@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Poppins:wght@300;400;500;600;700&display=swap');

/* ============ THEMES ============ */
:root {
  --primary: #00E676;
  --primary-2: #00B85C;
  --primary-soft: rgba(0, 230, 118, 0.13);
  --primary-glow: rgba(0, 230, 118, 0.34);
  --accent: #39F59A;
  --bg: #040907;
  --bg-2: #06110C;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.09);
  --text: #F2FFF8;
  --muted: #9DB8AA;
  --border: rgba(0, 230, 118, 0.22);
  --glass: rgba(5, 15, 10, 0.70);
  --glass-strong: rgba(4, 9, 7, 0.88);
  --shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --grid-line: rgba(0, 230, 118, 0.055);
  --nav-height: 68px;
  --star-color: #CFF4FF;
  --logo-cube: #0e1f16;
  --logo-cube-border: rgba(0, 230, 118, 0.55);
  --logo-bca: #F2FFF8;
  --logo-hub: #39F59A;
  --logo-tagline: #7ea58f;
}

body.light {
  --primary: #00A85E;
  --primary-2: #008C4F;
  --primary-soft: rgba(0, 168, 94, 0.13);
  --primary-glow: rgba(0, 168, 94, 0.3);
  --accent: #0d8f5c;
  --bg: #eef7f1;
  --bg-2: #e1f0e6;
  --surface: rgba(0, 0, 0, 0.04);
  --surface-2: rgba(0, 0, 0, 0.07);
  --text: #06231a;
  --muted: #39684e;
  --border: rgba(0, 150, 95, 0.28);
  --glass: rgba(255, 255, 255, 0.66);
  --glass-strong: rgba(255, 255, 255, 0.92);
  --shadow: 0 8px 40px rgba(0, 90, 60, 0.12);
  --card-shadow: 0 10px 34px rgba(0, 90, 60, 0.14);
  --grid-line: rgba(0, 150, 95, 0.07);
  --star-color: #33504f;
  --logo-cube: #ffffff;
  --logo-cube-border: rgba(0, 140, 79, 0.55);
  --logo-bca: #06231a;
  --logo-hub: #008C4F;
  --logo-tagline: #39684e;
}

/* ============ RESET ============ */
* { margin: 0; padding: 0; box-sizing: border-box; scroll-behavior: smooth; }

html { background: transparent; }
body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
  min-height: 100vh;
}

h1, h2, h3 { font-family: 'Orbitron', sans-serif; line-height: 1.25; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
button { font-family: 'Poppins', sans-serif; cursor: pointer; }
::selection { background: var(--primary); color: #04100c; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary-2); border-radius: 8px; }

/* ============ 3D STARFIELD BACKGROUND ============ */
#starfield { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }

.grid-overlay {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.9), transparent 75%);
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.9), transparent 75%);
}

/* ============ NAVBAR ============ */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 3rem);
  background: var(--glass); backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background 0.4s ease;
}

.nav-logo { display: flex; align-items: center; gap: 12px; }
.logo-3d-wrap {
  display: flex; align-items: center; gap: 12px;
}
.logo-icon-3d {
  width: 38px; height: 38px; perspective: 400px;
  flex-shrink: 0; display: inline-block;
}
.logo-cube {
  display: block; width: 100%; height: 100%; position: relative;
  transform-style: preserve-3d;
  transform: rotateX(-20deg) rotateY(-20deg);
  transition: transform 0.5s ease;
  animation: floatRotation 8s infinite linear;
  will-change: transform;
}
.logo-3d-wrap:hover .logo-cube {
  animation: hoverRotation 2.5s infinite linear;
}
.logo-cube .cube-face {
  position: absolute; width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, rgba(14, 31, 22, 0.95), rgba(8, 20, 13, 0.95));
  border: 1px solid var(--logo-cube-border);
  border-radius: 8px;
  box-shadow: inset 0 0 12px rgba(0, 230, 118, 0.12), 0 2px 10px rgba(0, 0, 0, 0.55);
  font-size: 15px;
}
.logo-cube .cube-face i { color: #d9ffe9; text-shadow: 0 0 8px rgba(0, 230, 118, 0.55); }
.logo-cube .cube-front  { transform: rotateY(0deg) translateZ(19px); }
.logo-cube .cube-back   { transform: rotateY(180deg) translateZ(19px); }
.logo-cube .cube-top    { transform: rotateX(90deg) translateZ(19px); }
.logo-cube .cube-bottom { transform: rotateX(-90deg) translateZ(19px); }

@keyframes floatRotation {
  0% { transform: rotateX(-25deg) rotateY(0deg); }
  100% { transform: rotateX(-25deg) rotateY(360deg); }
}
@keyframes hoverRotation {
  0% { transform: rotateX(-25deg) rotateY(0deg); }
  100% { transform: rotateX(-25deg) rotateY(-360deg); }
}

.logo-text-3d {
  display: block; line-height: 1.15; font-family: 'Orbitron', 'Poppins', sans-serif;
  white-space: nowrap;
}
.logo-text-3d .logo-bca {
  display: inline; font-size: 1.25rem; font-weight: 700; color: var(--logo-bca);
  letter-spacing: 0.5px;
}
.logo-text-3d .logo-hub {
  display: inline; font-size: 1.25rem; font-weight: 700; color: var(--logo-hub);
  letter-spacing: 0.5px;
}
.logo-text-3d .logo-ver {
  display: inline; font-size: 0.85rem; font-weight: 700; color: #FF3B3B;
  letter-spacing: 0.5px; text-shadow: 0 0 10px rgba(255, 59, 59, 0.45); margin-left: 3px;
}
.logo-text-3d .logo-tagline {
  display: block;
  font-family: 'Orbitron', sans-serif; font-style: normal;
  font-size: 0.58rem; font-weight: 500; letter-spacing: 1px;
  text-transform: uppercase; color: var(--logo-tagline);
  margin-top: 1px;
}

.nav-links { display: flex; align-items: center; gap: clamp(0.5rem, 1.6vw, 1.4rem); list-style: none; }
.nav-links a {
  position: relative; color: var(--muted); font-weight: 500; font-size: 0.95rem;
  padding: 0.45rem 0.35rem; transition: color 0.3s, text-shadow 0.3s;
}
.nav-links a::after {
  content: ''; position: absolute; left: 50%; bottom: 0; height: 2px; width: 0;
  background: var(--primary); box-shadow: 0 0 10px var(--primary-glow);
  transition: width 0.3s ease, left 0.3s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); text-shadow: 0 0 12px var(--primary-glow); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; left: 0; }

.nav-actions { display: flex; align-items: center; gap: 0.8rem; }

/* Theme toggle button */
.theme-toggle {
  position: relative; width: 54px; height: 28px; border-radius: 20px;
  border: 1px solid var(--border); background: var(--surface-2);
  cursor: pointer; display: flex; align-items: center; padding: 3px;
  transition: background 0.4s;
}
.theme-toggle .knob {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary); box-shadow: 0 0 14px var(--primary-glow);
  display: grid; place-items: center; font-size: 11px; color: #04100c;
  transform: translateX(26px);
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}
body.light .theme-toggle .knob { transform: translateX(0); }

.burger { display: none; font-size: 1.4rem; color: var(--primary); cursor: pointer; background: none; border: none; }

/* Navbar CTA */
.btn-cta {
  padding: 0.55rem 1.4rem; border-radius: 30px; font-weight: 600; font-size: 0.9rem;
  color: #04100c; background: var(--primary); border: none;
  box-shadow: 0 0 18px var(--primary-glow);
  transition: transform 0.3s, box-shadow 0.3s;
}
.btn-cta:hover { transform: translateY(-2px); box-shadow: 0 0 30px var(--primary-glow); }
.nav-links .mobile-logout { display: none; }

/* ============ 3D BUTTONS ============ */
.btn-3d {
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 1rem 2.6rem; border-radius: 50px; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; font-size: 0.95rem;
  color: var(--primary); background: transparent; border: 2px solid var(--primary);
  overflow: hidden; transition: all 0.35s ease; cursor: pointer;
  box-shadow: 0 0 18px var(--primary-glow), inset 0 0 0 0 transparent;
  transform-style: preserve-3d;
}
.btn-3d::before {
  content: ''; position: absolute; inset: 0; background: var(--primary);
  transform: translateY(101%); transition: transform 0.4s cubic-bezier(0.7, 0, 0.2, 1); z-index: -1;
}
.btn-3d:hover { color: #04100c; transform: translateY(-4px) rotateX(4deg); box-shadow: 0 14px 34px var(--primary-glow), 0 0 0 1px var(--primary); }
.btn-3d:hover::before { transform: translateY(0); }
.btn-3d.ghost { color: var(--text); border-color: var(--border); box-shadow: none; }
.btn-3d.ghost:hover { color: #04100c; border-color: var(--primary); }
.btn-3d.small { padding: 0.6rem 1.5rem; font-size: 0.85rem; }
.btn-3d.block { width: 100%; }

/* ============ CARDS (3D TILT) ============ */
.tilt-scene { perspective: 1100px; }
.tilt-card {
  position: relative; transform-style: preserve-3d;
  background: var(--surface); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: 20px;
  padding: 2rem; transition: border-color 0.3s, box-shadow 0.3s;
  will-change: transform;
}
.tilt-card .tilt-inner { transform: translateZ(46px); transform-style: preserve-3d; }
.tilt-card .tilt-ico { transform: translateZ(60px); }
.tilt-card .glare {
  position: absolute; inset: 0; border-radius: 20px; overflow: hidden; pointer-events: none;
  background: radial-gradient(circle at var(--gx, 50%) var(--gy, 50%), rgba(255,255,255,0.16), transparent 55%);
  opacity: 0; transition: opacity 0.3s;
}
.tilt-card:hover .glare { opacity: 1; }
.tilt-card:hover { border-color: var(--primary); box-shadow: var(--card-shadow), 0 0 30px var(--primary-glow); }

.card-ico {
  width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center;
  font-size: 1.7rem; color: var(--primary);
  background: var(--primary-soft); border: 1px solid var(--border);
  box-shadow: 0 0 20px var(--primary-glow);
  margin-bottom: 1.2rem;
}

/* ============ SECTION HEADINGS ============ */
.section { padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 3rem); position: relative; }
.section-head { text-align: center; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-eyebrow {
  display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 3px;
  color: var(--primary); text-transform: uppercase;
  border: 1px solid var(--border); border-radius: 30px; padding: 0.35rem 1.1rem;
  margin-bottom: 1rem; background: var(--primary-soft);
}
.section-head h2 {
  font-size: clamp(1.8rem, 4.5vw, 3rem); color: var(--text);
  text-transform: uppercase; letter-spacing: 2px;
}
.section-head h2 .grad {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.section-head p { color: var(--muted); max-width: 640px; margin: 0.8rem auto 0; }

/* ============ SCROLL REVEAL (3D flip on scroll) ============ */
[data-reveal] {
  opacity: 0;
  transform: perspective(900px) translateY(55px) rotateX(-30deg);
  transform-origin: center top;
  transition: opacity 0.8s ease, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
[data-reveal].in-view { opacity: 1; transform: perspective(900px) translateY(0) rotateX(0deg); }
[data-reveal="left"] { transform: perspective(900px) translateX(-70px) rotateY(28deg); }
[data-reveal="left"].in-view { transform: perspective(900px) translateX(0) rotateY(0deg); }
[data-reveal="right"] { transform: perspective(900px) translateX(70px) rotateY(-28deg); }
[data-reveal="right"].in-view { transform: perspective(900px) translateX(0) rotateY(0deg); }

/* ============ SCROLL PROGRESS BAR ============ */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 14px var(--primary-glow);
  z-index: 2000;
  border-radius: 0 3px 3px 0;
}

/* ============ HERO PARALLAX (3D on scroll) ============ */
.hero-inner { will-change: transform; }

/* ============ HERO (welcome/main) ============ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: calc(var(--nav-height) + 2rem) 1rem 3rem;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: -30%;
  background: radial-gradient(circle at 50% 50%, var(--primary-glow), transparent 45%);
  filter: blur(70px); opacity: 0.55; animation: pulse-glow 6s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.45; }
  50% { transform: scale(1.15); opacity: 0.7; }
}
.hero-inner { position: relative; z-index: 2; max-width: 900px; }

/* 3D floating title */
.hero-title-wrap { perspective: 800px; }
.hero-title {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(2.6rem, 9vw, 6.4rem); line-height: 1.08;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text); transform-style: preserve-3d;
  animation: float3d 6s ease-in-out infinite;
  text-shadow: 0 0 20px var(--primary-glow), 0 10px 40px rgba(0,0,0,0.4);
}
.hero-title .grad {
  display: block;
  background: linear-gradient(120deg, #00E676, #39F59A);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 18px rgba(0, 230, 118, 0.35));
}
@keyframes float3d {
  0%, 100% { transform: rotateX(8deg) rotateY(-6deg) translateY(0); }
  50% { transform: rotateX(0deg) rotateY(6deg) translateY(-14px); }
}
.hero-sub {
  color: var(--muted); font-size: clamp(1rem, 2.4vw, 1.3rem); max-width: 620px;
  margin: 1.4rem auto 0;
}
.hero-ctas { margin-top: 2.2rem; display: flex; flex-direction: column; align-items: center; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.live-users-line { color: var(--muted); font-weight: 600; font-size: 0.95rem; }
.live-users-line .live-users-num { color: var(--primary); font-weight: 800; font-size: 1.15rem; text-shadow: 0 0 12px var(--primary-glow); }
.hero-stats {
  margin-top: 3rem; display: flex; justify-content: center; gap: clamp(1.4rem, 4vw, 3.4rem); flex-wrap: wrap;
}
.stat b {
  display: block; font-family: 'Orbitron', 'Poppins', sans-serif; font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--primary); text-shadow: 0 0 16px var(--primary-glow);
}
.stat span { color: var(--muted); font-size: 0.85rem; letter-spacing: 1px; }

/* 3D emblem (CSS cube, emerald glass) */
.hero-logo-3d {
  perspective: 900px; margin: 0 auto 2rem; width: 128px; height: 128px;
  position: relative; z-index: 1;
}
.hero-logo-3d .logo-cube-item {
  width: 100%; height: 100%; position: relative; transform-style: preserve-3d;
  animation: heroFloat 7s ease-in-out infinite, heroRotate 20s linear infinite;
  will-change: transform;
}
.hero-logo-3d .cube-face {
  position: absolute; inset: 0; display: grid; place-items: center;
  border-radius: 14px;
  background: linear-gradient(150deg, rgba(14, 31, 22, 0.92), rgba(7, 17, 11, 0.95));
  border: 1.5px solid rgba(0, 230, 118, 0.5);
  box-shadow: inset 0 0 26px rgba(0, 230, 118, 0.14), 0 0 18px rgba(0, 230, 118, 0.12);
  font-size: 2.1rem;
}
.hero-logo-3d .cube-face i { color: #d9ffe9; text-shadow: 0 0 14px rgba(0, 230, 118, 0.6); }
.hero-logo-3d .cube-face.face-top i { color: #FF3B3B; text-shadow: 0 0 14px rgba(255, 59, 59, 0.5); }
.hero-logo-3d .cube-front  { transform: rotateY(0deg) translateZ(64px); }
.hero-logo-3d .cube-back   { transform: rotateY(180deg) translateZ(64px); }
.hero-logo-3d .cube-right  { transform: rotateY(90deg) translateZ(64px); }
.hero-logo-3d .cube-left   { transform: rotateY(-90deg) translateZ(64px); }
.hero-logo-3d .cube-top    { transform: rotateX(90deg) translateZ(64px); }
.hero-logo-3d .cube-bottom { transform: rotateX(-90deg) translateZ(64px); }
@keyframes heroRotate {
  0% { transform: rotateX(-18deg) rotateY(0deg); }
  100% { transform: rotateX(-18deg) rotateY(360deg); }
}
@keyframes heroFloat {
  0%, 100% { margin-top: 0; }
  50% { margin-top: -14px; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-logo-3d .logo-cube-item { animation: none; }
}

/* Floating blobs */
.float-blob {
  position: absolute; border-radius: 50%; z-index: 1; pointer-events: none;
  filter: blur(60px); opacity: 0.5; animation: drift 12s ease-in-out infinite alternate;
}
.float-blob.b1 { width: 280px; height: 280px; background: var(--primary); top: 12%; left: 8%; }
.float-blob.b2 { width: 220px; height: 220px; background: var(--accent); bottom: 14%; right: 8%; animation-delay: -4s; }
.float-blob.b3 { width: 160px; height: 160px; background: #00E676; top: 55%; right: 30%; animation-delay: -8s; }
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(60px, -40px) scale(1.25); }
}

/* ============ FEATURE / TILT GRIDS ============ */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.6rem; max-width: 1200px; margin: 0 auto; }
.card-grid.wide { grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); }
.card-ico + h3 { font-size: 1.25rem; margin-bottom: 0.6rem; color: var(--text); }
.tilt-card p { color: var(--muted); font-size: 0.95rem; line-height: 1.7; }

/* ============ FORMS ============ */
.form-shell {
  max-width: 880px; margin: 0 auto; position: relative;
  background: var(--glass); backdrop-filter: blur(18px);
  border: 1px solid var(--border); border-radius: 24px;
  padding: clamp(1.6rem, 4vw, 3rem);
  box-shadow: var(--shadow);
}
.form-shell.wide { max-width: 1080px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.form-group { position: relative; margin-bottom: 1.5rem; }
.form-group.full { grid-column: 1 / -1; }

.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.95rem 1rem; font-size: 1rem; font-family: 'Poppins', sans-serif;
  color: var(--text); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 12px; outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft), 0 0 22px var(--primary-glow);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select option { background: var(--bg-2); color: var(--text); }
.form-group label {
  display: block; margin-bottom: 0.45rem; font-size: 0.82rem; font-weight: 600;
  color: var(--muted); letter-spacing: 0.6px; text-transform: uppercase;
}
.form-check { display: flex; align-items: center; gap: 0.6rem; color: var(--muted); font-size: 0.9rem; cursor: pointer; }
.form-check input { accent-color: var(--primary); width: 17px; height: 17px; }

.msg { padding: 0.8rem 1rem; border-radius: 10px; margin-bottom: 1.2rem; font-size: 0.9rem; display: none; }
.msg.error { display: block; background: rgba(255, 80, 70, 0.15); border: 1px solid rgba(255, 80, 70, 0.4); color: #ff9a92; }
.msg.ok { display: block; background: rgba(0, 230, 118, 0.1); border: 1px solid rgba(0, 230, 118, 0.35); color: var(--primary); }

.form-note { text-align: center; margin-top: 1.2rem; color: var(--muted); font-size: 0.9rem; }
.form-note a { color: var(--primary); font-weight: 600; }

/* ============ SELECTOR (notes / pyqs) ============ */
.selector-bar {
  display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
  max-width: 900px; margin: 0 auto 2rem;
}
.selector-bar select {
  flex: 1; min-width: 210px; padding: 0.9rem 1rem; font-family: 'Poppins', sans-serif;
  font-size: 0.95rem; color: #000; background: #fff;
  border: 1px solid var(--border); border-radius: 12px; outline: none; cursor: pointer;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.selector-bar select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.selector-bar select option { color: #000; background: #fff; }

.pdf-frame-wrap {
  position: relative; width: 100%; max-width: 760px; height: 130vh;
  min-height: 1100px; margin: 0 auto; border-radius: 18px; overflow: hidden;
  border: 1px solid var(--border); background: var(--surface);
}
@media (max-width: 620px) {
  .pdf-frame-wrap { max-width: 100%; height: 100vh; min-height: 640px; }
}
.pdf-frame-wrap iframe { width: 100%; height: 100%; border: none; }

/* ============ FAQ ============ */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: 14px; margin-bottom: 1rem; overflow: hidden;
  background: var(--surface); transition: border-color 0.3s;
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.2rem 1.4rem; font-weight: 600; font-size: 1rem; color: var(--text);
  background: none; border: none; text-align: left;
}
.faq-q i { color: var(--primary); transition: transform 0.35s; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a p { padding: 0 1.4rem 1.2rem; color: var(--muted); line-height: 1.7; }

/* ============ CHIPS ============ */
.chip-row { display: flex; flex-wrap: wrap; gap: 0.8rem; justify-content: center; }
.chip {
  padding: 0.75rem 1.4rem; border-radius: 40px; font-weight: 600; font-size: 0.95rem;
  color: var(--text); background: var(--surface); border: 1px solid var(--border);
  transition: all 0.3s; cursor: pointer; text-transform: capitalize;
}
.chip:hover { color: #04100c; background: var(--primary); border-color: var(--primary); box-shadow: 0 0 20px var(--primary-glow); }

/* ============ FOOTER ============ */
.footer {
  padding: 3.5rem clamp(1rem, 4vw, 3rem) 1.6rem;
  background: var(--glass); backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 2rem; max-width: 1200px; margin: 0 auto 2.5rem; }
.footer h3 { color: var(--primary); margin-bottom: 1rem; font-size: 1.05rem; }
.footer p, .footer ul li a { color: var(--muted); font-size: 0.9rem; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.5rem; }
.footer ul li a:hover { color: var(--primary); }
.socials { display: flex; gap: 0.8rem; margin-top: 1rem; }
.socials a {
  width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px;
  color: var(--muted); border: 1px solid var(--border); background: var(--surface);
  transition: all 0.3s;
}
.socials a:hover { color: #04100c; background: var(--primary); border-color: var(--primary); box-shadow: 0 0 18px var(--primary-glow); transform: translateY(-3px); }
.footer-bottom {
  text-align: center; color: var(--muted); font-size: 0.85rem;
  border-top: 1px solid var(--border); padding-top: 1.4rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
  .logo-icon-3d { width: 32px; height: 32px; }
  .logo-cube .cube-face { width: 32px; height: 32px; font-size: 12px; }
  .logo-cube .cube-front  { transform: rotateY(0deg) translateZ(16px); }
  .logo-cube .cube-back   { transform: rotateY(180deg) translateZ(16px); }
  .logo-cube .cube-top    { transform: rotateX(90deg) translateZ(16px); }
  .logo-cube .cube-bottom { transform: rotateX(-90deg) translateZ(16px); }
  .logo-text-3d .logo-bca, .logo-text-3d .logo-hub { font-size: 1rem; }
  .logo-text-3d .logo-ver { font-size: 0.72rem; }
  .nav-links {
    position: fixed; top: var(--nav-height); right: -100%; width: min(320px, 80vw); height: calc(100vh - var(--nav-height));
    flex-direction: column; justify-content: flex-start; gap: 0.4rem; padding: 1.6rem;
    background: var(--glass-strong); backdrop-filter: blur(18px);
    border-left: 1px solid var(--border); transition: right 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-links a { width: 100%; padding: 0.9rem 0.5rem; font-size: 1.05rem; }
  .burger { display: block; }
  .nav-cta { display: none; }
}

/* Page transition fade */
body.page-exit { opacity: 0; transition: opacity 0.45s ease; }

/* ============ AUTH PAGES (login / register) ============ */
.auth-bg-video {
  position: fixed; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -3;
  filter: brightness(0.55) saturate(1.15);
}
.auth-bg-overlay {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(0, 29, 32, 0.1), rgba(0, 29, 32, 0.82));
}
body.light .auth-bg-overlay {
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.15), rgba(238, 248, 242, 0.85));
}
.auth-page .navbar { background: rgba(0, 29, 32, 0.35); }
.auth-page .form-shell { background: var(--glass-strong); }

/* ============ FEATURES 4 + 2 GRID ============ */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; max-width: 1240px; margin: 0 auto; }
.features-grid .tilt-scene:nth-child(n+5) { grid-column: span 2; }
.feature-actions { position: relative; z-index: 10; transform: translateZ(0); }
.feature-actions a,
.feature-actions button { position: relative; z-index: 10; pointer-events: auto; }
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid .tilt-scene:nth-child(n+5) { grid-column: span 1; }
}
@media (max-width: 620px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ============ PORTFOLIO SECTION (about) ============ */
.portfolio-banner {
  max-width: 900px; margin: 0 auto 3rem; text-align: center;
  background: linear-gradient(135deg, var(--primary-soft), var(--surface));
  border: 1px solid var(--border); border-radius: 24px; padding: clamp(2rem, 5vw, 3.4rem);
  position: relative; overflow: hidden;
}
.portfolio-banner::before {
  content: ''; position: absolute; inset: -40%;
  background: radial-gradient(circle at 30% 30%, var(--primary-glow), transparent 55%);
  filter: blur(50px); opacity: 0.5; animation: pulse-glow 7s ease-in-out infinite;
}
.portfolio-banner > * { position: relative; z-index: 1; }
.portfolio-banner .pf-ico {
  width: 86px; height: 86px; margin: 0 auto 1.2rem; border-radius: 24px;
  display: grid; place-items: center; font-size: 2.2rem; color: #04100c;
  background: var(--primary); box-shadow: 0 0 34px var(--primary-glow);
  transform: rotateX(0deg); transition: transform 0.4s;
  animation: float3d 5s ease-in-out infinite;
}
.portfolio-banner h2 { font-size: clamp(1.5rem, 4vw, 2.4rem); margin-bottom: 0.7rem; }
.portfolio-banner p { color: var(--muted); max-width: 560px; margin: 0 auto 1.8rem; }

/* ============ PROMO POPUP (bottom corner toast) ============ */
.nexora-pop {
  position: fixed; bottom: 24px; z-index: 9999;
  width: min(360px, calc(100vw - 32px));
  opacity: 0; pointer-events: none;
  transform: translateY(24px); transition: opacity 0.35s ease, transform 0.35s ease;
}
.nexora-pop.right { right: 24px; }
.nexora-pop.left { left: 24px; }
.nexora-pop.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.nexora-card {
  position: relative;
  border-radius: 24px; overflow: hidden;
  background: linear-gradient(160deg, rgba(9,16,12,0.97), rgba(5,12,8,0.98));
  border: 2px solid rgba(0, 230, 118, 0.4);
  box-shadow: 0 0 0 1px rgba(57,245,154,0.2), 0 0 24px rgba(0,230,118,0.25), 0 0 50px rgba(0,230,118,0.12);
  text-align: center;
}
.nexora-card::before {
  content: ''; position: absolute; inset: -40%;
  background: radial-gradient(circle at 30% 20%, rgba(255,59,78,0.5), transparent 60%),
              radial-gradient(circle at 75% 80%, rgba(77,201,255,0.45), transparent 60%);
  filter: blur(45px); opacity: 0.55; animation: pulse-glow 6s ease-in-out infinite;
  pointer-events: none;
}
.nexora-inner { position: relative; z-index: 1; padding: 1.7rem 1.5rem 1.5rem; }
.nexora-close {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  width: 32px; height: 32px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(0,230,118,0.1); color: #39F59A; font-size: 1rem;
  border: 1px solid rgba(0,230,118,0.4);
  display: grid; place-items: center; transition: background 0.25s;
}
.nexora-close:hover { background: #00E676; color: #04100b; }
.nexora-logo {
  width: 76px; height: 76px; margin: 0 auto 1rem; border-radius: 22px;
  display: grid; place-items: center; font-size: 1.9rem; font-weight: 700;
  font-family: 'Orbitron', sans-serif; color: #fff;
  background: linear-gradient(135deg, #00E676, #00B85C);
  box-shadow: 0 0 26px rgba(0,230,118,0.45), 0 0 40px rgba(57,245,154,0.18);
  animation: float3d 5s ease-in-out infinite;
}
.nexora-card h3 {
  font-size: 1.5rem; margin-bottom: 0.5rem; letter-spacing: 0.05em;
  background: linear-gradient(90deg, #00E676, #39F59A);
  background-clip: text; -webkit-background-clip: text; color: transparent;
  -webkit-text-fill-color: transparent;
}
.nexora-card p { color: #cfead9; font-size: 0.95rem; margin: 0 auto 1.4rem; max-width: 320px; }
.nexora-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.7rem; border-radius: 50px; text-decoration: none;
  font-weight: 600; font-size: 0.95rem; color: #04100b;
  background: linear-gradient(135deg, #00E676, #00B85C);
  border: 1px solid rgba(57,245,154,0.45);
  box-shadow: 0 0 18px rgba(0,230,118,0.4);
  transition: transform 0.25s, box-shadow 0.25s;
}
.nexora-btn:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(0,230,118,0.6); }

/* ============ SPLASH SCREEN + RED "2.0" ============ */
.brand-2 { color: #ff3b3b; }
.splash-screen {
  position: fixed; inset: 0; z-index: 10000;
  display: grid; place-items: center;
  background: radial-gradient(circle at 50% 40%, #06110C, #040907);
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.splash-screen.hide { opacity: 0; visibility: hidden; }
.splash-inner { text-align: center; padding: 0 1.5rem; }
.splash-logo {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(2.4rem, 9vw, 5rem); letter-spacing: 0.06em;
  color: #fff; text-shadow: 0 0 40px var(--primary-glow);
  animation: splash-pop 1.2s ease-out both, pulse-glow 2.5s ease-in-out 1.2s infinite;
}
.splash-sub {
  margin-top: 1rem; font-size: clamp(0.8rem, 2.5vw, 1rem);
  color: var(--primary); letter-spacing: 0.3em; text-transform: uppercase;
  animation: splash-fade 1s ease-out 0.5s both;
}
.splash-bar {
  width: 180px; height: 3px; margin: 1.6rem auto 0; border-radius: 50px;
  background: rgba(255, 255, 255, 0.12); overflow: hidden;
}
.splash-bar span {
  display: block; height: 100%; width: 40%; border-radius: 50px;
  background: var(--primary); animation: splash-load 1.1s ease-in-out infinite;
}
@keyframes splash-pop {
  0% { opacity: 0; transform: scale(0.6); }
  60% { opacity: 1; transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes splash-fade {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes splash-load {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(320%); }
}

/* ============ CRASH + CODE-RAIN SPLASH (BCA HUB 2.0) ============ */
.splash-rain {
  position: absolute; inset: 0; width: 100%; height: 100%;
  opacity: 0.35; z-index: 0;
}
.splash-center { position: relative; z-index: 2; text-align: center; padding: 0 1.5rem; }
.splash-screen .splash-sub { animation: none; opacity: 0; }
.splash-screen .splash-sub.go { animation: splash-fade 0.7s ease 0.2s both; }

/* crash words */
.splash-crash { display: inline-flex; flex-direction: column; align-items: center; gap: 0.1em; }
.crash-row { display: inline-flex; align-items: baseline; gap: 0.35em; }
.crash-word {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(3.5rem, 16vw, 10rem); color: #fff;
  letter-spacing: 0.05em; text-shadow: 0 0 40px var(--primary-glow);
  opacity: 0; will-change: transform;
}
.crash-bca.go { animation: bca-in 0.85s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.crash-hub.go { animation: hub-in 0.85s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
@keyframes bca-in {
  0% { opacity: 0; transform: translateX(-75vw); }
  75% { opacity: 1; transform: translateX(3vw); }
  100% { opacity: 1; transform: translateX(0); }
}
@keyframes hub-in {
  0% { opacity: 0; transform: translateX(75vw); }
  75% { opacity: 1; transform: translateX(-3vw); }
  100% { opacity: 1; transform: translateX(0); }
}
.splash-center.impact .crash-word {
  animation: none; opacity: 1; transition: transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.splash-center.impact .crash-bca { transform: translateX(-0.4em); }
.splash-center.impact .crash-hub { transform: translateX(0.4em); }
.splash-center.impact { animation: shake 1s ease; }
@keyframes shake {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-9px, 4px); }
  20% { transform: translate(8px, -5px); }
  30% { transform: translate(-7px, 3px); }
  40% { transform: translate(6px, -4px); }
  50% { transform: translate(-5px, 2px); }
  60% { transform: translate(4px, -3px); }
  70% { transform: translate(-3px, 2px); }
  80% { transform: translate(2px, -1px); }
}

/* red 2.0 drops in */
.splash-v20 {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(3.5rem, 16vw, 10rem); color: #ff3b3b;
  text-shadow: 0 0 40px rgba(255, 59, 59, 0.4);
  opacity: 0; will-change: transform;
}
.splash-v20.go { animation: v20-in 0.55s cubic-bezier(0.2, 0.9, 0.3, 1.3) 0.1s both; }
@keyframes v20-in {
  0% { opacity: 0; transform: translateY(-80px) scale(0.4); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* impact flash + shockwave */
.splash-flash {
  position: absolute; inset: 0; z-index: 5; pointer-events: none;
  background: radial-gradient(circle at 50% 50%, #fff, #d7fff0 45%, transparent 75%);
  opacity: 0;
}
.splash-flash.go { animation: flash-boom 1.2s ease; }
@keyframes flash-boom {
  0% { opacity: 0; }
  20% { opacity: 0.95; }
  40% { opacity: 0.4; }
  60% { opacity: 0.7; }
  100% { opacity: 0; }
}
.splash-ring {
  position: absolute; left: 50%; top: 50%; z-index: 4;
  width: 220px; height: 220px; margin: -110px 0 0 -110px;
  border: 4px solid var(--primary); border-radius: 50%;
  opacity: 0; pointer-events: none;
  box-shadow: 0 0 40px var(--primary-glow), inset 0 0 40px var(--primary-glow);
}
.splash-ring.go { animation: ring-boom 2s ease-out; }
@keyframes ring-boom {
  0% { opacity: 0.95; transform: scale(0.3); }
  60% { opacity: 0.5; }
  100% { opacity: 0; transform: scale(3.5); }
}

/* katana-style cut sweep */
.splash-slash {
  position: absolute; left: 50%; top: 50%; z-index: 6;
  width: 0; height: 6px; pointer-events: none;
  background: linear-gradient(90deg, transparent, #fff 25%, var(--primary) 50%, #fff 75%, transparent);
  box-shadow: 0 0 30px var(--primary), 0 0 80px rgba(255, 255, 255, 0.8);
  transform: translate(-50%, -50%) rotate(-42deg);
  border-radius: 50px; opacity: 0;
}
.splash-slash.go { animation: slash-cut 0.5s ease-out; }
@keyframes slash-cut {
  0% { width: 0; opacity: 1; }
  60% { width: 130%; opacity: 1; }
  100% { width: 140%; opacity: 0; }
}

/* post-login rain intro title */
.rain-title {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(3rem, 12vw, 7rem); letter-spacing: 0.06em;
  color: #fff; text-shadow: 0 0 40px var(--primary-glow);
  animation: splash-pop 1s ease-out both, pulse-glow 2.2s ease-in-out 1s infinite;
}

/* ============ HOLO INTRO (neon gateway after login) ============ */
.holo-center { display: flex; flex-direction: column; align-items: center; gap: 0.8rem; }

/* expanding neon rings */
.holo-ring {
  position: absolute; left: 50%; top: 50%; z-index: 2;
  width: 60px; height: 60px; margin: -30px 0 0 -30px;
  border: 2px solid var(--primary); border-radius: 50%;
  opacity: 0; pointer-events: none;
  box-shadow: 0 0 20px var(--primary-glow), inset 0 0 20px var(--primary-glow), 0 0 60px var(--primary-glow);
}
.holo-ring.go { animation: ring-expand 1.4s cubic-bezier(0.2, 0.8, 0.3, 1) forwards; }
.holo-ring-2.go { animation: ring-expand 1.4s cubic-bezier(0.2, 0.8, 0.3, 1) 0.3s forwards; border-color: #00E676; box-shadow: 0 0 20px rgba(0,230,118,0.35), inset 0 0 20px rgba(0,230,118,0.35), 0 0 60px rgba(0,230,118,0.2); }
@keyframes ring-expand {
  0% { opacity: 0.9; transform: scale(0.2); }
  50% { opacity: 0.7; }
  100% { opacity: 0; transform: scale(8); }
}

/* blue neon glow backdrop */
.holo-glow {
  position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0, 230, 118, 0.22) 0%, rgba(57, 245, 154, 0.08) 30%, transparent 65%);
}
.holo-glow.go { animation: holo-pulse 2.5s ease-in-out forwards; }
@keyframes holo-pulse {
  0% { opacity: 0; }
  30% { opacity: 1; }
  100% { opacity: 0.3; }
}

/* holographic text */
.holo-title { display: flex; flex-direction: column; align-items: center; gap: 0.15em; position: relative; z-index: 3; }
.holo-logo { display: inline-flex; align-items: baseline; gap: 0.3em; position: relative; z-index: 3; }
.holo-word {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(3.5rem, 16vw, 10rem); color: #fff;
  text-shadow: 0 0 40px rgba(0, 230, 118, 0.5), 0 0 80px rgba(57, 245, 154, 0.2);
  opacity: 0; will-change: transform, filter;
}

/* BCA: holographic materialize */
.holo-bca.go { animation: holo-materialize 0.65s cubic-bezier(0.2, 0.9, 0.3, 1.1) both; }
@keyframes holo-materialize {
  0% { opacity: 0; transform: scale(0.3); filter: blur(12px) hue-rotate(180deg) brightness(3); }
  40% { opacity: 0.8; transform: scale(1.08); filter: blur(3px) hue-rotate(90deg) brightness(2); }
  100% { opacity: 1; transform: scale(1); filter: blur(0) hue-rotate(0deg) brightness(1); }
}

/* HUB: slide in from right with electric trail */
.holo-hub.go { animation: holo-slide 0.55s cubic-bezier(0.2, 0.9, 0.3, 1.15) both; }
@keyframes holo-slide {
  0% { opacity: 0; transform: translateX(80px); filter: blur(6px) brightness(2.5); }
  100% { opacity: 1; transform: translateX(0); filter: blur(0) brightness(1); }
}

/* 2.0: electric pulse in (below BCA HUB) */
.holo-v2 {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(1.6rem, 6vw, 3.5rem); color: #ff3b3b;
  text-shadow: 0 0 30px rgba(255, 59, 59, 0.6), 0 0 60px rgba(0, 230, 118, 0.25);
  opacity: 0; will-change: transform; line-height: 1;
}
.holo-v2.go { animation: holo-pulse-in 0.6s cubic-bezier(0.2, 0.9, 0.3, 1.3) both; }
@keyframes holo-pulse-in {
  0% { opacity: 0; transform: scale(1.6); filter: blur(8px) brightness(4); }
  50% { opacity: 1; transform: scale(0.92); filter: blur(1px) brightness(2); }
  100% { opacity: 1; transform: scale(1); filter: blur(0) brightness(1); }
}

/* Welcome Back */
.holo-welcome {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(1.3rem, 4.2vw, 2.6rem);
  letter-spacing: 0.3em; text-transform: uppercase;
  color: #fff; text-shadow: 0 0 24px rgba(0, 230, 118, 0.5), 0 0 60px rgba(57, 245, 154, 0.2);
  opacity: 0; position: relative; z-index: 3;
}
.holo-welcome.go { animation: holo-fade-up 0.7s ease both; }

/* Access Granted subtitle */
.holo-sub {
  font-family: 'Poppins', sans-serif; font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--primary); opacity: 0; position: relative; z-index: 3;
}
.holo-sub.go { animation: holo-fade-up 0.6s ease both; }

@keyframes holo-fade-up {
  0% { opacity: 0; transform: translateY(-16px); filter: blur(4px); }
  100% { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* katana blade sweep */
.katana-blade {
  position: absolute; left: 50%; top: 50%; z-index: 3;
  width: 0; height: 9px; pointer-events: none;
  background: linear-gradient(90deg, transparent 0%, #9fb4c8 12%, #e8f0ff 22%, #ffffff 40%, #ffd9d9 50%, #ffffff 60%, #e8f0ff 78%, transparent 100%);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.95), 0 0 90px rgba(255, 80, 60, 0.6), 0 3px 16px rgba(255, 255, 255, 0.75);
  transform: translate(-50%, -50%) rotate(-45deg);
  border-radius: 50px; opacity: 0;
}
.katana-blade.go { animation: katana-sweep 0.6s cubic-bezier(0.4, 0, 0.6, 1) forwards; }
@keyframes katana-sweep {
  0% { width: 0; opacity: 1; }
  70% { width: 140%; opacity: 1; }
  100% { width: 150%; opacity: 0; }
}

/* REVERSE katana blade (bottom-left → top-right) */
.katana-blade-rev {
  position: absolute; left: 50%; top: 50%; z-index: 3;
  width: 0; height: 9px; pointer-events: none;
  background: linear-gradient(90deg, transparent 0%, #9fb4c8 12%, #e8f0ff 22%, #ffffff 40%, #ffd9d9 50%, #ffffff 60%, #e8f0ff 78%, transparent 100%);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.95), 0 0 90px rgba(255, 80, 60, 0.6), 0 3px 16px rgba(255, 255, 255, 0.75);
  transform: translate(-50%, -50%) rotate(45deg);
  border-radius: 50px; opacity: 0;
}
.katana-blade-rev.go { animation: katana-sweep-rev 0.6s cubic-bezier(0.4, 0, 0.6, 1) forwards; }
@keyframes katana-sweep-rev {
  0% { width: 0; opacity: 1; }
  70% { width: 140%; opacity: 1; }
  100% { width: 150%; opacity: 0; }
}

/* ============ GLITCH-OUT: text cut by katana ============ */
.crash-row.glitch-out,
.splash-v20.glitch-out,
.splash-sub.glitch-out {
  animation: glitch-out 1s ease forwards;
}
@keyframes glitch-out {
  0%   { opacity: 1; transform: translateX(0); filter: none; }
  8%   { opacity: 1; transform: translateX(-10px) skewX(-5deg); filter: hue-rotate(90deg) brightness(2); }
  16%  { opacity: 0.8; transform: translateX(14px) skewX(8deg); filter: none; }
  24%  { opacity: 1; transform: translateX(-6px); clip-path: inset(15% 0 35% 0); }
  32%  { opacity: 0.6; transform: translateX(10px); clip-path: inset(55% 0 10% 0); }
  40%  { opacity: 0.9; transform: translateX(-4px); clip-path: none; }
  50%  { opacity: 0.4; transform: translateX(6px) skewX(4deg); filter: hue-rotate(45deg); }
  65%  { opacity: 0.2; transform: translateX(-3px); filter: blur(1px); }
  80%  { opacity: 0.08; transform: translateX(2px); filter: blur(3px); }
  100% { opacity: 0; transform: translateX(0) scale(0.85); filter: blur(6px); }
}

/* fire + blood particle canvas */
.splash-fx {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 4; pointer-events: none;
}

/* ============ CRASH SPLASH: lightning + cloud ============ */
.splash-lightning {
  position: absolute; inset: 0; z-index: 7; pointer-events: none;
  background: rgba(180, 200, 255, 0); opacity: 0;
}
.splash-lightning.go {
  opacity: 1;
  animation: lightning-flash 1.8s linear forwards;
}
.splash-lightning.go::before,
.splash-lightning.go::after {
  content: ''; position: absolute;
  filter: blur(2px);
}
/* primary bolt - slightly right of center, tilted left */
.splash-lightning.go::before {
  left: 52%; top: 0;
  width: 4px; height: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(180,210,255,0.5) 60%, transparent 100%);
  transform: translateX(-50%) rotate(-7deg);
  animation: bolt-main 1.8s linear forwards;
}
/* secondary bolt - left of center, tilted right */
.splash-lightning.go::after {
  left: 44%; top: 0;
  width: 3px; height: 0;
  background: linear-gradient(180deg, rgba(220,230,255,0.8) 0%, rgba(180,200,255,0.3) 50%, transparent 100%);
  transform: translateX(-50%) rotate(5deg);
  animation: bolt-secondary 1.8s linear forwards;
}
@keyframes lightning-flash {
  0%   { background: rgba(180,200,255,0); }
  4%   { background: rgba(180,200,255,0.9); }
  9%   { background: rgba(180,200,255,0.05); }
  14%  { background: rgba(180,200,255,0.65); }
  20%  { background: rgba(180,200,255,0.02); }
  28%  { background: rgba(180,200,255,0.35); }
  35%  { background: rgba(180,200,255,0.02); }
  48%  { background: rgba(180,200,255,0.12); }
  65%  { background: rgba(180,200,255,0.04); }
  100% { background: rgba(180,200,255,0); }
}
@keyframes bolt-main {
  0%   { height: 0; opacity: 0; }
  4%   { height: 70%; opacity: 1; }
  10%  { height: 70%; opacity: 0; }
  14%  { height: 60%; opacity: 0.8; }
  20%  { height: 60%; opacity: 0; }
  28%  { height: 50%; opacity: 0.45; }
  36%  { height: 50%; opacity: 0; }
  100% { height: 50%; opacity: 0; }
}
@keyframes bolt-secondary {
  0%   { height: 0; opacity: 0; }
  5%   { height: 55%; opacity: 0.7; }
  12%  { height: 55%; opacity: 0; }
  18%  { height: 45%; opacity: 0.5; }
  24%  { height: 45%; opacity: 0; }
  32%  { height: 35%; opacity: 0.25; }
  42%  { height: 35%; opacity: 0; }
  100% { height: 35%; opacity: 0; }
}
.splash-cloud {
  position: absolute; bottom: 0; left: -5%; right: -5%; height: 32%;
  z-index: 1; pointer-events: none; opacity: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(0,18,10,0.9) 0%, rgba(0,25,15,0.4) 50%, transparent 75%);
}
.splash-cloud.go { animation: cloud-in 1.2s ease-out forwards, cloud-drift 8s ease-in-out 1.2s infinite alternate; }
@keyframes cloud-in { from { opacity: 0; } to { opacity: 0.65; } }
@keyframes cloud-drift { 0% { transform: translateX(-2%); } 100% { transform: translateX(2%); } }

/* ============ WELCOME HERO: fierce 2.0 + danger + embers ============ */
.hero-fx {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 1; pointer-events: none; opacity: 0.6;
}
.hero-version {
  display: block; font-size: 0.62em; letter-spacing: 0.12em;
  color: #FF3B3B;
  text-shadow: 0 0 14px rgba(255,59,59,0.55), 0 0 30px rgba(255,59,59,0.3);
  animation: fire-20 2s ease-in-out infinite;
  margin-top: 0.05em;
}
@keyframes fire-20 {
  0%, 100% {
    text-shadow: 0 0 14px rgba(255,59,59,0.55), 0 0 30px rgba(255,59,59,0.3);
    transform: scale(1);
  }
  50% {
    text-shadow: 0 0 20px rgba(255,59,59,0.75), 0 0 42px rgba(255,59,59,0.45);
    transform: scale(1.04);
  }
}
.danger-vignette::after {
  content: ''; position: absolute; inset: 0; pointer-events: none; z-index: 3;
  box-shadow: inset 0 0 120px rgba(0, 90, 50, 0.35), inset 0 0 240px rgba(0, 40, 25, 0.3);
  animation: danger-pulse 3s ease-in-out infinite;
}
@keyframes danger-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ============ FEEDBACK CENTER POPUP ============ */
.feedback-popup-overlay {
  position: fixed; inset: 0; z-index: 99998;
  background: rgba(2, 8, 5, 0.8); backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.feedback-popup-overlay.show { opacity: 1; visibility: visible; }
.feedback-popup {
  position: relative;
  width: min(430px, calc(100vw - 32px));
  background: linear-gradient(170deg, rgba(10, 30, 18, 0.97), rgba(5, 18, 10, 0.98));
  border: 1px solid rgba(0, 230, 118, 0.35);
  border-radius: 22px; padding: 2.4rem 2rem 2rem; text-align: center;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25), 0 0 45px rgba(0, 230, 118, 0.16), 0 26px 70px rgba(0, 0, 0, 0.6);
  animation: pop-neon 0.45s cubic-bezier(0.2, 0.9, 0.3, 1.18) both;
}
@keyframes pop-neon {
  0% { opacity: 0; transform: scale(0.82) translateY(24px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
/* 3-second lock: X and "Maybe Later" stay disabled until the bar fills */
.fb-timer {
  position: absolute; top: 10px; left: 14px; width: calc(100% - 28px);
  height: 2px; border-radius: 999px; z-index: 2; overflow: hidden;
  background: rgba(0, 230, 118, 0.18);
  transform-origin: left; transform: scaleX(0);
  animation: fbTimer 3s linear forwards;
}
.fb-timer::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, #00E676, #39F59A);
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.7);
}
@keyframes fbTimer { to { transform: scaleX(1); } }
.feedback-popup-overlay.fb-ready .fb-timer { opacity: 0; }
.feedback-popup::before {
  content: ''; position: absolute; inset: -35%;
  background: radial-gradient(circle at 25% 20%, rgba(0, 230, 118, 0.18), transparent 55%),
              radial-gradient(circle at 80% 85%, rgba(57, 245, 154, 0.13), transparent 55%);
  filter: blur(50px); opacity: 0.6; pointer-events: none;
}
.feedback-popup::after {
  content: ''; position: absolute; inset: 0; border-radius: 22px; padding: 1px;
  background: linear-gradient(135deg, rgba(0, 230, 118, 0.75), rgba(57, 245, 154, 0.22), rgba(0, 230, 118, 0.75));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none; animation: borderFlow 6s linear infinite;
}
@keyframes borderFlow {
  0% { filter: hue-rotate(0deg); }
  100% { filter: hue-rotate(360deg); }
}
.feedback-popup > * { position: relative; z-index: 1; }
.feedback-popup .fb-icon {
  width: 68px; height: 68px; margin: 0 auto 1.1rem; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.7rem;
  background: radial-gradient(circle at 30% 30%, rgba(0, 230, 118, 0.3), rgba(4, 9, 7, 0.6));
  border: 1px solid rgba(0, 230, 118, 0.5);
  color: #39F59A; text-shadow: 0 0 14px rgba(0, 230, 118, 0.65);
  box-shadow: 0 0 18px rgba(0, 230, 118, 0.3), inset 0 0 14px rgba(0, 230, 118, 0.16);
}
.feedback-popup h3 {
  font-size: 1.3rem; margin-bottom: 0.7rem;
  background: linear-gradient(90deg, #39F59A, #00E676);
  background-clip: text; -webkit-background-clip: text; color: transparent;
  -webkit-text-fill-color: transparent;
  text-shadow: none; letter-spacing: 0.3px;
}
.feedback-popup p { color: #c9e8d6; font-size: 0.92rem; line-height: 1.65; margin-bottom: 1.4rem; }
.feedback-popup .fb-actions { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }
.feedback-popup .fb-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.6rem; border-radius: 50px; font-weight: 600; font-size: 0.9rem;
  text-decoration: none; transition: transform 0.3s, box-shadow 0.3s, opacity 0.3s;
  cursor: pointer; border: 1px solid transparent; color: inherit;
}
.feedback-popup .fb-btn:disabled { cursor: not-allowed; opacity: 0.45; }
.feedback-popup .fb-btn.primary {
  color: #04100b;
  background: linear-gradient(135deg, #00E676, #00b85c);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 0 18px rgba(0, 230, 118, 0.4);
}
.feedback-popup .fb-btn.primary:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 0 30px rgba(0, 230, 118, 0.6);
}
.feedback-popup .fb-btn.ghost {
  color: #39F59A; background: rgba(0, 230, 118, 0.08);
  border-color: rgba(0, 230, 118, 0.4);
}
.feedback-popup .fb-btn.ghost:hover { color: #04100b; background: rgba(0, 230, 118, 0.9); }
.feedback-popup .fb-close {
  position: absolute; top: 12px; right: 14px;
  width: 32px; height: 32px; border-radius: 50%; border: 1px solid rgba(0, 230, 118, 0.4); cursor: pointer;
  background: rgba(4, 9, 7, 0.6); color: #39F59A; font-size: 0.95rem;
  display: grid; place-items: center; z-index: 2;
  transition: background 0.25s, opacity 0.3s;
}
.feedback-popup .fb-close:disabled { cursor: not-allowed; opacity: 0.35; }
.feedback-popup .fb-close:hover:not(:disabled) { background: #00E676; color: #04100b; }

/* ============ BROKEN GLASS OVERLAY ============ */
.broken-glass {
  position: absolute; inset: 0; z-index: 6; pointer-events: none; opacity: 0;
  transition: opacity 0.3s;
}
.broken-glass.go { opacity: 1; }
.broken-glass::before {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(137deg, transparent 40%, rgba(255,255,255,0.04) 40.5%, rgba(255,255,255,0.04) 41%, transparent 41.5%),
    linear-gradient(217deg, transparent 55%, rgba(255,255,255,0.03) 55.5%, rgba(255,255,255,0.03) 56%, transparent 56.5%),
    linear-gradient(47deg, transparent 30%, rgba(255,255,255,0.05) 30.5%, rgba(255,255,255,0.05) 31%, transparent 31.5%),
    linear-gradient(172deg, transparent 65%, rgba(255,255,255,0.03) 65.5%, rgba(255,255,255,0.03) 66%, transparent 66.5%),
    linear-gradient(97deg, transparent 45%, rgba(255,255,255,0.04) 45.5%, rgba(255,255,255,0.04) 46%, transparent 46.5%),
    linear-gradient(260deg, transparent 20%, rgba(255,255,255,0.03) 20.5%, rgba(255,255,255,0.03) 21%, transparent 21.5%);
  animation: crack-shimmer 3s ease-in-out infinite alternate;
}
.broken-glass::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 52% 48%, transparent 30%, rgba(255,255,255,0.015) 31%, transparent 32%),
    radial-gradient(circle at 30% 60%, transparent 25%, rgba(255,255,255,0.02) 26%, transparent 27%),
    radial-gradient(circle at 70% 35%, transparent 20%, rgba(255,255,255,0.015) 21%, transparent 22%);
}
@keyframes crack-shimmer {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ============ FEATURE PAGE ============ */
.feature-hero {
  min-height: 50vh; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: calc(var(--nav-height) + 3rem) 1.5rem 3rem;
  position: relative; overflow: hidden;
}
.feature-hero::before {
  content: ''; position: absolute; inset: -30%;
  background: radial-gradient(circle at 50% 50%, var(--primary-glow), transparent 45%);
  filter: blur(70px); opacity: 0.45;
}
.feature-hero-inner { position: relative; z-index: 2; max-width: 800px; }
.feature-hero-inner .card-ico { width: 90px; height: 90px; font-size: 2.4rem; margin: 0 auto 1.5rem; }
.feature-hero-inner h1 {
  font-size: clamp(2rem, 6vw, 3.5rem); margin-bottom: 1rem;
}
.feature-hero-inner p { color: var(--muted); font-size: clamp(1rem, 2vw, 1.2rem); max-width: 600px; margin: 0 auto; }
.feature-body {
  max-width: 860px; margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem) clamp(3rem, 6vw, 5rem);
}
.feature-body .fb-section {
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  padding: 2rem; margin-bottom: 1.5rem;
}
.feature-body .fb-section h3 {
  font-size: 1.2rem; color: var(--primary); margin-bottom: 0.8rem;
}
.feature-body .fb-section p, .feature-body .fb-section li {
  color: var(--muted); font-size: 0.95rem; line-height: 1.75;
}
.feature-body .fb-section ul { list-style: none; padding: 0; }
.feature-body .fb-section ul li { padding: 0.3rem 0; padding-left: 1.4rem; position: relative; }
.feature-body .fb-section ul li::before {
  content: ''; position: absolute; left: 0; top: 0.75rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--primary); box-shadow: 0 0 8px var(--primary-glow);
}
.feature-back {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1.6rem; border-radius: 50px; font-weight: 600; font-size: 0.9rem;
  color: var(--primary); border: 1px solid var(--border);
  background: var(--surface); margin-bottom: 2rem;
  transition: all 0.3s; text-decoration: none;
  cursor: pointer; position: relative; z-index: 10;
}
.feature-back:hover { border-color: var(--primary); box-shadow: 0 0 16px var(--primary-glow); }

/* ============ MOBILE RESPONSIVE: popups + hero + footer ============ */
@media (max-width: 620px) {
  .hero-title { animation: none; transform: none; font-size: clamp(2rem, 8vw, 3.5rem); }
  .hero-version { font-size: 1em; }
  .hero-logo-3d { width: 92px; height: 92px; }
  .hero-logo-3d .cube-face { font-size: 1.5rem; }
  .hero-logo-3d .cube-front  { transform: rotateY(0deg) translateZ(46px); }
  .hero-logo-3d .cube-back   { transform: rotateY(180deg) translateZ(46px); }
  .hero-logo-3d .cube-right  { transform: rotateY(90deg) translateZ(46px); }
  .hero-logo-3d .cube-left   { transform: rotateY(-90deg) translateZ(46px); }
  .hero-logo-3d .cube-top    { transform: rotateX(90deg) translateZ(46px); }
  .hero-logo-3d .cube-bottom { transform: rotateX(-90deg) translateZ(46px); }
  .nexora-pop {
    width: min(280px, calc(100vw - 24px)); bottom: 14px; right: 12px !important;
  }
  .nexora-inner { padding: 1.1rem 0.9rem; }
  .nexora-logo { width: 50px; height: 50px; font-size: 1.3rem; border-radius: 14px; margin-bottom: 0.7rem; }
  .nexora-card h3 { font-size: 1rem; }
  .nexora-card p { font-size: 0.8rem; margin-bottom: 1rem; }
  .nexora-btn { padding: 0.55rem 1.1rem; font-size: 0.8rem; }
  .nexora-close { width: 26px; height: 26px; font-size: 0.8rem; top: 8px; right: 8px; }

  /* footer */
  .footer { padding: 2.5rem 1rem 1.2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; text-align: center; }
  .footer h3 { font-size: 0.95rem; margin-bottom: 0.7rem; }
  .footer p, .footer ul li a { font-size: 0.82rem; line-height: 1.6; }
  .footer ul li { margin-bottom: 0.4rem; }
  .socials { justify-content: center; gap: 0.6rem; margin-top: 0.8rem; }
  .socials a { width: 36px; height: 36px; font-size: 0.9rem; border-radius: 10px; }
  .footer-bottom { font-size: 0.78rem; padding-top: 1rem; }

  /* mobile nav: show CTA/logout + fix burger menu */
  .nav-cta { display: inline-flex !important; font-size: 0.8rem; padding: 0.4rem 1rem; }
  .nav-links { padding-bottom: 5rem; }
  .nav-links .mobile-logout {
    display: block; width: 100%; padding: 0.9rem 0.5rem; margin-top: 0.5rem;
    font-size: 1.05rem; font-weight: 600; color: #ff5555; text-align: center;
    border-top: 1px solid var(--border); cursor: pointer; background: none; border-left: none; border-right: none; border-bottom: none;
  }
  .nav-links .mobile-logout:hover { color: #ff8888; }
}