/* ======================================================================
   Hipercapital · Simulador de exposición post-cuántica
   Vanilla CSS · CSS transitions only · No frameworks
   ====================================================================== */

:root {
  --bg: #040812;
  --bg-grid: rgba(0, 229, 255, 0.04);
  --cyan: #00E5FF;
  --cyan-soft: rgba(0, 229, 255, 0.18);
  --cyan-glow: rgba(0, 229, 255, 0.3);
  --blue: #3B82F6;
  --red: #FF3B5C;
  --red-glow: rgba(255, 59, 92, 0.35);
  --glass: rgba(15, 23, 42, 0.6);
  --glass-strong: rgba(15, 23, 42, 0.78);
  --text: #E6EDF7;
  --text-dim: #8A9AB5;
  --text-faint: #56657F;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Cyber grid overlay — fixed, full viewport, behind everything */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Soft cyan radial wash */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0, 229, 255, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(59, 130, 246, 0.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* ---------- Layout ---------- */

main { position: relative; z-index: 1; }

.container {
  width: min(960px, calc(100% - 48px));
  margin: 0 auto;
}

/* ---------- Header ---------- */

.brand-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px 0;
  background: linear-gradient(180deg, rgba(4, 8, 18, 0.92), rgba(4, 8, 18, 0.6) 70%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.brand-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.2px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan-glow), 0 0 22px var(--cyan-glow);
}

.brand-tag {
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-weight: 500;
}

/* ---------- Hero ---------- */

.hero {
  padding: 80px 0 40px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--cyan-soft);
  border-radius: 999px;
  background: rgba(0, 229, 255, 0.04);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.eyebrow .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

h1 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: clamp(34px, 5.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  text-wrap: balance;
}

h1 .accent {
  color: var(--cyan);
  text-shadow: 0 0 24px var(--cyan-glow);
}

.hero p {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 580px;
  margin: 0 auto;
  text-wrap: pretty;
}

.hero .scroll-hint {
  margin-top: 56px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.scroll-hint svg { animation: bob 2.2s ease-in-out infinite; }

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ---------- Step layout ---------- */

.step {
  padding: 80px 0;
  position: relative;
}

.step-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 28px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.step.in-view .step-head { opacity: 1; transform: none; }

.step-num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--cyan);
  border: 1px solid var(--cyan-soft);
  border-radius: 4px;
  padding: 6px 10px;
  background: rgba(0, 229, 255, 0.05);
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 6px;
}

.step-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.3px;
}

.step-sub {
  color: var(--text-dim);
  font-size: 15px;
  margin-top: 6px;
  max-width: 560px;
}

/* ---------- Glass card ---------- */

.card {
  background: var(--glass);
  border: 1px solid var(--cyan-soft);
  border-radius: 16px;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 32px;
  position: relative;
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease-out 0.15s, transform 0.8s ease-out 0.15s;
}

.step.in-view .card { opacity: 1; transform: none; }

.card-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.card-label .tick {
  width: 8px;
  height: 1px;
  background: var(--text-faint);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 10px;
  border: 1px solid var(--cyan-soft);
  background: rgba(0, 229, 255, 0.06);
  color: var(--cyan);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition: all 0.25s ease;
  font-feature-settings: 'ss01';
}

.btn:hover, .btn:focus-visible {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--cyan);
  box-shadow: 0 0 30px var(--cyan-glow);
  outline: none;
  transform: translateY(-1px);
}

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary {
  background: var(--cyan);
  color: #022;
  border-color: var(--cyan);
  font-weight: 600;
  box-shadow: 0 0 30px var(--cyan-glow);
}

.btn--primary:hover, .btn--primary:focus-visible {
  background: #4DEEFF;
  border-color: #4DEEFF;
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.55);
  color: #022;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(138, 154, 181, 0.25);
  color: var(--text-dim);
}

.btn--ghost:hover, .btn--ghost:focus-visible {
  border-color: var(--cyan-soft);
  color: var(--cyan);
  box-shadow: none;
}

.btn .arrow { transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ============================================================
   STEP 1 — Wallet visible
   ============================================================ */

.address-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 18px 20px;
  background: rgba(4, 8, 18, 0.5);
  border: 1px solid rgba(138, 154, 181, 0.12);
  border-radius: 10px;
  margin-bottom: 22px;
}

.address-row .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  color: var(--text-faint);
  text-transform: uppercase;
}

.address-row .value {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  word-break: break-all;
  flex: 1;
  min-width: 0;
}

.address-row .balance {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--cyan);
  margin-left: auto;
  white-space: nowrap;
}

/* Pubkey reveal area */
.pubkey-area {
  margin-top: 22px;
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.7s ease, opacity 0.5s ease, margin-top 0.5s ease;
}

.pubkey-area.revealed {
  max-height: 360px;
  opacity: 1;
  margin-top: 22px;
}

.hex-block {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--cyan);
  text-shadow: 0 0 10px var(--cyan-glow);
  background: rgba(0, 229, 255, 0.04);
  border: 1px solid var(--cyan-soft);
  border-radius: 10px;
  padding: 18px 20px;
  word-break: break-all;
  letter-spacing: 0.3px;
}

.hex-block.flash { animation: cyan-flash 0.8s ease-out; }

@keyframes cyan-flash {
  0% { box-shadow: 0 0 0 rgba(0, 229, 255, 0); background: rgba(0, 229, 255, 0.04); }
  30% { box-shadow: 0 0 60px rgba(0, 229, 255, 0.7); background: rgba(0, 229, 255, 0.18); }
  100% { box-shadow: 0 0 0 rgba(0, 229, 255, 0); background: rgba(0, 229, 255, 0.04); }
}

.caption {
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  text-wrap: pretty;
}

.caption strong { color: var(--text); font-weight: 500; }

.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* ============================================================
   STEP 2 — Quantum computation
   ============================================================ */

.quantum-stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 720px) {
  .quantum-stage { grid-template-columns: 280px 1fr; align-items: center; }
}

.qc-orbits {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0 auto;
}

.qc-orbits svg { width: 100%; height: 100%; display: block; }

.qc-orbit {
  fill: none;
  stroke: var(--cyan-soft);
  stroke-width: 1;
}

.qc-core {
  fill: var(--cyan);
  filter: drop-shadow(0 0 12px var(--cyan));
}

.qc-particle {
  fill: var(--cyan);
  filter: drop-shadow(0 0 6px var(--cyan));
  transform-origin: 120px 120px;
}

/* Particles spin only when running */
.qc-orbits.running .qc-particle--a { animation: spin 3.2s linear infinite; }
.qc-orbits.running .qc-particle--b { animation: spin 4.8s linear infinite reverse; }
.qc-orbits.running .qc-particle--c { animation: spin 2.4s linear infinite; }
.qc-orbits.running .qc-core { animation: core-pulse 1.4s ease-in-out infinite; }

/* Subtle idle drift even when not running, so the panel doesn't feel dead */
.qc-orbits .qc-particle--a { animation: spin 18s linear infinite; }
.qc-orbits .qc-particle--b { animation: spin 26s linear infinite reverse; }
.qc-orbits .qc-particle--c { animation: spin 14s linear infinite; }

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

@keyframes core-pulse {
  0%, 100% { opacity: 1; transform: scale(1); transform-origin: 120px 120px; }
  50% { opacity: 0.6; transform: scale(1.25); transform-origin: 120px 120px; }
}

/* Progress */
.qc-readout {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.qc-status {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.6px;
}

.qc-status .blink::after {
  content: '_';
  color: var(--cyan);
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.progress {
  height: 6px;
  background: rgba(138, 154, 181, 0.12);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  box-shadow: 0 0 16px var(--cyan-glow);
  transition: width 0.1s linear;
}

.qc-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.qc-meta span strong {
  color: var(--cyan);
  font-weight: 500;
  margin-left: 6px;
}

/* Key-transform area */
.key-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 6px;
}

.key-block {
  background: rgba(4, 8, 18, 0.5);
  border: 1px solid rgba(138, 154, 181, 0.12);
  border-radius: 10px;
  padding: 14px 18px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  word-break: break-all;
  position: relative;
  transition: all 0.5s ease;
}

.key-block .k-label {
  display: block;
  font-size: 10px;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
  font-family: var(--mono);
}

.key-block.public { color: var(--cyan); border-color: var(--cyan-soft); }
.key-block.public .k-label { color: var(--cyan); opacity: 0.7; }

.key-block.private {
  color: var(--text-faint);
  border-style: dashed;
  filter: blur(3px);
  transition: filter 0.6s ease, color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}

.key-block.private.revealed {
  color: var(--cyan);
  border-style: solid;
  border-color: var(--cyan);
  filter: blur(0);
  box-shadow: 0 0 30px var(--cyan-glow), inset 0 0 20px rgba(0, 229, 255, 0.06);
}

.key-block.private.revealed .k-label { color: var(--cyan); opacity: 1; }

.key-block.private.flashing { animation: cyan-flash 0.9s ease-out; }

/* ============================================================
   STEP 3 — Robo simulado
   ============================================================ */

.tx-stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.tx-flow {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  gap: 14px;
  align-items: stretch;
}

@media (max-width: 640px) {
  .tx-flow { grid-template-columns: 1fr; }
  .tx-flow .tx-arrow { transform: rotate(90deg); height: 60px; }
}

.tx-node {
  background: rgba(4, 8, 18, 0.5);
  border: 1px solid rgba(138, 154, 181, 0.14);
  border-radius: 12px;
  padding: 18px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.6s ease;
}

.tx-node .n-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-faint);
}

.tx-node .n-addr {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  word-break: break-all;
}

.tx-node .n-amount {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.3px;
  margin-top: auto;
  font-variant-numeric: tabular-nums;
}

.tx-node--from .n-amount { color: var(--text); transition: color 0.5s ease; }
.tx-node--from.drained .n-amount { color: var(--text-faint); text-decoration: line-through; text-decoration-color: var(--red); }
.tx-node--from.drained { border-color: rgba(138, 154, 181, 0.08); opacity: 0.7; }

.tx-node--to {
  border-color: rgba(255, 59, 92, 0.0);
}

.tx-node--to.active {
  border-color: rgba(255, 59, 92, 0.5);
  box-shadow: 0 0 32px var(--red-glow);
}

.tx-node--to .n-amount { color: var(--red); transition: color 0.5s ease; }

.tx-node--to .n-addr .unknown {
  color: var(--red);
  letter-spacing: 0.5px;
}

.tx-arrow {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tx-arrow svg { width: 100%; height: 40px; overflow: visible; }

.tx-arrow .track {
  stroke: rgba(138, 154, 181, 0.2);
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: 4 4;
}

.tx-arrow .head {
  fill: rgba(138, 154, 181, 0.4);
  transition: fill 0.5s ease;
}

.tx-arrow.active .head { fill: var(--red); filter: drop-shadow(0 0 8px var(--red-glow)); }

.tx-arrow .pulse-dot {
  fill: var(--red);
  filter: drop-shadow(0 0 8px var(--red));
  opacity: 0;
}

.tx-arrow.active .pulse-dot { animation: tx-pulse 1.6s ease-in-out infinite; }

@keyframes tx-pulse {
  0% { opacity: 0; transform: translateX(-30px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: translateX(30px); }
}

.tx-sig {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(255, 59, 92, 0.05);
  border: 1px solid rgba(255, 59, 92, 0.15);
  border-radius: 8px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease 0.2s, transform 0.5s ease 0.2s;
}

.tx-sig.shown { opacity: 1; transform: none; }

.tx-sig::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 10px var(--red);
  flex-shrink: 0;
}

.tx-sig .red { color: var(--red); }

/* Comparison */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 8px;
}

@media (max-width: 540px) {
  .comparison { grid-template-columns: 1fr; }
}

.comp-cell {
  padding: 18px;
  border-radius: 10px;
  background: rgba(4, 8, 18, 0.4);
  border: 1px solid rgba(138, 154, 181, 0.12);
}

.comp-cell .c-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}

.comp-cell .c-value {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 24px;
  letter-spacing: -0.3px;
  font-variant-numeric: tabular-nums;
}

.comp-cell--before .c-value { color: var(--text); }
.comp-cell--after .c-value { color: var(--red); }

.takeaway {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: 12px;
  border-left: 2px solid var(--cyan);
  background: rgba(0, 229, 255, 0.03);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  text-wrap: pretty;
}

.takeaway .lead {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}

.takeaway ul {
  list-style: none;
  margin-top: 8px;
  padding: 0;
}

.takeaway li {
  padding: 4px 0 4px 22px;
  position: relative;
  color: var(--text-dim);
}

.takeaway li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--cyan);
}

/* ============================================================
   CTA
   ============================================================ */

.cta-section {
  padding: 60px 0 120px;
}

.cta-card {
  background:
    radial-gradient(ellipse 80% 100% at 100% 0%, rgba(0, 229, 255, 0.12), transparent 60%),
    var(--glass-strong);
  border: 1px solid var(--cyan-soft);
  border-radius: 20px;
  padding: 48px;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  box-shadow: 0 0 60px rgba(0, 229, 255, 0.08);
}

.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(0, 229, 255, 0.04));
  pointer-events: none;
}

@media (max-width: 720px) {
  .cta-card { grid-template-columns: 1fr; padding: 36px; }
}

.cta-text h2 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
  text-wrap: balance;
}

.cta-text p {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 480px;
  text-wrap: pretty;
}

.cta-meta {
  margin-top: 18px;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--text-faint);
  text-transform: uppercase;
}

.cta-meta span { display: flex; align-items: center; gap: 8px; }

.cta-meta span::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
}

/* ---------- Footer ---------- */

footer {
  padding: 32px 0 48px;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.6px;
}

footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--cyan); }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .step-head, .card { opacity: 1 !important; transform: none !important; }
  .pubkey-area.revealed { max-height: none; }
  .qc-orbits .qc-particle, .qc-orbits.running .qc-particle { animation: none !important; }
  .tx-arrow.active .pulse-dot { display: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Focus ring ---------- */

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}