/* ============================================================
   INVERSIONES & PROYECTOS SAN RAFAEL S.A.C. — hoja de estilos
   ============================================================ */

:root {
  /* Paleta "constructora" */
  --color-bg: #f4f2ee;
  --color-surface: #ffffff;
  --color-surface-alt: #eceae4;
  --color-text: #23262b;
  --color-text-soft: #565c66;
  --color-navy: #0b2545;
  --color-navy-dark: #071a33;
  --color-concrete: #8d99a6;
  --color-concrete-light: #cbd2d9;
  --color-accent: #f4a300;
  --color-accent-dark: #c97f00;
  --color-status-ongoing: #e4572e;
  --color-status-done: #2f9e44;
  --color-border: #dcd8d0;

  --font-heading: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(11, 37, 69, 0.08);
  --shadow-md: 0 8px 24px rgba(11, 37, 69, 0.12);
  --shadow-lg: 0 16px 40px rgba(11, 37, 69, 0.18);

  --transition-base: 220ms ease;
  --header-height: 72px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  margin: 0 0 0.5em;
  line-height: 1.2;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: 104px 0 96px;
}

.section-alt {
  background: var(--color-surface-alt);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: 12px;
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head p {
  color: var(--color-text-soft);
}

.section-head--prose {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.section-head--prose p {
  text-align: left;
  font-size: 1.02rem;
  line-height: 1.8;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(244, 242, 238, 0.9);
  backdrop-filter: blur(8px);
  z-index: 100;
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-navy);
  font-size: 1.05rem;
}

.brand img {
  height: 56px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-navy);
  cursor: pointer;
  padding: 8px;
}

.main-nav ul {
  display: flex;
  gap: 28px;
}

.main-nav a {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-navy);
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-base);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-accent-dark);
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  width: 100%;
}


/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(180deg, rgba(7, 26, 51, 0.78), rgba(7, 26, 51, 0.92)), url("../img/hero-carretera-oyon.jpg");
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.hero .container {
  display: grid;
  gap: 20px;
  max-width: 900px;
  padding-block: 56px 104px;
}

.hero .eyebrow {
  color: var(--color-accent);
}

.hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.hero p {
  font-size: 1.1rem;
  color: #dfe4ea;
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 32px;
  margin-top: 40px;
}

.hero-stats strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-accent);
}

.hero-stats span {
  font-size: 0.85rem;
  color: var(--color-concrete-light);
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  opacity: 0.8;
  font-size: 1.4rem;
  animation: bounce 2.2s infinite;
  pointer-events: none;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-navy-dark);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* ---------- Servicios ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--color-navy);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.1rem;
}

.service-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- Proyectos ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-navy);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms ease;
}

.project-card:hover .project-media img {
  transform: scale(1.08);
}

.project-status {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #fff;
  z-index: 2;
}

.project-status.ongoing {
  background: var(--color-status-ongoing);
}

.project-status.done {
  background: var(--color-status-done);
}

.project-body {
  padding: 22px 24px 26px;
  color: #fff;
}

.project-body h3 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.project-client {
  display: block;
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-body p {
  color: var(--color-concrete-light);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Equipo ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.team-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--color-navy);
  color: var(--color-accent);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}

.team-card h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.team-role {
  display: block;
  color: var(--color-accent-dark);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}

.team-card p {
  color: var(--color-text-soft);
  font-size: 0.88rem;
  margin: 0;
}

/* ---------- Clientes ---------- */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  align-items: center;
}

.client-logo {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 18px;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  filter: grayscale(45%);
}

.client-logo:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  filter: grayscale(0%);
}

.client-logo img {
  max-height: 56px;
  width: auto;
  margin: 0 auto;
}

/* ---------- Certificaciones ---------- */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.cert-media {
  display: block;
  padding: 16px 16px 0;
  background: var(--color-surface);
}

.cert-media img {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.cert-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 18px 20px 22px;
}

.cert-norm {
  color: var(--color-accent-dark);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.cert-body h3 {
  font-size: 1.05rem;
}

.cert-body p {
  color: var(--color-text-soft);
  font-size: 0.85rem;
  margin: 0 0 16px;
}

.cert-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-navy);
  transition: color var(--transition-base);
}

.cert-link:hover,
.cert-link:focus-visible {
  color: var(--color-accent-dark);
}

/* ---------- Contacto ---------- */
.contact-section {
  background: var(--color-navy);
  color: #fff;
}

.contact-section .section-head p {
  color: var(--color-concrete-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.contact-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform var(--transition-base), background var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.1);
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-navy-dark);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  margin-bottom: 18px;
}

.contact-card h3 {
  color: #fff;
  font-size: 1rem;
}

.contact-card a,
.contact-card p {
  color: var(--color-concrete-light);
  font-size: 0.95rem;
}

.contact-card a {
  display: inline-block;
  max-width: 100%;
  margin-top: 4px;
  font-weight: 600;
  overflow-wrap: anywhere;
  word-break: break-word;
  transition: color var(--transition-base);
}

.contact-card a:hover,
.contact-card a:focus-visible {
  color: var(--color-accent);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-dark);
  color: var(--color-concrete-light);
  padding: 32px 0;
  font-size: 0.85rem;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

/* ---------- Reveal-on-scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms ease, transform 700ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms ease, transform 600ms ease;
}

[data-reveal-stagger] > *.is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-stagger] > *:nth-child(1).is-visible { transition-delay: 0ms; }
[data-reveal-stagger] > *:nth-child(2).is-visible { transition-delay: 80ms; }
[data-reveal-stagger] > *:nth-child(3).is-visible { transition-delay: 160ms; }
[data-reveal-stagger] > *:nth-child(4).is-visible { transition-delay: 240ms; }
[data-reveal-stagger] > *:nth-child(5).is-visible { transition-delay: 320ms; }
[data-reveal-stagger] > *:nth-child(6).is-visible { transition-delay: 400ms; }
[data-reveal-stagger] > *:nth-child(n+7).is-visible { transition-delay: 480ms; }

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal],
  [data-reveal-stagger] > *,
  .scroll-cue,
  .project-card:hover .project-media img {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    padding: 12px 24px 24px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 12px 4px;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 64px 0;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
}