/* ===================================================================
   SOLUMEX — clon estático faithful · paleta teal #1e88a5 + solar #fa8208
   Fuentes: Montserrat (títulos) · Inter (cuerpo)
   =================================================================== */

:root {
  --teal: #1e88a5;
  --teal-dark: #176b85;
  --teal-light: #4da6c7;
  --solar: #fa8208;
  --solar-dark: #d16e06;
  --solar-light: #ffa552;
  --green: #22c55e;
  --green-dark: #16a34a;

  --navy: #0f2a36;
  --navy-2: #123544;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --line: #e5e9f0;

  --bg: #ffffff;
  --bg-soft: #f7f9fb;
  --bg-blue: #eff6ff;
  --bg-orange: #fff7ed;
  --bg-green: #f0fdf4;

  --grad-solar: linear-gradient(135deg, var(--teal), var(--solar));
  --grad-teal: linear-gradient(135deg, var(--teal-dark), var(--teal));
  --grad-band: linear-gradient(135deg, var(--teal) 0%, var(--teal-light) 100%);

  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 42, 54, .06);
  --shadow: 0 14px 40px rgba(15, 42, 54, .10);
  --shadow-lg: 0 28px 70px rgba(15, 42, 54, .18);
  --ease: cubic-bezier(.16, 1, .3, 1);
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: 'Montserrat', sans-serif; color: var(--ink); line-height: 1.12; margin: 0; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.text-solar { color: var(--solar); }
.text-green { color: var(--green-dark); }
.text-white-strong { color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: 'Inter', sans-serif; font-weight: 600; font-size: .95rem;
  padding: .72rem 1.4rem; border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
  white-space: nowrap;
}
.btn-lg { padding: .9rem 1.8rem; font-size: 1rem; }
.btn-sm { padding: .55rem 1.1rem; font-size: .85rem; }
.btn-block { display: flex; width: 100%; }
.btn-solar { background: var(--grad-solar); color: #fff; box-shadow: 0 10px 24px rgba(250, 130, 8, .32); }
.btn-solar:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(250, 130, 8, .42); }
.btn-ghost-light { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .6); backdrop-filter: blur(4px); }
.btn-ghost-light:hover { background: #fff; color: var(--teal-dark); transform: translateY(-3px); }
.btn-outline-teal { background: transparent; color: var(--teal-dark); border-color: var(--teal); }
.btn-outline-teal:hover { background: var(--teal); color: #fff; transform: translateY(-2px); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .8rem; font-weight: 600; letter-spacing: .02em;
  padding: .4rem .9rem; border-radius: 999px; margin-bottom: 1rem;
}
.badge-teal { background: var(--bg-blue); color: var(--teal-dark); }
.badge-light { background: rgba(255, 255, 255, .18); color: #fff; border: 1px solid rgba(255, 255, 255, .35); }

/* ===================================================================
   HEADER
   =================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 1rem; }
.logo { display: flex; align-items: center; gap: .5rem; }
.logo-img { height: 38px; width: auto; display: block; }
.footer-logo-img { height: 40px; width: auto; display: block; margin-bottom: 1rem; }
.logo-mark { display: inline-flex; }
.logo-word {
  font-family: 'Montserrat', sans-serif; font-weight: 600; font-size: 1.35rem;
  letter-spacing: .35em; color: var(--teal); padding-left: .35em;
}
.logo-word.light { color: #cfe7ef; }
.logo-u { color: var(--solar); font-weight: 800; }
.logo-dot { color: var(--solar); }

.main-nav { display: flex; align-items: center; gap: 1.15rem; }
.main-nav a { font-size: .9rem; font-weight: 500; color: var(--text); position: relative; padding: .2rem 0; white-space: nowrap; }
.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: -4px; height: 2px; width: 0;
  background: var(--solar); transition: width .25s var(--ease);
}
.main-nav a:hover { color: var(--teal-dark); }
.main-nav a:hover::after { width: 100%; }
.nav-cta { margin-left: .4rem; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2.5px; background: var(--ink); border-radius: 2px; transition: .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ===================================================================
   HERO
   =================================================================== */
.hero { position: relative; color: #fff; overflow: hidden; padding: clamp(3.5rem, 7vw, 6.5rem) 0; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal) 55%, var(--teal-light) 100%);
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,.07) 0 2px, transparent 2px 46px),
    repeating-linear-gradient(25deg, rgba(255,255,255,.05) 0 2px, transparent 2px 46px);
  mix-blend-mode: overlay;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(90% 70% at 88% 12%, rgba(250,130,8,.42), transparent 58%),
              linear-gradient(180deg, rgba(15,42,54,.04), rgba(15,42,54,.32));
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center;
}
.hero-title { font-size: clamp(2.6rem, 6vw, 4.6rem); font-weight: 800; color: #fff; margin-bottom: .4rem; }
.hero-sub { font-family: 'Montserrat', sans-serif; font-size: clamp(1.3rem, 2.6vw, 2rem); font-weight: 500; color: rgba(255,255,255,.92); margin-bottom: 1.2rem; }
.hero-lead { font-size: 1.1rem; color: rgba(255,255,255,.92); max-width: 36rem; }
.hero-lead strong { color: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1.6rem 0 2.4rem; }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); gap: clamp(1rem, 3vw, 2.4rem); }
.stat { display: flex; flex-direction: column; }
.stat-num { font-family: 'Montserrat', sans-serif; font-size: 1.9rem; font-weight: 800; color: var(--solar-light); line-height: 1; }
.stat-num small { font-size: 1rem; font-weight: 600; }
.stat-label { font-size: .82rem; color: rgba(255,255,255,.8); margin-top: .2rem; }

.hero-media { position: relative; }
.hero-card {
  background: rgba(15, 42, 54, .55); border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  aspect-ratio: 16/9; overflow: hidden;
}
.hero-card .video-poster { width: 100%; height: 100%; border-radius: var(--radius); }
.hero-card .hero-video { width: 100%; height: 100%; border: 0; display: block; object-fit: cover; }
.hero-badge-float {
  position: absolute; left: -14px; bottom: -22px;
  background: #fff; color: var(--ink); border-radius: var(--radius-sm);
  padding: .8rem 1.2rem; box-shadow: var(--shadow); display: flex; flex-direction: column;
  border-left: 4px solid var(--green);
}
.hbf-num { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 1.5rem; color: var(--green-dark); line-height: 1; }
.hbf-label { font-size: .78rem; color: var(--muted); }

/* video poster generic */
.video-poster {
  position: relative; background: var(--grad-teal); border: 0; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: #fff; overflow: hidden;
}
.play-btn {
  width: 62px; height: 62px; border-radius: 50%;
  background: rgba(255,255,255,.92); color: var(--teal-dark);
  display: grid; place-items: center; font-size: 1.4rem; padding-left: 5px;
  box-shadow: var(--shadow); transition: transform .25s var(--ease);
}
.video-poster:hover .play-btn { transform: scale(1.12); }
.vp-label { position: absolute; bottom: 12px; left: 14px; font-weight: 600; font-size: .9rem; }

/* ===================================================================
   SECTIONS — generic
   =================================================================== */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.alt-bg { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 48rem; margin: 0 auto 3rem; }
.section-title { font-size: clamp(1.9rem, 4vw, 2.9rem); font-weight: 800; margin-bottom: 1rem; }
.section-desc { color: var(--muted); font-size: 1.06rem; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }

/* ---------- Pillars ---------- */
.pillar-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2.2rem 1.8rem; text-align: center; box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.pillar-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.pillar-card h3 { margin: 1rem 0 .6rem; font-size: 1.25rem; }
.pillar-card p { color: var(--muted); font-size: .96rem; margin: 0; }
.pillar-icon, .service-icon, .contact-icon {
  width: 60px; height: 60px; border-radius: 16px; margin: 0 auto;
  display: grid; place-items: center; font-size: 1.5rem; color: #fff;
}
.icon-teal { background: var(--grad-teal); }
.icon-solar { background: var(--grad-solar); }
.icon-green { background: linear-gradient(135deg, var(--green-dark), var(--green)); }

/* ===================================================================
   SOLUCIONES
   =================================================================== */
.solution-hero {
  position: relative; color: #fff; border-radius: var(--radius);
  background: var(--grad-teal); overflow: hidden;
  padding: clamp(2.4rem, 5vw, 3.6rem); text-align: center; box-shadow: var(--shadow);
  margin-bottom: 1.6rem;
}
.solution-hero::after {
  content: ''; position: absolute; inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255,255,255,.05) 0 2px, transparent 2px 44px);
  pointer-events: none;
}
.solution-hero > * { position: relative; z-index: 1; }
.solution-hero-icon { font-size: 2.4rem; width: 72px; height: 72px; margin: 0 auto 1rem; background: var(--grad-solar); border-radius: 18px; display: grid; place-items: center; }
.solution-hero h3 { color: #fff; font-size: clamp(1.6rem, 3.4vw, 2.4rem); margin-bottom: 1rem; }
.solution-hero > p { color: rgba(255,255,255,.92); max-width: 46rem; margin: 0 auto 1.8rem; }
.solution-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; max-width: 40rem; margin: 0 auto 1.8rem; }
.solution-stats .ss-num { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 2rem; color: var(--solar-light); display: block; }
.solution-stats .ss-lbl { font-size: .82rem; color: rgba(255,255,255,.82); }
.solution-tags { font-size: .9rem; color: rgba(255,255,255,.78); margin-bottom: 1.6rem; }

.solution-pair { margin-bottom: 1.6rem; align-items: stretch; }
.solution-card {
  border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; color: #fff; position: relative; overflow: hidden;
}
.solution-card.teal { background: var(--grad-teal); }
.solution-card.solar { background: var(--grad-solar); }
.sc-head { display: flex; align-items: center; gap: .8rem; margin-bottom: 1rem; }
.sc-icon { font-size: 1.8rem; }
.solution-card h3 { color: #fff; font-size: 1.4rem; }
.solution-card > p { color: rgba(255,255,255,.92); }
.sc-stats { display: flex; gap: 2rem; margin: .4rem 0 1.2rem; }
.sc-stats span { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 1.7rem; display: block; }
.sc-stats small { font-size: .78rem; color: rgba(255,255,255,.82); }
.sc-list { list-style: none; padding: 0; margin: 0 0 1.2rem; display: grid; gap: .7rem; }
.sc-list li {
  background: rgba(255,255,255,.14); border-radius: var(--radius-sm);
  padding: .7rem .9rem; font-size: .9rem; backdrop-filter: blur(2px);
}
.sc-sectors { font-size: .85rem; color: rgba(255,255,255,.85); margin-bottom: 1.2rem; }
.solution-card .btn { margin-top: auto; align-self: flex-start; }
.solution-card.teal .btn-outline-teal { color: #fff; border-color: rgba(255,255,255,.7); }
.solution-card.teal .btn-outline-teal:hover { background: #fff; color: var(--teal-dark); }

/* Alumbrado público */
.solution-light { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.8rem, 4vw, 3rem); box-shadow: var(--shadow-sm); }
.light-head { text-align: center; margin-bottom: 2rem; }
.light-head h3 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: .6rem; }
.light-head p { color: var(--muted); }
.light-body { align-items: stretch; }
.light-block h4 { font-size: 1.15rem; margin-bottom: 1rem; }
.light-block.panel-teal { background: var(--grad-teal); color: #fff; border-radius: var(--radius); padding: 1.8rem; }
.light-block.panel-teal h4 { color: #fff; }
.check-list { list-style: none; padding: 0; margin: 0 0 1.4rem; display: grid; gap: .7rem; }
.check-list li { position: relative; padding-left: 1.8rem; font-size: .94rem; color: var(--text); }
.check-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--green-dark); font-weight: 800; }
.check-list.light li { color: rgba(255,255,255,.94); }
.check-list.light li::before { color: var(--solar-light); }
.light-stats { display: flex; gap: 2rem; }
.light-stats span { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 1.7rem; color: var(--teal-dark); display: block; }
.light-stats small { font-size: .78rem; color: var(--muted); }

/* ===================================================================
   SERVICIOS
   =================================================================== */
.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2rem; box-shadow: var(--shadow-sm); text-align: center;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card h3 { margin: 1rem 0 .6rem; font-size: 1.2rem; }
.service-card > p { color: var(--muted); font-size: .94rem; }
.dot-list { list-style: none; padding: 0; margin: 1rem 0 0; text-align: left; display: inline-block; }
.dot-list li { position: relative; padding-left: 1.3rem; font-size: .9rem; margin-bottom: .4rem; color: var(--text); }
.dot-list li::before { content: ''; position: absolute; left: 0; top: .55rem; width: 7px; height: 7px; border-radius: 50%; background: var(--solar); }

/* ===================================================================
   FINANCIAMIENTO
   =================================================================== */
.logo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-bottom: 2rem; }
.logo-chip {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  min-height: 92px; display: grid; place-items: center;
  font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 1.15rem;
  color: var(--teal-dark); letter-spacing: .01em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), color .25s;
}
.logo-chip:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); color: var(--solar-dark); }
.financing-note { text-align: center; max-width: 50rem; margin: 0 auto; color: var(--muted); font-size: .98rem; }

/* video grid */
.video-grid .video-poster {
  aspect-ratio: 16/9; border-radius: var(--radius); box-shadow: var(--shadow-sm);
  background-size: cover; background-position: center;
}
.video-grid .video-poster::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,42,54,.12), rgba(15,42,54,.58));
  transition: background .25s var(--ease);
}
.video-grid .video-poster:hover::before { background: linear-gradient(180deg, rgba(15,42,54,.22), rgba(15,42,54,.5)); }
.video-grid .video-poster .play-btn, .video-grid .video-poster .vp-label { position: relative; z-index: 1; }

/* ===================================================================
   BANDS
   =================================================================== */
.band { color: #fff; padding: clamp(3rem, 6vw, 4.6rem) 0; position: relative; overflow: hidden; }
.band-teal { background: var(--grad-band); }
.band-solar { background: var(--grad-solar); }
.band::after {
  content: ''; position: absolute; inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255,255,255,.06) 0 2px, transparent 2px 48px);
  pointer-events: none;
}
.band .container { position: relative; z-index: 1; }
.band-inner { text-align: center; max-width: 46rem; margin: 0 auto; }
.band-icon { width: 64px; height: 64px; margin: 0 auto 1.2rem; background: rgba(255,255,255,.18); border-radius: 50%; display: grid; place-items: center; font-size: 1.6rem; }
.band-inner h2 { color: #fff; font-size: clamp(1.7rem, 3.6vw, 2.6rem); margin-bottom: 1rem; }
.band-inner p { color: rgba(255,255,255,.92); margin-bottom: 1.8rem; }
.band-title { text-align: center; color: #fff; font-size: clamp(1.8rem, 4vw, 2.7rem); margin-bottom: 2.4rem; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; max-width: 60rem; margin: 0 auto; }
.why-item {
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius-sm); padding: 1rem 1.2rem; font-weight: 600; font-size: .96rem;
  backdrop-filter: blur(2px);
}

/* ===================================================================
   CONTACTO
   =================================================================== */
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.8rem 1.6rem; text-align: center; box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.contact-card h3 { margin: 1rem 0 .6rem; font-size: 1.1rem; }
.contact-card p { margin: 0 0 .3rem; font-size: .95rem; }
.contact-card a:hover { color: var(--solar-dark); }
.contact-card small { color: var(--muted); font-size: .8rem; }

/* ===================================================================
   FOOTER
   =================================================================== */
.site-footer { background: var(--navy); color: #c8d6dd; padding-top: 3.4rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 2.4rem; padding-bottom: 2.6rem; }
.footer-brand .logo-word { font-size: 1.3rem; }
.footer-brand p { font-size: .9rem; color: #9fb4bd; margin-top: 1rem; }
.footer-cert { font-size: .82rem !important; color: #7f97a1 !important; }
.social { display: flex; gap: .6rem; margin-top: 1.2rem; }
.social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,.08); display: grid; place-items: center; font-size: .9rem; transition: background .25s, transform .25s; }
.social a:hover { background: var(--solar); color: #fff; transform: translateY(-3px); }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 1.1rem; }
.footer-col a { display: block; font-size: .9rem; color: #9fb4bd; margin-bottom: .6rem; transition: color .2s; }
.footer-col a:hover { color: var(--solar-light); }
.footer-contact p { font-size: .88rem; color: #9fb4bd; margin-bottom: .8rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 1.2rem 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-bottom span { font-size: .8rem; color: #7f97a1; }

/* ===================================================================
   MODALES
   =================================================================== */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 1rem; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 42, 54, .6); backdrop-filter: blur(4px); }
.modal-box {
  position: relative; z-index: 1; background: #fff; border-radius: var(--radius);
  width: 100%; max-width: 520px; padding: 2.2rem; box-shadow: var(--shadow-lg);
  max-height: 92vh; overflow: auto; animation: pop .35s var(--ease);
}
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.modal-close { position: absolute; top: 14px; right: 14px; background: var(--bg-soft); border: 0; width: 36px; height: 36px; border-radius: 50%; cursor: pointer; font-size: 1rem; color: var(--muted); }
.modal-close:hover { background: var(--line); }
.modal-head { text-align: center; margin-bottom: 1.6rem; }
.modal-head h3 { font-size: 1.5rem; margin-bottom: .6rem; }
.modal-head p { font-size: .92rem; color: var(--muted); }
.calc-form label { display: block; font-weight: 600; font-size: .92rem; color: var(--ink); margin-bottom: 1.2rem; }
.calc-form input, .calc-form select {
  width: 100%; margin-top: .4rem; padding: .75rem .9rem; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); font-family: inherit; font-size: 1rem; color: var(--ink);
}
.calc-form input:focus, .calc-form select:focus { outline: none; border-color: var(--teal); }
.calc-form small { display: block; font-weight: 400; color: var(--muted); font-size: .78rem; margin-top: .35rem; }
.field-row { display: flex; gap: .6rem; }
.field-row input { flex: 1; }
.field-row select { width: auto; flex: 0 0 auto; }

.calc-result { margin-top: 1.4rem; border-top: 1px solid var(--line); padding-top: 1.4rem; }
.calc-result h4 { text-align: center; margin-bottom: 1.2rem; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.2rem; }
.result-grid > div { background: var(--bg-soft); border-radius: var(--radius-sm); padding: 1rem; text-align: center; }
.r-num { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 1.5rem; color: var(--teal-dark); display: block; }
.result-grid small { font-size: .76rem; color: var(--muted); }
.result-note { font-size: .8rem; color: var(--muted); text-align: center; margin: 1rem 0 1.2rem; }

.video-box { max-width: 880px; padding: 1.2rem; }
.video-frame { aspect-ratio: 16/9; border-radius: var(--radius-sm); overflow: hidden; background: #000; }
.video-frame iframe { width: 100%; height: 100%; border: 0; }

/* ===================================================================
   REVEAL ANIMATION
   =================================================================== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ===================================================================
   RESPONSIVE
   =================================================================== */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; max-width: 520px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .main-nav {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch;
    background: #fff; padding: 1.2rem 1.5rem 1.8rem; gap: .2rem; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); transform: translateY(-130%); transition: transform .35s var(--ease); z-index: 49;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: .85rem 0; border-bottom: 1px solid var(--line); }
  .nav-cta { margin: .8rem 0 0; }
  .nav-toggle { display: flex; }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4, .solution-pair, .light-body, .logo-grid, .why-grid, .result-grid { grid-template-columns: 1fr; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom .container { flex-direction: column; }
  .solution-stats { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===================================================================
   PÁGINAS INTERIORES — hero compacto
   =================================================================== */
.page-hero { position: relative; color: #fff; overflow: hidden; padding: clamp(3rem, 6vw, 5rem) 0; }
.page-hero .hero-bg { position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal) 55%, var(--teal-light) 100%); }
.page-hero .hero-bg::before { content:''; position:absolute; inset:0;
  background: repeating-linear-gradient(115deg, rgba(255,255,255,.06) 0 2px, transparent 2px 46px); }
.page-hero .hero-bg::after { content:''; position:absolute; inset:0;
  background: radial-gradient(90% 70% at 88% 12%, rgba(250,130,8,.40), transparent 58%); }
.page-hero .container { position: relative; z-index: 1; text-align: center; }
.page-hero .hero-title { font-size: clamp(2.1rem,4.5vw,3.4rem); margin: .4rem 0 .8rem; }
.page-hero .hero-lead { max-width: 44rem; margin: 0 auto; }

/* ===================================================================
   FORMULARIOS
   =================================================================== */
.form-card { background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding: clamp(1.4rem,3vw,2rem); box-shadow: var(--shadow-sm); margin-bottom: 1.4rem; }
.form-card h2 { font-size: 1.4rem; margin-bottom: 1.2rem; }
.form-card h3 { font-size: 1.1rem; margin-bottom: 1rem; display:flex; align-items:center; gap:.6rem; }
.req, .opt { font-size:.7rem; font-weight:600; padding:.2rem .6rem; border-radius:999px; }
.req { background: var(--bg-orange); color: var(--solar-dark); }
.opt { background: var(--bg-blue); color: var(--teal-dark); }
.app-form label, .calc-col label { display:block; font-weight:600; font-size:.9rem; color:var(--ink); margin-bottom:1rem; }
.app-form input, .app-form textarea, .app-form select,
.calc-col input[type=text], .calc-col input[type=tel], .calc-col input[type=email], .calc-col select {
  width:100%; margin-top:.4rem; padding:.72rem .9rem; border:1.5px solid var(--line);
  border-radius:var(--radius-sm); font-family:inherit; font-size:1rem; color:var(--ink); background:#fff; }
.app-form input:focus, .app-form textarea:focus, .app-form select:focus,
.calc-col input:focus, .calc-col select:focus { outline:none; border-color:var(--teal); box-shadow:0 0 0 3px rgba(30,136,165,.12); }
.app-form textarea { resize: vertical; }
.alert { padding:.85rem 1rem; border-radius:var(--radius-sm); font-size:.9rem; font-weight:500; margin-bottom:1rem; }
.alert-ok { background: var(--bg-green); color: var(--green-dark); border:1px solid #bbf7d0; }
.alert-err { background:#fef2f2; color:#b91c1c; border:1px solid #fecaca; }

/* contacto */
.contact-layout { align-items:start; }
.contact-info { display:grid; gap:1rem; }
.contact-info .contact-card { text-align:left; display:flex; flex-direction:column; }

/* ===================================================================
   CALCULADORA
   =================================================================== */
.calc-layout { display:grid; grid-template-columns: 1.4fr 1fr; gap:1.6rem; align-items:start; }
.calc-result-col { position:sticky; top:90px; }
.range-label { display:block; }
.range-label input[type=range] { width:100%; margin-top:.6rem; accent-color: var(--teal); }
.hint { font-size:.82rem; color:var(--muted); background:var(--bg-blue); padding:.6rem .8rem; border-radius:var(--radius-sm); margin:0; }
.check-inline { display:flex; align-items:center; gap:.5rem; font-weight:500 !important; }
.check-inline input { width:auto !important; margin:0 !important; }
.radio-grid { display:grid; grid-template-columns:1fr 1fr; gap:.8rem; }
.radio-card { display:flex; align-items:center; gap:.6rem; border:1.5px solid var(--line); border-radius:var(--radius-sm);
  padding:.8rem; cursor:pointer; margin:0 !important; transition:border-color .2s, background .2s; }
.radio-card:has(input:checked) { border-color:var(--teal); background:var(--bg-blue); }
.radio-card span { display:flex; flex-direction:column; }
.radio-card small { font-weight:400; color:var(--muted); }
.proposal { background:linear-gradient(180deg,#fff,var(--bg-blue)); border:2px solid rgba(30,136,165,.2); }
.proposal-title { color:var(--teal-dark); justify-content:center; }
.proposal-sub { text-align:center; font-size:.85rem; color:var(--muted); margin-bottom:1.2rem; }
.proposal-grid { display:grid; grid-template-columns:1fr 1fr; gap:.8rem; }
.proposal-grid > div { background:#fff; border:1px solid var(--line); border-radius:var(--radius-sm); padding:.9rem; text-align:center; }
.p-num { font-family:'Montserrat',sans-serif; font-weight:800; font-size:1.35rem; color:var(--teal-dark); display:block; }
.proposal-grid small { font-size:.74rem; color:var(--muted); }
.proposal-co2 { text-align:center; font-size:.9rem; margin:1rem 0; color:var(--green-dark); }
.proposal-cta { border-top:1px solid var(--line); padding-top:1rem; }
.ready-hint { font-size:.82rem; color:var(--muted); text-align:center; margin-bottom:.8rem; }

/* ===================================================================
   AUTH
   =================================================================== */
.auth-wrap { min-height: calc(100vh - 72px); display:grid; place-items:center; padding:2rem 1rem;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal) 60%, var(--solar) 130%); }
.auth-card { background:#fff; border-radius:var(--radius); box-shadow:var(--shadow-lg); padding:2.4rem; width:100%; max-width:420px; position:relative; }
.auth-back { font-size:.82rem; color:var(--muted); }
.auth-brand { text-align:center; margin:1rem 0 1.4rem; }
.auth-brand .logo-word { font-size:1.4rem; color:var(--teal); }
.auth-brand p { color:var(--muted); font-size:.85rem; margin:.3rem 0 0; }
.auth-card h1 { text-align:center; font-size:1.6rem; margin-bottom:1.4rem; }
.auth-toggle { display:block; width:100%; margin-top:1rem; background:none; border:0; color:var(--teal-dark); font-weight:600; cursor:pointer; font-size:.88rem; }

/* ===================================================================
   ADMIN
   =================================================================== */
.admin-body { background: var(--bg-soft); }
.admin-header { background:var(--navy); color:#fff; padding:1rem 1.5rem; display:flex; align-items:center; gap:1.2rem; }
.admin-header .logo-word { color:#cfe7ef; font-size:1.2rem; }
.admin-title { font-weight:600; }
.admin-user { margin-left:auto; font-size:.85rem; color:#9fb4bd; }
.admin-user a { color:var(--solar-light); }
.admin-main { max-width:1300px; margin:0 auto; padding:2rem 1.5rem; }
.admin-main h2 { font-size:1.3rem; margin:2rem 0 1rem; }
.admin-cards { display:flex; gap:1rem; }
.admin-stat { background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:1.2rem 1.6rem; box-shadow:var(--shadow-sm); }
.admin-stat span { font-family:'Montserrat',sans-serif; font-weight:800; font-size:1.8rem; color:var(--teal-dark); display:block; }
.admin-stat small { color:var(--muted); font-size:.82rem; }
.table-wrap { overflow-x:auto; background:#fff; border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-sm); }
.admin-table { width:100%; border-collapse:collapse; font-size:.86rem; }
.admin-table th { background:var(--bg-blue); color:var(--teal-dark); text-align:left; padding:.8rem; font-weight:600; white-space:nowrap; }
.admin-table td { padding:.7rem .8rem; border-top:1px solid var(--line); vertical-align:top; }
.admin-table td.msg { max-width:240px; }
.admin-table .empty { text-align:center; color:var(--muted); padding:1.5rem; }
.inline-form { display:inline; }
.inline-form select { padding:.35rem .5rem; border:1px solid var(--line); border-radius:6px; font-family:inherit; }
.btn-del { background:none; border:0; cursor:pointer; font-size:1rem; opacity:.7; }
.btn-del:hover { opacity:1; }

/* ===================================================================
   RESPONSIVE de lo nuevo
   =================================================================== */
@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calc-result-col { position: static; }
}
@media (max-width: 720px) {
  .contact-layout { grid-template-columns: 1fr; }
  .radio-grid, .proposal-grid { grid-template-columns: 1fr; }
}

/* ===================================================================
   SECCIONES CON IMAGEN DE FONDO REAL (paridad con solumex.net)
   =================================================================== */
.imgbg { position: relative; background-size: cover; background-position: center; }
.imgbg > .container, .imgbg > * { position: relative; z-index: 1; }
.imgbg::before { content:''; position:absolute; inset:0; z-index:0; }
/* overlay teal translúcido */
.ov-teal::before { background: linear-gradient(135deg, rgba(23,107,133,.92), rgba(30,136,165,.82)); }
/* overlay verde translúcido (Nuestras Soluciones / Residencial) */
.ov-green::before { background: linear-gradient(135deg, rgba(20,83,45,.86), rgba(22,163,74,.74)); }
/* overlay naranja translúcido */
.ov-solar::before { background: linear-gradient(135deg, rgba(209,110,6,.90), rgba(250,130,8,.80)); }
/* overlay oscuro para legibilidad */
.ov-dark::before { background: linear-gradient(135deg, rgba(15,42,54,.82), rgba(15,42,54,.62)); }

/* tarjeta de solución con imagen de fondo */
.sol-card-img { position: relative; overflow: hidden; background-size: cover; background-position: center; color:#fff; border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow-sm); }
.sol-card-img::before { content:''; position:absolute; inset:0; }
.sol-card-img.teal::before { background: linear-gradient(135deg, rgba(23,107,133,.93), rgba(30,136,165,.84)); }
.sol-card-img.solar::before { background: linear-gradient(135deg, rgba(209,110,6,.92), rgba(250,130,8,.82)); }
.sol-card-img.green::before { background: linear-gradient(135deg, rgba(20,83,45,.90), rgba(22,163,74,.80)); }
.sol-card-img > * { position: relative; z-index: 1; }

/* servicios especializados con imagen de fondo */
.service-img { position:relative; overflow:hidden; background-size:cover; background-position:center; color:#fff; border-radius:var(--radius); padding:2.2rem 1.8rem; min-height:240px; display:flex; flex-direction:column; box-shadow:var(--shadow-sm); transition:transform .3s var(--ease); }
.service-img:hover { transform:translateY(-6px); }
.service-img::before { content:''; position:absolute; inset:0; background:linear-gradient(180deg, rgba(15,42,54,.55), rgba(15,42,54,.82)); }
.service-img > * { position:relative; z-index:1; }
.service-img h3 { color:#fff; }
.service-img p { color:rgba(255,255,255,.9); }

/* logos de financiamiento reales */
.fin-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:1.4rem; align-items:center; }
.fin-logo { background:#fff; border:1px solid var(--line); border-radius:var(--radius-sm); padding:1.2rem; min-height:110px; display:grid; place-items:center; transition:transform .25s var(--ease), box-shadow .25s; }
.fin-logo:hover { transform:translateY(-4px); box-shadow:var(--shadow-sm); }
.fin-logo img { max-width:100%; max-height:64px; width:auto; object-fit:contain; }

/* imagen suelta dentro de tarjeta/sección */
.section-img { width:100%; border-radius:var(--radius); box-shadow:var(--shadow); display:block; }

@media (max-width:900px){ .fin-grid{ grid-template-columns:repeat(2,1fr);} }

/* ===================================================================
   CRONOGRAMA / TIMELINE (Nuestra Trayectoria — paridad nosotros)
   =================================================================== */
.timeline { position: relative; max-width: 820px; margin: 0 auto; padding: 1rem 0; }
.timeline::before { content:''; position:absolute; left: 24px; top:0; bottom:0; width:3px;
  background: linear-gradient(180deg, var(--teal), var(--solar)); border-radius:3px; }
.tl-item { position: relative; padding: 0 0 1.8rem 64px; }
.tl-item::before { content:''; position:absolute; left:14px; top:4px; width:23px; height:23px; border-radius:50%;
  background:#fff; border:4px solid var(--teal); box-shadow:0 0 0 4px rgba(30,136,165,.15); }
.tl-item:nth-child(even)::before { border-color: var(--solar); box-shadow:0 0 0 4px rgba(250,130,8,.15); }
.tl-item h3 { font-size:1.15rem; margin-bottom:.3rem; }
.tl-item p { color: var(--muted); margin:0; font-size:.95rem; }
@media (max-width:600px){ .timeline::before{left:16px} .tl-item{padding-left:48px} .tl-item::before{left:6px} }
.solution-card.green { background: linear-gradient(135deg, var(--green-dark), var(--green)); }