/* ==================================================================
   FoodTech Academy — estilos del sitio público
   Paleta:  teal #12b5b0 · azul #1479ff · navy #0b2853 · verde #27c07a
   Tipografía: Poppins
   ================================================================== */

:root{
  --teal:#12b5b0;
  --teal-d:#0e9a95;
  --azul:#1479ff;
  --azul-d:#0f62d6;
  --navy:#0b2853;
  --verde:#27c07a;
  --gris:#f4f6f8;
  --texto:#3a3f4a;
  --radio:16px;
  --sombra:0 18px 40px rgba(11,40,83,.12);
  --contenedor:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins',system-ui,Segoe UI,Roboto,sans-serif;
  color:var(--texto);
  line-height:1.6;
  background:#fff;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.contenedor{max-width:var(--contenedor);margin:0 auto;padding:0 20px;width:100%}

/* ---------- Botones ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;
  font-weight:600;font-size:.95rem;padding:12px 26px;border-radius:40px;transition:.25s;font-family:inherit}
.btn-azul{background:var(--azul);color:#fff}
.btn-azul:hover{background:var(--azul-d)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-d)}
.btn-verde{background:var(--verde);color:#fff}
.btn-verde:hover{filter:brightness(.94)}
.btn-outline{background:#fff;color:var(--azul);border:2px solid var(--azul)}
.btn-outline:hover{background:var(--azul);color:#fff}

/* ==================================================================
   TOP BAR
   ================================================================== */
.topbar{background:var(--gris);font-size:.85rem;color:var(--navy)}
.topbar .contenedor{display:flex;align-items:center;justify-content:space-between;
  min-height:44px;flex-wrap:wrap;gap:8px}
.topbar-left{display:flex;gap:26px;flex-wrap:wrap}
.topbar-left span{display:flex;align-items:center;gap:8px}
.topbar-left i{color:var(--navy)}
.topbar-social{display:flex;gap:16px;font-size:1.05rem;color:#9aa3ad}
.topbar-social a:hover{color:var(--teal)}

/* ==================================================================
   HEADER / NAVBAR
   ================================================================== */
.header{background:#fff;position:sticky;top:0;z-index:60;box-shadow:0 2px 14px rgba(0,0,0,.05)}
.header .contenedor{display:flex;align-items:center;justify-content:space-between;min-height:74px}
.logo{display:flex;align-items:center;gap:10px}
.logo .marca{font-weight:800;font-size:1.5rem;color:var(--navy);letter-spacing:.5px}
.logo .marca b{color:var(--teal)}
.logo-mark{width:40px;height:40px;border-radius:9px;
  background:conic-gradient(from 45deg,var(--azul),var(--teal),var(--verde),var(--azul));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;
  transform:rotate(45deg)}
.logo-mark i{transform:rotate(-45deg)}

.nav{display:flex;align-items:center;gap:30px}
.nav a{font-weight:600;color:var(--navy);font-size:.95rem;position:relative;padding:6px 0}
.nav a.activo,.nav a:hover{color:var(--teal)}
.nav a.activo::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--navy)}
.nav .dropdown{position:relative}
.nav .dropdown-menu{position:absolute;top:130%;left:0;background:#fff;min-width:230px;
  box-shadow:var(--sombra);border-radius:12px;padding:8px 0;opacity:0;visibility:hidden;
  transform:translateY(8px);transition:.22s;z-index:50}
.nav .dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav .dropdown-menu a{display:block;padding:10px 20px;font-weight:500}
.nav .dropdown-menu a:hover{background:var(--gris)}

.menu-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--navy);cursor:pointer}

/* ==================================================================
   HERO / CARRUSEL
   ================================================================== */
.hero{position:relative;overflow:hidden;background:var(--navy)}
.hero-slider{position:relative;height:clamp(360px,52vw,540px)}
.hero-slide{position:absolute;inset:0;display:grid;grid-template-columns:repeat(4,1fr);
  opacity:0;transition:opacity .7s ease;pointer-events:none}
.hero-slide.activo{opacity:1;pointer-events:auto}
.hero-slide .foto{background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:0 20px;background:linear-gradient(0deg,rgba(11,40,83,.45),rgba(11,40,83,.08))}
.hero-overlay h1{color:#fff;text-align:center;font-size:clamp(1.6rem,4vw,2.6rem);
  font-weight:800;max-width:900px;text-shadow:0 4px 18px rgba(0,0,0,.35);line-height:1.25}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:52px;height:52px;border-radius:50%;border:2px solid rgba(255,255,255,.85);
  background:rgba(255,255,255,.15);backdrop-filter:blur(4px);color:#fff;font-size:1.2rem;
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.hero-arrow:hover{background:var(--teal);border-color:var(--teal)}
.hero-arrow.prev{left:22px}
.hero-arrow.next{right:22px}
.hero-wave{position:absolute;bottom:-2px;left:0;width:100%;line-height:0}
.hero-wave svg{width:100%;height:70px}

/* ==================================================================
   SECCIÓN AVAL / RESPALDO
   ================================================================== */
.sec{padding:80px 0}
.aval .grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.aval h2{color:var(--teal);font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;margin-bottom:22px;line-height:1.2}
.aval p{max-width:520px}
.diamante{position:relative;aspect-ratio:1/1;max-width:440px;margin-left:auto;
  border-radius:26px;overflow:hidden;transform:rotate(45deg)}
.diamante img{transform:rotate(-45deg) scale(1.6);width:100%;height:100%;object-fit:cover}

/* ==================================================================
   SECCIÓN ESTUDIA CON NOSOTROS (gradiente)
   ================================================================== */
.estudia{background:linear-gradient(120deg,var(--azul),var(--teal));color:#fff}
.estudia .grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center}
.eyebrow{font-weight:700;font-size:.85rem;letter-spacing:1px;text-transform:uppercase;opacity:.9}
.estudia h2{font-size:clamp(2rem,4vw,3rem);font-weight:800;margin:6px 0 30px;line-height:1.1}
.feature{display:flex;gap:18px;margin-bottom:26px}
.feature-ico{flex:none;width:54px;height:54px;border-radius:14px;background:#fbe7c6;color:#c47b1e;
  display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.feature h4{font-size:1.05rem;margin-bottom:4px}
.feature p{font-size:.92rem;opacity:.95}

/* tarjeta de curso demo */
.card-demo{background:#fff;border-radius:22px;box-shadow:var(--sombra);padding:16px;color:var(--texto);max-width:430px;margin-inline:auto}
.card-demo .portada{border-radius:14px;overflow:hidden;height:180px}
.card-demo .portada img{width:100%;height:100%;object-fit:cover}
.card-demo h3{color:var(--navy);margin:16px 4px 8px}
.card-demo .meta{display:flex;gap:18px;font-size:.85rem;padding:0 4px 12px;border-bottom:1px solid #eee}
.card-demo .alumno{display:flex;align-items:center;gap:12px;padding:14px 4px 4px}
.card-demo .alumno img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.progreso{height:6px;background:#e8edf3;border-radius:6px;margin-top:6px;overflow:hidden}
.progreso i{display:block;height:100%;width:100%;background:var(--azul)}

/* ==================================================================
   MEJORES PROGRAMAS (cards)
   ================================================================== */
.programas h2{color:var(--navy);font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;margin-bottom:44px;line-height:1.15}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card-curso{position:relative;border-radius:16px;overflow:hidden;height:290px;box-shadow:var(--sombra)}
.card-curso img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card-curso:hover img{transform:scale(1.06)}
.card-curso .info{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;
  padding:22px;color:#fff;background:linear-gradient(0deg,rgba(0,0,0,.72),rgba(0,0,0,.05) 60%)}
.card-curso .info h3{font-size:1.05rem;line-height:1.25}
.card-curso .info span{font-size:.85rem;opacity:.9;margin-top:6px}
.centro{text-align:center;margin-top:40px}

/* ==================================================================
   DESCUBRE (gradiente + imágenes)
   ================================================================== */
.descubre{background:linear-gradient(120deg,var(--azul),var(--teal));color:#fff}
.descubre .grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.descubre h2{font-size:clamp(1.9rem,4vw,3rem);font-weight:800;line-height:1.1;margin-bottom:24px}
.descubre p{margin-bottom:18px;max-width:520px}
.descubre .imgs{display:grid;gap:24px}
.descubre .imgs img{border-radius:18px;box-shadow:var(--sombra)}
.descubre .imgs img:last-child{margin-left:auto;max-width:80%}

/* ==================================================================
   ONLINE / ESTADÍSTICAS
   ================================================================== */
.online .grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.online .diamante{max-width:420px;margin:0}
.online h2{color:var(--teal);font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;line-height:1.15}
.online .sub{color:var(--navy);font-size:1.1rem;margin-bottom:34px}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:34px 40px}
.stat .num{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:var(--navy)}
.stat .lbl{color:var(--texto);font-size:.95rem}
.cta-card{background:#fff;box-shadow:var(--sombra);border-radius:60px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 36px;margin-top:50px;flex-wrap:wrap}
.cta-card span{font-size:1.4rem;color:var(--navy);font-weight:500}

/* ==================================================================
   CONTACTO
   ================================================================== */
.contacto{position:relative;color:#fff;
  background:linear-gradient(120deg,rgba(18,181,176,.92),rgba(39,192,122,.92)),
             url('../img/contacto-bg.svg') center/cover no-repeat}
.contacto .grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.contacto h2{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.05}
.contacto .lead{font-size:1.15rem;margin-top:12px}
.form-campo{margin-bottom:20px}
.form-campo label{display:block;margin-bottom:8px;font-weight:500}
.form-campo input,.form-campo textarea{width:100%;border:none;border-radius:30px;padding:14px 20px;
  font-family:inherit;font-size:.95rem;background:rgba(255,255,255,.12);color:#fff;
  border:1.5px solid rgba(255,255,255,.7)}
.form-campo textarea{border-radius:20px;resize:vertical;min-height:130px}
.form-campo input::placeholder,.form-campo textarea::placeholder{color:rgba(255,255,255,.7)}
.form-campo input:focus,.form-campo textarea:focus{outline:none;background:rgba(255,255,255,.2)}
.form-actions{text-align:right}
.alerta{padding:12px 18px;border-radius:12px;background:rgba(255,255,255,.9);color:var(--navy);margin-bottom:18px;font-weight:500}

/* ==================================================================
   FOOTER
   ================================================================== */
.footer{background:#f6f7f9;color:var(--texto);padding:70px 0 30px}
.footer .grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer .marca-desc p{margin:18px 0;max-width:360px;font-size:.95rem}
.footer .dato{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:.92rem}
.footer h4{color:var(--navy);margin-bottom:18px;font-size:1.05rem}
.footer ul{list-style:none}
.footer ul li{margin-bottom:10px}
.footer ul a{color:#8a929c}
.footer ul a:hover{color:var(--teal)}
.footer .copy{border-top:1px solid #e6e9ec;margin-top:40px;padding-top:22px;font-size:.85rem;color:#9aa3ad}

/* ==================================================================
   RESPONSIVE
   ================================================================== */
@media(max-width:992px){
  .aval .grid,.estudia .grid,.descubre .grid,.online .grid,.contacto .grid,.footer .grid{
    grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .footer .grid{grid-template-columns:1fr 1fr}
  .diamante,.online .diamante{margin:0 auto}
  .descubre .imgs img:last-child{margin:0 auto}
}
@media(max-width:768px){
  .sec{padding:56px 0}
  .menu-toggle{display:block}
  .nav{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 20px 24px;box-shadow:var(--sombra);
    transform:translateY(-140%);transition:.3s;max-height:calc(100vh - 74px);overflow-y:auto}
  .nav.abierto{transform:translateY(0)}
  .nav a{width:100%;padding:12px 0;border-bottom:1px solid #f0f0f0}
  .nav .dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;padding-left:14px;display:none}
  .nav .dropdown.open .dropdown-menu{display:block}
  .hero-slide{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .cards{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .footer .grid{grid-template-columns:1fr}
  .hero-slide{grid-template-columns:1fr}
  .topbar-left{gap:14px;font-size:.78rem}
  .cta-card{border-radius:26px;flex-direction:column;text-align:center}
}

/* ==================================================================
   VERIFICACIÓN DE CERTIFICADOS (página pública certificados.php)
   ================================================================== */
.cert-seccion{padding:70px 0;background:linear-gradient(180deg,#f4f8fc 0%,#fff 100%);min-height:60vh}
.cert-card{max-width:920px;margin:0 auto;background:#fff;border:1px solid #e7edf4;
  border-radius:20px;box-shadow:var(--sombra);padding:44px 46px}
.cert-card h1{color:var(--navy);font-size:1.9rem;margin-bottom:12px}
.cert-card .intro{color:#6b7683;margin-bottom:26px;max-width:620px}
.cert-form{display:flex;gap:14px;flex-wrap:wrap}
.cert-form input[type=text]{flex:1;min-width:240px;padding:15px 18px;border:1.6px solid #d8e0ea;
  border-radius:12px;font-family:inherit;font-size:1rem;color:var(--navy)}
.cert-form input[type=text]:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(18,181,176,.12)}
.cert-form .btn{border:1.6px solid var(--azul);background:#fff;color:var(--azul);white-space:nowrap}
.cert-form .btn:hover{background:var(--azul);color:#fff}

/* Resultado */
.cert-res{margin-top:30px;border-radius:16px;padding:28px 30px;animation:fadeUp .4s ease}
.cert-res.ok{background:#effaf6;border:1px solid #bfe9d8}
.cert-res.rev{background:#fff5e9;border:1px solid #f3d9b4}
.cert-res.no{background:#fdecec;border:1px solid #f3c4c4}
.cert-res .estado{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:1.05rem;margin-bottom:14px}
.cert-res.ok .estado{color:#0e8f66}
.cert-res.rev .estado{color:#b7791f}
.cert-res.no .estado{color:#c0392b}
.cert-datos{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-bottom:20px}
.cert-datos .d{background:#fff;border:1px solid #e7edf4;border-radius:12px;padding:14px 16px}
.cert-datos .d span{display:block;font-size:.76rem;color:#8a929c;text-transform:uppercase;letter-spacing:.4px}
.cert-datos .d b{color:var(--navy);font-size:1.02rem}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

@media(max-width:560px){
  .cert-card{padding:30px 22px}
  .cert-card h1{font-size:1.5rem}
}