/* ============================================
   SOLAR 303 — THE ACID MACHINE
   HUD VFX Landing Page
   ============================================ */

:root {
  --bg:          #020408;
  --bg-card:     #060d18;
  --bg-surface:  #0a1220;
  --orange:      #ff9900;
  --orange-hot:  #ff6000;
  --orange-dim:  rgba(255, 153, 0, 0.12);
  --orange-glow: rgba(255, 153, 0, 0.4);
  --cyan:        #00e5ff;
  --cyan-dim:    rgba(0, 229, 255, 0.12);
  --cyan-glow:   rgba(0, 229, 255, 0.4);
  --green:       #00ff44;
  --text:        #ddd8cc;
  --text-dim:    #6a6055;
  --border:      rgba(255, 153, 0, 0.15);
  --border-cyan: rgba(0, 229, 255, 0.2);
  --font-t: 'Orbitron', monospace;
  --font-m: 'Share Tech Mono', monospace;
  --font-b: 'Rajdhani', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-b);
  overflow-x: hidden;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ============================================
   BACKGROUND CANVAS
   ============================================ */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

section { position: relative; z-index: 2; }

/* ============================================
   SCROLL REVEAL
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================
   SECTION HEADER
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-m);
  font-size: 0.65rem;
  letter-spacing: 0.5em;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-t);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--orange);
  text-shadow: 0 0 15px var(--orange-glow), 0 0 50px rgba(255,153,0,0.15);
  margin-bottom: 0.75rem;
}

.section-sub {
  font-family: var(--font-m);
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 3rem;
  background: rgba(2, 4, 8, 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s;
}
.navbar.scrolled { padding: 0.7rem 3rem; }

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-t);
  font-weight: 900;
}
.logo-hex {
  font-size: 1.6rem;
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-glow);
  animation: hexPulse 3s ease-in-out infinite;
}
@keyframes hexPulse {
  0%,100% { text-shadow: 0 0 12px var(--cyan-glow); }
  50%      { text-shadow: 0 0 24px var(--cyan-glow), 0 0 48px rgba(0,229,255,0.3); }
}
.logo-solar {
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  background: linear-gradient(90deg, var(--orange), var(--orange-hot));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-303 {
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-links a {
  font-family: var(--font-t);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  transition: color 0.3s, text-shadow 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--orange);
  box-shadow: 0 0 6px var(--orange);
  transition: width 0.3s;
}
.nav-links a:hover { color: var(--orange); }
.nav-links a:hover::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 1px;
  background: var(--orange);
  transition: all 0.3s;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 999;
  background: rgba(2,4,8,0.97);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-t);
  font-size: 1.2rem;
  letter-spacing: 0.3em;
  color: var(--orange);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  z-index: 1;
}

/* HUD RINGS */
.hud-rings {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
}

.hud-ring {
  position: absolute;
  border-radius: 50%;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.r1 {
  width: 160px; height: 160px;
  border: 1px solid rgba(0,229,255,0.5);
  animation: spinCW 8s linear infinite;
  box-shadow: 0 0 12px rgba(0,229,255,0.2), inset 0 0 12px rgba(0,229,255,0.05);
}
.r1::before {
  content: '';
  position: absolute;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  top: -5px; left: 50%;
  transform: translateX(-50%);
}

.r2 {
  width: 300px; height: 300px;
  border: 1px solid rgba(255,153,0,0.35);
  border-style: dashed;
  animation: spinCCW 15s linear infinite;
}
.r2::before {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px var(--orange);
  top: -4px; left: 50%;
  transform: translateX(-50%);
}

.r3 {
  width: 480px; height: 480px;
  border: 1px solid rgba(0,229,255,0.18);
  animation: spinCW 25s linear infinite;
}
.r3::before {
  content: '';
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  bottom: -3px; left: 50%;
  transform: translateX(-50%);
}

.r4 {
  width: 700px; height: 700px;
  border: 1px solid rgba(255,153,0,0.08);
  animation: spinCCW 40s linear infinite;
}

@keyframes spinCW  { to { transform: translate(-50%,-50%) rotate(360deg);  } }
@keyframes spinCCW { to { transform: translate(-50%,-50%) rotate(-360deg); } }

/* Crosshair */
.hud-crosshair {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
}
.ch-h {
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 1px;
  background: rgba(0,229,255,0.4);
  transform: translateY(-50%);
}
.ch-v {
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 100%;
  background: rgba(0,229,255,0.4);
  transform: translateX(-50%);
}
.ch-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan), 0 0 40px rgba(0,229,255,0.4);
  animation: corePulse 2s ease-in-out infinite;
}
@keyframes corePulse {
  0%,100% { transform: translate(-50%,-50%) scale(1); opacity: 1; }
  50%      { transform: translate(-50%,-50%) scale(1.5); opacity: 0.6; }
}

/* HUD DATA PANELS */
.hud-data {
  position: absolute;
  font-family: var(--font-m);
  font-size: 0.6rem;
  color: rgba(0,229,255,0.5);
  letter-spacing: 0.1em;
  pointer-events: none;
  animation: hudFloat 6s ease-in-out infinite;
  z-index: 1;
}
.hd-label {
  font-size: 0.5rem;
  letter-spacing: 0.3em;
  color: rgba(0,229,255,0.3);
  text-transform: uppercase;
  margin-bottom: 3px;
}
.hd-val {
  color: rgba(0,229,255,0.7);
  font-size: 0.65rem;
  margin-bottom: 2px;
}
.hd-val.sm { font-size: 0.55rem; color: rgba(0,229,255,0.45); }
.hd-line {
  width: 60px; height: 1px;
  background: linear-gradient(90deg, rgba(0,229,255,0.4), transparent);
  margin: 5px 0;
}
@keyframes hudFloat {
  0%,100% { transform: translateY(0); opacity: 0.8; }
  50%      { transform: translateY(-8px); opacity: 1; }
}
.hd-1 { top: 22%; left:  5%; animation-delay: 0s; }
.hd-2 { top: 28%; right: 5%; animation-delay: 1.5s; }
.hd-3 { bottom: 28%; left: 7%; animation-delay: 3s; }
.hd-4 { bottom: 22%; right: 6%; animation-delay: 4.5s; }

/* RISING NEON WORDS COLUMN */
.neon-words-col {
  position: absolute;
  left: 5%;
  top: 0;
  bottom: 0;
  width: 120px;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
  mask-image: linear-gradient(to top, transparent 0%, black 20%, black 80%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, transparent 0%, black 20%, black 80%, transparent 100%);
}
.neon-words-track {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  animation: wordsRise 22s linear infinite;
  padding-top: 100%;
}
.neon-words-track span {
  font-family: var(--font-m);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow), 0 0 20px rgba(0,229,255,0.3);
  white-space: nowrap;
  opacity: 0.75;
}
@keyframes wordsRise {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}
@media (max-width: 768px) {
  .neon-words-col { display: none; }
}

/* HERO CONTENT */
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 7rem 2rem 2rem;
}

.hero-label {
  font-family: var(--font-m);
  font-size: 0.65rem;
  letter-spacing: 0.6em;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
  margin-bottom: 1.5rem;
  animation: fadeUp 1s ease 0.2s both;
}

.hero-title {
  font-family: var(--font-t);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 1rem;
  animation: fadeUp 1s ease 0.4s both;
}
.ht-solar {
  display: block;
  font-size: clamp(4rem, 13vw, 10rem);
  letter-spacing: 0.15em;
  background: linear-gradient(135deg, var(--orange), var(--orange-hot), #ffcc00, var(--orange));
  background-size: 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleShimmer 4s ease-in-out infinite;
  filter: drop-shadow(0 0 30px rgba(255,153,0,0.3));
}
@keyframes titleShimmer {
  0%,100% { background-position: 0%; }
  50%      { background-position: 200%; }
}
.ht-303 {
  display: block;
  font-size: clamp(2rem, 6vw, 4.5rem);
  letter-spacing: 0.5em;
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan-glow), 0 0 60px rgba(0,229,255,0.2);
}

.hero-tagline {
  font-family: var(--font-t);
  font-size: clamp(0.6rem, 1.5vw, 0.9rem);
  letter-spacing: 0.6em;
  color: rgba(255,153,0,0.5);
  margin-bottom: 3rem;
  animation: fadeUp 1s ease 0.6s both;
}

.hero-btns {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp 1s ease 0.8s both;
}

.btn-acid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  padding: 1rem 2.8rem;
  font-family: var(--font-t);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  color: #000;
  background: linear-gradient(180deg,
    #ffcc44 0%,
    #ff9900 35%,
    #e07000 65%,
    #c05500 100%
  );
  border: none;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  box-shadow:
    0 1px 0 rgba(255,255,180,0.7) inset,
    0 -2px 0 rgba(0,0,0,0.5) inset,
    2px 0 0 rgba(255,200,80,0.25) inset,
    -2px 0 0 rgba(0,0,0,0.25) inset,
    0 6px 0 #7a3800,
    0 8px 18px rgba(0,0,0,0.6),
    0 0 30px rgba(255,153,0,0.4),
    0 0 70px rgba(255,153,0,0.15);
  transition: all 0.1s;
  animation: acidPulse 2.5s ease-in-out infinite;
  text-shadow: 0 1px 0 rgba(255,255,255,0.3);
}
.btn-acid:hover {
  filter: brightness(1.1);
  box-shadow:
    0 1px 0 rgba(255,255,180,0.7) inset,
    0 -2px 0 rgba(0,0,0,0.5) inset,
    2px 0 0 rgba(255,200,80,0.25) inset,
    -2px 0 0 rgba(0,0,0,0.25) inset,
    0 6px 0 #7a3800,
    0 8px 24px rgba(0,0,0,0.7),
    0 0 45px rgba(255,153,0,0.6),
    0 0 90px rgba(255,153,0,0.25);
}
.btn-acid:active {
  transform: translateY(4px);
  box-shadow:
    0 1px 0 rgba(0,0,0,0.3) inset,
    0 -1px 0 rgba(255,255,180,0.3) inset,
    0 2px 0 #7a3800,
    0 3px 8px rgba(0,0,0,0.5),
    0 0 25px rgba(255,153,0,0.4);
}
.btn-acid.playing {
  background: linear-gradient(180deg,
    #ff6644 0%,
    #ff2200 35%,
    #cc1100 65%,
    #991100 100%
  );
  color: #fff;
  text-shadow: 0 1px 0 rgba(0,0,0,0.4);
  box-shadow:
    0 1px 0 rgba(255,150,120,0.5) inset,
    0 -2px 0 rgba(0,0,0,0.5) inset,
    0 6px 0 #550000,
    0 8px 18px rgba(0,0,0,0.6),
    0 0 35px rgba(255,30,0,0.5),
    0 0 80px rgba(255,30,0,0.2);
  animation: none;
}
@keyframes acidPulse {
  0%,100% { box-shadow:
    0 1px 0 rgba(255,255,180,0.7) inset,
    0 -2px 0 rgba(0,0,0,0.5) inset,
    0 6px 0 #7a3800,
    0 8px 18px rgba(0,0,0,0.6),
    0 0 25px rgba(255,153,0,0.35); }
  50% { box-shadow:
    0 1px 0 rgba(255,255,180,0.7) inset,
    0 -2px 0 rgba(0,0,0,0.5) inset,
    0 6px 0 #7a3800,
    0 8px 18px rgba(0,0,0,0.6),
    0 0 55px rgba(255,153,0,0.7),
    0 0 110px rgba(255,153,0,0.25); }
}
.btn-icon { font-size: 1rem; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2.5rem;
  font-family: var(--font-t);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--orange);
  border: 1px solid var(--orange);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: all 0.3s;
}
.btn-outline:hover {
  background: var(--orange-dim);
  box-shadow: 0 0 25px var(--orange-glow);
  transform: translateY(-3px);
}

/* Preset Selector */
.preset-selector {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1rem;
  animation: fadeUp 1s ease 1s both;
}
.preset-label {
  font-family: var(--font-m);
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  color: rgba(0,229,255,0.4);
}
.preset-btn {
  font-family: var(--font-m);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--cyan);
  background: rgba(0,229,255,0.05);
  border: 1px solid rgba(0,229,255,0.4);
  padding: 0.35rem 0.9rem;
  min-width: 110px;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s;
  text-shadow: 0 0 8px rgba(0,229,255,0.5);
}
.preset-btn:hover {
  background: rgba(0,229,255,0.12);
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(0,229,255,0.3);
}
.preset-btn.active {
  color: var(--green);
  border-color: var(--green);
  background: rgba(0,255,68,0.08);
  box-shadow: 0 0 14px rgba(0,255,68,0.35);
  text-shadow: 0 0 10px rgba(0,255,68,0.7);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: fadeUp 1s ease 1.2s both;
  z-index: 2;
}
.scroll-indicator span {
  font-family: var(--font-m);
  font-size: 0.55rem;
  letter-spacing: 0.5em;
  color: rgba(255,153,0,0.3);
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(255,153,0,0.4), transparent);
  animation: scrollDrop 2s ease-in-out infinite;
}
@keyframes scrollDrop {
  0%,100% { transform: scaleY(0.5) translateY(-20px); opacity: 0; }
  50%      { transform: scaleY(1) translateY(0); opacity: 1; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   BPM DIVIDER
   ============================================ */
.bpm-divider {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 0;
  border-top: 1px solid rgba(255,153,0,0.06);
  border-bottom: 1px solid rgba(255,153,0,0.06);
  overflow: hidden;
}

.wave-bars {
  display: flex;
  align-items: center;
  gap: 3px;
}
.wave-bars span {
  display: block;
  width: 3px;
  background: var(--orange);
  border-radius: 2px;
  opacity: 0.4;
  animation: barAnim 1.2s ease-in-out infinite;
}
.wave-bars span:nth-child(1)  { height: 8px;  animation-delay: 0s; }
.wave-bars span:nth-child(2)  { height: 16px; animation-delay: 0.07s; }
.wave-bars span:nth-child(3)  { height: 24px; animation-delay: 0.14s; }
.wave-bars span:nth-child(4)  { height: 18px; animation-delay: 0.21s; }
.wave-bars span:nth-child(5)  { height: 32px; animation-delay: 0.28s; }
.wave-bars span:nth-child(6)  { height: 20px; animation-delay: 0.35s; }
.wave-bars span:nth-child(7)  { height: 28px; animation-delay: 0.42s; }
.wave-bars span:nth-child(8)  { height: 14px; animation-delay: 0.49s; }
.wave-bars span:nth-child(9)  { height: 22px; animation-delay: 0.56s; }
.wave-bars span:nth-child(10) { height: 36px; animation-delay: 0.63s; }
.wave-bars span:nth-child(11) { height: 26px; animation-delay: 0.70s; }
.wave-bars span:nth-child(12) { height: 18px; animation-delay: 0.77s; }
.wave-bars span:nth-child(13) { height: 30px; animation-delay: 0.84s; }
.wave-bars span:nth-child(14) { height: 12px; animation-delay: 0.91s; }
.wave-bars span:nth-child(15) { height: 20px; animation-delay: 0.98s; }
.wave-bars span:nth-child(16) { height: 16px; animation-delay: 1.05s; }
.wave-bars span:nth-child(17) { height: 28px; animation-delay: 1.12s; }
.wave-bars span:nth-child(18) { height: 10px; animation-delay: 1.19s; }
.wave-bars span:nth-child(19) { height: 24px; animation-delay: 1.26s; }
.wave-bars span:nth-child(20) { height: 8px;  animation-delay: 1.33s; }

@keyframes barAnim {
  0%,100% { transform: scaleY(0.4); opacity: 0.25; }
  50%      { transform: scaleY(1);   opacity: 0.8; }
}

.bpm-tag {
  font-family: var(--font-t);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--orange);
  text-shadow: 0 0 10px var(--orange-glow);
  white-space: nowrap;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--border);
  background: var(--orange-dim);
}

/* ============================================
   GALLERY — HUD FRAME
   ============================================ */
.gallery {
  padding: 100px 0;
}

.gallery-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  align-items: stretch;
}

.gallery-main {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}
.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  filter: brightness(0.9) contrast(1.05);
  transition: transform 0.6s ease;
}
.gallery-main:hover img { transform: scale(1.03); }

.gallery-skins {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.skin-card {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  flex: 1;
}
.skin-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.5s ease;
}
.skin-card:hover img { transform: scale(1.05); }

/* HUD FRAME OVERLAY */
.hud-frame { position: relative; }
.hf-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Corner brackets */
.hf-tl, .hf-tr, .hf-bl, .hf-br {
  position: absolute;
  width: 20px; height: 20px;
  border-color: var(--orange);
  border-style: solid;
  opacity: 0.8;
  transition: opacity 0.3s;
}
.hud-frame:hover .hf-tl,
.hud-frame:hover .hf-tr,
.hud-frame:hover .hf-bl,
.hud-frame:hover .hf-br { opacity: 1; }

.hf-tl { top: 8px;  left: 8px;  border-width: 2px 0 0 2px; }
.hf-tr { top: 8px;  right: 8px; border-width: 2px 2px 0 0; }
.hf-bl { bottom: 8px; left: 8px;  border-width: 0 0 2px 2px; }
.hf-br { bottom: 8px; right: 8px; border-width: 0 2px 2px 0; }

/* Scan line */
.hf-scan {
  position: absolute;
  top: -2px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.5), transparent);
  animation: scanDown 4s linear infinite;
}
@keyframes scanDown {
  0%   { top: -2px; opacity: 1; }
  80%  { opacity: 0.8; }
  100% { top: 100%; opacity: 0; }
}

/* Image tag */
.hf-tag {
  position: absolute;
  bottom: 14px; left: 14px;
  font-family: var(--font-m);
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow);
  background: rgba(2,4,8,0.75);
  padding: 4px 10px;
  border-left: 2px solid var(--cyan);
}

/* Targeting reticle (gallery-main only) */
.hf-target {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
}
.target-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(0,229,255,0.4);
  animation: targetPulse 2s ease-in-out infinite;
}
@keyframes targetPulse {
  0%,100% { transform: scale(1); opacity: 0.5; }
  50%      { transform: scale(1.15); opacity: 0.9; }
}
.target-cross-h {
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 1px;
  background: rgba(0,229,255,0.4);
  transform: translateY(-50%);
}
.target-cross-v {
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 100%;
  background: rgba(0,229,255,0.4);
  transform: translateX(-50%);
}

/* ============================================
   FEATURES GRID
   ============================================ */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feat-card {
  background: linear-gradient(145deg, var(--bg-card), var(--bg-surface));
  border: 1px solid var(--border);
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s, border-color 0.4s, box-shadow 0.4s;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.feat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(0,229,255,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}
.feat-card:hover::before { opacity: 1; }

.feat-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.3), transparent);
  transform: scaleX(0);
  transition: transform 0.4s;
}
.feat-card:hover::after { transform: scaleX(1); }

.feat-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,229,255,0.25);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 30px rgba(0,229,255,0.05);
}

.feat-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 4px;
  background: var(--cyan-dim);
  border: 1px solid var(--border-cyan);
  font-family: var(--font-m);
  font-size: 0.75rem;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
  margin-bottom: 1.2rem;
  transition: box-shadow 0.3s;
}
.feat-card:hover .feat-code {
  box-shadow: 0 0 20px var(--cyan-glow);
}

.feat-card h3 {
  font-family: var(--font-t);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--orange);
  margin-bottom: 0.6rem;
  text-transform: uppercase;
}

.feat-card p {
  font-size: 0.95rem;
  color: rgba(221, 216, 204, 0.55);
  line-height: 1.7;
}

/* ============================================
   SIGNAL FLOW
   ============================================ */
.signal-section {
  padding: 100px 0;
}

.signal-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 3rem 0;
}

.chain-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 1.2rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  min-width: 90px;
  position: relative;
  transition: all 0.3s;
}
.chain-node:hover {
  border-color: rgba(255,153,0,0.4);
  box-shadow: 0 0 20px rgba(255,153,0,0.08);
}
.chain-node.active {
  border-color: rgba(0,229,255,0.4);
  background: var(--cyan-dim);
  box-shadow: 0 0 20px rgba(0,229,255,0.1);
}

.cn-code {
  font-family: var(--font-m);
  font-size: 0.8rem;
  color: var(--orange);
  text-shadow: 0 0 8px var(--orange-glow);
}
.chain-node.active .cn-code {
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow);
}
.cn-label {
  font-family: var(--font-m);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-align: center;
}

.chain-arrow {
  display: flex;
  align-items: center;
  padding: 0 2px;
}
.chain-arrow svg {
  width: 40px; height: 12px;
  overflow: visible;
}
.chain-arrow svg line {
  stroke: rgba(255,153,0,0.25);
  stroke-width: 1;
}
.chain-arrow svg polygon {
  fill: rgba(255,153,0,0.25);
}

.signal-pulse-bar {
  position: relative;
  width: 100%;
  height: 2px;
  background: rgba(255,153,0,0.06);
  margin-top: 2rem;
  border-radius: 1px;
  overflow: hidden;
}
.signal-pulse-fill {
  position: absolute;
  top: 0; left: -30%;
  width: 30%; height: 100%;
  background: linear-gradient(90deg, transparent, var(--orange), transparent);
  animation: pulseSweep 3s ease-in-out infinite;
}
@keyframes pulseSweep {
  0%   { left: -30%; }
  100% { left: 100%; }
}

/* ============================================
   SPECS
   ============================================ */
.specs {
  padding: 100px 0;
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid rgba(255,153,0,0.06);
}

.spec-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  background: var(--bg-card);
  border-bottom: 1px solid rgba(255,153,0,0.04);
  gap: 1rem;
  transition: background 0.3s;
}
.spec-row:hover { background: var(--bg-surface); }

.spec-k {
  font-family: var(--font-m);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: rgba(255,153,0,0.45);
}
.spec-v {
  font-family: var(--font-b);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}
.spec-free {
  color: var(--green);
  text-shadow: 0 0 10px rgba(0,255,68,0.5);
  font-family: var(--font-t);
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* ============================================
   DOWNLOAD CTA
   ============================================ */
.download {
  padding: 120px 0;
}

.dl-box {
  position: relative;
  text-align: center;
  padding: 5rem 3rem;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, var(--bg-card), var(--bg));
  overflow: hidden;
}

.dl-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255,153,0,0.05) 0%, transparent 70%);
  pointer-events: none;
  animation: dlGlowPulse 4s ease-in-out infinite;
}
@keyframes dlGlowPulse {
  0%,100% { transform: translate(-50%,-50%) scale(1); }
  50%      { transform: translate(-50%,-50%) scale(1.2); }
}

/* DL corner brackets */
.dl-corners { position: absolute; inset: 0; pointer-events: none; }
.dlc {
  position: absolute;
  width: 28px; height: 28px;
  border-color: var(--orange);
  border-style: solid;
  opacity: 0.6;
}
.dlc.tl { top: 16px; left: 16px;  border-width: 2px 0 0 2px; }
.dlc.tr { top: 16px; right: 16px; border-width: 2px 2px 0 0; }
.dlc.bl { bottom: 16px; left: 16px;  border-width: 0 0 2px 2px; }
.dlc.br { bottom: 16px; right: 16px; border-width: 0 2px 2px 0; }

.dl-title {
  font-family: var(--font-t);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  letter-spacing: 0.2em;
  background: linear-gradient(135deg, var(--orange), var(--orange-hot), #ffcc00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255,153,0,0.3));
  margin: 1rem 0 1.2rem;
  position: relative;
}

.dl-sub {
  font-size: 1.1rem;
  color: rgba(221,216,204,0.5);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  position: relative;
}

.dl-price {
  font-family: var(--font-t);
  font-size: clamp(3rem, 9vw, 6rem);
  font-weight: 900;
  color: var(--orange);
  text-shadow: 0 0 30px var(--orange-glow), 0 0 80px rgba(255,153,0,0.2);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
  position: relative;
  animation: priceGlow 3s ease-in-out infinite;
}
.dl-cents {
  font-size: 0.45em;
  vertical-align: super;
}
@keyframes priceGlow {
  0%,100% { text-shadow: 0 0 30px var(--orange-glow), 0 0 80px rgba(255,153,0,0.2); }
  50%      { text-shadow: 0 0 50px var(--orange-glow), 0 0 120px rgba(255,153,0,0.4); }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem 3rem;
  font-family: var(--font-t);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #000;
  background: linear-gradient(135deg, var(--orange), var(--orange-hot));
  border: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: all 0.3s;
  position: relative;
  animation: btnPulse 3s ease-in-out infinite;
}
.btn-primary:hover {
  transform: translateY(-4px);
  filter: brightness(1.15);
  box-shadow: 0 12px 40px rgba(255,153,0,0.4);
}
@keyframes btnPulse {
  0%,100% { box-shadow: 0 0 20px rgba(255,153,0,0.3); }
  50%      { box-shadow: 0 0 40px rgba(255,153,0,0.6), 0 0 80px rgba(255,153,0,0.2); }
}

.dl-formats {
  margin-top: 1.5rem;
  font-family: var(--font-m);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: rgba(255,153,0,0.3);
  position: relative;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255,153,0,0.07);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  max-width: 1280px;
  margin: 0 auto 3rem;
  padding: 0 2rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.8;
  margin-top: 1rem;
}
.footer-brand .nav-logo {
  font-size: 1rem;
}

.footer-links h4, .footer-contact h4 {
  font-family: var(--font-t);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--orange);
  margin-bottom: 1.2rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links li, .footer-links a {
  font-size: 0.85rem;
  color: var(--text-dim);
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--orange); }

.footer-contact p {
  font-family: var(--font-m);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid rgba(255,153,0,0.04);
}
.footer-bottom p {
  font-family: var(--font-m);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: rgba(255,153,0,0.2);
}
.footer-acid {
  color: rgba(0,229,255,0.25) !important;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .gallery-layout { grid-template-columns: 1fr; }
  .gallery-skins { flex-direction: row; flex-wrap: wrap; }
  .skin-card { height: 200px; flex: 1 1 calc(33% - 16px); }
  .gallery-main { height: 400px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .navbar { padding: 1rem 1.5rem; }
  .navbar.scrolled { padding: 0.7rem 1.5rem; }
  .hamburger { display: flex; }
  .hd-1, .hd-2, .hd-3, .hd-4 { display: none; }
  .r3, .r4 { display: none; }

  .container { padding: 0 1.2rem; }

  .section-header { margin-bottom: 40px; }
  .section-tag { letter-spacing: 0.25em; }
  .section-title { letter-spacing: 2px; }
  .section-sub { letter-spacing: 0.1em; font-size: 0.75rem; }

  .hero-label { letter-spacing: 0.25em; }
  .hero-tagline { letter-spacing: 0.2em; font-size: 0.6rem; }
  .hero-btns { flex-direction: column; align-items: center; gap: 1rem; }

  .ht-solar { font-size: clamp(3rem, 17vw, 4.5rem); letter-spacing: 0.08em; }
  .ht-303 { font-size: clamp(1.8rem, 10vw, 2.8rem); letter-spacing: 0.3em; }
  .btn-acid, .btn-outline { width: 100%; max-width: 300px; justify-content: center; }

  .preset-selector { flex-wrap: wrap; gap: 0.5rem; padding: 0 1rem; justify-content: center; }
  .preset-label { width: 100%; text-align: center; }
  .preset-btn { min-width: 0; flex: 1 1 calc(50% - 0.5rem); max-width: calc(50% - 0.5rem); font-size: 0.55rem; }

  .features-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr; }
  .signal-chain { gap: 4px; }
  .chain-arrow svg { width: 20px; }
  .chain-node { min-width: 60px; padding: 0.7rem 0.6rem; font-size: 0.55rem; }

  .gallery-skins { flex-direction: column; }
  .skin-card { height: 220px; flex: none; }
  .gallery-main { height: 360px; }

  .dl-box { padding: 3rem 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }

  .hero-content { padding: 6rem 1rem 2rem; }
  .hero-label { letter-spacing: 0.15em; font-size: 0.6rem; }
  .hero-tagline { letter-spacing: 0.1em; }
  .btn-acid { padding: 0.9rem 1.5rem; letter-spacing: 0.1em; }
  .btn-outline { padding: 0.9rem 1.5rem; }

  .ht-solar { font-size: clamp(2.8rem, 16vw, 3.5rem); letter-spacing: 0.05em; }
  .ht-303 { font-size: clamp(1.5rem, 9vw, 2.2rem); letter-spacing: 0.25em; }

  .preset-selector { gap: 0.4rem; padding: 0 0.5rem; }
  .preset-btn { flex: 1 1 calc(50% - 0.4rem); max-width: calc(50% - 0.4rem); min-width: 0; padding: 0.35rem 0.4rem; font-size: 0.5rem; letter-spacing: 0.08em; }

  .section-tag { letter-spacing: 0.15em; font-size: 0.6rem; }
  .section-sub { font-size: 0.7rem; letter-spacing: 0.05em; }
  .section-header { margin-bottom: 32px; }

  .signal-chain { flex-direction: column; }
  .chain-arrow { transform: rotate(90deg); }
  .chain-node { min-width: 120px; }

  .gallery-main { height: 260px; }
  .skin-card { height: 180px; }

  .hf-tag { font-size: 0.45rem; letter-spacing: 0.15em; }
}