/* ==========================================================================
   CAYBE — Sistema de diseño
   Paleta: negro profundo, grafito, un solo acento morado, plata.
   Tipografía: Inter en todo el sitio (400, 500, 600, 700).
   ========================================================================== */

:root {
  --bg: #05030A;
  --bg-2: #0E0B16;
  --bg-3: #15111F;
  --line: rgba(241, 241, 245, 0.08);
  --line-strong: rgba(241, 241, 245, 0.16);
  --accent: #6D28D9;
  --accent-2: #8B5CF6;
  --accent-soft: rgba(139, 92, 246, 0.16);
  --silver: #C0C0C8;
  --silver-2: #F1F1F5;
  --muted: #8E8E98;
  --muted-2: #5F5F6A;
  --ok: #C0C0C8;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-serif: var(--font-sans); /* compatibilidad: todo el sitio usa una sola familia */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --max: 1180px;
  --nav-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .reveal { opacity: 1 !important; transform: none !important; transition: none !important; } }

body {
  margin: 0; background: var(--bg); color: var(--silver-2);
  font-family: var(--font-sans); font-size: 17px; font-weight: 400; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 6px;
}
::selection { background: var(--accent); color: #fff; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 14px; z-index: 100; border-radius: 8px; }
.skip:focus { left: 8px; }

/* Tipografía */
h1, h2, h3, h4, .serif { font-family: var(--font-sans); font-weight: 700; font-style: normal; letter-spacing: -0.01em; line-height: 1.15; margin: 0; color: var(--silver-2); }
h1 em, h2 em, h3 em, blockquote em, .serif em { font-style: normal; font-weight: 700; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); line-height: 1.3; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--silver); max-width: 56ch; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.eyebrow, .label {
  font-family: var(--font-sans); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; text-transform: none; color: var(--muted);
}
.eyebrow { color: var(--accent-2); margin-bottom: 14px; display: block; }
.accent { color: var(--accent-2); }
.silver-text { background: linear-gradient(120deg, #F1F1F5, #C0C0C8 50%, #8E8E98); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Layout */
.container { width: min(100% - 40px, var(--max)); margin-inline: auto; }
.section { padding: clamp(72px, 10vw, 128px) 0; position: relative; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head p { color: var(--silver); font-size: 1.05rem; }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.center { text-align: center; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 28px; } .mt-4 { margin-top: 44px; }
.mb-0 { margin-bottom: 0; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px; border: 1px solid var(--line-strong);
  font-family: var(--font-sans); font-size: 0.95rem; font-weight: 600; letter-spacing: 0; text-transform: none;
  color: var(--silver-2); background: transparent; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--silver); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; color: #fff; box-shadow: 0 10px 30px rgba(109, 40, 217, 0.35); }
.btn-primary:hover { box-shadow: 0 14px 40px rgba(139, 92, 246, 0.45); border-color: transparent; }
.btn-ghost { border-color: transparent; color: var(--silver); }
.btn-ghost:hover { color: var(--silver-2); border-color: var(--line-strong); }
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }
.btn-lg { padding: 18px 34px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; transform: none; }
.ic { width: 20px; height: 20px; flex: none; }
.ic-sm { width: 16px; height: 16px; }
.ic-lg { width: 28px; height: 28px; }

/* Tarjetas y glass */
.card {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  position: relative; transition: border-color .25s ease, transform .25s ease;
}
.card:hover { border-color: var(--line-strong); }
.glass {
  background: rgba(14, 11, 22, 0.72); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--line-strong); box-shadow: var(--shadow), inset 0 1px 0 rgba(241,241,245,0.06);
}
.card-icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-2); margin-bottom: 20px; border: 1px solid rgba(139,92,246,.25); }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--silver); margin-bottom: 18px; }
.card .btn { margin-top: auto; }
.card-flex { display: flex; flex-direction: column; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0; text-transform: none; border: 1px solid var(--line-strong); color: var(--silver); }
.tag-accent { border-color: rgba(139,92,246,.5); color: var(--accent-2); background: var(--accent-soft); }
.tag-warn { border-color: rgba(192,192,200,.35); color: var(--silver); background: rgba(192,192,200,.06); }
.divider { height: 1px; background: var(--line); margin: 24px 0; }

/* Navegación */
.nav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); display: flex; align-items: center; background: rgba(5, 3, 10, 0.75); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.nav-logo img { height: 40px; width: auto; }
.nav-links { display: none; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { padding: 10px 13px; font-size: 0.95rem; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--silver); border-radius: 8px; transition: color .2s; }
.nav-links a:hover { color: var(--silver-2); }
.nav-cta { display: none; gap: 8px; align-items: center; }
.nav-toggle { display: inline-flex; background: none; border: 1px solid var(--line-strong); color: var(--silver-2); border-radius: 10px; padding: 8px; cursor: pointer; }
.nav-mobile { display: none; position: fixed; inset: var(--nav-h) 0 0 0; background: var(--bg); z-index: 49; padding: 24px 20px; flex-direction: column; gap: 6px; overflow: auto; }
.nav-mobile.open { display: flex; }
.nav-mobile a { padding: 14px 12px; font-size: 1rem; font-weight: 500; letter-spacing: 0; text-transform: none; border-bottom: 1px solid var(--line); }
.nav-mobile .btn { margin-top: 16px; }
@media (min-width: 1024px) {
  .nav-links, .nav-cta { display: flex; }
  .nav-toggle { display: none; }
}

/* Hero con aurora */
.hero { position: relative; overflow: hidden; padding: clamp(56px, 8vw, 96px) 0 clamp(64px, 8vw, 110px); isolation: isolate; }
.aurora { position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1; pointer-events: none; filter: blur(70px); opacity: .9; }
.aurora::before, .aurora::after, .aurora i { content: ""; position: absolute; border-radius: 50%; }
.aurora::before { width: 60vw; height: 60vw; max-width: 820px; max-height: 820px; left: 5%; top: -10%; background: radial-gradient(circle at 40% 40%, rgba(109,40,217,.55), rgba(109,40,217,0) 62%); }
.aurora::after { width: 46vw; height: 46vw; max-width: 640px; max-height: 640px; right: -4%; top: 8%; background: radial-gradient(circle, rgba(139,92,246,.42), rgba(139,92,246,0) 60%); }
.aurora i { width: 34vw; height: 34vw; max-width: 460px; max-height: 460px; left: 48%; top: 40%; background: radial-gradient(circle, rgba(20,120,120,.18), rgba(20,120,120,0) 60%); }
.aurora i + i { left: 18%; top: 62%; background: radial-gradient(circle, rgba(150,120,40,.10), rgba(150,120,40,0) 60%); }
.hero-grid { display: grid; gap: 44px; align-items: center; }
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1.05fr 1fr; gap: 60px; } }
.hero h1 { margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--accent-2); }
.hero .lead { margin-bottom: 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.philosophy-mini { margin-top: 36px; padding-left: 18px; border-left: 2px solid var(--accent); color: var(--silver); font-family: var(--font-sans); font-size: 1.1rem; font-style: normal; max-width: 46ch; }

/* Chat */
.chat { border-radius: 22px; padding: 0; overflow: hidden; display: flex; flex-direction: column; min-height: 520px; max-height: min(78vh, 720px); }
.chat-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.chat-brand { display: flex; align-items: center; gap: 12px; }
.chat-brand img { width: 30px; height: 30px; }
.chat-brand strong { font-size: 1rem; font-weight: 600; letter-spacing: 0; text-transform: none; }
.chat-status { font-size: 0.82rem; letter-spacing: 0; text-transform: none; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.chat-status .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 4px var(--accent-soft); }
.chat-demo { background: rgba(192,192,200,.08); border: 1px solid var(--line-strong); color: var(--silver); font-size: 0.75rem; padding: 10px 20px; line-height: 1.4; }
.chat-demo strong { color: var(--silver-2); letter-spacing: 0; text-transform: none; font-size: 0.85rem; font-weight: 600; }
.chat-body { flex: 1; overflow-y: auto; padding: 22px 20px; display: flex; flex-direction: column; gap: 14px; scroll-behavior: smooth; }
.msg { max-width: 88%; padding: 13px 16px; border-radius: 16px; font-size: 0.97rem; line-height: 1.55; animation: msgIn .35s ease both; white-space: pre-wrap; word-wrap: break-word; }
.msg-bot { align-self: flex-start; background: var(--bg-3); border: 1px solid var(--line); border-bottom-left-radius: 6px; color: var(--silver-2); }
.msg-user { align-self: flex-end; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border-bottom-right-radius: 6px; }
.msg-sys { align-self: center; font-size: .78rem; color: var(--muted); text-align: center; }
@keyframes msgIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.typing { display: inline-flex; gap: 5px; padding: 14px 16px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--silver); opacity: .4; animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; } .typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
.chat-help { padding: 0 20px 10px; font-size: .85rem; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 20px 14px; }
.chip { border: 1px solid var(--line-strong); background: transparent; color: var(--silver); border-radius: 999px; padding: 8px 14px; font-size: .8rem; cursor: pointer; font-family: inherit; transition: border-color .2s, color .2s, background .2s; }
.chip:hover { border-color: var(--accent-2); color: var(--silver-2); background: var(--accent-soft); }
.chat-form { display: flex; gap: 10px; padding: 14px 16px 16px; border-top: 1px solid var(--line); background: rgba(5,3,10,.4); }
.chat-input { flex: 1; min-height: 52px; max-height: 140px; resize: none; background: var(--bg-3); border: 1px solid var(--line-strong); color: var(--silver-2); border-radius: 14px; padding: 14px 16px; font: inherit; font-size: 1rem; line-height: 1.4; }
.chat-input::placeholder { color: var(--muted); }
.chat-send { width: 52px; height: 52px; flex: none; border-radius: 14px; border: none; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; display: grid; place-items: center; cursor: pointer; transition: transform .2s, box-shadow .2s; }
.chat-send:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(139,92,246,.4); }
.chat-send[disabled] { opacity: .5; cursor: progress; transform: none; }

/* Vista previa de campaña (dentro del chat) */
.preview { align-self: stretch; background: var(--bg-2); border: 1px solid rgba(139,92,246,.4); border-radius: 16px; padding: 18px; margin-top: 4px; animation: msgIn .4s ease both; }
.preview-head { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-bottom: 12px; }
.preview-head h4 { margin: 0; font-family: var(--font-sans); font-size: 1.15rem; font-weight: 700; }
.preview dl { display: grid; grid-template-columns: 1fr; gap: 10px 16px; margin: 0 0 14px; }
@media (min-width: 560px) { .preview dl { grid-template-columns: 1fr 1fr; } }
.preview dt { font-size: .8rem; letter-spacing: 0; text-transform: none; color: var(--muted); margin-bottom: 3px; }
.preview dd { margin: 0; font-size: .92rem; color: var(--silver-2); }
.ad-mock { border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: var(--bg); margin-bottom: 14px; }
.ad-mock .ad-brand { font-size: .82rem; letter-spacing: 0; text-transform: none; color: var(--muted); margin-bottom: 8px; }
.ad-mock .ad-head { font-weight: 600; color: var(--silver-2); margin-bottom: 4px; }
.ad-mock .ad-text { font-size: .9rem; color: var(--silver); margin-bottom: 10px; }
.ad-mock .ad-cta { display: inline-block; padding: 6px 12px; border-radius: 6px; background: var(--accent-soft); border: 1px solid rgba(139,92,246,.4); font-size: .85rem; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--accent-2); }
.preview-note { font-size: .78rem; color: var(--muted); margin: 10px 0 0; }

/* Pasos */
.steps { display: grid; gap: 20px; }
@media (min-width: 820px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, rgba(14,11,22,.9), rgba(14,11,22,.5)); }
.step-n { font-family: var(--font-sans); font-size: 2.3rem; font-weight: 700; line-height: 1; color: var(--accent-2); margin-bottom: 18px; font-style: normal; }
.step h3 { font-size: 1.2rem; margin-bottom: 6px; }
.step p { color: var(--silver); margin: 0; }

/* Demo de producto (cómo funciona) */
.demo { display: grid; gap: 32px; align-items: center; }
@media (min-width: 1024px) { .demo { grid-template-columns: 1fr 1.1fr; gap: 60px; } }
.demo-screen { border-radius: 20px; overflow: hidden; }
.demo-bar { display: flex; gap: 6px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.demo-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--muted-2); }
.demo-flow { padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.demo-flow .msg { font-size: .88rem; }
.demo-flow .tick { align-self: center; display: flex; align-items: center; gap: 8px; font-size: .85rem; letter-spacing: 0; text-transform: none; color: var(--accent-2); padding: 6px 0; }
.demo-stages { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.demo-stages span { font-size: .85rem; letter-spacing: 0; text-transform: none; padding: 7px 14px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--silver); }
.demo-stages span.on { border-color: var(--accent-2); color: var(--accent-2); background: var(--accent-soft); }

/* Filosofía */
.philosophy { background: linear-gradient(180deg, var(--bg-2), var(--bg)); text-align: center; }
.philosophy blockquote { margin: 0 auto; max-width: 24ch; font-family: var(--font-sans); font-size: clamp(1.7rem, 4.4vw, 3rem); line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
.philosophy blockquote em { font-style: normal; color: var(--accent-2); }
.philosophy .lead { margin: 28px auto 0; text-align: center; }

/* Dashboard mockup */
.dash { border-radius: 20px; overflow: hidden; }
.dash-top { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: .85rem; letter-spacing: 0; text-transform: none; color: var(--muted); }
.dash-body { padding: 18px; display: grid; gap: 14px; }
.kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (min-width: 640px) { .kpis { grid-template-columns: repeat(4, 1fr); } }
.kpi { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.kpi .label { font-size: .62rem; margin-bottom: 8px; display: block; }
.kpi .val { font-family: var(--font-sans); font-weight: 700; font-size: 1.5rem; color: var(--silver-2); line-height: 1; }
.kpi .sub { font-size: .72rem; color: var(--muted); margin-top: 6px; }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 110px; padding: 14px; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; }
.bars i { flex: 1; background: linear-gradient(180deg, var(--accent-2), var(--accent)); border-radius: 4px 4px 0 0; opacity: .85; min-height: 8px; }
.bars i:nth-child(odd) { background: linear-gradient(180deg, #C0C0C8, #5F5F6A); opacity: .6; }
.dash-list { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 6px 14px; font-size: .85rem; }
.dash-list div { display: flex; justify-content: space-between; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.dash-list div:last-child { border-bottom: 0; }
.example-note { display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; letter-spacing: 0; text-transform: none; color: var(--muted); padding: 8px 14px; border: 1px dashed var(--line-strong); border-radius: 999px; }

/* Planes */
.plans { display: grid; gap: 20px; align-items: stretch; }
@media (min-width: 900px) { .plans { grid-template-columns: repeat(3, 1fr); } }
.plan { display: flex; flex-direction: column; padding: 32px 28px; }
.plan.recommended { border-color: rgba(139,92,246,.75); box-shadow: 0 0 0 1px rgba(139,92,246,.4), 0 24px 60px rgba(109,40,217,.25); }
.plan .ribbon { position: absolute; top: -13px; left: 28px; }
.plan-name { font-size: 1rem; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--silver); margin-bottom: 12px; }
.plan-price { font-family: var(--font-sans); font-weight: 700; font-size: 2.4rem; color: var(--silver-2); line-height: 1.05; letter-spacing: -0.02em; }
.plan-price small { font-family: var(--font-sans); font-size: .9rem; font-weight: 400; color: var(--muted); letter-spacing: 0; }
.plan-tagline { color: var(--silver); margin: 10px 0 20px; min-height: 2.6em; }
.plan ul { list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.plan li { display: flex; gap: 10px; align-items: flex-start; font-size: .93rem; color: var(--silver); }
.plan li .ic { width: 16px; height: 16px; margin-top: 4px; color: var(--accent-2); }
.plan-limits { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 22px; }
.plan-limits div { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.plan-limits .label { font-size: .58rem; display: block; margin-bottom: 4px; }
.plan-limits strong { font-size: .95rem; color: var(--silver-2); }
.plan .btn { margin-top: auto; }
.iva-note { text-align: center; color: var(--muted); font-size: .85rem; margin-top: 22px; }

/* Modelo de cobro */
.billing-blocks { display: grid; gap: 20px; }
@media (min-width: 900px) { .billing-blocks { grid-template-columns: 1fr 1fr; } }
.billing-main { padding: 36px; }
.billing-main h3 { font-size: 1.6rem; margin-bottom: 12px; }
.billing-main .big-note { margin-top: 20px; padding: 14px 18px; border-radius: 12px; background: var(--accent-soft); border: 1px solid rgba(139,92,246,.45); color: var(--silver-2); font-weight: 600; display: flex; gap: 10px; align-items: center; }
.billing-small { display: grid; gap: 16px; margin-top: 20px; }
@media (min-width: 820px) { .billing-small { grid-template-columns: repeat(3, 1fr); } }
.billing-small .card { padding: 22px; }
.billing-small h3 { font-size: 1.1rem; }

/* Casos de uso */
.usecase { padding: 26px; }
.usecase .card-icon { margin-bottom: 14px; }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 0; display: flex; justify-content: space-between; gap: 16px; align-items: center; font-family: var(--font-sans); font-weight: 600; font-size: 1.1rem; color: var(--silver-2); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ic { color: var(--accent-2); transition: transform .25s; }
.faq details[open] summary .ic { transform: rotate(45deg); }
.faq details p { color: var(--silver); padding: 0 0 22px; max-width: 64ch; }

/* CTA final */
.cta-final { position: relative; overflow: hidden; text-align: center; padding: clamp(90px, 12vw, 150px) 0; }
.cta-final .aurora { inset: -30% 0 auto; opacity: .8; }
.cta-final h2 { max-width: 20ch; margin: 0 auto 32px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 56px 0 32px; color: var(--silver); font-size: .9rem; }
.footer-grid { display: grid; gap: 32px; }
@media (min-width: 820px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.footer img { height: 44px; width: auto; margin-bottom: 14px; }
.footer h4 { font-size: .9rem; font-weight: 600; letter-spacing: 0; text-transform: none; color: var(--muted); margin: 0 0 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 9px; }
.footer a:hover { color: var(--silver-2); }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }

/* Formularios */
.form { display: flex; flex-direction: column; gap: 16px; }
.field label { display: block; font-size: .88rem; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--muted); margin-bottom: 8px; }
.input, .select, .textarea { width: 100%; background: var(--bg-3); border: 1px solid var(--line-strong); color: var(--silver-2); border-radius: 12px; padding: 13px 15px; font: inherit; font-size: 1rem; }
.input::placeholder, .textarea::placeholder { color: var(--muted-2); }
.textarea { min-height: 120px; resize: vertical; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--silver) 50%), linear-gradient(135deg, var(--silver) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; color: var(--silver); }
.check input { margin-top: 4px; accent-color: var(--accent-2); }
.alert { padding: 14px 18px; border-radius: 12px; border: 1px solid var(--line-strong); background: var(--bg-2); color: var(--silver-2); font-size: .93rem; display: flex; gap: 10px; align-items: flex-start; }
.alert-success { border-color: rgba(139,92,246,.5); background: var(--accent-soft); }
.alert-error { border-color: rgba(241,241,245,.3); }
.alert ul { margin: 0; padding-left: 18px; }

/* Auth */
.auth { min-height: 100vh; display: grid; place-items: center; padding: 40px 20px; position: relative; overflow: hidden; }
.auth-card { width: min(100%, 460px); padding: 40px 36px; border-radius: 22px; }
.auth-card .nav-logo img { height: 44px; margin: 0 auto 24px; }
.auth-card h1 { font-size: 1.7rem; margin-bottom: 8px; text-align: center; }
.auth-card .muted { text-align: center; margin-bottom: 24px; }
.auth-foot { text-align: center; margin-top: 20px; font-size: .9rem; color: var(--silver); }

/* Animaciones de scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .1s; } .reveal-d2 { transition-delay: .2s; } .reveal-d3 { transition-delay: .3s; }

/* Toast / flash */
.flash { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 90; max-width: min(92vw, 560px); animation: msgIn .4s ease; }

/* Botón de Google */
.btn-google { gap: 12px; }
.btn-google .ic { width: 22px; height: 22px; background: #fff; border-radius: 50%; padding: 2px; }
.auth-card .check { font-size: .88rem; color: var(--muted); }
.auth-card .check a { color: var(--accent-2); }

/* Tarjetas de acciones de la IA dentro del chat */
.ai-card { align-self: stretch; background: var(--bg-2); border: 1px solid rgba(139,92,246,.35); border-radius: 16px; padding: 16px 18px; margin-top: 4px; animation: msgIn .4s ease both; }
.ai-card h5 { margin: 0 0 10px; font-size: .95rem; font-weight: 600; color: var(--silver-2); display: flex; align-items: center; gap: 8px; }
.ai-card h5 .ic { width: 16px; height: 16px; color: var(--accent-2); }
.ai-card ul { margin: 0; padding-left: 18px; color: var(--silver); font-size: .9rem; display: flex; flex-direction: column; gap: 6px; }
.ai-card .mini { font-size: .84rem; color: var(--muted); margin-top: 10px; }
.ai-card .ab { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; background: var(--bg); }
.ai-card .ab strong { display: block; color: var(--silver-2); font-size: .92rem; }
.ai-card .ab span { font-size: .86rem; color: var(--silver); }
.ai-tool { align-self: flex-start; display: inline-flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--muted); padding: 6px 2px; }
.ai-tool .sp { width: 12px; height: 12px; border: 2px solid var(--accent-soft); border-top-color: var(--accent-2); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Aviso de cookies */
.cookies { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 95; width: min(92vw, 640px); display: flex; gap: 14px; align-items: center; flex-wrap: wrap; justify-content: space-between; padding: 16px 20px; }
.cookies p { margin: 0; font-size: .9rem; color: var(--silver); flex: 1 1 280px; }
.cookies .row { gap: 8px; }