/* =========================================================
   Physis SAS — Maqueta web
   Paleta extraída de la identidad de marca (presentación PDF)
   ========================================================= */

:root {
  --purple: #682d71;
  --purple-dark: #4c2054;
  --purple-light: #8a4a94;
  --green: #9bc95e;
  --green-dark: #7fae42;
  --gray: #a6a6a6;
  --gray-light: #f4f3f5;
  --ink: #2b2530;
  --ink-soft: #5c5563;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(76, 32, 84, 0.12);
  --shadow-sm: 0 4px 14px rgba(76, 32, 84, 0.10);
  --maxw: 1160px;
  --font-head: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Open Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--purple-dark);
  margin: 0 0 0.5em;
  line-height: 1.25;
}

p { margin: 0 0 1em; }

a { color: var(--purple); text-decoration: none; }
a:hover { color: var(--green-dark); }

img { max-width: 100%; display: block; }

ul { padding-left: 1.1em; }
li { margin-bottom: 0.5em; }

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

.section {
  padding: 72px 0;
}

.section-alt {
  background: var(--gray-light);
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
  font-size: 2rem;
}

.section-kicker {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--green-dark);
  margin-bottom: 10px;
}

.section-sub {
  text-align: justify;
  line-height: 1.2;
  max-width: 720px;
  margin: 0 auto 44px;
  color: var(--ink-soft);
}

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 30px;
  font-weight: 600;
  font-family: var(--font-head);
  font-size: 0.95rem;
  border: 2px solid var(--purple);
  background: var(--purple);
  color: var(--white);
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn:hover { background: var(--purple-dark); border-color: var(--purple-dark); color: var(--white); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--purple-dark); }

.btn-green {
  background: var(--green);
  border-color: var(--green);
  color: var(--purple-dark);
}
.btn-green:hover { background: var(--green-dark); border-color: var(--green-dark); color: var(--white); }

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 14px rgba(43,37,48,0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 42px; width: auto; }

.main-nav ul {
  display: flex;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--purple);
  border-bottom-color: var(--green);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 26px;
  height: 3px;
  background: var(--purple-dark);
  border-radius: 2px;
}

/* ============ HERO (diagonal, estilo presentación) ============ */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--purple);
  color: var(--white);
  min-height: 440px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--purple) 45%, var(--gray) 55%, var(--gray) 62%, transparent 62%);
  opacity: 0.9;
}

.hero::after {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 45%;
  background: var(--green);
  clip-path: polygon(100% 0, 100% 100%, 30% 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  padding: 90px 0 70px;
}

.hero-inner.small { padding: 60px 0; }

.hero h1 {
  color: var(--white);
  font-size: 2.6rem;
  max-width: 640px;
}

.hero p.lead {
  font-style: italic;
  font-size: 1.15rem;
  max-width: 560px;
  color: #ece3ee;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 14px;
}

.breadcrumb {
  position: relative;
  z-index: 2;
  font-size: 0.85rem;
  color: #e7dce9;
}
.breadcrumb a { color: #e7dce9; text-decoration: underline; }

/* ============ CARDS / GRIDS ============ */
.grid {
  display: grid;
  gap: 28px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 30px 26px;
  border-top: 4px solid var(--green);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }

.card .icon {
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
  color: var(--purple);
}

.card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.card p { color: var(--ink-soft); font-size: 0.94rem; margin-bottom: 0; }

/* Listado de servicios detallado */
.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.service-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid #eae5ec;
}
.service-list li:last-child { border-bottom: none; }
.service-list .dot {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  margin-top: 7px;
}

/* ============ CLIENTES ============ */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  align-items: center;
}
.client-logo {
  background: var(--white);
  border: 1px solid #e7e2e9;
  border-radius: var(--radius);
  padding: 18px 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 90px;
  filter: grayscale(45%);
  opacity: 0.85;
  transition: all 0.2s ease;
}
.client-logo:hover { filter: none; opacity: 1; box-shadow: var(--shadow-sm); }
.client-logo img { max-height: 46px; width: auto; }

/* ============ TIMELINE / COMPARATIVA ============ */
.compare {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.compare figure { margin: 0; }
.compare img { border-radius: 8px; box-shadow: var(--shadow-sm); }
.compare figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 8px;
}
.compare-label {
  grid-column: 1 / -1;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--purple);
  border: 2px solid var(--green);
  border-radius: 30px;
  padding: 6px 20px;
  width: fit-content;
  margin: 6px auto 4px;
}

/* ============ GALERÍA ============ */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--white);
}
.gallery img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery figure:hover img { transform: scale(1.06); }
.gallery figcaption {
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  font-weight: 600;
}

/* Especies endémicas */
.species-block { margin-bottom: 46px; }
.species-block h3 {
  font-style: italic;
  border-left: 4px solid var(--green);
  padding-left: 12px;
  margin-bottom: 18px;
}
.species-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.species-photos img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  height: 230px;
  width: 100%;
  object-fit: cover;
}

/* ============ FRANJA CERTIFICACIONES ============ */
.cert-block {
  display: flex;
  gap: 16px;
  margin-bottom: 30px;
}
.cert-block .arrow {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: var(--purple);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-top: 2px;
}
.cert-block:nth-child(even) .arrow { background: var(--green-dark); }
.cert-block h4 { font-style: italic; margin-bottom: 8px; }
.cert-block ul { margin: 0; padding-left: 1.2em; color: var(--ink-soft); }

.cert-photo-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
  align-items: center;
}
.cert-photo-grid .photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.cert-photo-grid img { border-radius: var(--radius); box-shadow: var(--shadow-sm); }

.badge-callout {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  text-align: center;
  font-weight: 700;
  color: var(--purple-dark);
  border: 1px dashed var(--green-dark);
  margin-top: 36px;
}

/* ============ CONTACTO ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  border-left: 4px solid var(--purple);
  margin-bottom: 20px;
}
.contact-card h3 { margin-bottom: 4px; }
.contact-card .role { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 12px; }
.contact-card a { display: block; margin-bottom: 4px; font-weight: 600; }

.contact-form {
  display: grid;
  gap: 14px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd6e0;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.contact-form label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-bottom: -8px;
  display: block;
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.form-note {
  font-size: 0.8rem;
  color: var(--gray);
  margin-top: -6px;
}

/* ============ CTA ============ */
.cta {
  background: linear-gradient(120deg, var(--purple) 0%, var(--purple-dark) 100%);
  color: var(--white);
  text-align: center;
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: "";
  position: absolute;
  bottom: -40px; left: -40px;
  width: 220px; height: 220px;
  background: var(--green);
  opacity: 0.18;
  border-radius: 50%;
}
.cta h2 { color: var(--white); }
.cta p { color: #ece3ee; max-width: 560px; margin: 0 auto 26px; }

/* ============ FOOTER ============ */
.site-footer {
  background: var(--purple-dark);
  color: #e8dfea;
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-grid h4 {
  color: var(--white);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer-brand img { height: 100px; margin-bottom: 10px; padding: 0px 0px; border-radius: 8px; }
.footer-brand p { color: #cbb9d0; font-size: 0.9rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid a { color: #e8dfea; }
.footer-grid a:hover { color: var(--green); }
.footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 0.82rem;
  color: #baa5c0;
}
.footer-social a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ============ UTILIDADES ============ */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.two-col img { border-radius: var(--radius); box-shadow: var(--shadow); }
.tag {
  display: inline-block;
  background: var(--gray-light);
  color: var(--purple);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .compare { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .cert-photo-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .main-nav { position: fixed; top: 82px; left: 0; right: 0; background: var(--white);
    box-shadow: 0 12px 20px rgba(0,0,0,0.08); transform: translateY(-140%);
    transition: transform 0.25s ease; }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; gap: 0; padding: 10px 24px 20px; }
  .main-nav a { display: block; padding: 12px 0; border-bottom: 1px solid #eee; }
  .nav-toggle { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .compare { grid-template-columns: repeat(2, 1fr); }
  .species-photos { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
  .section { padding: 50px 0; }
}