*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green: #2e7d32;
  --green-light: #43a047;
  --green-pale: #e8f5e9;
  --text: #333;
  --text-light: #666;
  --border: #ddd;
  --max-w: 860px;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: #fff;
}

/* Nav */
.main-nav {
  background: #fff;
  border-bottom: 2px solid var(--green);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 60px;
}
.brand {
  font-size: 1.4rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.5px;
}
.brand-green { color: var(--green); }
.site-version {
  font-size: .7rem;
  font-weight: 600;
  color: #fff;
  background: var(--green);
  padding: .15rem .45rem;
  border-radius: 4px;
  letter-spacing: .03em;
  margin-left: .4rem;
  vertical-align: middle;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
  margin-left: auto;
}
.nav-links li a {
  display: block;
  padding: .4rem .75rem;
  text-decoration: none;
  color: var(--text-light);
  font-size: .9rem;
  border-radius: 4px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav-links li a:hover,
.nav-links li a.active { color: var(--green); background: var(--green-pale); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  margin-left: auto;
}

/* Layout */
.page-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-light) 100%);
  color: #fff;
  padding: 4rem 1.5rem;
  text-align: center;
}
.hero h1 { font-size: 2.4rem; margin-bottom: .5rem; }
.hero p { font-size: 1.15rem; opacity: .9; }

/* Headings */
h1 { font-size: 2rem; color: var(--green); margin-bottom: 1rem; }
h2 { font-size: 1.5rem; color: var(--green); margin: 2rem 0 .75rem; }
h3 { font-size: 1.2rem; color: var(--green-light); margin: 1.5rem 0 .5rem; }

/* Content */
p { margin-bottom: 1rem; }
a { color: var(--green); }
a:hover { color: var(--green-light); }
img { max-width: 100%; height: auto; border-radius: 4px; margin: .5rem 0; }
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: .25rem; }
strong { font-weight: 600; }
em { font-style: italic; }
blockquote {
  border-left: 4px solid var(--green);
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: var(--text-light);
  font-style: italic;
}

/* Post grid */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.post-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow .2s, transform .2s;
  display: block;
}
.post-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); transform: translateY(-2px); }
.post-card h2 {
  font-size: 1rem;
  color: var(--green);
  margin: 0 0 .5rem;
}
.post-card p { font-size: .875rem; color: var(--text-light); margin: 0; }

/* Page title */
.page-title {
  font-size: 2rem;
  color: var(--green);
  margin-bottom: 1.5rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--green-pale);
}

/* Post content */
.post-content { max-width: 720px; }
.post-content img { display: block; margin: 1.5rem auto; }

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--text-light);
  text-decoration: none;
  font-size: .875rem;
  margin-bottom: 1.5rem;
}
.back-link:hover { color: var(--green); }

/* Footer */
footer {
  background: var(--green);
  color: rgba(255,255,255,.85);
  text-align: center;
  padding: 1.5rem;
  font-size: .875rem;
  margin-top: 4rem;
}
footer a { color: #fff; }

/* ── Portfolio client logos ─────────────────────────────────── */
.client-logo {
  margin: .75rem 0 1.25rem;
  display: inline-block;
}
.guiago-logo {
  font-family: 'Arial Black', 'Arial Bold', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -1px;
}
.guiago-text { color: #000; }
.guiago-go   { color: #009ddc; }

/* ── Home hero ──────────────────────────────────────────────── */
.hero-home {
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}
.hero-inner { max-width: 700px; margin: 0 auto; }
.hero-label {
  font-size: .85rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
  margin-bottom: .75rem;
}
.hero h1 { font-size: 3rem; margin-bottom: .75rem; color: #fff; }
.hero-brand-light { color: #a5d6a7; }
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.88);
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn-hero-primary {
  background: #fff;
  color: var(--green);
  font-weight: 700;
  padding: .8rem 1.8rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 1rem;
  transition: background .2s, transform .15s;
}
.btn-hero-primary:hover { background: #e8f5e9; transform: translateY(-2px); color: var(--green); }
.btn-hero-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.6);
  font-weight: 600;
  padding: .75rem 1.6rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 1rem;
  transition: border-color .2s, background .2s;
}
.btn-hero-secondary:hover { border-color: #fff; background: rgba(255,255,255,.1); color: #fff; }

/* ── Value strip ─────────────────────────────────────────────── */
.value-strip {
  background: #f1f8e9;
  border-top: 1px solid #c8e6c9;
  border-bottom: 1px solid #c8e6c9;
  padding: 1rem 1.5rem;
}
.value-strip-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
}
.value-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .95rem;
  font-weight: 500;
  color: var(--green);
}
.value-icon { font-weight: 900; font-size: 1.1rem; }

/* ── Section headings ────────────────────────────────────────── */
.section-title {
  font-size: 1.8rem;
  color: var(--green);
  text-align: center;
  margin-bottom: .6rem;
}
.section-sub {
  text-align: center;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  font-size: 1rem;
}

#servicios { padding-bottom: 1.5rem; }

/* ── Services grid ───────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.service-card {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  background: #fff;
  transition: box-shadow .2s, transform .2s;
}
.service-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.09); transform: translateY(-3px); }
.service-card--highlight {
  border-color: var(--green-light);
  background: var(--green-pale);
}
.service-icon { font-size: 2rem; margin-bottom: .75rem; display: block; }
.service-card h3 { font-size: 1.1rem; color: var(--green); margin-bottom: .6rem; }
.service-card p { font-size: .9rem; color: var(--text-light); margin-bottom: .75rem; }
.service-card ul { padding-left: 1.1rem; }
.service-card ul li { font-size: .875rem; margin-bottom: .3rem; color: var(--text); }

/* ── Methodology ─────────────────────────────────────────────── */
.methodology-section {
  background: #f9fafb;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  margin-top: 0.75rem;
}
.method-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: .5rem;
  margin-top: 2rem;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
.method-step {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1rem;
  text-align: center;
  align-self: stretch;
}
.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green-pale);
  -webkit-text-stroke: 2px var(--green);
  line-height: 1;
  margin-bottom: .5rem;
}
.method-step h4 { font-size: 1rem; color: var(--green); margin-bottom: .4rem; }
.method-step p { font-size: .825rem; color: var(--text-light); }
.method-arrow {
  font-size: 1.5rem;
  color: var(--green-light);
  align-self: center;
  flex-shrink: 0;
}

/* ── CTA section ─────────────────────────────────────────────── */
.cta-section {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-light) 100%);
  padding: 4rem 1.5rem;
  text-align: center;
  margin-top: 4rem;
}
.cta-inner { max-width: 560px; margin: 0 auto; }
.cta-section h2 { font-size: 1.9rem; color: #fff; margin-bottom: .6rem; }
.cta-section p { color: rgba(255,255,255,.88); margin-bottom: 1.75rem; font-size: 1.05rem; }

/* ── Contact form ───────────────────────────────────────────── */
.contact-intro {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}
.contact-wrap {
  max-width: 560px;
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-weight: 600;
  font-size: .9rem;
  margin-bottom: .35rem;
  color: var(--text);
}
.req { color: var(--green); }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: .65rem .9rem;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: #fafafa;
  transition: border-color .2s, box-shadow .2s;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-light);
  box-shadow: 0 0 0 3px rgba(67,160,71,.15);
  background: #fff;
}
.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #e53935;
  box-shadow: 0 0 0 3px rgba(229,57,53,.1);
}
.h-captcha { margin-top: .25rem; }
.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--green);
  color: #fff;
  border: none;
  padding: .75rem 2rem;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s;
  margin-top: .5rem;
}
.btn-submit:hover:not(:disabled) { background: var(--green-light); transform: translateY(-1px); }
.btn-submit:disabled { opacity: .65; cursor: not-allowed; }
.hidden-honeypot { display: none !important; }
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: #1a1a1a;
  color: #fff;
  padding: .65rem 1.4rem;
  border-radius: 2rem;
  font-size: .95rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 9999;
}
.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.form-feedback {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: 8px;
  margin-top: 1.5rem;
}
.form-feedback svg { width: 28px; height: 28px; flex-shrink: 0; margin-top: 2px; }
.form-feedback.success { background: var(--green-pale); color: var(--green); }
.form-feedback.error { background: #ffebee; color: #c62828; }
.form-feedback p { margin: .2rem 0 0; font-size: .9rem; }
.form-feedback a { color: inherit; }

/* ── Portfolio screenshots ──────────────────────────────────── */
.portfolio-screenshots {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}
.portfolio-screenshots figure {
  flex: 1 1 280px;
  margin: 0;
}
.portfolio-screenshots img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  margin: 0;
}
.portfolio-screenshots figcaption {
  font-size: .8rem;
  color: var(--text-light);
  text-align: center;
  margin-top: .4rem;
}

/* ── Demo link button ─────────────────────────────────────────── */
.demo-link {
  display: inline-block;
  margin: 1rem 0 1.5rem;
  padding: .6rem 1.25rem;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  border-radius: 4px;
  text-decoration: none;
  transition: opacity .15s;
}
.demo-link:hover { opacity: .85; color: #fff; }

/* ── Project logo wrapper — uniform height for all client logos ── */
.project-logo-wrap {
  height: 80px;
  display: flex;
  align-items: center;
  margin: 1rem 0 1.5rem;
}
.project-logo-wrap img {
  max-height: 80px;
  max-width: 240px;
  width: auto;
  height: auto;
  object-fit: contain;
  margin: 0;
  border-radius: 0;
}
.project-logo-wrap .guiago-logo,
.project-logo-wrap .client-logo {
  margin: 0;
  font-size: 2.1rem;
}

/* Responsive */
@media (max-width: 600px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: #fff; border-bottom: 2px solid var(--green); padding: 1rem; }
  .nav-links.open { display: flex; }
  .hero h1 { font-size: 2rem; }
  h1 { font-size: 1.5rem; }
  .hero-sub { font-size: 1rem; }
  .method-steps { grid-template-columns: 1fr; }
  .method-arrow { transform: rotate(90deg); justify-self: center; }
  .method-step { max-width: 300px; width: 100%; justify-self: center; }
  .services-grid { grid-template-columns: 1fr; }
}