/* ═══════════════════════════════════════════════════
   NUN — landing.css
   Studio Dark — paleta y tipografías del Design System
═══════════════════════════════════════════════════ */

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

:root {
  --bg-primary:    #12111A;
  --bg-secondary:  #1E1C2E;
  --bg-card:       #1E1C2E;
  --bg-hover:      #252240;
  --bg-elevated:   #2E2A4A;

  --accent:        #7F77DD;
  --accent-2:      #534AB7;
  --accent-3:      #AFA9EC;
  --accent-soft:   rgba(127,119,221,.15);

  --text-primary:  #F1EFE8;
  --text-secondary:#AFA9EC;
  --text-muted:    #6B658C;

  --border:        rgba(255,255,255,.07);
  --border-light:  rgba(255,255,255,.13);

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:  14px;
  --radius-xl:  20px;
  --radius-full: 9999px;

  --container-max: 1140px;
  --section-pad: 96px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { background: var(--bg-primary); color: var(--text-primary); -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Geist', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }

/* ─── Layout ───────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
.container.narrow { max-width: 760px; }

.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -.02em;
  text-align: center;
  margin-bottom: 18px;
  background: linear-gradient(180deg, #fff 0%, #C7C2EE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-sub {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-size: 16px;
}

/* ─── Top nav ──────────────────────────────────── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: rgba(18, 17, 26, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
}
.brand-glyph { display: block; }
.brand-name {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -.03em;
  color: var(--text-primary);
}
.topnav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-hover); }

/* ─── Botones ──────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 14px;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, transform .08s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-primary {
  background: var(--accent);
  color: #0d0c14;
}
.btn-primary:hover { background: var(--accent-3); }
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-light);
}
.btn-ghost:hover { background: var(--bg-hover); border-color: var(--accent); }
.btn-block { width: 100%; }

/* ─── Hero ─────────────────────────────────────── */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: clamp(48px, 9vw, 96px) 24px clamp(64px, 10vw, 120px);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 40% at 80% 20%, rgba(127,119,221,.18), transparent 70%),
    radial-gradient(50% 50% at 20% 80%, rgba(83,74,183,.12), transparent 70%);
  pointer-events: none;
  z-index: -1;
}
.hero-inner { max-width: 560px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--accent-soft);
  border: 1px solid rgba(127,119,221,.3);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--accent-3);
  margin-bottom: 24px;
}
.hero-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.05;
  letter-spacing: -.035em;
  margin-bottom: 18px;
  background: linear-gradient(180deg, #fff 0%, #C7C2EE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  color: var(--text-secondary);
  font-size: clamp(16px, 1.6vw, 18px);
  margin-bottom: 32px;
  max-width: 480px;
}

/* ─── Hero CTA ─────────────────────────────────── */
.btn-lg { padding: 14px 28px; font-size: 15px; }

/* ─── Form fields (página /registro) ───────────── */
.waitlist-modal-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}
.field-label .req { color: var(--accent); }
.field-label .opt { color: var(--text-muted); font-weight: 400; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"] {
  padding: 11px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s, background .15s;
}
.field input:focus {
  outline: none;
  border-color: var(--accent);
}
.field input::placeholder { color: var(--text-muted); }
.field input:invalid:not(:placeholder-shown) {
  border-color: rgba(229,107,107,.6);
}

.field-check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  cursor: pointer;
  margin-top: 2px;
}
.field-check input[type="checkbox"] {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--accent);
  cursor: pointer;
}

.field-error {
  color: #e56b6b;
  font-size: 12px;
  min-height: 16px;
}

/* ─── Estado de éxito ─────────────────────────── */
.waitlist-success {
  text-align: center;
  padding: 16px 0 8px;
}
.waitlist-success svg {
  color: var(--accent);
  margin-bottom: 12px;
}
.waitlist-success h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.waitlist-success p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 18px;
  max-width: 360px;
  margin-inline: auto;
}

/* ─── Hero visual (mock board) ─────────────────── */
.hero-visual {
  position: relative;
}
.mock-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.45);
}
.mock-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mock-col-header {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 4px 6px 8px;
  border-bottom: 1px solid var(--border);
}
.mock-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  position: relative;
}
.mock-card-title { font-size: 12px; font-weight: 500; }
.mock-card-meta  { font-size: 10px; color: var(--text-muted); }
.mock-card.playing { border-color: var(--accent); }
.mock-eq {
  display: inline-flex;
  align-items: end;
  gap: 2px;
  position: absolute;
  top: 8px; right: 8px;
  height: 12px;
}
.mock-eq span {
  display: block;
  width: 2px;
  background: var(--accent);
  border-radius: 1px;
  animation: eq 1s ease-in-out infinite;
}
.mock-eq span:nth-child(1) { height: 6px;  animation-delay: 0s; }
.mock-eq span:nth-child(2) { height: 12px; animation-delay: .15s; }
.mock-eq span:nth-child(3) { height: 8px;  animation-delay: .3s; }
@keyframes eq {
  0%, 100% { transform: scaleY(.5); }
  50%      { transform: scaleY(1); }
}

/* ─── Problem ──────────────────────────────────── */
.problem {
  padding: var(--section-pad) 0;
  background:
    linear-gradient(180deg, transparent, rgba(127,119,221,.04), transparent);
}
.problem-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 16px;
  color: var(--text-secondary);
}
.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.problem-icon {
  flex-shrink: 0;
  color: var(--accent-3);
  margin-top: 2px;
}
.problem-list code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-3);
  font-size: 13px;
}

/* ─── How it works ─────────────────────────────── */
.how { padding: var(--section-pad) 0; }
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.how-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
}
.how-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 14px;
}
.how-step h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 8px;
}
.how-step p { color: var(--text-secondary); font-size: 14px; }

/* ─── Features ─────────────────────────────────── */
.features {
  padding: var(--section-pad) 0;
  background:
    linear-gradient(180deg, transparent, rgba(127,119,221,.04), transparent);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-md);
  margin-bottom: 4px;
}
.feature-icon svg { display: block; }
.feature h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 15px;
}
.feature p { color: var(--text-secondary); font-size: 13px; line-height: 1.5; }
/* ── AI feature card (Audio Intelligence) ── */
.feature-ai {
  position: relative;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(127,119,221,.18), transparent 60%),
    var(--bg-secondary);
  border: 1px solid transparent;
  background-clip: padding-box;
  overflow: hidden;
  isolation: isolate;
}
/* Borde con gradiente animado */
.feature-ai::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(
    from 0deg,
    rgba(127,119,221,.6),
    rgba(175,169,236,.9),
    rgba(83,74,183,.5),
    rgba(127,119,221,.6)
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  animation: ai-rotate 8s linear infinite;
  pointer-events: none;
  z-index: 0;
}
.feature-ai > * { position: relative; z-index: 1; }
@keyframes ai-rotate {
  to { transform: rotate(360deg); }
}
/* Glow sutil exterior */
.feature-ai::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(60% 60% at 50% 0%, rgba(127,119,221,.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Badge "Audio Intelligence" */
.ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-3);
  background: rgba(127,119,221,.12);
  border: 1px solid rgba(127,119,221,.4);
  border-radius: var(--radius-full);
  align-self: flex-start;
  margin-bottom: 4px;
}
.ai-badge svg {
  animation: ai-twinkle 2.4s ease-in-out infinite;
}

/* Icon container con sparkles posicionados */
.ai-icon {
  position: relative;
  background: linear-gradient(135deg, rgba(127,119,221,.25), rgba(175,169,236,.15));
  border: 1px solid rgba(127,119,221,.3);
  width: 44px;
  height: 44px;
  overflow: visible;
}
.ai-sparkle {
  color: var(--accent-3);
  position: absolute;
  filter: drop-shadow(0 0 4px rgba(175,169,236,.7));
}
.ai-sparkle-main {
  color: #C7C2EE;
  filter: drop-shadow(0 0 6px rgba(175,169,236,.9));
  animation: ai-twinkle 2.4s ease-in-out infinite;
}
.ai-sparkle-sm-1 {
  top: -4px;
  right: -6px;
  animation: ai-twinkle 1.8s ease-in-out infinite;
  animation-delay: .4s;
}
.ai-sparkle-sm-2 {
  bottom: -2px;
  left: -4px;
  animation: ai-twinkle 2.1s ease-in-out infinite;
  animation-delay: .9s;
}
@keyframes ai-twinkle {
  0%, 100% { opacity: .35; transform: scale(.85) rotate(0deg); }
  50%      { opacity: 1;   transform: scale(1.1) rotate(20deg); }
}

/* Tag "Próximamente" */
.feature-tag {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 6px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
}

/* ─── Pricing ──────────────────────────────────── */
.pricing { padding: var(--section-pad) 0; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 980px;
  margin: 0 auto;
}
.plan {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan-featured {
  border-color: var(--accent);
  box-shadow: 0 10px 40px -10px rgba(127,119,221,.4);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #0d0c14;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.plan-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-3);
  margin-bottom: 14px;
}
.plan-price {
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.plan-amount {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 36px;
  letter-spacing: -.02em;
  color: var(--text-primary);
}
.plan-period {
  color: var(--text-muted);
  font-size: 14px;
}
.plan-tagline {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 22px;
}
.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  flex: 1;
}
.plan-features li {
  font-size: 13px;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}
.plan-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ─── FAQ ──────────────────────────────────────── */
.faq { padding: var(--section-pad) 0; }
.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-family: 'Syne', sans-serif;
  font-weight: 500;
  font-size: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  color: var(--accent);
  font-size: 22px;
  line-height: 1;
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 20px 20px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ─── Footer ───────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  margin-top: 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  text-align: center;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 16px;
}
.footer-brand span { color: var(--text-primary); letter-spacing: -.02em; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
  transition: color .15s;
}
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  color: var(--text-muted);
  font-size: 12px;
}

/* ─── Responsive ───────────────────────────────── */
@media (max-width: 960px) {
  :root { --section-pad: 64px; }
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero-inner { margin: 0 auto; }
  .waitlist-form { margin: 0 auto; }
  .hero-visual { max-width: 540px; margin: 0 auto; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .how-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }
}

@media (max-width: 540px) {
  .topnav { padding: 12px 16px; }
  .nav-link { display: none; }
  .container { padding: 0 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .mock-board { padding: 10px; gap: 8px; }
  .mock-card { padding: 8px; }
}