/* ===== Paleta inspirada en Power BI ===== */
:root {
  --bg: #F7F8FA;
  --surface: #ffffff;
  --surface-alt: #F8FAFF;
  --ink: #0B1220;
  --muted: #667085;
  --brand: #111827;
  --accent: #F2C811;      /* Power BI Yellow */
  --accent-600: #D4AC0D;
  --accent-700: #B08F0C;
  --radius: 18px;
}
:root[data-theme="dark"]{
  --bg: #0b111b;
  --surface: #0f1624;
  --surface-alt: #0c1422;
  --ink: #E6EAF2;
  --muted: #9AA4B2;
  --brand: #F2F4F8;
  --accent: #F2C811;
  --accent-600: #d1aa0f;
  --accent-700: #b8910f;
}

/* Reset básico */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

/* Contenedor */
.container { max-width: 1120px; margin: 0 auto; padding: 0 5vw; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 30;
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  backdrop-filter: saturate(120%) blur(14px);
  border-bottom: 1px solid color-mix(in oklab, var(--ink) 12%, transparent);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.logo { text-decoration: none; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; font-size: .95rem; color: var(--brand); }
.logo span { color: var(--accent); }

.nav { display: flex; align-items: center; gap: 20px; }
.nav a { text-decoration: none; color: var(--muted); font-size: .95rem; transition: color .2s; }
.nav a:hover, .nav a.active { color: var(--brand); }
.btn-small { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--accent); color: var(--accent)!important; font-weight: 600; }

.theme-toggle { border: 1px solid color-mix(in oklab, var(--ink) 20%, transparent); background: transparent; border-radius: 999px; padding: 6px 10px; cursor: pointer; font-size: 16px; display: inline-flex; gap: 6px; }
.theme-toggle .sun { display: var(--show-sun, inline); }
.theme-toggle .moon { display: var(--show-moon, none); }
:root[data-theme="dark"] .theme-toggle { --show-sun:none; --show-moon:inline; }

/* Hamburguesa */
.menu-toggle { display: none; background: transparent; border: 1px solid color-mix(in oklab, var(--ink) 20%, transparent); border-radius: 12px; padding: 6px 10px; color: var(--brand); cursor: pointer; font-size: 0; }
.menu-toggle svg { font-size: 16px; }
.menu-toggle[aria-expanded="true"] { background: color-mix(in oklab, var(--accent) 14%, transparent); }

/* Hero */
.hero { position: relative; padding: 96px 0 80px; }
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(1200px 500px at 20% 0%, color-mix(in oklab, var(--accent) 24%, transparent), transparent 60%),
    radial-gradient(900px 400px at 80% 20%, color-mix(in oklab, var(--ink) 12%, transparent), transparent 60%),
    linear-gradient(180deg, color-mix(in oklab, #EEF2FF 70%, var(--bg) 30%) 0%, var(--bg) 70%);
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:-1;
  background-image:
    linear-gradient(0deg, color-mix(in oklab, var(--ink) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--ink) 4%, transparent) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(120% 100% at 50% -10%, black, transparent 70%);
  pointer-events:none;
}
.hero-inner { display: flex; justify-content: center; }
.hero-text { max-width: 760px; text-align: left; }
.badge { display: inline-block; font-size: .8rem; padding: 6px 10px; border-radius: 999px; background: color-mix(in oklab, var(--accent) 22%, transparent); color: #1f2937; font-weight: 700; }
.hero h1 { margin: 12px 0 14px; font-size: clamp(2.4rem, 4vw + 1rem, 3.6rem); letter-spacing: -.03em; color: var(--brand); }
.highlight { box-shadow: inset 0 -0.35em 0 color-mix(in oklab, var(--accent) 35%, transparent); }
.hero-lead { margin: 0 0 22px; color: var(--muted); font-size: 1.06rem; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-bottom: 12px; }
.hero-note { color: var(--muted); font-size: .95rem; }

/* Botones */
.btn-primary, .btn-secondary {
  display:inline-block; padding:13px 22px; border-radius: 999px;
  text-decoration:none; font-size:.97rem; border:1px solid transparent; transition: all .18s ease-out;
}
.btn-primary { background: var(--accent); color: #111827; font-weight: 800; box-shadow: 0 8px 24px color-mix(in oklab, var(--accent) 25%, transparent); }
.btn-primary:hover { background: var(--accent-600); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--ink); border-color: color-mix(in oklab, var(--ink) 22%, transparent); }
.btn-secondary:hover { border-color: var(--brand); }
.btn-block { display:block; text-align:center; }

/* Secciones */
.section { padding: 64px 0; background: var(--surface); }
.section.alt { background: var(--surface-alt); }
.section h2 { margin: 0 0 14px; font-size: 1.95rem; color: var(--brand); letter-spacing: -.02em; }
.section-subtitle { margin: 0 0 24px; color: var(--muted); max-width: 620px; }

/* Value grid (Nosotros - ahora sin cuadros, pero por si los vuelves a usar) */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 18px; }
.value { background: var(--surface); border: 1px solid color-mix(in oklab, var(--ink) 12%, transparent); border-radius: 16px; padding: 18px; }
.value-icon { font-size: 22px; margin-bottom: 6px; }

/* Cards genéricas */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.card { background: var(--surface); border-radius: var(--radius); padding: 22px 20px; border: 1px solid color-mix(in oklab, var(--ink) 18%, transparent); transition: transform .18s, box-shadow .18s, border-color .18s; position: relative; }
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(15,23,42,.08); border-color: color-mix(in oklab, var(--accent) 45%, transparent); }
.card h3 { margin: 0 0 10px; color: var(--brand); }
.list { margin: 0 0 16px 0; padding: 0 0 0 18px; color: var(--muted); }
.card-cta { text-decoration: none; font-weight: 700; color: var(--ink); border-bottom: 2px solid var(--accent); }

/* Proyectos */
.projects { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.project { background: var(--surface); border: 1px solid color-mix(in oklab, var(--ink) 16%, transparent); border-radius: 16px; padding: 18px; position: relative; }
.project-tag { position: absolute; top: -10px; left: 12px; background: var(--accent); color: #111827; font-weight: 800; font-size: .8rem; padding: 4px 8px; border-radius: 999px; }

/* Pricing cursos (tarjetas) */
.pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; align-items: stretch; }
.price { background: var(--surface); border: 1px solid color-mix(in oklab, var(--ink) 16%, transparent); border-radius: 20px; padding: 22px; display: flex; flex-direction: column; }
.price .price-note { color: var(--muted); margin-top: -4px; }
.price .list { flex: 1; }
.price.featured { outline: 2px solid var(--accent); box-shadow: 0 14px 40px color-mix(in oklab, var(--accent) 30%, transparent); position: relative; }
.price .label { position: absolute; top: -10px; right: 12px; background: #111827; color: #fff; font-size: .75rem; padding: 4px 8px; border-radius: 999px; }

/* Carrusel de cursos responsive */
.courses-carousel {
  position: relative;
  margin-top: 26px;
}
.courses-window {
  overflow: hidden;
}
.courses-track {
  display: flex;
  transition: transform .4s ease;
}
.courses-track .price {
  flex: 0 0 100%;        /* móvil: 1 por vista */
}

/* Tablet: 2 cursos visibles */
@media (min-width: 720px) {
  .courses-track .price {
    flex: 0 0 50%;
  }
}

/* Desktop: 3 cursos visibles */
@media (min-width: 1024px) {
  .courses-track .price {
    flex: 0 0 33.3333%;
  }
}

.courses-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: color-mix(in oklab, var(--surface) 86%, transparent);
  border: 1px solid color-mix(in oklab, var(--ink) 16%, transparent);
  width: 36px;
  height: 36px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.courses-prev { left: -10px; }
.courses-next { right: -10px; }

/* Carrusel testimonios (por si luego lo usas) */
.carousel { position: relative; overflow: hidden; border-radius: 16px; border: 1px solid color-mix(in oklab, var(--ink) 14%, transparent); background: var(--surface); }
.carousel-track { display: grid; grid-auto-flow: column; grid-auto-columns: 100%; transition: transform .4s ease; }
.carousel-prev, .carousel-next { position: absolute; top: 50%; transform: translateY(-50%); border: none; background: color-mix(in oklab, var(--surface) 86%, transparent); border: 1px solid color-mix(in oklab, var(--ink) 16%, transparent); width: 36px; height: 36px; border-radius: 999px; cursor: pointer; }
.carousel-prev { left: 10px; } .carousel-next { right: 10px; }
.quote { padding: 24px; }
.quote blockquote { margin: 0 0 8px; font-size: 1.1rem; }
.quote figcaption { color: var(--muted); }

/* FAQ acordeón (por si a futuro vuelves a activarlo) */
.accordion { max-width: 820px; margin: 0 auto; }
.acc-btn { width: 100%; text-align: left; padding: 14px 16px; border-radius: 12px; background: var(--surface); border: 1px solid color-mix(in oklab, var(--ink) 16%, transparent); margin-bottom: 8px; cursor: pointer; font-weight: 700; }
.acc-panel { overflow: hidden; max-height: 0; transition: max-height .25s ease; border-left: 3px solid var(--accent); margin: 0 0 12px 0; padding: 0 12px; color: var(--muted); background: color-mix(in oklab, var(--surface) 90%, transparent); border-radius: 0 12px 12px 12px; }

/* Contacto */
.contact { text-align: center; }
.contact-form { max-width: 760px; margin: 16px auto 0; text-align: left; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
input, textarea { width: 100%; border: 1px solid color-mix(in oklab, var(--ink) 18%, transparent); border-radius: 12px; padding: 12px 14px; color: var(--ink); background: var(--surface); }
textarea { resize: vertical; }
.contact-form button { margin-top: 10px; }
.contact-alt { color: var(--muted); margin-top: 10px; }

/* Footer */
.footer { background: color-mix(in oklab, var(--ink) 6%, var(--surface)); border-top: 1px solid color-mix(in oklab, var(--ink) 16%, transparent); padding: 18px 0; font-size: .9rem; color: var(--muted); text-align: center; }

/* WhatsApp flotante */
.whatsapp-float { position: fixed; right: 18px; bottom: calc(18px + env(safe-area-inset-bottom,0)); width: 56px; height: 56px; border-radius: 999px; background: #25D366; color: #fff; display: inline-flex; align-items: center; justify-content: center; box-shadow: 0 10px 30px rgba(37,211,102,.5); z-index: 60; text-decoration: none; transition: transform .15s, box-shadow .15s; }
.whatsapp-float:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(37,211,102,.6); }

/* Responsive */
@media (max-width: 920px){
  .nav { gap: 16px; }
}
@media (max-width: 720px){
  .topbar-inner { justify-content: space-between; }
  .menu-toggle { display: inline-flex; align-items: center; gap: 8px; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: color-mix(in oklab, var(--surface) 98%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid color-mix(in oklab, var(--ink) 14%, transparent);
    display: grid; gap: 6px; padding: 12px 5vw 16px;
    transform-origin: top; transform: scaleY(0); opacity: 0; pointer-events: none; transition: transform 160ms ease, opacity 160ms ease; z-index: 25;
  }
  .nav a, .theme-toggle { margin: 0; padding: 10px 12px; border-radius: 10px; font-size: 1rem; }
  .nav a:hover { background: color-mix(in oklab, var(--ink) 6%, transparent); }
  .nav.is-open { transform: scaleY(1); opacity: 1; pointer-events: auto; }

  .hero { padding: 72px 0 56px; }
  .hero-text { text-align: center; }
  .hero-actions { justify-content: center; }

  .grid-2 { grid-template-columns: 1fr; }

  .courses-prev { left: 4px; }
  .courses-next { right: 4px; }

  .whatsapp-float { width: 64px; height: 64px; right: 16px; }
}