/* Base */
:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #101828;
  --muted: #475467;
  --primary: #2d6a4f;
  --primary-700: #1b4332;
  --accent: #40916c;
  --border: #e5e7eb;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute; left: -999px; top: -999px;
}
.skip-link:focus {
  left: 1rem; top: 1rem; z-index: 1000;
  background: var(--primary);
  color: #061018;
  padding: .5rem .75rem; border-radius: .5rem;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-content { display: flex; align-items: center; justify-content: space-between; padding: .75rem 0; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: .2px; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; border-radius: .6rem; background: linear-gradient(135deg, var(--primary), #52b788); color: #ffffff; font-weight: 800; }
.brand-name { font-size: 1.05rem; }

.site-nav > ul { list-style: none; display: flex; gap: 1rem; margin: 0; padding: 0; align-items: center; }
.site-nav a { padding: .5rem .6rem; border-radius: .5rem; color: var(--muted); }
.site-nav a:hover { color: var(--text); background: rgba(45, 106, 79, .08); }

/* Dropdown menu */
.site-nav li.has-dropdown { position: relative; }
.site-nav .nav-parent { background: transparent; border: 0; color: var(--muted); padding: .5rem .6rem; border-radius: .5rem; cursor: pointer; font: inherit; display: inline-flex; align-items: center; gap: .4rem; }
.site-nav .nav-parent:hover { color: var(--text); background: rgba(45,106,79,.08); }
.site-nav .nav-parent::after { content: "▾"; font-size: .85em; color: currentColor; transition: transform .15s ease; }
.site-nav li.has-dropdown.open > .nav-parent::after { transform: rotateX(180deg); }
.site-nav .dropdown { list-style: none; position: absolute; top: calc(100% + 8px); left: 0; right: auto; background: var(--surface); border: 1px solid var(--border); border-radius: .6rem; box-shadow: var(--shadow); padding: .4rem; min-width: 220px; opacity: 0; transform: translateY(6px); transform-origin: top left; pointer-events: none; transition: opacity .15s ease, transform .15s ease; display: block; z-index: 20; }
.site-nav .dropdown li { display: block; }
.site-nav .dropdown a { display: block; padding: .55rem .6rem; border-radius: .5rem; color: var(--muted); }
.site-nav .dropdown a:hover { color: var(--text); background: rgba(45,106,79,.08); }
.site-nav li.has-dropdown:hover > .dropdown,
.site-nav li.has-dropdown:focus-within > .dropdown { opacity: 1; transform: translateY(0); pointer-events: auto; }

.btn { display: inline-block; padding: .7rem 1rem; border-radius: .7rem; background: var(--primary); color: #ffffff; font-weight: 700; box-shadow: var(--shadow); border: 1px solid transparent; }
.btn:hover { background: #276649; }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: .5rem .75rem; font-size: .92rem; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn-ghost:hover { background: rgba(45, 106, 79, .08); }
.btn-light { background: #eaf7f1; color: #0f3d2e; }
.btn-light:hover { background: #e2f3eb; }

/* Blue button variant (solo para Reservar evaluación) */
.btn-blue { background: #1d4ed8; }
.btn-blue:hover { background: #1e40af; }

.nav-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--border); background: transparent; border-radius: .6rem; color: var(--text); }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px auto; border-radius: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Hero */
.hero { padding: 4rem 0 2rem; }
.grid-2 { display: grid; grid-template-columns: 1.1fr .9fr; gap: 2rem; align-items: center; }
.hero h1 { font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1.2; margin: 0 0 1rem; }
.hero p { color: var(--muted); margin: 0 0 1.25rem; }
.hero-cta { display: flex; gap: .75rem; flex-wrap: wrap; }
.hero-media img { width: 100%; height: 420px; object-fit: cover; border-radius: 1rem; box-shadow: var(--shadow); border: 1px solid var(--border); }

/* Sections */
.section { padding: 3.5rem 0; }
.section.alt { background: #f8fafc; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { font-size: 1.6rem; margin: 0 0 1.5rem; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; overflow: hidden; box-shadow: var(--shadow); }
.card img { width: 100%; height: 180px; object-fit: cover; }
.card-body { padding: 1rem; }
.card h3 { margin: 0 0 .5rem; font-size: 1.2rem; }
.card p { margin: 0 0 .75rem; color: var(--muted); }
.card-link { color: var(--primary); }
.card-link:hover { text-decoration: underline; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1rem; box-shadow: var(--shadow); }
.step-number { width: 36px; height: 36px; display: grid; place-items: center; background: linear-gradient(135deg, #52b788, #95d5b2); color: #0b3d2e; border-radius: .6rem; font-weight: 800; margin-bottom: .5rem; }
.step h3 { margin: 0 0 .25rem; font-size: 1.05rem; }
.step p { margin: 0; color: var(--muted); }

/* CTA */
.cta { background: radial-gradient(80% 120% at 10% 10%, rgba(45,106,79,.08), transparent 50%), radial-gradient(80% 120% at 90% 30%, rgba(45,106,79,.06), transparent 50%); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.center { align-items: center; }
.cta-actions { text-align: right; }

/* Nosotros */
#nosotros img { width: 100%; height: 360px; object-fit: cover; border-radius: 1rem; border: 1px solid var(--border); box-shadow: var(--shadow); }

/* Clientes */
.logo-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.logo { height: 64px; display: grid; place-items: center; border-radius: .75rem; background: var(--surface); border: 1px dashed var(--border); color: var(--muted); }

/* Forms */
.form { padding: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.form-field { display: grid; gap: .4rem; }
.form-field label { font-weight: 600; }
.form-field input, .form-field textarea {
  width: 100%;
  padding: .7rem .8rem;
  border-radius: .7rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
}
.form-field input:focus, .form-field textarea:focus { outline: 2px solid rgba(78,168,222,.4); border-color: rgba(78,168,222,.6); }
.form-actions { margin-top: .5rem; }
.form-success { margin-top: .75rem; color: #9df2be; }

.newsletter-form { display: grid; grid-template-columns: 1fr auto; gap: .5rem; align-items: center; }
.newsletter-form input { padding: .7rem .8rem; border-radius: .7rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.newsletter-form .newsletter-success { color: #9df2be; margin-left: .75rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 1.25rem 0; background: #f9fafb; }
.footer-content { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.site-footer nav a { color: var(--muted); margin-left: .75rem; }
.site-footer nav a:hover { color: var(--text); }

/* Utilities */
.grid-2.center { display: grid; grid-template-columns: 1fr auto; gap: 2rem; }
.contact-meta a { color: var(--primary); }
.social { list-style: none; padding: 0; margin: .5rem 0 0; display: flex; gap: .75rem; }
.card.form { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; box-shadow: var(--shadow); }

/* WhatsApp FAB */
.whatsapp-fab { position: fixed; right: 18px; bottom: 18px; z-index: 60; }
.whatsapp-fab a { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: #25D366; color: #052313; box-shadow: 0 10px 20px rgba(0,0,0,.35), 0 2px 6px rgba(0,0,0,.2); border: 1px solid rgba(0,0,0,.15); }
.whatsapp-fab a:hover { filter: brightness(1.05); }
.whatsapp-fab svg { width: 28px; height: 28px; fill: currentColor; }

/* Responsive */
@media (max-width: 960px) {
  .grid-2, .grid-2.center { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  .hero-media img { height: 280px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-actions { text-align: left; }
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .site-nav { position: absolute; left: 0; right: 0; top: 100%; background: rgba(255,255,255,.98); border-bottom: 1px solid var(--border); transform-origin: top; transform: scaleY(0); transition: transform .2s ease; }
  .site-nav.open { transform: scaleY(1); }
  .site-nav > ul { flex-direction: column; align-items: stretch; padding: .75rem; }
  .site-nav a { padding: .9rem 1rem; border-radius: .6rem; }
  .site-nav .nav-parent { width: 100%; justify-content: space-between; padding: .9rem 1rem; }
  .site-nav .dropdown { position: static; opacity: 1; transform: none; pointer-events: auto; display: none; padding: .25rem 0 .25rem .75rem; border: 0; box-shadow: none; background: transparent; min-width: unset; }
  .site-nav li.has-dropdown.open > .dropdown { display: block; }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}