/* ===== Adastra Ingeniería ===== */
:root {
  --navy: #1f2c50;
  --navy-dark: #15203d;
  --red: #a62b32;
  --ink: #222733;
  --gray: #5c6470;
  --line: #e4e7ec;
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --max: 1120px;
  --radius: 12px;
  --font-head: "Barlow Condensed", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; color: var(--navy); }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); font-weight: 700; text-transform: uppercase; margin-bottom: 32px; }
h3 { font-size: 1.25rem; font-weight: 600; }

.accent { color: var(--red); }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  background: var(--red);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: 8px;
  transition: background 0.2s, transform 0.2s;
}
.btn:hover { background: #8c2229; transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.7);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn-small { padding: 9px 20px; font-size: 0.85rem; }

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand-logo { height: 40px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink);
  transition: color 0.2s;
}
.nav-links a:not(.btn):hover { color: var(--red); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--navy);
  cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  color: #fff;
  margin-top: 68px;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(110deg, rgba(21, 32, 61, 0.93) 30%, rgba(21, 32, 61, 0.65) 70%, rgba(21, 32, 61, 0.45));
}
.hero-content { position: relative; max-width: 760px; padding-top: 60px; padding-bottom: 60px; }
.hero-content h1 { color: #fff; margin: 14px 0 20px; }
.hero-kicker {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 1rem;
  color: #e8b7ba;
}
.hero-sub {
  font-size: 1.08rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Stats ===== */
.stats { background: var(--navy); color: #fff; padding: 40px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
}
.stat-label { font-size: 0.88rem; color: rgba(255, 255, 255, 0.75); }

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-kicker {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 600;
  color: var(--red);
  margin-bottom: 8px;
}
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  color: var(--gray);
  font-size: 1.02rem;
}

/* ===== Service cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(31, 44, 80, 0.1); }
.card-icon { font-size: 1.8rem; margin-bottom: 14px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--gray); font-size: 0.94rem; }

/* ===== Projects ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.project {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.project:hover { transform: translateY(-4px); box-shadow: 0 14px 36px rgba(31, 44, 80, 0.12); }
.project img { height: 200px; width: 100%; object-fit: cover; }
.project-body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project-body h3 { font-size: 1.15rem; }
.project-body p { color: var(--gray); font-size: 0.92rem; flex: 1; }
.project-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-meta li {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--navy);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ===== Clients ===== */
.clients {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.clients-note {
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--gray);
}
.clients span {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--navy);
  background: #fff;
  border: 1px solid var(--line);
  padding: 12px 22px;
  border-radius: 8px;
}

/* ===== Contact ===== */
.contact-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}
.contact-form {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
}
.contact-form .optional { font-weight: 400; color: var(--gray); }
.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(31, 44, 80, 0.12);
}
.contact-form textarea { resize: vertical; }
.contact-form .btn { align-self: flex-start; border: none; cursor: pointer; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.contact-item {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 26px;
}
.contact-item h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--red);
  margin-bottom: 8px;
}
.contact-item p, .contact-item a { color: var(--ink); font-size: 0.98rem; }
.contact-item a:hover { color: var(--red); }

/* ===== Footer ===== */
.footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 28px 0;
  font-size: 0.85rem;
}
.footer-inner { text-align: center; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .cards-grid, .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 20px 24px;
    align-items: flex-start;
  }
  .nav-links.open { display: flex; }
}
@media (max-width: 620px) {
  .cards-grid, .projects-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { min-height: 80vh; }
}