/* ==============================================================
   DEPTH SIGNAL — design tokens
   A hydrographic survey chart meets a submersible's sonar HUD:
   drifting contour-line paper, a single blue signal (no other
   hues), sonar-ping ripples on every card, corner target-marks,
   and a slow radar sweep drifting across the whole page.
   Light = "Surface Chart" (blue + white). Dark = "Abyss" (black + blue).
   ============================================================== */

@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@500;600;700;800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600;700&display=swap');

:root {
  --white: #ffffff;
  --black: #000000;

  /* Light Theme — "Surface Chart" (blue + white only) */
  --page-bg: #eef4fb;
  --bg-gradient-1: rgba(20, 97, 201, 0.14);
  --bg-gradient-2: rgba(79, 168, 255, 0.10);
  --bg-gradient-3: rgba(10, 47, 92, 0.07);
  --grid-line: rgba(7, 20, 39, 0.05);
  --grid-line-strong: rgba(20, 97, 201, 0.14);
  --contour-line: rgba(20, 97, 201, 0.15);

  --surface-bg: rgba(255, 255, 255, 0.72);
  --surface-elevated: rgba(255, 255, 255, 0.9);
  --surface-soft: rgba(224, 238, 252, 0.6);
  --footer-bg: rgba(230, 240, 252, 0.88);
  --navbar-bg: rgba(255, 255, 255, 0.8);
  --input-bg: rgba(255, 255, 255, 0.94);

  --text-color: #071427;
  --muted-color: #4c6178;
  --border: rgba(7, 20, 39, 0.1);
  --card-border: rgba(20, 97, 201, 0.26);
  --hero-gradient-start: rgba(20, 97, 201, 0.14);
  --hero-gradient-end: rgba(255, 255, 255, 0.97);
  --hero-image-border: #ffffff;
  --hero-image-shadow: rgba(7, 20, 39, 0.16);

  --signal: #1461c9;
  --signal-hover: #0d4fa8;
  --signal-tint: #e7f1fd;
  --signal-border-tint: #b9d8f8;
  --signal-amber: #0a2f5c;   /* deep-navy accent (kept var name, recolored blue) */
  --signal-magenta: #4fa8ff; /* bright sky accent (kept var name, recolored blue) */
  --signal-warn-bg: rgba(20, 97, 201, 0.12);
  --signal-warn-text: #0d4fa8;
  --signal-rgb: 20, 97, 201;

  --shadow-sm: 0 4px 14px rgba(7, 20, 39, 0.06);
  --shadow-md: 0 16px 40px rgba(7, 20, 39, 0.1);
  --shadow-glow: 0 0 0 1px var(--card-border), 0 18px 44px rgba(20, 97, 201, 0.16);
  --radius-lg: 20px;
  --radius-md: 12px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --font-display: "Unbounded", "Space Grotesk", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

.theme-root {
  background-color: var(--page-bg);
  color: var(--text-color);
}

#theme-switch:checked ~ .theme-root {
  /* Dark Theme — "Abyss" (black + blue only) */
  --page-bg: #02060d;
  --bg-gradient-1: rgba(47, 155, 255, 0.18);
  --bg-gradient-2: rgba(109, 192, 255, 0.08);
  --bg-gradient-3: rgba(10, 47, 92, 0.18);
  --grid-line: rgba(120, 170, 255, 0.06);
  --grid-line-strong: rgba(47, 155, 255, 0.14);
  --contour-line: rgba(47, 155, 255, 0.22);

  --surface-bg: rgba(8, 16, 32, 0.66);
  --surface-elevated: rgba(12, 22, 42, 0.85);
  --surface-soft: rgba(6, 12, 24, 0.55);
  --footer-bg: rgba(2, 5, 11, 0.9);
  --navbar-bg: rgba(2, 5, 11, 0.78);
  --input-bg: rgba(8, 16, 32, 0.92);

  --text-color: #eaf3ff;
  --muted-color: #7d93b8;
  --border: rgba(120, 170, 255, 0.14);
  --card-border: rgba(47, 155, 255, 0.28);
  --hero-gradient-start: rgba(47, 155, 255, 0.18);
  --hero-gradient-end: rgba(2, 5, 11, 0.97);
  --hero-image-border: rgba(234, 243, 255, 0.14);
  --hero-image-shadow: rgba(0, 0, 0, 0.6);

  --signal: #2f9bff;
  --signal-hover: #6dc0ff;
  --signal-tint: #082036;
  --signal-border-tint: #123a5e;
  --signal-amber: #6dc0ff;
  --signal-magenta: #9fd4ff;
  --signal-warn-bg: rgba(47, 155, 255, 0.16);
  --signal-warn-text: #6dc0ff;
  --signal-rgb: 47, 155, 255;

  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 18px 44px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px var(--card-border), 0 0 34px rgba(47, 155, 255, 0.22);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  margin: 0;
  min-height: 100vh;
  line-height: 1.6;
}

/* ========================================================== */
/* AMBIENT BACKGROUND — contour chart + drifting particles +  */
/* a slow diagonal sonar sweep. Fixed, so it never scrolls    */
/* away: the whole page feels submerged.                      */
/* ========================================================== */
.theme-root {
  min-height: 100vh;
  background-color: var(--page-bg);
  color: var(--text-color);
  transition: background-color 0.35s ease, color 0.35s ease;
  position: relative;
  overflow-x: hidden;

  /* Static fine grid — no animation here, so it costs nothing to repaint
     no matter how tall the page gets. All motion lives in the two fixed,
     viewport-sized layers below, animated with transform (GPU, cheap)
     instead of background-position (forces repaint, expensive). */
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 42px 42px, 42px 42px;
}

/* Drifting contour lines + glow + signal particles — one fixed layer,
   one transform animation, bounded to the viewport regardless of page length. */
.theme-root::before {
  content: "";
  position: fixed;
  inset: -15%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.8;
  will-change: transform;
  background-image:
    repeating-linear-gradient(115deg, var(--contour-line) 0px, var(--contour-line) 1px, transparent 1px, transparent 68px),
    radial-gradient(at 14% 20%, var(--bg-gradient-1) 0px, transparent 45%),
    radial-gradient(at 88% 10%, var(--bg-gradient-2) 0px, transparent 42%),
    radial-gradient(at 50% 92%, var(--bg-gradient-3) 0px, transparent 55%),
    radial-gradient(circle at 6% 18%, rgba(var(--signal-rgb), 0.4) 0px, rgba(var(--signal-rgb), 0) 3px),
    radial-gradient(circle at 18% 62%, rgba(var(--signal-rgb), 0.3) 0px, rgba(var(--signal-rgb), 0) 2.4px),
    radial-gradient(circle at 32% 30%, rgba(var(--signal-rgb), 0.32) 0px, rgba(var(--signal-rgb), 0) 2px),
    radial-gradient(circle at 46% 78%, rgba(var(--signal-rgb), 0.28) 0px, rgba(var(--signal-rgb), 0) 2.6px),
    radial-gradient(circle at 58% 12%, rgba(var(--signal-rgb), 0.34) 0px, rgba(var(--signal-rgb), 0) 2.2px),
    radial-gradient(circle at 68% 54%, rgba(var(--signal-rgb), 0.26) 0px, rgba(var(--signal-rgb), 0) 3px),
    radial-gradient(circle at 78% 82%, rgba(var(--signal-rgb), 0.3) 0px, rgba(var(--signal-rgb), 0) 2.3px),
    radial-gradient(circle at 86% 24%, rgba(var(--signal-rgb), 0.34) 0px, rgba(var(--signal-rgb), 0) 2.4px),
    radial-gradient(circle at 94% 66%, rgba(var(--signal-rgb), 0.28) 0px, rgba(var(--signal-rgb), 0) 2px),
    radial-gradient(circle at 10% 92%, rgba(var(--signal-rgb), 0.24) 0px, rgba(var(--signal-rgb), 0) 2.6px);
  animation: ambientDrift 26s ease-in-out infinite alternate;
}

@keyframes ambientDrift {
  0%   { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(2.5%, -3.5%, 0); }
}

/* Slow diagonal sonar sweep — a soft band of light drifting across the page,
   moved with transform instead of background-position for the same reason. */
.theme-root::after {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: 1;
  pointer-events: none;
  will-change: transform;
  background: linear-gradient(115deg, transparent 42%, rgba(var(--signal-rgb), 0.07) 50%, transparent 58%);
  animation: sonarSweep 11s ease-in-out infinite;
}

@keyframes sonarSweep {
  0%   { transform: translate(-12%, -12%); }
  50%  { transform: translate(12%, 12%); }
  100% { transform: translate(-12%, -12%); }
}

.content-wrapper,
.navbar {
  position: relative;
  z-index: 2;
}

/* Glassmorphic blur on key surfaces */
.navbar,
.game-spotlight,
.class-status-card,
.certificate-section,
.certificate-hero,
.contact-wrapper-layout {
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
}

/* Cards that repeat many times on a page (3, 6, sometimes more) skip
   backdrop-filter entirely — it's one of the most expensive properties
   in the sheet, and multiplying it across a whole grid is what was
   causing the lag. A plain semi-transparent surface reads almost
   identically and costs nothing extra to render. */
.portfolio-card,
.game-card,
.stat-box,
.class-highlights div {
  background-color: var(--surface-bg);
}

/* ========================================================== */
/* SIGNATURE — target-mark corners + sonar-ping ripple.       */
/* Corners float above the surface in real 3D on hover; the   */
/* ping expands outward from the card's center like a contact */
/* on a depth-finder.                                          */
/* ========================================================== */
.portfolio-card,
.game-card,
.certificate-card,
.stat-box,
.class-status-card {
  position: relative;
  isolation: isolate;
}

.portfolio-card::before,
.game-card::before,
.certificate-card::before,
.stat-box::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
  transform: translateZ(26px);
  background-image:
    linear-gradient(var(--signal) 2px, transparent 2px),
    linear-gradient(90deg, var(--signal) 2px, transparent 2px),
    linear-gradient(var(--signal) 2px, transparent 2px),
    linear-gradient(90deg, var(--signal) 2px, transparent 2px),
    linear-gradient(var(--signal) 2px, transparent 2px),
    linear-gradient(90deg, var(--signal) 2px, transparent 2px),
    linear-gradient(var(--signal) 2px, transparent 2px),
    linear-gradient(90deg, var(--signal) 2px, transparent 2px);
  background-repeat: no-repeat;
  background-size: 2px 16px, 16px 2px, 2px 16px, 16px 2px, 2px 16px, 16px 2px, 2px 16px, 16px 2px;
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.portfolio-card:hover::before,
.game-card:hover::before,
.certificate-card:hover::before,
.stat-box:hover::before {
  opacity: 0.9;
}

.portfolio-card::after,
.game-card::after,
.certificate-card::after,
.stat-box::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--signal);
  z-index: 3;
  opacity: 0;
  pointer-events: none;
  transform: translateZ(42px);
}

.portfolio-card:hover::after,
.game-card:hover::after,
.certificate-card:hover::after,
.stat-box:hover::after {
  animation: sonarPing 1.6s ease-out infinite;
}

@keyframes sonarPing {
  0%   { box-shadow: 0 0 0 0 rgba(var(--signal-rgb), 0.45); opacity: 1; }
  70%  { box-shadow: 0 0 0 48px rgba(var(--signal-rgb), 0); opacity: 0.55; }
  100% { box-shadow: 0 0 0 48px rgba(var(--signal-rgb), 0); opacity: 0; }
}

/* ========================================================== */

.theme-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background-color: var(--surface-bg);
  color: var(--text-color);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.theme-switch:hover {
  background-color: var(--signal-tint);
  border-color: var(--signal-border-tint);
  transform: translateY(-1px);
}

.theme-state {
  display: none;
}

/* ========================================================== */
/* CSS ROUTING ENGINE (NO JAVASCRIPT)                          */
/* ========================================================== */
.css-router, .mobile-state {
  display: none;
}

.page-section {
  display: none;
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
  width: 100%;
  perspective: 1600px;
}

#route-home:checked ~ .theme-root .content-wrapper #home,
#route-portfolio:checked ~ .theme-root .content-wrapper #portfolio,
#route-game:checked ~ .theme-root .content-wrapper #game,
#route-class:checked ~ .theme-root .content-wrapper #class,
#route-contact:checked ~ .theme-root .content-wrapper #contact {
  display: block;
  animation: viewSlideIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

#route-home:checked ~ .theme-root .navbar #link-home,
#route-portfolio:checked ~ .theme-root .navbar #link-portfolio,
#route-game:checked ~ .theme-root .navbar #link-game,
#route-class:checked ~ .theme-root .navbar #link-class,
#route-contact:checked ~ .theme-root .navbar #link-contact {
  font-weight: 700;
  color: var(--signal);
}

@keyframes viewSlideIn {
  from { opacity: 0; transform: translateY(18px) scale(0.99); filter: blur(6px); }
  to   { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}
/* ========================================================== */

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--navbar-bg);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-color);
  cursor: pointer;
}

.logo-image {
  width: 2.7rem;
  height: 2.7rem;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(var(--signal-rgb), 0.3));
}

.logo-text span { color: var(--signal); }

.nav-links a.nav-link {
  position: relative;
  color: var(--text-color);
  text-decoration: none;
  margin-left: 2.2rem;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  padding-bottom: 4px;
}

.nav-links a.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--signal), var(--signal-magenta));
  transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a.nav-link:hover {
  color: var(--signal);
}

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

.nav-links a.nav-link.active {
  font-weight: 700;
  color: var(--signal);
}

.menu-toggle {
  display: none;
  color: var(--text-color);
  font-size: 1.4rem;
  cursor: pointer;
}

.content-wrapper {
  margin-top: 75px;
  min-height: calc(100vh - 150px);
  padding-bottom: 4rem;
}

/* --- Typography --- */
.text-gradient {
  background: linear-gradient(120deg, var(--signal-amber) 0%, var(--signal) 45%, var(--signal-magenta) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientDrift 8s ease infinite;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}
.section-header p {
  max-width: 680px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--muted-color);
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.btn:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.btn:hover::after {
  left: 130%;
}

.btn-primary {
  background: linear-gradient(120deg, var(--signal), var(--signal-hover));
  color: var(--white);
  box-shadow: 0 4px 14px rgba(var(--signal-rgb), 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(var(--signal-rgb), 0.38);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  background-color: var(--signal-tint);
  color: var(--text-color);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--signal-border-tint);
  transform: translateY(-1px);
}

/* --- Hero --- */
.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  padding: 2rem 0;
}
.hero-text {
  max-width: 620px;
}
.hero-text h1 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.announcement {
  background-color: var(--signal-tint);
  color: var(--signal-hover);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  display: inline-block;
  margin-bottom: 1.5rem;
  border: 1px solid var(--signal-border-tint);
  opacity: 0;
  animation: heroRise 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.05s forwards;
}

.hero-text h1 {
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.08;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: heroRise 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.16s forwards;
}
.hero-text p {
  font-size: 1.1rem;
  color: var(--muted-color);
  margin-bottom: 2rem;
  max-width: 620px;
  opacity: 0;
  animation: heroRise 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.28s forwards;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: heroRise 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.38s forwards;
}
.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  perspective: 1200px;
}

@keyframes heroRise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.stat-box {
  background-color: var(--surface-bg);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform-style: preserve-3d;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease;
  animation: heroRise 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-stats .stat-box:nth-child(1) { animation-delay: 0.42s; }
.hero-stats .stat-box:nth-child(2) { animation-delay: 0.52s; }
.hero-stats .stat-box:nth-child(3) { animation-delay: 0.62s; }

.stat-box:hover {
  transform: rotateX(7deg) rotateY(-5deg) translateY(-3px);
  box-shadow: var(--shadow-glow);
  will-change: transform;
}

.stat-box h3 {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  color: var(--signal);
  font-weight: 700;
}

/* --- Radar display (bonus signature widget — drop into any hero) --- */
.radar-display {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 280px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--signal-tint) 0%, var(--surface-bg) 70%);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin: 0 auto;
}
.radar-display::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-radial-gradient(circle at 50% 50%, var(--grid-line-strong) 0, var(--grid-line-strong) 1px, transparent 1px, transparent 20%),
    linear-gradient(var(--grid-line-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-strong) 1px, transparent 1px);
  background-size: 100% 100%, 100% 50%, 50% 100%;
  background-position: center, center, center;
}
.radar-display::after {
  content: "";
  position: absolute;
  inset: 0;
  background: conic-gradient(from 0deg, rgba(var(--signal-rgb), 0.55), transparent 28%, transparent 100%);
  animation: radarSpin 3.4s linear infinite;
}
@keyframes radarSpin {
  to { transform: rotate(360deg); }
}
.radar-blip {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px 2px rgba(var(--signal-rgb), 0.6);
  animation: sonarPing 2.2s ease-out infinite;
}

/* --- Portfolio --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  perspective: 1600px;
}
.portfolio-card {
  background-color: var(--surface-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease, border-color 0.3s ease;
}
.portfolio-card:hover {
  transform: rotateX(4deg) rotateY(-3deg) translateY(-6px);
  border-color: var(--signal);
  box-shadow: var(--shadow-glow);
  will-change: transform;
}
.portfolio-photo-frame {
  padding: 1rem;
  background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
  border-bottom: 1px solid var(--border);
}
.portfolio-photo-frame img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  border-radius: 12px;
  border: 2px solid var(--hero-image-border);
  box-shadow: 0 10px 24px var(--hero-image-shadow);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.portfolio-card:hover .portfolio-photo-frame img {
  transform: scale(1.045);
}
.portfolio-info { padding: 2rem; }
.portfolio-info p { color: var(--muted-color); line-height: 1.75; }
.tag {
  background-color: var(--surface-bg);
  color: var(--signal-hover);
  border: 1px solid var(--card-border);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Game showcase --- */
.game-showcase {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.game-spotlight {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.4rem;
  align-items: stretch;
  background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 1.4rem;
  box-shadow: var(--shadow-md);
}
.game-spotlight-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.game-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  align-self: flex-start;
  background: var(--signal-tint);
  color: var(--signal-hover);
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.8rem;
  border: 1px solid var(--signal-border-tint);
  animation: badgePulse 2.6s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--signal-rgb), 0.25); }
  50% { box-shadow: 0 0 0 6px rgba(var(--signal-rgb), 0); }
}

.game-spotlight-copy h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}
.game-spotlight-copy p {
  color: var(--muted-color);
  margin-bottom: 1rem;
  max-width: 520px;
}
.game-spotlight-art {
  overflow: hidden;
  border-radius: 18px;
  min-height: 220px;
  perspective: 1000px;
}
.game-spotlight-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  animation: floatTilt 7s ease-in-out infinite;
  transform-style: preserve-3d;
}

@keyframes floatTilt {
  0%, 100% { transform: rotateY(0deg) rotateX(0deg) scale(1); }
  50% { transform: rotateY(-4deg) rotateX(2deg) scale(1.03); }
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  perspective: 1400px;
}
.game-card {
  display: flex;
  flex-direction: column;
  background-color: var(--surface-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease, border-color 0.3s ease;
}
.game-card:hover {
  transform: rotateX(5deg) rotateY(-4deg) translateY(-5px);
  box-shadow: var(--shadow-glow);
  border-color: var(--signal);
  will-change: transform;
}
.game-card:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}
.game-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.game-card:hover .game-card-image {
  transform: scale(1.06);
}
.game-card-body {
  padding: 1rem 1rem 1.2rem;
}
.game-card-body h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin-bottom: 0.45rem;
}
.game-card-body p {
  color: var(--muted-color);
  font-size: 0.92rem;
  line-height: 1.6;
}
.game-card-cta {
  display: inline-flex;
  margin-top: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal-hover);
}

/* --- Class / curriculum --- */
.classes-layout { display: flex; flex-direction: column; gap: 2rem; max-width: 900px; margin: 0 auto; }
.class-module {
  background-color: var(--surface-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  transition: var(--transition-smooth);
}
.class-module:hover {
  border-color: var(--signal);
}
.class-status-card {
  max-width: 960px;
  margin: 0 auto;
  background: linear-gradient(135deg, var(--surface-elevated), var(--surface-bg));
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}
.status-banner {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--signal-warn-bg);
  color: var(--signal-warn-text);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
.status-banner::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
  animation: badgePulse 1.6s ease-in-out infinite;
}
.class-status-grid,
.class-status-grid2 {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  align-items: start;
}
.class-status-main h3,
.class-status-main2 h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.8rem;
}
.class-status-main p,
.class-status-main2 p {
  color: var(--muted-color);
  margin-bottom: 1rem;
}
.class-status-grid2 {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--surface-elevated), var(--surface-bg));
  border: 1px solid var(--card-border);
  border-radius: 24px;
  box-shadow: var(--shadow-md);
}
.class-visuals {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1rem 0 1.2rem;
  align-items: stretch;
  perspective: 1000px;
}
.class-visuals img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}
.class-visuals img:hover {
  transform: rotateX(6deg) rotateY(-6deg) scale(1.06);
  box-shadow: var(--shadow-glow);
  z-index: 3;
  position: relative;
}
.class-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 1rem 0;
}
.class-highlights div {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.8rem;
  transition: var(--transition-smooth);
}
.class-highlights div:hover {
  border-color: var(--signal);
  transform: translateY(-2px);
}
.class-highlights strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal-hover);
  margin-bottom: 0.25rem;
}
.class-highlights span {
  font-weight: 700;
  color: var(--text-color);
}
.curriculum-list { list-style: none; margin-top: 1rem; }
.curriculum-list li { margin-bottom: 0.4rem; font-size: 0.95rem; }
.curriculum-list i { color: var(--signal); margin-right: 0.5rem; }
.class-status-side {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  align-items: flex-start;
}
.class-status-grid2 .class-status-side {
  padding-top: 0.25rem;
}

/* --- Certificates --- */
.certificate-section {
  max-width: 960px;
  margin: 2rem auto 0;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--surface-elevated), var(--surface-bg));
  border: 1px solid var(--card-border);
  border-radius: 24px;
  box-shadow: var(--shadow-md);
}
.certificate-intro {
  margin-bottom: 1rem;
}
.certificate-intro h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}
.certificate-intro p {
  color: var(--muted-color);
}
.certificate-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 1rem;
  align-items: start;
}
.certificate-hero {
  padding: 1rem;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--hero-gradient-start), transparent);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  perspective: 1000px;
}
.certificate-hero img {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  display: block;
  border-radius: 16px;
  animation: floatTilt 8s ease-in-out infinite;
  transform-style: preserve-3d;
}
.certificate-hero-copy h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 1.6;
}
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  perspective: 1200px;
}
.certificate-card {
  display: block;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transform-style: preserve-3d;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s ease, border-color 0.3s ease;
}
.certificate-card:hover {
  transform: rotateX(6deg) rotateY(-5deg) translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-glow);
  border-color: var(--signal);
  will-change: transform;
}
.certificate-card:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}
.certificate-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: var(--signal-tint);
  color: var(--signal-hover);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--signal-border-tint);
}
.module-sidebar { display: flex; flex-direction: column; justify-content: center; align-items: flex-end; gap: 1rem; }
.duration { font-family: var(--font-mono); font-weight: 700; }

/* --- Contact --- */
.contact-wrapper-layout {
  max-width: 750px;
  margin: 0 auto;
  background-color: var(--surface-bg);
  border: 1px solid var(--card-border);
  padding: 4rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.clean-form { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-details {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.contact-details h3 {
  font-family: var(--font-display);
  margin-bottom: 1rem;
  font-size: 1.15rem;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}
.contact-list li {
  font-size: 0.98rem;
}
.contact-list a {
  color: var(--signal);
  text-decoration: none;
  transition: color 0.2s ease;
}
.contact-list a:hover {
  color: var(--signal-hover);
  text-decoration: underline;
}
.form-row-dual { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.input-block { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-color);
}
.input-block input, .input-block select, .input-block textarea {
  background-color: var(--input-bg);
  border: 1px solid var(--border);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  color: var(--text-color);
  transition: var(--transition-smooth);
}
.input-block input:focus, .input-block select:focus, .input-block textarea:focus {
  border-color: var(--signal);
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--signal-rgb), 0.16);
}

.studio-footer {
  background-color: var(--footer-bg);
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--muted-color);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  position: relative;
  z-index: 2;
}

/* --- Mobile Menu Logic (CSS Only) --- */
@media(max-width: 850px) {
  .hero-layout, .game-container { grid-template-columns: 1fr; }
  .class-module { flex-direction: column; gap: 1.5rem; padding: 2rem; }
  .module-sidebar { align-items: flex-start; min-width: 100%; }
  .form-row-dual { grid-template-columns: 1fr; }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--navbar-bg);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    box-shadow: var(--shadow-md);
  }

  .game-spotlight {
    grid-template-columns: 1fr;
  }

  .class-status-grid,
  .class-status-grid2,
  .class-highlights,
  .class-visuals,
  .certificate-grid {
    grid-template-columns: 1fr;
  }

  .class-status-side {
    align-items: flex-start;
  }

  #mobile-menu-state:checked ~ .theme-root .navbar .nav-links {
    display: flex;
  }

  .nav-links label {
    margin: 0.75rem 2rem;
    font-size: 1.1rem;
    display: block;
  }

  .menu-toggle { display: block; }
}

/* --- Respect reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .theme-root,
  .theme-root::before,
  .theme-root::after,
  .announcement,
  .hero-text h1,
  .hero-text p,
  .hero-actions,
  .stat-box,
  .game-badge,
  .status-banner::before,
  .game-spotlight-art img,
  .certificate-hero img,
  .radar-display::after,
  .radar-blip,
  .text-gradient {
    animation: none !important;
  }
  .stat-box, .portfolio-card, .game-card, .certificate-card, .class-visuals img {
    transition: none !important;
  }
  .portfolio-card:hover::after,
  .game-card:hover::after,
  .certificate-card:hover::after,
  .stat-box:hover::after {
    animation: none !important;
    opacity: 0 !important;
  }
  #route-home:checked ~ .theme-root .content-wrapper #home,
  #route-portfolio:checked ~ .theme-root .content-wrapper #portfolio,
  #route-game:checked ~ .theme-root .content-wrapper #game,
  #route-class:checked ~ .theme-root .content-wrapper #class,
  #route-contact:checked ~ .theme-root .content-wrapper #contact {
    animation: none;
    opacity: 1;
  }
  .hero-text h1, .hero-text p, .hero-actions, .announcement, .stat-box {
    opacity: 1;
  }
}