/* ==========================================================================
   VibraAssist — Design System
   Dark base · Teal #00E6C3 · Violet #7C5CFF · Space Grotesk / JetBrains Mono
   ========================================================================== */

:root {
  --bg: #06070A;
  --bg-elevated: #0B0D12;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-border: rgba(255, 255, 255, 0.08);
  --teal: #00E6C3;
  --violet: #7C5CFF;
  --text: #EDEFF3;
  --text-dim: #9AA0AC;
  --text-faint: #5C6270;
  --success: #00E6C3;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius: 16px;
  --radius-sm: 10px;
  --container: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 900px 500px at 12% -5%, rgba(124, 92, 255, 0.16), transparent 60%),
    radial-gradient(ellipse 900px 600px at 88% 15%, rgba(0, 230, 195, 0.10), transparent 60%);
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

::selection { background: var(--teal); color: #06070A; }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Typography ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

h1 { font-size: clamp(38px, 5.4vw, 68px); font-weight: 700; }
h2 { font-size: clamp(28px, 3.6vw, 42px); }
h3 { font-size: 21px; }

p { color: var(--text-dim); }

.lede {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--text-dim);
  max-width: 620px;
  line-height: 1.65;
}

.gradient-text {
  background: linear-gradient(100deg, var(--teal), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.06em;
}

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

.section {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

@media (max-width: 720px) {
  .section { padding: 76px 0; }
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(6, 7, 10, 0.72);
  border-bottom: 1px solid var(--surface-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  max-width: var(--container);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo b { color: var(--teal); }
.logo span.assist { color: #F27A1E; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-dim);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-links a.active { color: var(--teal); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px 20px;
  border-radius: 100px;
  background: var(--teal);
  color: #06070A;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0, 230, 195, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

@media (max-width: 860px) {
  .nav-links { 
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--surface-border);
    padding: 24px 32px;
    gap: 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: 100px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--teal);
  color: #06070A;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0, 230, 195, 0.3); }

.btn-ghost {
  background: transparent;
  border-color: var(--surface-border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }

.btn-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }

/* ---------- Cards / Glassmorphism ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.card:hover {
  border-color: rgba(0, 230, 195, 0.35);
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.06);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0,230,195,0.18), rgba(124,92,255,0.18));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--teal);
}

.grid {
  display: grid;
  gap: 24px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- Waveform (signature element) ---------- */

.waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 40px;
}

.waveform span {
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--teal), var(--violet));
  animation: wave 1.2s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% { transform: scaleY(0.3); opacity: 0.6; }
  50% { transform: scaleY(1); opacity: 1; }
}

.hero-waveform {
  height: 120px;
  gap: 5px;
}
.hero-waveform span {
  width: 4px;
  background: linear-gradient(180deg, var(--teal), var(--violet));
  box-shadow: 0 0 14px rgba(0, 230, 195, 0.25);
}

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

.hero {
  padding: 100px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero h1 { margin-bottom: 22px; }

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  color: var(--teal);
}
.stat-label {
  font-size: 13px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  margin-top: 4px;
}

.hero-visual {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 20px;
  padding: 40px 32px;
  backdrop-filter: blur(10px);
}

/* ---------- Method steps (V.I.B.R.A.) ---------- */

.vibra-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

@media (max-width: 900px) {
  .vibra-track { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .vibra-track { grid-template-columns: 1fr; }
}

.vibra-step {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 26px 20px;
  background: var(--surface);
  position: relative;
}

.vibra-letter {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--teal);
  margin-bottom: 14px;
  display: block;
}

.vibra-step h4 { font-size: 16px; margin-bottom: 8px; }
.vibra-step p { font-size: 13.5px; }

/* ---------- Tech flow ---------- */

.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.flow-node {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 28px 26px;
  text-align: center;
  min-width: 170px;
}

.flow-node .mono-tag { display: block; margin-bottom: 10px; }

.flow-arrow {
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 22px;
  padding: 0 18px;
}

@media (max-width: 760px) {
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); padding: 10px 0; }
}

/* ---------- Pricing ---------- */

.price-card {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  background: var(--surface);
  position: relative;
}

.price-card.featured {
  border-color: var(--teal);
  background: linear-gradient(180deg, rgba(0,230,195,0.06), rgba(124,92,255,0.04));
}

.price-card.featured::before {
  content: 'RECOMENDADO';
  position: absolute;
  top: -12px;
  left: 32px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  background: var(--teal);
  color: #06070A;
  padding: 5px 12px;
  border-radius: 100px;
  font-weight: 700;
}

.price-value {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  margin: 14px 0 4px;
}
.price-value span { font-size: 14px; color: var(--text-faint); font-weight: 500; }

.price-list { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.price-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-dim);
}
.price-list li::before {
  content: '✓';
  color: var(--teal);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* ---------- Table ---------- */

table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 16px 18px;
  border-bottom: 1px solid var(--surface-border);
  font-size: 14px;
}
th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 500;
}
td { color: var(--text-dim); }
td:first-child { color: var(--text); font-weight: 500; }

/* ---------- CTA band ---------- */

.cta-band {
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  background: radial-gradient(ellipse at top, rgba(124,92,255,0.12), transparent 70%);
  position: relative;
  overflow: hidden;
}

.cta-band h2 { margin-bottom: 16px; }
.cta-band p { max-width: 480px; margin: 0 auto 32px; }

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

.footer {
  border-top: 1px solid var(--surface-border);
  padding: 56px 0 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-links {
  display: flex;
  gap: 28px;
  font-size: 13.5px;
  color: var(--text-dim);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--surface-border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- WhatsApp floating button ---------- */

.wa-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 200;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(0, 230, 195, 0.35);
  transition: transform 0.2s ease;
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 28px; height: 28px; }

/* ---------- Page header (interior pages) ---------- */

.page-header {
  padding: 64px 0 20px;
}

/* ---------- Reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}