/* =========================================================
   ECORED — hoja de estilos compartida
   Tema: panel nocturno tipo diagrama de flujo (cian / verde)
   ========================================================= */

:root{
  --bg-0:#03060c;
  --bg-1:#060c16;
  --cyan:#4dd9ec;
  --cyan-soft:#a6f1ff;
  --green:#46e08a;
  --green-soft:#bdffd9;
  --warn:#ffb454;
  --text:#eaf4f8;
  --text-dim:#7fa0b3;
  --text-faint:#43586a;
  --mono:'SF Mono','Consolas','Courier New',monospace;
  --sans:'Segoe UI','Helvetica Neue',Arial,sans-serif;
  --radius:14px;
  --glow-cyan:0 0 12px rgba(77,217,236,.45),0 0 30px rgba(77,217,236,.16);
  --glow-green:0 0 12px rgba(70,224,138,.45),0 0 30px rgba(70,224,138,.16);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}

body{
  background:
    radial-gradient(ellipse 1100px 700px at 14% -8%, #0d2535 0%, transparent 58%),
    radial-gradient(ellipse 900px 650px at 102% 8%, #0a2a1f 0%, transparent 55%),
    var(--bg-0);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.65;
  min-height:100vh;
}

a{color:inherit;}
img,svg{display:block;max-width:100%;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(4,8,14,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(77,217,236,.16);
}
.nav-wrap{
  max-width:1120px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;gap:18px;flex-wrap:wrap;
}
.logo{
  font-family:var(--mono);font-weight:700;letter-spacing:.5px;
  text-decoration:none;display:flex;align-items:center;gap:9px;font-size:14.5px;
}
.logo .dot{
  width:8px;height:8px;border-radius:50%;background:var(--cyan);
  box-shadow:var(--glow-cyan);
  animation:pulseDot 2.6s ease-in-out infinite;
}
.logo .suffix{color:var(--text-faint);}
.nav-links{display:flex;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;}
.nav-links a{
  color:var(--text-dim);text-decoration:none;padding:6px 1px;
  border-bottom:2px solid transparent;transition:color .2s,border-color .2s;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--cyan-soft);border-color:rgba(77,217,236,.5);}
.nav-links a.active{color:var(--cyan-soft);border-color:var(--cyan);}

/* ---------- hero ---------- */
.hero{max-width:880px;margin:54px auto 10px;padding:0 24px;text-align:center;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.5px;
  color:var(--green-soft);border:1px solid var(--green);
  background:rgba(70,224,138,.08);border-radius:30px;padding:5px 14px;
  box-shadow:var(--glow-green);margin-bottom:22px;
}
.page-title{
  font-size:clamp(28px,5.2vw,46px);font-weight:800;letter-spacing:.5px;
  text-transform:uppercase;margin-bottom:16px;
  text-shadow:0 0 22px rgba(77,217,236,.35);
}
.hero p, .lede{color:var(--text-dim);font-size:15.5px;max-width:620px;margin:0 auto;}

/* ---------- hub graphic (home) ---------- */
.hub-wrap{display:flex;justify-content:center;margin-bottom:18px;}
@keyframes pulseDot{0%,100%{opacity:1;}50%{opacity:.45;}}
@keyframes pulseGlowCyan{
  0%,100%{box-shadow:var(--glow-cyan);}
  50%{box-shadow:0 0 22px rgba(77,217,236,.7),0 0 46px rgba(77,217,236,.28);}
}
@keyframes spinSlow{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}

/* ---------- section layout ---------- */
.section{max-width:1020px;margin:0 auto;padding:46px 24px;}
.section-title{font-size:25px;font-weight:800;margin-bottom:8px;letter-spacing:.2px;}
.section-sub{color:var(--text-dim);margin-bottom:30px;font-size:14.5px;max-width:680px;}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(77,217,236,.35),transparent);margin:42px 0;}

/* ---------- card grid (home nav) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:8px;}
.node-card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  background:rgba(255,255,255,.025);border:1.5px solid var(--cyan);
  border-radius:var(--radius);padding:20px 22px;text-decoration:none;color:var(--text);
  box-shadow:var(--glow-cyan);transition:transform .25s,box-shadow .25s;overflow:hidden;
}
.node-card.green{border-color:var(--green);box-shadow:var(--glow-green);}
.node-card:hover{transform:translateY(-4px);}
.node-card:hover{animation:pulseGlowCyan 1.4s ease-in-out infinite;}
.node-card .file{font-family:var(--mono);font-size:11.5px;color:var(--text-dim);}
.node-card h3{font-size:17.5px;font-weight:700;}
.node-card p{font-size:13.3px;color:var(--text-dim);}
.node-card .badge-js{
  position:absolute;top:14px;right:14px;font-family:var(--mono);font-size:9.5px;
  background:rgba(70,224,138,.15);color:var(--green-soft);border:1px solid var(--green);
  padding:2px 6px;border-radius:6px;letter-spacing:.5px;
}
.node-card .icon{font-size:22px;line-height:1;}

/* ---------- info / content cards ---------- */
.info-card{
  background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.08);
  border-left:3px solid var(--cyan);border-radius:10px;padding:18px 20px;
}
.info-card.green{border-left-color:var(--green);}
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;}
.info-card h4{font-size:15.5px;margin-bottom:6px;}
.info-card p{font-size:13.6px;color:var(--text-dim);}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:1px;color:var(--text-faint);text-transform:uppercase;margin-bottom:4px;display:block;}

/* color-coded bin chips for reciclaje page */
.bin-row{display:flex;align-items:flex-start;gap:14px;}
.bin-chip{
  flex:0 0 auto;width:46px;height:46px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-size:20px;
  box-shadow:0 0 0 1px rgba(255,255,255,.08);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:13px;
  padding:11px 22px;border-radius:30px;border:1.5px solid var(--cyan);color:var(--cyan-soft);
  text-decoration:none;background:rgba(77,217,236,.07);box-shadow:var(--glow-cyan);
  cursor:pointer;transition:.2s;
}
.btn:hover{background:rgba(77,217,236,.18);}
.btn.green{border-color:var(--green);color:var(--green-soft);background:rgba(70,224,138,.07);box-shadow:var(--glow-green);}
.btn.green:hover{background:rgba(70,224,138,.18);}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px;}

/* ---------- forms ---------- */
.form-field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;}
label{font-size:12.5px;color:var(--text-dim);font-family:var(--mono);letter-spacing:.3px;}
input,select,textarea{
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.14);border-radius:8px;
  padding:11px 13px;color:var(--text);font-family:var(--sans);font-size:14px;
}
textarea{resize:vertical;min-height:110px;}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(77,217,236,.16);
}
input.invalid,textarea.invalid,select.invalid{border-color:#ff6b6b;}
.field-error{color:#ff8a8a;font-size:12px;display:none;}
.field-error.show{display:block;}

/* ---------- gallery ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;}
.gallery-card{
  border:1.5px solid var(--cyan);border-radius:var(--radius);overflow:hidden;
  background:rgba(255,255,255,.02);cursor:pointer;box-shadow:var(--glow-cyan);
  transition:transform .25s;
}
.gallery-card.green{border-color:var(--green);box-shadow:var(--glow-green);}
.gallery-card:hover{transform:translateY(-4px) scale(1.01);}
.gallery-card .art{padding:22px;display:flex;align-items:center;justify-content:center;height:140px;}
.gallery-card .cap{padding:12px 16px 16px;font-size:13.5px;color:var(--text-dim);border-top:1px solid rgba(255,255,255,.06);}
.gallery-card .cap b{color:var(--text);}

.lightbox{
  position:fixed;inset:0;background:rgba(2,5,9,.86);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;z-index:100;padding:24px;
}
.lightbox.open{display:flex;}
.lightbox-inner{
  max-width:420px;width:100%;background:var(--bg-1);border:1.5px solid var(--cyan);
  border-radius:16px;padding:28px;box-shadow:var(--glow-cyan);text-align:center;position:relative;
}
.lightbox-inner .art{height:160px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;}
.lightbox-close{
  position:absolute;top:12px;right:14px;background:none;border:none;color:var(--text-dim);
  font-size:20px;cursor:pointer;font-family:var(--mono);
}

/* ---------- quiz ---------- */
.quiz-box{
  border:1.5px solid var(--cyan);border-radius:var(--radius);padding:28px;
  background:rgba(255,255,255,.02);box-shadow:var(--glow-cyan);
}
.progress-track{height:6px;border-radius:6px;background:rgba(255,255,255,.08);overflow:hidden;margin-bottom:22px;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--cyan),var(--green));width:0%;transition:width .3s;}
.q-count{font-family:var(--mono);font-size:12px;color:var(--text-faint);margin-bottom:6px;}
.q-text{font-size:18px;font-weight:700;margin-bottom:20px;}
.opt-list{display:flex;flex-direction:column;gap:10px;}
.opt{
  text-align:left;padding:13px 16px;border-radius:10px;border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.02);cursor:pointer;font-size:14px;color:var(--text);
  transition:.18s;font-family:var(--sans);
}
.opt:hover{border-color:var(--cyan);background:rgba(77,217,236,.06);}
.opt.correct{border-color:var(--green);background:rgba(70,224,138,.14);}
.opt.wrong{border-color:#ff6b6b;background:rgba(255,107,107,.12);}
.opt[disabled]{cursor:default;}
.result-emoji{font-size:48px;margin-bottom:8px;}
.score-big{font-family:var(--mono);font-size:38px;font-weight:800;color:var(--cyan-soft);}

/* ---------- calculator ---------- */
.calc-step{border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:18px 20px;margin-bottom:16px;}
.radio-list{display:flex;flex-direction:column;gap:9px;margin-top:8px;}
.radio-opt{display:flex;align-items:flex-start;gap:10px;font-size:13.8px;color:var(--text-dim);cursor:pointer;}
.radio-opt input{margin-top:3px;accent-color:var(--cyan);width:auto;}
.radio-opt span b{color:var(--text);}
.result-panel{border:1.5px solid var(--green);border-radius:14px;padding:26px;box-shadow:var(--glow-green);background:rgba(70,224,138,.04);}
.result-panel.alta{border-color:var(--warn);box-shadow:0 0 12px rgba(255,180,84,.4),0 0 30px rgba(255,180,84,.14);background:rgba(255,180,84,.04);}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid rgba(255,255,255,.06);padding:30px 24px;text-align:center;
  color:var(--text-faint);font-size:12px;font-family:var(--mono);margin-top:50px;
}
.site-footer a{color:var(--text-dim);text-decoration:none;}
.site-footer a:hover{color:var(--cyan-soft);}

/* ---------- misc ---------- */
.list-clean{list-style:none;display:flex;flex-direction:column;gap:10px;}
.list-clean li{font-size:14px;color:var(--text-dim);padding-left:18px;position:relative;}
.list-clean li::before{content:"›";position:absolute;left:0;color:var(--cyan);}

@media (max-width:640px){
  .nav-links{gap:10px;font-size:10.5px;}
  .card-grid{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:1fr 1fr;}
  .section{padding:34px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}