skills__canvas-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  aspect-ratio: 1;
}

.skills__canvas {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
  cursor: crosshair;
  transition: border-color var(--transition-base);
}
.skills__canvas:hover { border-color: rgba(212,175,55,0.4); }

.skills__canvas-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
}

/* ─── 15. CONTACT SECTION ────────────────────────────────── */
.contact {
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0;
}

.contact__canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: var(--z-canvas);
  pointer-events: none;
}

.contact__container {
  position: relative;
  z-index: var(--z-content);
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
  width: 100%;
}

.contact__header {
  margin-bottom: var(--space-2xl);
}
.contact__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.contact__body {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
.contact__info-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}
.contact__info-icon { font-size: 1.2rem; margin-top: 2px; }
.contact__info-item strong {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}
.contact__info-link {
  color: var(--color-primary-gold);
  transition: color var(--transition-base);
}
.contact__info-link:hover {
  text-shadow: 0 0 12px var(--color-glow);
}

.contact__social {
  display: flex;
  gap: var(--space-md);
}
.contact__social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-base);
}
.contact__social-link svg { width: 18px; height: 18px; }
.contact__social-link:hover {
  border-color: var(--color-primary-gold);
  color: var(--color-primary-gold);
  box-shadow: 0 0 12px rgba(212,175,55,0.3);
  transform: translateY(-2px);
}

/* Contact Form */
.contact__form {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact__repulsor-charge {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-cyan) 0%, transparent 70%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  filter: blur(4px);
}
.contact__form:focus-within .contact__repulsor-charge {
  opacity: 0.6;
  animation: arc-reactor-pulse 1.5s ease-in-out infinite;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.form__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.form__input {
  width: 100%;
  padding: 14px var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition-base);
  outline: none;
  resize: none;
}
.form__input::placeholder { color: var(--color-text-dim); }
.form__input:focus {
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 3px rgba(0,217,255,0.1), 0 0 20px rgba(0,217,255,0.08);
  background: rgba(0,217,255,0.03);
}
.form__input:invalid:not(:placeholder-shown) {
  border-color: rgba(255,80,80,0.5);
}
.form__textarea { min-height: 140px; }
.form__error {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #ff6060;
  min-height: 1em;
}

/* ─── 16. TOAST ──────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  background: var(--color-bg-3);
  border: 1px solid var(--color-primary-gold);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4), 0 0 20px rgba(212,175,55,0.2);
  z-index: var(--z-toast);
  opacity: 0;
  transform: translateX(120%);
  pointer-events: none;
  transition: none;
}
.toast--show {
  animation: toast-in 0.4s var(--transition-spring) forwards;
}
.toast--hide {
  animation: toast-in 0.3s ease reverse forwards;
}
.toast__icon { font-size: 1.2rem; }
.toast__text {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ─── 17. FOOTER ─────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}
.footer__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.footer__text, .footer__copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-dim);
}
.footer__text strong { color: var(--color-text-muted); }

/* ─── 18. SCROLL REVEAL ──────────────────────────────────── */
.reveal-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-item--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.reveal-item:nth-child(2) { transition-delay: 0.1s; }
.reveal-item:nth-child(3) { transition-delay: 0.2s; }
.reveal-item:nth-child(4) { transition-delay: 0.3s; }
.reveal-item:nth-child(5) { transition-delay: 0.4s; }
.reveal-item:nth-child(6) { transition-delay: 0.5s; }

/* ─── 19. REDUCED MOTION ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .hero__canvas,
  .about__avatar-canvas,
  .projects__bg-canvas,
  .skills__canvas,
  .contact__canvas {
    display: none;
  }
  .reveal-item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ─── 20. RESPONSIVE ─────────────────────────────────────── */

/* ── 1024px ── */
@media (max-width: 1024px) {
  :root { --nav-height: 64px; }

  .about__container,
  .skills__container,
  .contact__body {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about__avatar-col { max-width: 400px; margin: 0 auto; }
  .skills__canvas-col { order: -1; max-width: 400px; margin: 0 auto; }

  .hero__content { padding: var(--space-3xl) var(--space-xl); }
}

/* ── 768px ── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .hero__title { font-size: clamp(2.5rem, 12vw, 4rem); }
  .hero__stats { gap: var(--space-lg); }
  .hero__ctas { flex-direction: column; }

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

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

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

  .toast { right: var(--space-md); left: var(--space-md); bottom: var(--space-md); }
}

/* ── 480px ── */
@media (max-width: 480px) {
  :root {
    --space-2xl: 40px;
    --space-3xl: 56px;
  }

  .nav__container { padding: 0 var(--space-md); }

  .hero__content { padding: var(--space-2xl) var(--space-md); }
  .hero__tagline { font-size: 0.95rem; }
  .hero__canvas { height: 50vh !important; }

  .about__container,
  .skills__container,
  .projects__container,
  .contact__container { padding: var(--space-2xl) var(--space-md); }

  .section__heading { font-size: 2rem; }

  .contact__info-item span { font-size: 0.85rem; }
}