/* ============================================================
   AGROKALOSTEC — Estilos sitio público
   Paleta: azul profundo + teal + blanco
   Mobile-first responsive
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --primary:     #0A2463;
  --primary-lt:  #1340A0;
  --accent:      #00BFA5;
  --accent-dk:   #009688;
  --dark:        #0D1117;
  --dark-2:      #1A1F2E;
  --gray:        #6B7280;
  --gray-lt:     #E5E7EB;
  --light:       #F8FAFC;
  --white:       #FFFFFF;
  --text:        #1A202C;
  --text-muted:  #4A5568;
  --radius:      12px;
  --radius-sm:   6px;
  --shadow:      0 4px 24px rgba(10,36,99,.12);
  --shadow-lg:   0 12px 40px rgba(10,36,99,.18);
  --transition:  .25s ease;
  --font:        'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.6; }
img  { max-width: 100%; display: block; }
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ── Utilidades ─────────────────────────────────────────────── */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
.section   { padding: 5rem 0; }
.section-alt { background: var(--light); }
.section-dark { background: var(--dark); color: var(--white); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; color: var(--primary); margin-bottom: .6rem; }
.section-dark .section-header h2 { color: var(--white); }
.section-header p  { color: var(--text-muted); font-size: 1.05rem; max-width: 580px; margin: 0 auto; }
.section-dark .section-header p { color: rgba(255,255,255,.7); }

.accent-line { display: inline-block; width: 52px; height: 4px; background: var(--accent); border-radius: 4px; margin-bottom: 1rem; }

/* ── Botones ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem; border-radius: var(--radius-sm);
  font-weight: 600; font-size: .95rem; border: none;
  transition: all var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-dk); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,191,165,.35); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.6); }
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: var(--white); }
.btn-dark { background: var(--primary); color: var(--white); }
.btn-dark:hover { background: var(--primary-lt); transform: translateY(-2px); }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1rem 0;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(10,36,99,.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.nav-logo img { height: 48px; width: auto; }
.nav-logo-text { font-size: 1.4rem; font-weight: 700; color: var(--white); letter-spacing: -.5px; }
.nav-logo-text span { color: var(--accent); }

.nav-menu { display: flex; align-items: center; gap: .25rem; }
.nav-menu a {
  color: rgba(255,255,255,.85); font-size: .92rem; font-weight: 500;
  padding: .5rem .85rem; border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-menu a:hover { color: var(--white); background: rgba(255,255,255,.1); }
.nav-menu .btn { margin-left: .5rem; padding: .55rem 1.25rem; }

.lang-toggle {
  display: flex; align-items: center; gap: 4px;
  background: rgba(255,255,255,.12); border-radius: 20px; padding: 3px;
  margin-left: .5rem;
}
.lang-toggle button {
  background: none; border: none; color: rgba(255,255,255,.6);
  font-size: .8rem; font-weight: 600; padding: 3px 9px;
  border-radius: 16px; transition: all var(--transition);
}
.lang-toggle button.active { background: var(--accent); color: var(--white); }

/* Burger */
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: .4rem; }
.nav-burger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: all var(--transition); }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, var(--dark-2) 55%, #0D2B5E 100%);
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300BFA5' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content { position: relative; z-index: 1; max-width: 720px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(0,191,165,.15); border: 1px solid rgba(0,191,165,.3);
  color: var(--accent); border-radius: 20px; padding: .35rem 1rem;
  font-size: .82rem; font-weight: 600; letter-spacing: .5px;
  text-transform: uppercase; margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800;
  color: var(--white); line-height: 1.15; margin-bottom: 1.25rem;
  letter-spacing: -1px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: clamp(1rem, 2vw, 1.2rem); color: rgba(255,255,255,.78);
  margin-bottom: 2.25rem; max-width: 560px; line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero-stats {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 2rem;
  margin-top: 4rem; padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat .lbl { font-size: .85rem; color: rgba(255,255,255,.6); margin-top: .1rem; }

/* ── Intro (About) ──────────────────────────────────────────── */
.intro-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
@media(min-width:768px){ .intro-grid { grid-template-columns: 1fr 1fr; } }
.intro-text h2 { font-size: clamp(1.7rem,3.5vw,2.4rem); font-weight: 700; color: var(--primary); margin-bottom: 1.2rem; }
.intro-text p  { color: var(--text-muted); font-size: 1.05rem; line-height: 1.8; margin-bottom: 1rem; }
.intro-features { display: flex; flex-direction: column; gap: .75rem; margin-top: 1.5rem; }
.intro-feature  { display: flex; align-items: flex-start; gap: .75rem; }
.intro-feature .icon { width: 28px; height: 28px; background: rgba(0,191,165,.12); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--accent); font-size: .9rem; margin-top: .1rem; }
.intro-feature p { color: var(--text-muted); font-size: .95rem; }

.intro-visual {
  background: linear-gradient(135deg, var(--primary), var(--dark-2));
  border-radius: var(--radius); padding: 2.5rem;
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  box-shadow: var(--shadow-lg);
}
.intro-card {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm); padding: 1.25rem;
  color: var(--white); transition: background var(--transition);
}
.intro-card:hover { background: rgba(0,191,165,.12); }
.intro-card .num { font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.intro-card .lbl { font-size: .8rem; color: rgba(255,255,255,.6); margin-top: .2rem; }

/* ── Servicios ──────────────────────────────────────────────── */
.services-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media(min-width:640px){ .services-grid { grid-template-columns: repeat(2,1fr); } }
@media(min-width:1024px){ .services-grid { grid-template-columns: repeat(4,1fr); } }

.service-card {
  background: var(--white); border: 1px solid var(--gray-lt);
  border-radius: var(--radius); padding: 2rem;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px; background: var(--accent); transform: scaleX(0);
  transition: transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.svc-icon {
  width: 52px; height: 52px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(10,36,99,.08), rgba(0,191,165,.12));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 1.25rem;
}
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .6rem; color: var(--primary); }
.service-card p  { color: var(--text-muted); font-size: .93rem; line-height: 1.7; }

/* ── Casos de éxito ─────────────────────────────────────────── */
.cases-grid { display: grid; grid-template-columns: 1fr; gap: 1.75rem; }
@media(min-width:640px){ .cases-grid { grid-template-columns: repeat(2,1fr); } }
@media(min-width:1024px){ .cases-grid { grid-template-columns: repeat(3,1fr); } }

.case-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); overflow: hidden;
  transition: all var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,.3); border-color: rgba(0,191,165,.3); }

/* Case cards on light background (section-alt) */
.section-alt .case-card { background: var(--white); border: 1px solid var(--gray-lt); box-shadow: var(--shadow); }
.section-alt .case-card:hover { box-shadow: var(--shadow-lg); border-color: var(--accent); transform: translateY(-4px); }
.section-alt .case-body h3 { color: var(--primary); }
.section-alt .case-body p  { color: var(--text-muted); }
.section-alt .cases-empty  { color: var(--text-muted); }
.case-card img { width: 100%; height: 200px; object-fit: cover; }
.case-img-placeholder { width: 100%; height: 200px; background: linear-gradient(135deg, var(--primary-lt), var(--accent-dk)); display: flex; align-items: center; justify-content: center; font-size: 3rem; }
.case-body { padding: 1.5rem; }
.case-body h3 { color: var(--white); font-size: 1.05rem; font-weight: 600; margin-bottom: .6rem; }
.case-body p  { color: rgba(255,255,255,.65); font-size: .9rem; line-height: 1.7; }

.cases-empty { text-align: center; color: rgba(255,255,255,.5); padding: 3rem 0; font-size: 1rem; }

/* ── Logos clientes ─────────────────────────────────────────── */
.logos-track {
  display: flex; flex-wrap: wrap; justify-content: center;
  align-items: center; gap: 2.5rem; padding: 1rem 0;
}
.logo-item {
  opacity: .55; transition: opacity var(--transition), filter var(--transition);
  filter: grayscale(1);
}
.logo-item:hover { opacity: 1; filter: grayscale(0); }
.logo-item img { height: 48px; width: auto; max-width: 140px; object-fit: contain; }
.logos-empty { text-align: center; color: var(--text-muted); padding: 2rem 0; }
.section-dark .logos-empty { color: rgba(255,255,255,.5); }
.section-dark .section-header h2 { color: var(--white); }
.section-dark .section-header p  { color: rgba(255,255,255,.7); }

/* ── Cotizador ──────────────────────────────────────────────── */
.quote-wrapper {
  max-width: 700px; margin: 0 auto;
  background: var(--white); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: clamp(1.75rem,5vw,3rem);
}
.form-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
@media(min-width:640px){ .form-grid { grid-template-columns: 1fr 1fr; } }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: .88rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%; padding: .75rem 1rem;
  border: 1.5px solid var(--gray-lt); border-radius: var(--radius-sm);
  font-family: inherit; font-size: .95rem; color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,191,165,.15);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-submit { text-align: center; margin-top: 1.5rem; }
.form-submit .btn { width: 100%; max-width: 260px; justify-content: center; }

.form-message {
  margin-top: 1rem; padding: .9rem 1.2rem;
  border-radius: var(--radius-sm); font-size: .95rem;
  text-align: center; display: none;
}
.form-message.success { background: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; display: block; }
.form-message.error   { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; display: block; }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--dark); color: rgba(255,255,255,.7);
  padding: 3.5rem 0 1.5rem;
}
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; margin-bottom: 3rem; }
@media(min-width:768px){ .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-brand .logo-text { font-size: 1.4rem; font-weight: 700; color: var(--white); margin-bottom: .8rem; }
.footer-brand .logo-text span { color: var(--accent); }
.footer-brand p { font-size: .92rem; line-height: 1.7; max-width: 280px; }
.footer h4 { color: var(--white); font-size: .95rem; font-weight: 600; margin-bottom: 1rem; }
.footer ul { display: flex; flex-direction: column; gap: .5rem; }
.footer ul li a { font-size: .9rem; transition: color var(--transition); }
.footer ul li a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding-top: 1.5rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem;
  font-size: .82rem;
}

/* ── Mobile nav ─────────────────────────────────────────────── */
@media(max-width:860px){
  .nav-burger { display: flex; }
  .nav-menu {
    display: none; flex-direction: column; align-items: stretch;
    position: fixed; top: 0; right: 0; bottom: 0; width: min(320px, 85vw);
    background: var(--dark-2); padding: 5rem 1.5rem 2rem;
    box-shadow: -4px 0 30px rgba(0,0,0,.4); z-index: 999;
    gap: .25rem; overflow-y: auto;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: .75rem 1rem; border-radius: var(--radius-sm); font-size: 1rem; }
  .nav-menu .btn { margin: .5rem 0 0; width: 100%; justify-content: center; }
  .lang-toggle { margin: .5rem 0 0; align-self: flex-start; }
  .nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 998; }
  .nav-overlay.open { display: block; }
}

/* ── Scroll top ─────────────────────────────────────────────── */
.scroll-top {
  position: fixed; bottom: 1.75rem; right: 1.75rem; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: var(--white); border: none;
  font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(0,191,165,.4);
  opacity: 0; transform: translateY(12px);
  transition: all var(--transition); pointer-events: none;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.scroll-top:hover { background: var(--accent-dk); }

/* ── Seguridad & Confianza ───────────────────────────────────── */
.section-security {
  background: linear-gradient(160deg, var(--primary) 0%, #0D2B5E 50%, var(--dark-2) 100%);
  color: var(--white);
}
.section-security .section-header h2 { color: var(--white); }
.section-security .section-header p   { color: rgba(255,255,255,.75); }

.security-grid {
  display: grid; grid-template-columns: 1fr; gap: 1.5rem;
  margin-bottom: 3rem;
}
@media(min-width:640px)  { .security-grid { grid-template-columns: repeat(2,1fr); } }
@media(min-width:1024px) { .security-grid { grid-template-columns: repeat(3,1fr); } }

.security-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(0,191,165,.25);
  border-radius: var(--radius); padding: 2rem;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.security-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.security-card:hover { background: rgba(0,191,165,.1); transform: translateY(-4px); }
.security-card:hover::after { opacity: 1; }

.security-icon {
  width: 56px; height: 56px;
  background: rgba(0,191,165,.15); border: 1px solid rgba(0,191,165,.3);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: 1.25rem;
}
.security-card h3 { color: var(--white); font-size: 1.1rem; font-weight: 700; margin-bottom: .7rem; }
.security-card p  { color: rgba(255,255,255,.65); font-size: .93rem; line-height: 1.75; }

.trust-badges {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem;
  padding-top: 1rem;
}
.trust-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.07); border: 1px solid rgba(0,191,165,.3);
  border-radius: 99px; padding: .55rem 1.25rem;
  font-size: .88rem; font-weight: 500; color: rgba(255,255,255,.85);
  transition: all var(--transition);
}
.trust-badge:hover { background: rgba(0,191,165,.15); border-color: var(--accent); color: var(--white); }

/* ── Animations ─────────────────────────────────────────────── */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: none; }