/* Zuleny NL→SQL — sistema de diseño compartido (inicio, demo, precios) */
:root {
  --bg: #f7f8fb;
  --bg-alt: #eef1f7;
  --surface: #ffffff;
  --surface-2: #f3f5fa;
  --text: #0f1729;
  --text-2: #3b4559;
  --muted: #687389;
  --border: #e2e6ef;
  --border-strong: #cfd5e2;
  --brand: #5b4cf0;
  --brand-2: #8b5cf6;
  --brand-3: #06b6d4;
  --brand-ink: #4338ca;
  --brand-soft: #eeecff;
  --ok: #0f8a5f;
  --ok-soft: #e3f6ee;
  --warn: #b45309;
  --warn-soft: #fff4e2;
  --bad: #d92d20;
  --bad-soft: #fdecea;
  --code-bg: #0c1222;
  --code-border: #1e2840;
  --code-text: #dbe3f4;
  --kw: #8ab4ff; --str: #ffab91; --num: #ffd479; --id: #c9a7ff; --param: #7ee2a8;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px -8px rgba(16, 24, 40, .12);
  --shadow-lg: 0 2px 4px rgba(16, 24, 40, .04), 0 24px 60px -16px rgba(32, 24, 120, .28);
  --radius: 14px;
  --radius-sm: 10px;
  --grad: linear-gradient(120deg, var(--brand) 0%, var(--brand-2) 45%, var(--brand-3) 100%);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  --nav-h: 64px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #080b14; --bg-alt: #0c1120; --surface: #0f1526; --surface-2: #141b2f;
    --text: #e8ecf5; --text-2: #b9c2d6; --muted: #8590a8; --border: #1f2740; --border-strong: #2c3655;
    --brand: #7c6cff; --brand-2: #a78bfa; --brand-3: #22d3ee; --brand-ink: #b4abff; --brand-soft: #1b1a3d;
    --ok: #34d399; --ok-soft: #0f2a22; --warn: #fbbf24; --warn-soft: #2c2210; --bad: #f87171; --bad-soft: #301617;
    --code-bg: #060912; --code-border: #1a2238;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -10px rgba(0, 0, 0, .6);
    --shadow-lg: 0 30px 80px -20px rgba(80, 60, 255, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #080b14; --bg-alt: #0c1120; --surface: #0f1526; --surface-2: #141b2f;
  --text: #e8ecf5; --text-2: #b9c2d6; --muted: #8590a8; --border: #1f2740; --border-strong: #2c3655;
  --brand: #7c6cff; --brand-2: #a78bfa; --brand-3: #22d3ee; --brand-ink: #b4abff; --brand-soft: #1b1a3d;
  --ok: #34d399; --ok-soft: #0f2a22; --warn: #fbbf24; --warn-soft: #2c2210; --bad: #f87171; --bad-soft: #301617;
  --code-bg: #060912; --code-border: #1a2238;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -10px rgba(0, 0, 0, .6);
  --shadow-lg: 0 30px 80px -20px rgba(80, 60, 255, .35);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font: 15.5px/1.6 var(--font); color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden;
}
img, svg { max-width: 100%; }
a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, kbd { font-family: var(--mono); font-variant-ligatures: none; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 6px; }
::selection { background: color-mix(in srgb, var(--brand) 30%, transparent); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .container { padding: 0 16px; } }

/* ---------- Navegación ---------- */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s, background .2s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav .container { display: flex; align-items: center; gap: 28px; height: 100%; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 30px; height: 30px; flex: none; }
.brand > span { white-space: nowrap; }
.brand small { font-weight: 600; font-size: 11px; color: var(--brand-ink); background: var(--brand-soft); padding: 2px 7px; border-radius: 999px; letter-spacing: .02em; }
.nav-links { display: flex; gap: 4px; }
.nav-links a { color: var(--text-2); font-weight: 500; font-size: 14.5px; padding: 7px 12px; border-radius: 8px; }
.nav-links a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--text); background: var(--surface-2); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }
.icon-btn svg { width: 17px; height: 17px; }
.lang-select {
  appearance: none; -webkit-appearance: none; height: 36px; padding: 0 28px 0 12px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none' stroke='%23687389' stroke-width='1.6'%3E%3Cpath d='M1 1l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 11px center;
  color: var(--text-2); font: 600 13px var(--font); cursor: pointer;
}
.nav-toggle { display: none; }
@media (max-width: 820px) {
  .nav-toggle { display: inline-grid; }
  .nav-links {
    position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 2px; padding: 10px 16px 16px;
    background: var(--bg); border-bottom: 1px solid var(--border); box-shadow: var(--shadow); display: none;
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 10px 12px; }
  .nav-tools .btn { display: none; }
}
@media (max-width: 480px) { .brand small { display: none; } .nav .container { gap: 12px; } }

/* ---------- Botones ---------- */
.btn {
  --b-bg: var(--surface); --b-fg: var(--text); --b-bd: var(--border-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap;
  height: 40px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--b-bd);
  background: var(--b-bg); color: var(--b-fg); font: 600 14.5px var(--font); cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s, border-color .15s;
}
.btn:hover { text-decoration: none; border-color: var(--text-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn svg { width: 16px; height: 16px; }
.btn-primary {
  --b-fg: #fff; --b-bd: transparent; background: var(--grad); background-size: 140% 100%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .1), 0 6px 18px -6px color-mix(in srgb, var(--brand) 70%, transparent);
}
.btn-primary:hover { border-color: transparent; background-position: 100% 0; box-shadow: 0 1px 2px rgba(0, 0, 0, .1), 0 10px 24px -6px color-mix(in srgb, var(--brand) 80%, transparent); }
.btn-ghost { --b-bg: transparent; --b-bd: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); border-color: transparent; color: var(--text); }
.btn-lg { height: 48px; padding: 0 24px; font-size: 15.5px; border-radius: 12px; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }

/* ---------- Tipografía y secciones ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--brand-ink);
  background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  padding: 5px 12px 5px 6px; border-radius: 999px;
}
.eyebrow .dot { background: var(--grad); color: #fff; font-size: 11px; padding: 2px 8px; border-radius: 999px; }
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head .kicker { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand-ink); }
h1, h2, h3, h4 { letter-spacing: -.022em; line-height: 1.15; margin: 0; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin: 10px 0 14px; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
@media (max-width: 640px) { .section { padding: 64px 0; } .section-head { margin-bottom: 36px; } }

/* ---------- Tarjetas ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.card-pad { padding: 20px; }

/* ---------- Código ---------- */
.code {
  background: var(--code-bg); color: var(--code-text); border: 1px solid var(--code-border); border-radius: 12px;
  font: 13.5px/1.7 var(--mono); font-variant-ligatures: none; padding: 16px 18px; margin: 0; overflow-x: auto; white-space: pre-wrap; word-break: break-word;
}
.code .kw { color: var(--kw); font-weight: 600; } .code .str { color: var(--str); } .code .num { color: var(--num); }
.code .id { color: var(--id); } .code .param { color: var(--param); font-weight: 600; } .code .cm { color: #6b7896; font-style: italic; }
.code .ty { color: #7ee2d6; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 48px 0 36px; color: var(--muted); font-size: 14px; background: var(--bg); }
.footer .cols { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 32px; }
.footer h4 { font-size: 13px; color: var(--text); margin-bottom: 12px; letter-spacing: 0; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--text); }
.footer .legal { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; }
@media (max-width: 760px) { .footer .cols { grid-template-columns: 1fr 1fr; } .footer .cols > :first-child { grid-column: 1 / -1; } }

/* ---------- Utilidades ---------- */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }
.check { width: 18px; height: 18px; flex: none; color: var(--ok); }
.cta-band {
  position: relative; overflow: hidden; border-radius: 24px; padding: 56px 48px; color: #fff; text-align: center;
  background: radial-gradient(800px 300px at 15% 0%, rgba(255, 255, 255, .18), transparent 60%), var(--grad);
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 12px; }
.cta-band p { opacity: .9; font-size: 17px; margin: 0 auto 28px; max-width: 620px; }
.cta-band .btn { --b-bg: #fff; --b-fg: #2a1f8f; --b-bd: #fff; }
.cta-band .btn.btn-outline { --b-bg: transparent; --b-fg: #fff; --b-bd: rgba(255, 255, 255, .55); }
@media (max-width: 640px) { .cta-band { padding: 40px 20px; border-radius: 18px; } }