/* ═══════════════════════════════════════════════════════════════════
   SPECTRA — Cinematic CSS v5
   Hero cleanup · Color-coded tools · Clickable 3D graph · Hex interaction
   Footer cleanup · Consistent hover/click/active states
═══════════════════════════════════════════════════════════════════ */

/* ── TOKENS ──────────────────────────────────────────────────────── */
:root {
  --bg:           #060810;
  --bg-deep:      #040608;
  --surface:      #0d1420;
  --surface-2:    #121c2e;
  --ice:          #E8F4FD;
  --ice-dim:      rgba(232,244,253,0.52);
  --ice-faint:    rgba(232,244,253,0.13);
  --ice-ghost:    rgba(232,244,253,0.05);
  --cream:        #F5F0E8;
  --accent:       #7BB8D4;
  --accent-dim:   rgba(123,184,212,0.20);
  --glow:         #A8D8F0;
  --glow-dim:     rgba(168,216,240,0.16);
  --glow-faint:   rgba(168,216,240,0.055);
  --border:       rgba(168,216,240,0.08);
  --border-hi:    rgba(168,216,240,0.26);

  /* Tool accent colors */
  --c-purple: #A78BFA;
  --c-green:  #34D399;
  --c-blue:   #60A5FA;
  --c-orange: #FB923C;
  --c-red:    #F87171;

  --font-sans:   'Space Grotesk', system-ui, sans-serif;
  --font-mono:   'Space Mono', 'Courier New', monospace;
  --ease-out:    cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-cinema: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 64px;
}

/* ── RESET ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg-deep);
  color: var(--ice);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  cursor: none;
}
::selection { background: rgba(168,216,240,0.18); color: var(--ice); }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button {
  cursor: none; border: none; background: none;
  font: inherit; color: inherit; padding: 0;
}
img, svg { display: block; }
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(123,184,212,0.18); border-radius: 2px; }

/* ══════════════════════════════════════════════════════════════════
   LOADER
══════════════════════════════════════════════════════════════════ */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-deep);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.9s var(--ease-cinema), visibility 0.9s;
}
#loader.out { opacity: 0; visibility: hidden; pointer-events: none; }

.loader-inner { display: flex; flex-direction: column; align-items: center; gap: 2rem; }

.loader-word {
  display: flex; gap: 0.05em;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5.5vw, 3.8rem);
  font-weight: 700; letter-spacing: 0.40em;
  color: var(--glow);
  filter: drop-shadow(0 0 36px rgba(168,216,240,0.42));
}
.loader-word span {
  opacity: 0; transform: translateY(20px) scale(0.92);
  display: inline-block;
  animation: lc 0.5s var(--ease-cinema) forwards;
}
.loader-word span:nth-child(1){animation-delay:0.00s}
.loader-word span:nth-child(2){animation-delay:0.07s}
.loader-word span:nth-child(3){animation-delay:0.14s}
.loader-word span:nth-child(4){animation-delay:0.21s}
.loader-word span:nth-child(5){animation-delay:0.28s}
.loader-word span:nth-child(6){animation-delay:0.35s}
.loader-word span:nth-child(7){animation-delay:0.42s}
@keyframes lc { to { opacity:1; transform:translateY(0) scale(1); } }

.loader-bar-track {
  width: 220px; height: 1px;
  background: var(--border); position: relative; overflow: hidden;
}
.loader-bar-fill {
  position: absolute; inset: 0; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--glow));
  box-shadow: 0 0 12px var(--glow);
  transition: width 0.22s var(--ease-smooth);
}
.loader-status {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--accent); opacity: 0.42;
  min-height: 1em; transition: opacity 0.3s;
}

/* ══════════════════════════════════════════════════════════════════
   CUSTOM CURSOR
══════════════════════════════════════════════════════════════════ */
#cursor-dot, #cursor-ring {
  position: fixed; pointer-events: none; z-index: 9998;
  border-radius: 50%; transform: translate(-50%,-50%);
  will-change: left, top;
  transition: left 0s, top 0s;
}
#cursor-dot {
  width: 5px; height: 5px;
  background: var(--glow);
  box-shadow: 0 0 8px var(--glow), 0 0 18px rgba(168,216,240,0.38);
  transition: width .18s, height .18s, opacity .18s, background .2s, box-shadow .2s;
}
#cursor-ring {
  width: 32px; height: 32px;
  border: 1px solid rgba(168,216,240,0.42);
  transition: width .36s var(--ease-smooth), height .36s var(--ease-smooth),
              border-color .24s, background .24s;
}
body.cur-hover #cursor-ring {
  width: 52px; height: 52px;
  border-color: var(--glow);
  background: rgba(168,216,240,0.04);
}
body.cur-hover #cursor-dot { width: 3px; height: 3px; opacity: 0.5; }

/* Tool-colored cursor when a tool node is hovered */
body.cur-tool #cursor-dot  { background: var(--tc, var(--glow)); box-shadow: 0 0 12px var(--tc, var(--glow)); }
body.cur-tool #cursor-ring { border-color: var(--tc, var(--glow)); }

@media (hover:none) {
  #cursor-dot, #cursor-ring { display: none; }
  body { cursor: auto; }
  button, a { cursor: pointer; }
}

/* ══════════════════════════════════════════════════════════════════
   FIXED CANVAS
══════════════════════════════════════════════════════════════════ */
#world-canvas {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0; pointer-events: none;
}

/* ══════════════════════════════════════════════════════════════════
   NAVIGATION
══════════════════════════════════════════════════════════════════ */
#nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 200; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  transition: background .55s var(--ease-smooth), border-color .55s;
  border-bottom: 1px solid transparent;
}
#nav.scrolled {
  background: rgba(4,6,8,0.82);
  backdrop-filter: blur(28px) saturate(1.5);
  -webkit-backdrop-filter: blur(28px) saturate(1.5);
  border-bottom-color: var(--border);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-mono); font-size: 0.9rem;
  letter-spacing: 0.22em; color: var(--ice);
  transition: color .2s, filter .2s;
}
.nav-logo:hover { color: var(--glow); filter: drop-shadow(0 0 10px rgba(168,216,240,0.28)); }
.nav-logo-mark {
  width: 28px; height: 28px;
  border: 1px solid var(--accent); border-radius: 6px;
  display: grid; place-items: center;
  font-size: 0.72rem; font-weight: 700; color: var(--glow);
  transition: box-shadow .22s, border-color .22s;
}
.nav-logo:hover .nav-logo-mark { box-shadow: 0 0 18px rgba(168,216,240,0.28); border-color: var(--glow); }
.nav-logo-text { letter-spacing: 0.30em; }
.nav-links { display: flex; align-items: center; gap: 2.4rem; }
.nav-link {
  font-size: 0.78rem; letter-spacing: 0.08em; color: var(--ice-dim);
  transition: color .2s; position: relative; padding-bottom: 2px;
}
.nav-link::after {
  content: ''; position: absolute;
  bottom: -2px; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--glow));
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease-smooth);
}
.nav-link:hover { color: var(--ice); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-progress { position: absolute; bottom: 0; left: 0; right: 0; height: 1px; overflow: hidden; }
.nav-progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--glow));
  box-shadow: 0 0 8px var(--glow);
  transition: width .08s linear;
}

/* ══════════════════════════════════════════════════════════════════
   TOOL HUD
══════════════════════════════════════════════════════════════════ */
#tool-hud {
  --hud-color: #A8D8F0;
  position: fixed;
  bottom: 2.5rem; left: 50%; transform: translateX(-50%) translateY(24px);
  z-index: 300;
  background: rgba(5,8,18,0.94);
  border: 1px solid rgba(168,216,240,0.10);
  border-top: 2px solid var(--hud-color);
  border-radius: 16px;
  padding: 1.35rem 2.2rem;
  min-width: 340px; max-width: 500px;
  backdrop-filter: blur(32px) saturate(1.4);
  -webkit-backdrop-filter: blur(32px) saturate(1.4);
  display: flex; flex-direction: column; gap: 0.5rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity .4s var(--ease-smooth), transform .45s var(--ease-spring),
              border-top-color .35s;
  box-shadow: 0 28px 72px rgba(0,0,0,0.58), 0 0 48px rgba(168,216,240,0.04);
}
#tool-hud.visible {
  opacity: 1; transform: translateX(-50%) translateY(0);
  pointer-events: all;
}
.hud-label {
  font-family: var(--font-mono); font-size: 0.55rem;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--hud-color); opacity: 0.60;
}
.hud-name {
  font-size: 1.12rem; font-weight: 600;
  color: var(--hud-color); letter-spacing: 0.02em;
  transition: color .3s;
}
.hud-desc {
  font-size: 0.82rem; color: var(--ice-dim); line-height: 1.6;
  margin-top: 0.1rem;
}
.hud-link {
  margin-top: 0.6rem; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em;
  border-radius: 8px; background: transparent;
  border: 1px solid var(--hud-color); color: var(--hud-color);
  transition: background .25s, box-shadow .25s, transform .25s var(--ease-spring), color .25s;
}
.hud-link:hover {
  background: color-mix(in srgb, var(--hud-color) 12%, transparent);
  box-shadow: 0 0 24px color-mix(in srgb, var(--hud-color) 28%, transparent);
  transform: translateY(-2px);
}
.hud-link:active { transform: translateY(0); transition-duration: .12s; }

/* ══════════════════════════════════════════════════════════════════
   NODE TOOLTIP
══════════════════════════════════════════════════════════════════ */
#node-tooltip {
  --tc: #A8D8F0;
  position: fixed; z-index: 9000; pointer-events: none;
  font-family: var(--font-mono); font-size: 0.62rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--tc);
  background: rgba(6,8,16,0.92);
  border: 1px solid color-mix(in srgb, var(--tc) 55%, transparent);
  border-radius: 6px; padding: 0.4rem 0.75rem;
  opacity: 0; transition: opacity .2s;
  white-space: nowrap;
  box-shadow: 0 0 22px color-mix(in srgb, var(--tc) 18%, transparent);
}
#node-tooltip.visible { opacity: 1; }

/* ══════════════════════════════════════════════════════════════════
   SCROLL CONTAINER + SCENES
══════════════════════════════════════════════════════════════════ */
#scroll-container { position: relative; z-index: 10; pointer-events: none; }

.scene {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: var(--nav-h) clamp(1.5rem, 5vw, 4rem) 0;
}

#scene-hero     { min-height: 100vh; }
#scene-tools    { min-height: 160vh; }
#scene-features { min-height: 160vh; }
#scene-about    { min-height: 130vh; }
#scene-cta      { min-height: 100vh; padding-bottom: 5rem; }

/* vignette */
#scroll-container::before,
#scroll-container::after {
  content: ''; position: fixed; left: 0; right: 0; height: 160px;
  pointer-events: none; z-index: 50;
}
#scroll-container::before { top: 0; background: linear-gradient(to bottom, var(--bg-deep) 0%, transparent 100%); }
#scroll-container::after  { bottom: 0; background: linear-gradient(to top,   var(--bg-deep) 0%, transparent 100%); }

.scene-ui {
  position: relative; z-index: 20; pointer-events: all;
  max-width: 900px; width: 100%;
}

/* ══════════════════════════════════════════════════════════════════
   SCENE 0 — HERO
   Clean dominant typography, no brand clutter, centered composition
══════════════════════════════════════════════════════════════════ */
#ui-hero {
  text-align: center;
  display: flex; flex-direction: column; align-items: center;
  gap: 1.6rem;
  max-width: 820px;
  /* Push UI to bottom third — particles own the center */
  position: absolute;
  bottom: 10vh;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
}

.hero-pre {
  font-family: var(--font-mono); font-size: 0.64rem;
  letter-spacing: 0.42em; text-transform: uppercase;
  color: var(--accent); opacity: 0;
  display: inline-flex; align-items: center; gap: 0.6rem;
}
.hero-pre::before {
  content: '';
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--glow); flex-shrink: 0;
  box-shadow: 0 0 8px var(--glow);
  animation: pip-blink 2.5s ease-in-out infinite;
}
@keyframes pip-blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

/* Subtitle — sits below the 3D particle SPECTRA */
.hero-sub {
  font-size: clamp(1rem, 1.75vw, 1.18rem);
  color: var(--ice-dim); max-width: 420px;
  line-height: 1.80; opacity: 0; transform: translateY(20px);
  letter-spacing: 0.01em;
}

.hero-ctas {
  display: flex; gap: 1.2rem; flex-wrap: wrap;
  justify-content: center; opacity: 0; transform: translateY(16px);
}

/* scroll cue */
.scroll-cue {
  position: absolute; bottom: 2.2rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  z-index: 20; opacity: 0; pointer-events: none;
  animation: sc-appear 1.2s var(--ease-cinema) 2.8s forwards;
}
@keyframes sc-appear { to { opacity: 1; } }
.sc-label {
  font-family: var(--font-mono); font-size: 0.56rem;
  letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--accent); opacity: 0.42;
}
.sc-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--glow), transparent);
  animation: sc-pulse 2.2s ease-in-out infinite;
}
@keyframes sc-pulse {
  0%  {transform:scaleY(0);transform-origin:top;opacity:1}
  48% {transform:scaleY(1);transform-origin:top;opacity:1}
  52% {transform-origin:bottom}
  100%{transform:scaleY(0);transform-origin:bottom;opacity:0}
}

/* ══════════════════════════════════════════════════════════════════
   COMMON SECTION ELEMENTS
══════════════════════════════════════════════════════════════════ */
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-mono); font-size: 0.59rem;
  letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1.1rem; opacity: 0.8;
}
.eyebrow-pip {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--glow); flex-shrink: 0;
  box-shadow: 0 0 8px var(--glow);
  animation: pip-blink 2.5s ease-in-out infinite;
}
.section-title {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 300; letter-spacing: -0.026em; line-height: 1.1;
  margin-bottom: 1.4rem;
}
.section-title em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(130deg, var(--glow) 0%, var(--cream) 55%, var(--glow) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: shimmer 8s linear infinite;
}
.section-body {
  font-size: 1rem; color: var(--ice-dim);
  line-height: 1.80; max-width: 560px; margin-bottom: 2.8rem;
}

/* ══════════════════════════════════════════════════════════════════
   SCENE 1 — INTERACTIVE TOOL SYSTEM
   Color-coded, compact (~35% smaller), full interaction states
══════════════════════════════════════════════════════════════════ */
#scene-tools { justify-content: flex-end; padding-right: 4vw; }
#ui-tools { max-width: 400px; }

.tools-orbital {
  display: flex; flex-direction: column;
  gap: 0.58rem; margin-top: 1.4rem;
}

/* ── Color mapping ── */
.tool-node[data-color="purple"] { --tn-color: var(--c-purple); }
.tool-node[data-color="green"]  { --tn-color: var(--c-green);  }
.tool-node[data-color="blue"]   { --tn-color: var(--c-blue);   }
.tool-node[data-color="orange"] { --tn-color: var(--c-orange); }
.tool-node[data-color="red"]    { --tn-color: var(--c-red);    }

.tool-node {
  --tn-color: var(--glow);
  display: flex; align-items: center; gap: 0.65rem;
  /* ~35% smaller than original via reduced padding */
  padding: 0.52rem 0.80rem;
  background: rgba(10,16,28,0.72);
  border: 1px solid var(--border);
  border-radius: 9px;
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  transition:
    border-color .28s var(--ease-smooth),
    background .28s,
    transform .30s var(--ease-spring),
    box-shadow .28s,
    opacity .28s;
  opacity: 0; transform: translateX(40px);
  cursor: none; position: relative; overflow: hidden;
  text-align: left; width: 100%;
}

/* left accent bar */
.node-accent-bar {
  position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--tn-color); opacity: 0.45;
  border-radius: 9px 0 0 9px;
  transition: opacity .25s, width .25s var(--ease-smooth);
}

/* shine sweep */
.tool-node::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(105deg,
    transparent 40%,
    color-mix(in srgb, var(--tn-color) 6%, transparent) 50%,
    transparent 60%);
  background-size: 250% 100%; background-position: 200% 0;
  transition: background-position .55s var(--ease-smooth);
  pointer-events: none;
}
.tool-node:hover::after { background-position: -50% 0; }

/* HOVER state */
.tool-node:hover {
  border-color: color-mix(in srgb, var(--tn-color) 55%, transparent);
  background: rgba(14,22,38,0.90);
  transform: translateX(6px) !important;
  box-shadow:
    0 4px 24px rgba(0,0,0,0.28),
    inset 0 0 0 1px rgba(255,255,255,0.025),
    -2px 0 18px color-mix(in srgb, var(--tn-color) 14%, transparent);
}
.tool-node:hover .node-accent-bar { opacity: 0.9; }

/* ACTIVE (pressed) state */
.tool-node:active {
  transform: translateX(3px) scale(0.985) !important;
  transition-duration: .1s;
}

/* SELECTED state */
.tool-node.selected {
  border-color: color-mix(in srgb, var(--tn-color) 70%, transparent);
  background: rgba(14,22,42,0.95);
  transform: translateX(8px) !important;
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--tn-color) 38%, transparent),
    0 8px 36px rgba(0,0,0,0.42),
    -4px 0 28px color-mix(in srgb, var(--tn-color) 22%, transparent);
}
.tool-node.selected .node-accent-bar { opacity: 1; width: 4px; }

/* DIMMED state */
.tool-node.dimmed { opacity: 0.28 !important; transform: translateX(0) !important; }
.tool-node.dimmed:hover { opacity: 0.58 !important; }

/* node icon */
.node-core {
  width: 24px; height: 24px;
  display: grid; place-items: center;
  color: var(--tn-color); flex-shrink: 0;
  transition: color .28s, filter .28s;
}
.node-core svg { width: 14px; height: 14px; }
.tool-node:hover .node-core,
.tool-node.selected .node-core {
  filter: drop-shadow(0 0 5px var(--tn-color));
}

/* labels */
.node-label { display: flex; align-items: center; gap: 0.52rem; flex: 1; min-width: 0; }
.node-num {
  font-family: var(--font-mono); font-size: 0.50rem;
  letter-spacing: 0.14em; color: var(--ice-faint); flex-shrink: 0;
}
.node-name {
  font-size: 0.78rem; font-weight: 500;
  color: var(--ice); letter-spacing: 0.02em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: color .25s;
}
.tool-node:hover .node-name,
.tool-node.selected .node-name { color: var(--tn-color); }

/* status badge */
.node-status {
  margin-left: auto;
  font-family: var(--font-mono); font-size: 0.46rem;
  letter-spacing: 0.10em; text-transform: uppercase;
  padding: 0.16rem 0.48rem; border-radius: 20px;
  border: 1px solid var(--border); color: var(--accent);
  flex-shrink: 0; white-space: nowrap;
  transition: border-color .25s, color .25s, background .25s;
}
.node-status.active {
  color: var(--c-green); border-color: rgba(52,211,153,0.32);
  background: rgba(52,211,153,0.09);
  animation: status-pulse 2.5s ease-in-out infinite;
}
@keyframes status-pulse {
  0%,100%{box-shadow:0 0 8px rgba(52,211,153,0.10)}
  50%    {box-shadow:0 0 16px rgba(52,211,153,0.28)}
}
.tool-node.selected .node-status {
  border-color: color-mix(in srgb, var(--tn-color) 50%, transparent);
  color: var(--tn-color);
}

/* ══════════════════════════════════════════════════════════════════
   SCENE 2 — ARCHITECTURE / FEATURE FRAGMENTS
   Viewport-contained, hover highlight, click expand, active state
══════════════════════════════════════════════════════════════════ */
#scene-features { justify-content: flex-start; padding-left: 5vw; }
#ui-features { max-width: 580px; }

.feature-fragments {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 0.78rem; margin-top: 1.8rem;
}

.frag {
  display: flex; align-items: flex-start; gap: 0.80rem;
  padding: 0.95rem 1.05rem;
  background: rgba(10,16,28,0.68);
  border: 1px solid var(--border); border-radius: 10px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  opacity: 0; transform: scale(0.84) translateY(12px);
  transition:
    border-color .28s var(--ease-smooth),
    background .28s,
    transform .32s var(--ease-spring),
    box-shadow .28s,
    opacity .35s;
  position: relative; overflow: hidden;
  cursor: none; text-align: left; width: 100%;
}

/* top highlight line */
.frag::before {
  content: ''; position: absolute; top: 0; left: 12%; right: 12%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--fc, var(--glow-dim)), transparent);
  opacity: 0; transition: opacity .28s;
}
/* inner glow */
.frag::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--fc, var(--glow)) 8%, transparent) 0%, transparent 65%);
  opacity: 0; transition: opacity .28s; pointer-events: none;
}

/* HOVER */
.frag:hover {
  border-color: rgba(168,216,240,0.22);
  background: rgba(14,22,38,0.86);
  transform: scale(1.025) translateY(-2px) !important;
  box-shadow: 0 12px 36px rgba(0,0,0,0.26);
}
.frag:hover::before { opacity: 1; }
.frag:hover::after  { opacity: 1; }

/* ACTIVE (pressed) */
.frag:active {
  transform: scale(0.985) translateY(0) !important;
  transition-duration: .1s;
}

/* EXPANDED (clicked) */
.frag.frag-active {
  border-color: rgba(168,216,240,0.30);
  background: rgba(16,26,46,0.94);
  transform: scale(1.04) !important;
  box-shadow:
    0 16px 52px rgba(0,0,0,0.34),
    0 0 0 1px rgba(168,216,240,0.10);
}
.frag.frag-active::before { opacity: 1; }
.frag.frag-active::after  { opacity: 1; }

/* icon wrap */
.frag-icon-wrap {
  --fc: var(--glow);
  width: 32px; height: 32px; flex-shrink: 0;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 7px; color: var(--fc);
  transition: background .25s, box-shadow .25s, border-color .25s, transform .25s var(--ease-spring);
}
.frag-icon-wrap svg { width: 14px; height: 14px; }
.frag:hover .frag-icon-wrap,
.frag.frag-active .frag-icon-wrap {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.14);
  box-shadow: 0 0 16px color-mix(in srgb, var(--fc) 32%, transparent);
  transform: scale(1.1);
}

.frag-body { flex: 1; min-width: 0; }
.frag-title {
  font-size: 0.82rem; font-weight: 500; color: var(--ice);
  line-height: 1.3; margin-bottom: 0.22rem;
  transition: color .25s;
}
.frag:hover .frag-title,
.frag.frag-active .frag-title { color: var(--glow); }
.frag-label { font-size: 0.72rem; color: var(--ice-dim); line-height: 1.45; }

/* ══════════════════════════════════════════════════════════════════
   SCENE 3 — METRICS
══════════════════════════════════════════════════════════════════ */
#scene-about { justify-content: center; }
#ui-about { text-align: center; display: flex; flex-direction: column; align-items: center; }

.metric-row {
  display: flex; gap: 1.4rem; justify-content: center;
  flex-wrap: wrap; margin-top: 0.8rem;
}
.metric {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  opacity: 0; transform: translateY(34px);
  padding: 1.5rem 1.9rem;
  background: rgba(10,16,28,0.60);
  border: 1px solid var(--border); border-radius: 14px;
  backdrop-filter: blur(14px);
  min-width: 112px; position: relative; overflow: hidden;
  transition:
    border-color .28s var(--ease-smooth),
    box-shadow .28s,
    transform .32s var(--ease-spring),
    background .28s;
  cursor: none;
}
.metric::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(168,216,240,0.06) 0%, transparent 65%);
  pointer-events: none;
}
.metric::after {
  content: ''; position: absolute;
  top: 0; left: 15%; right: 15%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glow-dim), transparent);
  opacity: 0; transition: opacity .28s;
}
/* HOVER */
.metric:hover {
  border-color: var(--border-hi);
  box-shadow: 0 0 32px rgba(168,216,240,0.09), 0 12px 40px rgba(0,0,0,0.28);
  transform: translateY(-5px);
  background: rgba(12,20,36,0.78);
}
.metric:hover::after { opacity: 1; }
/* ACTIVE */
.metric:active { transform: translateY(-1px); transition-duration: .12s; }

.metric-val {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700; color: var(--glow); line-height: 1;
  text-shadow: 0 0 28px rgba(168,216,240,0.45), 0 0 55px rgba(168,216,240,0.18);
}
.metric-label {
  font-size: 0.62rem; letter-spacing: 0.13em;
  color: var(--ice-dim); text-transform: uppercase;
  font-family: var(--font-mono);
}

/* ══════════════════════════════════════════════════════════════════
   SCENE 4 — PORTAL CTA  (clean, no dev messaging)
══════════════════════════════════════════════════════════════════ */
#scene-cta { justify-content: center; }
#ui-cta {
  text-align: center; display: flex; flex-direction: column;
  align-items: center; gap: 1.8rem;
}
.cta-title {
  font-size: clamp(2.8rem, 6.5vw, 5.2rem);
  font-weight: 300; letter-spacing: -0.030em; line-height: 1.08;
  opacity: 0; transform: translateY(38px);
}
.cta-title em {
  font-style: italic; font-weight: 400;
  background: linear-gradient(130deg, var(--glow) 0%, var(--cream) 50%, var(--glow) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: shimmer 7s linear infinite;
}
.cta-body {
  font-size: 0.98rem; color: var(--ice-dim); line-height: 1.78;
  max-width: 420px; opacity: 0; transform: translateY(22px);
}
.cta-actions {
  display: flex; gap: 1.1rem; flex-wrap: wrap;
  justify-content: center; opacity: 0; transform: translateY(18px);
}

/* Clean minimal brand closer — just the mark + wordmark, no extra messaging */
.cta-brand {
  display: flex; align-items: center; gap: 0.65rem;
  opacity: 0; margin-top: 0.5rem;
}
.cta-brand-mark {
  width: 24px; height: 24px;
  border: 1px solid rgba(168,216,240,0.18);
  border-radius: 5px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.62rem;
  font-weight: 700; color: rgba(168,216,240,0.35);
  transition: border-color .2s, color .2s, box-shadow .2s;
}
.cta-brand:hover .cta-brand-mark {
  border-color: rgba(168,216,240,0.38);
  color: rgba(168,216,240,0.65);
  box-shadow: 0 0 14px rgba(168,216,240,0.12);
}
.cta-brand-name {
  font-family: var(--font-mono); font-size: 0.54rem;
  letter-spacing: 0.35em; color: rgba(168,216,240,0.22);
  transition: color .2s;
}
.cta-brand:hover .cta-brand-name { color: rgba(168,216,240,0.42); }

/* ══════════════════════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════════════════════ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.85rem 1.9rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--glow) 100%);
  color: var(--bg-deep); font-weight: 600; font-size: 0.85rem;
  letter-spacing: 0.04em; border-radius: 10px; cursor: none;
  transition: transform .26s var(--ease-spring), box-shadow .26s, filter .26s;
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), transparent);
  opacity: 0; transition: opacity .26s;
}
/* HOVER */
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 44px rgba(168,216,240,0.38);
  filter: brightness(1.08);
}
.btn-primary:hover::before { opacity: 1; }
/* ACTIVE */
.btn-primary:active { transform: translateY(0) scale(0.98); transition-duration: .1s; }

.btn-glow {
  box-shadow: 0 0 30px rgba(168,216,240,0.22);
  animation: glow-pulse 3.2s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%,100%{box-shadow:0 0 30px rgba(168,216,240,0.22)}
  50%    {box-shadow:0 0 58px rgba(168,216,240,0.50)}
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.85rem 1.9rem;
  border: 1px solid var(--border); color: var(--ice-dim);
  font-size: 0.85rem; letter-spacing: 0.04em;
  border-radius: 10px; cursor: none;
  transition: border-color .26s, color .26s, background .26s,
              transform .26s var(--ease-spring), box-shadow .26s;
}
/* HOVER */
.btn-ghost:hover {
  border-color: rgba(168,216,240,0.35); color: var(--ice);
  background: rgba(168,216,240,0.06); transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.22);
}
/* ACTIVE */
.btn-ghost:active { transform: translateY(0); transition-duration: .1s; }

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  #scene-tools    { justify-content: center; padding-right: 5vw; }
  #scene-features { justify-content: center; padding-left:  5vw; }
}
@media (max-width: 900px) {
  #scene-tools    { justify-content: center; padding: var(--nav-h) 1.5rem 0; }
  #scene-features { justify-content: center; padding: var(--nav-h) 1.5rem 0; }
  #ui-tools, #ui-features { max-width: 100%; }
  .feature-fragments { grid-template-columns: 1fr; }
  .metric-row { gap: 1.1rem; }
  #tool-hud { min-width: 270px; max-width: 92vw; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero-ctas  { flex-direction: column; width: 100%; }
  .btn-primary, .btn-ghost { justify-content: center; }
  .section-title { font-size: clamp(2rem, 7.5vw, 3rem); }
  .cta-title  { font-size: clamp(2.2rem, 8vw, 3.2rem); }
  .cta-actions { flex-direction: column; width: 100%; }
  .tool-node  { padding: 0.45rem 0.72rem; }
  .feature-fragments { gap: 0.62rem; }
  #tool-hud   { bottom: 1.2rem; padding: 1rem 1.2rem; }
}