/* ============ Reset & base ============ */
:root{
  --blue-900:#0a2540;
  --blue-800:#0f3057;
  --blue-700:#144d81;
  --teal-500:#0fb9b1;
  --teal-400:#2dd4bf;
  --coral-500:#ff6b6b;
  --sand-100:#fdf6ec;
  --ink-900:#0b1220;
  --ink-600:#4b5563;
  --ink-400:#8a94a6;
  --white:#ffffff;
  --radius-lg:20px;
  --radius-md:14px;
  --shadow-md:0 10px 30px rgba(10,37,64,.12);
  --shadow-lg:0 20px 50px rgba(10,37,64,.18);
  --font-head:'Poppins',sans-serif;
  --font-body:'Inter',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink-900);
  background:var(--white);
  line-height:1.6;
}
h1,h2,h3,h4{font-family:var(--font-head); margin:0 0 .5em; color:var(--blue-900);}
p{margin:0 0 1em;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
ul{margin:0; padding:0; list-style:none;}

.container{
  width:100%;
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:14px 28px;
  border-radius:999px;
  font-weight:600;
  font-size:.95rem;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--teal-500),var(--teal-400));
  color:var(--white);
  box-shadow:var(--shadow-md);
}
.btn-primary:hover{transform:translateY(-2px); box-shadow:var(--shadow-lg);}
.btn-ghost{
  background:transparent;
  color:var(--white);
  border-color:rgba(255,255,255,.6);
}
.btn-ghost:hover{background:rgba(255,255,255,.12); transform:translateY(-2px);}

/* ============ Header ============ */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  background:rgba(10,37,64,0);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(10,37,64,.92);
  backdrop-filter:blur(8px);
  box-shadow:0 4px 20px rgba(0,0,0,.15);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-head);
  font-weight:600;
  color:var(--white);
  font-size:1.1rem;
}
.brand-icon{font-size:1.4rem;}
.nav{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav a{
  color:var(--white);
  font-weight:500;
  font-size:.95rem;
  opacity:.9;
  transition:opacity .2s ease;
}
.nav a:hover{opacity:1;}
.nav-cta{
  background:var(--teal-500);
  padding:10px 20px;
  border-radius:999px;
  opacity:1 !important;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:8px;
}
.nav-toggle span{
  width:24px; height:2px; background:var(--white); border-radius:2px;
}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  color:var(--white);
  padding-top:90px;
}
.hero-bg{
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 15% 20%, rgba(15,185,177,.35), transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(255,107,107,.25), transparent 50%),
    linear-gradient(135deg,var(--blue-900) 0%, var(--blue-800) 55%, var(--blue-700) 100%);
  z-index:-1;
}
.hero-bg::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:40px 40px;
}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:.8rem;
  font-weight:600;
  color:var(--teal-400);
  margin-bottom:14px;
}
.hero h1{
  color:var(--white);
  font-size:clamp(2.2rem,5vw,3.6rem);
  line-height:1.12;
  font-weight:700;
  max-width:820px;
}
.highlight{color:var(--teal-400);}
.hero-sub{
  max-width:600px;
  font-size:1.1rem;
  color:rgba(255,255,255,.85);
  margin-top:16px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  margin:32px 0;
}
.fact{
  display:flex;
  align-items:center;
  gap:14px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.15);
  padding:14px 20px;
  border-radius:var(--radius-md);
  backdrop-filter:blur(6px);
}
.fact-icon{font-size:1.6rem;}
.fact div{display:flex; flex-direction:column; font-size:.9rem;}
.fact strong{font-size:1rem; color:var(--white);}
.fact span{color:rgba(255,255,255,.7);}
.hero-cta{display:flex; gap:16px; flex-wrap:wrap;}

/* ============ Sections generic ============ */
.section{padding:100px 0;}
.section-alt{background:var(--sand-100);}
.section-tag{
  display:inline-block;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:.78rem;
  font-weight:700;
  color:var(--teal-500);
  background:rgba(15,185,177,.1);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-lead{
  max-width:680px;
  color:var(--ink-600);
  font-size:1.05rem;
}
.mt{margin-top:56px;}

/* ============ Cards ============ */
.cards-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:24px;
  margin-top:40px;
}
.card{
  background:var(--white);
  border:1px solid #eef1f5;
  border-radius:var(--radius-lg);
  padding:32px 26px;
  box-shadow:var(--shadow-md);
  transition:transform .25s ease, box-shadow .25s ease;
}
.card:hover{transform:translateY(-6px); box-shadow:var(--shadow-lg);}
.card-icon{
  font-size:1.8rem;
  width:56px; height:56px;
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,var(--teal-500),var(--teal-400));
  border-radius:16px;
  margin-bottom:18px;
}
.card h3{font-size:1.15rem;}
.card p{color:var(--ink-600); font-size:.95rem; margin:0;}

/* ============ Timeline ============ */
.timeline{
  margin-top:48px;
  border-left:3px solid rgba(15,185,177,.3);
  padding-left:28px;
  display:flex;
  flex-direction:column;
  gap:32px;
}
.timeline-item{
  position:relative;
}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-35px; top:4px;
  width:14px; height:14px;
  background:var(--teal-500);
  border:3px solid var(--white);
  box-shadow:0 0 0 2px var(--teal-500);
  border-radius:50%;
}
.time{
  display:inline-block;
  font-weight:700;
  color:var(--teal-500);
  font-family:var(--font-head);
  margin-bottom:4px;
}
.timeline-content h4{margin-bottom:4px; font-size:1.05rem;}
.timeline-content p{color:var(--ink-600); margin:0; font-size:.95rem;}
.note{margin-top:24px; font-size:.85rem; color:var(--ink-400); font-style:italic;}

/* ============ History gallery ============ */
.history-gallery{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:16px;
  margin-top:40px;
}
.history-photo{
  padding:0;
  border:none;
  background:none;
  cursor:zoom-in;
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  aspect-ratio:4/3;
  transition:transform .25s ease, box-shadow .25s ease;
}
.history-photo:hover{transform:translateY(-4px) scale(1.02); box-shadow:var(--shadow-lg);}
.history-photo img{
  width:100%; height:100%;
  object-fit:cover;
  display:block;
}

.lightbox{
  position:fixed;
  inset:0;
  z-index:1000;
  display:none;
  align-items:center;
  justify-content:center;
  background:rgba(10,20,35,.92);
  padding:40px;
}
.lightbox.open{display:flex;}
.lightbox img{
  max-width:min(90vw,1100px);
  max-height:85vh;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-lg);
}
.lightbox-close{
  position:absolute;
  top:24px; right:32px;
  background:none;
  border:none;
  color:var(--white);
  font-size:2.4rem;
  line-height:1;
  cursor:pointer;
}

/* ============ Two-col / ubicacion ============ */
.two-col{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.info-list{margin:24px 0; display:flex; flex-direction:column; gap:10px;}
.info-list li{
  padding:12px 16px;
  background:var(--sand-100);
  border-radius:var(--radius-md);
  font-size:.95rem;
  color:var(--ink-600);
}
.info-list strong{color:var(--blue-900);}
.map-embed{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  aspect-ratio:4/3;
}
.map-embed iframe{width:100%; height:100%; border:0;}

/* ============ Tourism ============ */
.tourism-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:24px;
  margin-top:40px;
}
.tourism-card{
  background:var(--white);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  transition:transform .25s ease;
}
.tourism-card:hover{transform:translateY(-6px);}
.tourism-img{
  height:170px;
  position:relative;
  overflow:hidden;
}
.tourism-img::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:14px 14px;
}
.tourism-img--cerros{background:linear-gradient(135deg,#ff9f68,#ff6b6b 45%,#c94277 100%);}
.tourism-img--ascensor{background:linear-gradient(135deg,#0fb9b1,#144d81 100%);}
.tourism-img--muelle{background:linear-gradient(135deg,#2dd4bf,#0a2540 100%);}
.tourism-img--arte{background:linear-gradient(135deg,#ffd93d,#ff6b6b 50%,#845ec2 100%);}
.tourism-card h3{font-size:1.05rem; padding:20px 20px 0;}
.tourism-card p{padding:8px 20px 22px; color:var(--ink-600); font-size:.9rem; margin:0;}

.tip-box{
  margin-top:40px;
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:linear-gradient(135deg,rgba(15,185,177,.1),rgba(20,77,129,.08));
  border:1px solid rgba(15,185,177,.25);
  padding:22px 24px;
  border-radius:var(--radius-md);
}
.tip-icon{font-size:1.4rem;}
.tip-box p{margin:0; color:var(--ink-600); font-size:.95rem;}

/* ============ Sponsors ============ */
.logos-grid{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-top:28px;
}
.logo-chip{
  background:var(--blue-900);
  color:var(--white);
  font-weight:600;
  font-family:var(--font-head);
  padding:18px 28px;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-md);
}
.logo-chip--alt{
  background:var(--white);
  color:var(--blue-900);
  border:2px solid var(--teal-500);
}

/* ============ Form ============ */
.section-form{background:linear-gradient(160deg,var(--blue-900),var(--blue-700));}
.section-form .section-tag{background:rgba(45,212,191,.15); color:var(--teal-400);}
.section-form h2, .section-form .section-lead{color:var(--white);}
.section-form .section-lead{color:rgba(255,255,255,.75);}

.registration-form{
  margin-top:40px;
  background:var(--white);
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:var(--shadow-lg);
}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-bottom:20px;
}
.form-group{display:flex; flex-direction:column;}
.form-group label{
  font-weight:600;
  font-size:.9rem;
  margin-bottom:6px;
  color:var(--blue-900);
}
.form-group input,
.form-group select{
  padding:12px 14px;
  border:1.5px solid #dbe2ea;
  border-radius:10px;
  font-family:var(--font-body);
  font-size:.95rem;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.form-group input:focus,
.form-group select:focus{
  outline:none;
  border-color:var(--teal-500);
  box-shadow:0 0 0 3px rgba(15,185,177,.15);
}
.form-group.invalid input,
.form-group.invalid select{border-color:var(--coral-500);}
.error-msg{
  font-size:.8rem;
  color:var(--coral-500);
  min-height:1.1em;
  margin-top:4px;
}
.checkbox-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:.9rem;
  color:var(--ink-600);
  margin-bottom:24px;
}
.checkbox-row input{margin-top:3px;}
.btn-submit{width:100%; border:none;}
.form-success{
  margin-top:16px;
  text-align:center;
  font-weight:600;
  color:var(--teal-500);
  min-height:1.2em;
}

/* ============ Footer ============ */
.site-footer{background:var(--blue-900); color:rgba(255,255,255,.75); padding:50px 0;}
.footer-inner{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:32px;
}
.footer-inner strong{color:var(--white); margin-left:8px;}
.footer-inner p{font-size:.85rem; margin:8px 0 0;}

/* ============ Reveal animation ============ */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .6s ease, transform .6s ease;
}
.reveal.is-visible{opacity:1; transform:translateY(0);}

/* ============ Responsive ============ */
@media (max-width:900px){
  .two-col{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr; text-align:center;}
}
@media (max-width:760px){
  .nav{
    position:fixed;
    top:0; right:0;
    height:100vh;
    width:min(78vw,320px);
    background:var(--blue-900);
    flex-direction:column;
    align-items:flex-start;
    padding:100px 32px 32px;
    gap:24px;
    transform:translateX(100%);
    transition:transform .3s ease;
  }
  .nav.open{transform:translateX(0);}
  .nav-toggle{display:flex;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .section{padding:70px 0;}
  .hero{padding-top:110px;}
}