/* ─────────────────────────────────────────────────────────────────────────────
   HASI Mining Services — Design System
   Professional Corporate Edition
───────────────────────────────────────────────────────────────────────────── */

:root {
  --color-ink:       #0c2830;
  --color-ink-soft:  #3a5560;
  --color-ink-muted: #6a8892;
  --color-teal:      #0d8a83;
  --color-teal-dark: #0a6e68;
  --color-green:     #5d9e6b;
  --color-sand:      #eef1ee;
  --color-white:     #ffffff;
  --color-dark:      #091a20;
  --color-dark-mid:  #0e2530;
  --color-line:      rgba(12, 40, 48, 0.10);
  --shadow-sm:  0 2px 10px rgba(6, 20, 26, 0.07);
  --shadow-md:  0 8px 32px rgba(6, 20, 26, 0.10);
  --shadow-lg:  0 20px 56px rgba(6, 20, 26, 0.15);
  --radius-sm:  10px;
  --radius-md:  18px;
  --radius-lg:  24px;
  --container:  1200px;
  --t-fast: 150ms ease;
  --t-base: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-ink);
  background: #f6f9f9;
  overflow-x: hidden;
}

img   { max-width: 100%; display: block; }
a     { color: inherit; text-decoration: none; }
p     { margin: 0; line-height: 1.72; }
main  { overflow: clip; }

.container {
  width: min(calc(100% - 2.5rem), var(--container));
  margin: 0 auto;
}

/* ── Typography ──────────────────────────────────────────────────────────── */
.eyebrow {
  margin: 0 0 0.875rem;
  font-family: "Barlow", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  color: var(--color-green);
}

h1, h2, h3, .footer-title {
  margin: 0;
  font-family: "Barlow", sans-serif;
  font-weight: 700;
  line-height: 1.06;
}

h1 {
  font-size: clamp(2.2rem, 4.6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.025em;
}

.hero-content h1 { max-width: 22ch; }

h2 {
  font-size: clamp(1.9rem, 3.5vw, 3.2rem);
  line-height: 1.07;
  letter-spacing: -0.018em;
  max-width: 14ch;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.005em;
}

/* ── Navigation ──────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  margin: 0;
  padding: 0;
  line-height: 0;        /* elimina cualquier espacio inline */
}

.nav-bar {
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(12, 40, 48, 0.07);
  line-height: normal;   /* restaura para el contenido del nav */
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 72px;
}

.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: clamp(72px, 8vw, 100px); height: auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.site-nav a {
  position: relative;
  padding: 0.45rem 0.8rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--color-ink-soft);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
}

.site-nav a:hover {
  color: var(--color-ink);
  background: rgba(12, 40, 48, 0.05);
}

.site-nav a.active {
  color: var(--color-teal);
  background: rgba(13, 138, 131, 0.07);
}

.site-nav a[href="/contact"] {
  margin-left: 0.625rem;
  padding: 0.45rem 1.1rem;
  background: var(--color-dark);
  color: var(--color-white) !important;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.site-nav a[href="/contact"]:hover,
.site-nav a[href="/contact"].active {
  background: var(--color-teal);
  color: var(--color-white) !important;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform 220ms ease, opacity 220ms ease;
  transform-origin: center;
}

/* Animación a X cuando está abierto */
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
}

.hero-home {
  overflow: hidden;
  background: linear-gradient(120deg, #091820 0%, #1a3540 55%, #4a6a62 100%);
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(9, 24, 32, 0.50);
}

.hero-media {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    rgba(9, 24, 32, 0.90) 0%,
    rgba(9, 24, 32, 0.60) 46%,
    rgba(9, 24, 32, 0.18) 82%
  );
}

.hero-sub {
  min-height: 52svh;
  background:
    linear-gradient(145deg, rgba(9, 24, 32, 0.94), rgba(13, 138, 131, 0.50)),
    linear-gradient(120deg, #091820 0%, #1a3540 55%, #4a6a62 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  padding: 8rem 0 6rem;
  color: var(--color-white);
  margin-left: max(1.25rem, calc((100% - var(--container)) / 2));
}

.hero-content.narrow { max-width: 860px; }

.hero-content .eyebrow {
  color: var(--color-green);
  opacity: 0.95;
}

.hero-text {
  max-width: 54ch;
  margin: 1.5rem 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1.07rem;
  line-height: 1.74;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2.5rem;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-top: 2rem;
}

.hero-highlights span {
  padding: 0.6rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.88rem;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 50px;
  padding: 0 1.75rem;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font-family: "Barlow", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition:
    transform var(--t-base),
    background-color var(--t-base),
    border-color var(--t-base),
    color var(--t-base),
    box-shadow var(--t-base);
}

.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  color: var(--color-white);
  background: var(--color-teal);
  box-shadow: 0 8px 24px rgba(13, 138, 131, 0.28);
}

.btn-primary:hover {
  background: var(--color-teal-dark);
  box-shadow: 0 12px 32px rgba(13, 138, 131, 0.38);
}

.btn-secondary {
  color: var(--color-white);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.26);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.46);
}

.btn-outline {
  color: var(--color-ink);
  background: transparent;
  border-color: rgba(12, 40, 48, 0.18);
}

.btn-outline:hover {
  background: rgba(13, 138, 131, 0.05);
  border-color: var(--color-teal);
  color: var(--color-teal);
}

/* ── Sections ────────────────────────────────────────────────────────────── */
.section { padding: 7rem 0; }

.section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-muted { background: #f1f5f4; }

.section-heading { margin-bottom: 3.5rem; }
.section-heading h2 { margin-top: 0.5rem; max-width: 33.333%; }

.section-intro {
  max-width: 54ch;
  margin-top: 1.25rem;
  line-height: 1.74;
  color: var(--color-ink-soft);
  font-size: 0.98rem;
}

/* ── Metrics (dark band) ─────────────────────────────────────────────────── */
.intro-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-card {
  padding: 2rem 1.5rem;
  background: transparent;
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  transition: background var(--t-base);
}

.metric-card:last-child { border-right: none; }

.metric-card:hover { background: rgba(255, 255, 255, 0.04); }

.metric-card strong {
  display: block;
  font-family: "Barlow", sans-serif;
  font-size: clamp(2.2rem, 3vw, 3rem);
  font-weight: 800;
  color: var(--color-green);
  line-height: 1;
  margin-bottom: 0.625rem;
  letter-spacing: -0.025em;
}

.metric-card span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.52);
  line-height: 1.55;
}

/* ── Card grids ──────────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.card-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid-four  { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ── Info cards ──────────────────────────────────────────────────────────── */
.info-card {
  padding: 2.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 138, 131, 0.14);
}

.info-card h3 { margin-bottom: 0.75rem; color: var(--color-ink); }
.info-card p  { font-size: 0.94rem; color: var(--color-ink-soft); line-height: 1.72; }

.info-card-icon { padding-top: 2rem; }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(13,138,131,0.09), rgba(93,158,107,0.06));
  border: 1px solid rgba(13,138,131,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-teal);
  transition: background var(--t-base), border-color var(--t-base);
}

.info-card-icon:hover .card-icon {
  background: linear-gradient(135deg, rgba(13,138,131,0.16), rgba(93,158,107,0.10));
  border-color: rgba(13,138,131,0.24);
}

/* ── Project cards ───────────────────────────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card {
  padding: 2rem;
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-teal);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project-location {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--color-teal);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.project-card h3 { margin-bottom: 0.75rem; }
.project-card p  { font-size: 0.92rem; color: var(--color-ink-soft); line-height: 1.7; }

.projects-cta { text-align: center; margin-top: 3rem; }

/* ── Content cards ───────────────────────────────────────────────────────── */
.content-card {
  padding: 2.5rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

/* ── Grids ───────────────────────────────────────────────────────────────── */
.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
}

.cta-shell {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
}

/* ── Detail list ─────────────────────────────────────────────────────────── */
.detail-list {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0 0;
  display: grid;
  gap: 0.875rem;
}

.detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.94rem;
  color: var(--color-ink-soft);
}

.detail-list li strong { color: var(--color-ink); flex-shrink: 0; }
.detail-icon { flex-shrink: 0; margin-top: 0.1rem; color: var(--color-teal); }

/* ── Photo strip ─────────────────────────────────────────────────────────── */
.section-photo-strip {
  position: relative;
  padding: 5rem 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(13,138,131,0.16) 0%, transparent 52%),
    linear-gradient(135deg, #091820 0%, #112a36 40%, #182f3a 100%);
  overflow: hidden;
}

.section-photo-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.photo-strip-overlay { display: none; }

.photo-strip-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  flex-wrap: wrap;
  gap: 2.5rem;
  color: var(--color-white);
}

.strip-stat { text-align: center; }

.strip-stat strong {
  display: block;
  font-family: "Barlow", sans-serif;
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.strip-stat span {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-green);
  font-weight: 600;
}

.strip-divider {
  width: 1px;
  height: 56px;
  background: rgba(255, 255, 255, 0.10);
  flex-shrink: 0;
}

/* ── MVP grid ────────────────────────────────────────────────────────────── */
.mvp-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(13,138,131,0.14);
  border: 1px solid rgba(13,138,131,0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-teal);
}

.mvp-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.mvp-card {
  padding: 2.25rem;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  transition: background var(--t-base), border-color var(--t-base);
}

.mvp-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.13);
}

.mvp-card p {
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.76;
  margin: 0.875rem 0 0;
  font-size: 0.94rem;
}

/* ── Value section ───────────────────────────────────────────────────────── */
.section-value {
  position: relative;
  padding: 8rem 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 85% 40%, rgba(13,138,131,0.11) 0%, transparent 55%),
    linear-gradient(135deg, #091820 0%, #102430 50%, #182e38 100%);
  color: var(--color-white);
}

.section-value::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px,
    transparent 1px, transparent 56px
  );
  pointer-events: none;
}

.value-content { position: relative; z-index: 1; max-width: 700px; }

.value-text {
  max-width: 56ch;
  margin: 1.25rem 0 2.5rem;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.66);
  font-size: 1rem;
}

.value-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  padding-top: 2.25rem;
  border-top: 1px solid rgba(255,255,255,0.09);
}

.value-stat strong {
  display: block;
  font-family: "Barlow", sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-green);
  line-height: 1;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.value-stat span {
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.40);
}

/* ── CTA strip ───────────────────────────────────────────────────────────── */
.cta-strip {
  background:
    linear-gradient(135deg, rgba(9,26,32,0.88) 0%, rgba(9,26,32,0.72) 100%),
    url('https://images.pexels.com/photos/18337612/pexels-photo-18337612.jpeg') center/cover no-repeat;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.cta-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 72% 50%, rgba(13,138,131,0.18), transparent 58%);
  pointer-events: none;
}

.cta-shell { position: relative; z-index: 1; }

.cta-strip h2 {
  max-width: 28ch;
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  color: var(--color-white);
}

.cta-strip .eyebrow { margin-bottom: 0.5rem; }

/* ── Services tabs ───────────────────────────────────────────────────────── */
.services-tabs {
  display: grid;
  grid-template-columns: 260px 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 3.5rem;
  border: 1px solid var(--color-line);
}

.tab-nav {
  display: flex;
  flex-direction: column;
  background: #0d2330;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.35rem 1.5rem;
  background: transparent;
  border: none;
  border-left: 3px solid transparent;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.44);
  text-align: left;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.tab-btn:last-child { border-bottom: none; }
.tab-btn:hover { background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.78); }

.tab-btn.is-active {
  background: rgba(13,138,131,0.14);
  border-left-color: var(--color-teal);
  color: #fff;
}

.tab-num {
  font-family: "Barlow", sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal);
  opacity: 0.7;
  flex-shrink: 0;
}

.tab-btn.is-active .tab-num { opacity: 1; }
.tab-label { font-size: 0.875rem; font-weight: 600; line-height: 1.3; flex: 1; }

.tab-arrow { flex-shrink: 0; opacity: 0; transition: opacity var(--t-fast); color: var(--color-teal); }
.tab-btn.is-active .tab-arrow,
.tab-btn:hover .tab-arrow { opacity: 1; }

.tab-panels { background: var(--color-white); min-height: 420px; overflow: hidden; }

.tab-panel { display: none; padding: 3rem; height: 100%; }
.tab-panel.is-active { display: block; animation: panel-in 0.26s ease; }

@keyframes panel-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.panel-header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--color-line);
}

.panel-icon {
  width: 50px;
  height: 50px;
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(13,138,131,0.09), rgba(93,158,107,0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-teal);
  flex-shrink: 0;
}

.panel-num {
  font-family: "Barlow", sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal);
  display: block;
  margin-bottom: 0.35rem;
}

.panel-title {
  font-family: "Barlow", sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 0.4rem;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.panel-text { font-size: 0.925rem; color: var(--color-ink-soft); line-height: 1.68; margin: 0; }

.panel-items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.6rem;
}

.panel-items li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  background: var(--color-sand);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
  transition: background var(--t-fast), color var(--t-fast);
}

.panel-items li:hover { background: rgba(13,138,131,0.08); color: var(--color-teal); }
.panel-items li svg { color: var(--color-teal); flex-shrink: 0; }

/* ── About intro ─────────────────────────────────────────────────────────── */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
  margin-bottom: 3.5rem;
}

.about-intro-left h2 {
  font-family: "Barlow", sans-serif;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  font-weight: 700;
  color: var(--color-ink);
  margin: 0.5rem 0 1.25rem;
  line-height: 1.16;
  letter-spacing: -0.015em;
}

.about-lead { font-size: 1rem; line-height: 1.76; color: var(--color-ink-soft); margin-bottom: 1.75rem; }

.about-quote {
  margin: 0;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--color-teal);
  background: linear-gradient(135deg, rgba(13,138,131,0.05), rgba(93,158,107,0.03));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.975rem;
  font-style: italic;
  color: var(--color-ink);
  line-height: 1.68;
}

.fact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.fact-tile {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.4rem 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}

.fact-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(13,138,131,0.14);
}

.fact-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(13,138,131,0.09), rgba(93,158,107,0.06));
  display: flex; align-items: center; justify-content: center;
  color: var(--color-teal); margin-bottom: 0.2rem;
}

.fact-tile strong {
  font-size: 0.70rem;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--color-teal);
}

.fact-tile span { font-size: 0.875rem; color: var(--color-ink-soft); line-height: 1.48; }

/* ── Accordion ───────────────────────────────────────────────────────────── */
.about-accordion {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
}

.accordion-item { border-bottom: 1px solid var(--color-line); }
.accordion-item:last-child { border-bottom: none; }

.accordion-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  background: var(--color-white);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background var(--t-fast);
}

.accordion-btn:hover { background: #f7fafa; }
.accordion-btn[aria-expanded="true"] { background: rgba(13,138,131,0.04); }

.accordion-num {
  font-family: "Barlow", sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-teal);
  flex-shrink: 0;
}

.accordion-label { flex: 1; font-size: 0.94rem; font-weight: 600; color: var(--color-ink); }
.accordion-icon { flex-shrink: 0; color: var(--color-ink-muted); transition: transform 0.22s ease; }
.accordion-btn[aria-expanded="true"] .accordion-icon { transform: rotate(180deg); }

.accordion-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.26s ease; }
.accordion-body.is-open { grid-template-rows: 1fr; }
.accordion-body > p {
  overflow: hidden;
  margin: 0;
  padding: 0 1.5rem 1.25rem;
  font-size: 0.925rem;
  line-height: 1.76;
  color: var(--color-ink-soft);
}

/* ── Contact form ────────────────────────────────────────────────────────── */
.contact-form { display: grid; gap: 1.125rem; }

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: 0.01em;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border: 1.5px solid rgba(12,40,48,0.13);
  border-radius: var(--radius-md);
  font: inherit;
  font-size: 0.94rem;
  color: var(--color-ink);
  background: #f7fafa;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(13,138,131,0.10);
  background: var(--color-white);
}

.contact-form textarea { resize: vertical; min-height: 130px; }

.form-success {
  display: grid;
  gap: 0.75rem;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(93,158,107,0.07);
}

/* ── Featured project ────────────────────────────────────────────────────── */
.featured-project {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #091820 0%, #182e38 100%);
  padding: 3.5rem;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2.5rem;
}

.featured-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.14;
}

.featured-content { position: relative; z-index: 1; }

.client-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.9rem;
  background: rgba(93,158,107,0.14);
  border: 1px solid rgba(93,158,107,0.24);
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: 1.125rem;
}

.featured-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-item strong {
  display: block;
  font-family: "Barlow", sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-green);
  line-height: 1;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.stat-item span { font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.38); }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  padding: 2rem 0 0;
  background: var(--color-dark);
  color: rgba(255,255,255,0.60);
}

.footer-grid {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  margin-bottom: 0;
}

.footer-brand { display: inline-block; margin-bottom: 0.625rem; opacity: 0.88; transition: opacity var(--t-fast); }
.footer-brand:hover { opacity: 1; }
.footer-brand img {
  width: clamp(48px, 5vw, 64px);
  height: auto;
  filter: brightness(0) invert(1);
}

.footer-title {
  margin-bottom: 0.5rem;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.30);
}

.site-footer p { font-size: 0.78rem; line-height: 1.55; color: rgba(255,255,255,0.50); }
.site-footer a { transition: color var(--t-fast); }
.site-footer a:hover { color: rgba(255,255,255,0.90); }

.footer-bottom {
  padding: 0.875rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.70rem;
  color: rgba(255,255,255,0.22);
}

/* ── Specialties ─────────────────────────────────────────────────────────── */
.specialties-group { margin-bottom: 3.5rem; }
.specialties-group:last-of-type { margin-bottom: 0; }

.specialties-group-title {
  font-family: "Barlow", sans-serif;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 1.5rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.005em;
}

.specialties-group-title::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background: var(--color-teal);
  border-radius: 2px;
  flex-shrink: 0;
}

.specialties-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(256px, 1fr));
  gap: 1.125rem;
}

.specialty-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}

.specialty-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13,138,131,0.16);
}

.specialty-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(13,138,131,0.08), rgba(93,158,107,0.05));
  border: 1px solid rgba(13,138,131,0.11);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-teal);
  margin-bottom: 0.2rem;
  transition: background var(--t-base), border-color var(--t-base);
}

.specialty-card:hover .specialty-icon {
  background: linear-gradient(135deg, rgba(13,138,131,0.14), rgba(93,158,107,0.09));
  border-color: rgba(13,138,131,0.22);
}

.specialty-card h4 {
  margin: 0;
  font-family: "Barlow", sans-serif;
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
}

.specialty-card p { margin: 0; font-size: 0.86rem; color: var(--color-ink-soft); line-height: 1.62; }

/* ── Reveal ──────────────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 480ms ease, transform 480ms ease;
}

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

/* ── Scroll offset for sticky header ────────────────────────────────────── */
[id] { scroll-margin-top: 84px; }

/* ── Touch targets ───────────────────────────────────────────────────────── */
.btn, .tab-btn, .accordion-btn, .nav-toggle { touch-action: manipulation; }

/* ── Map ─────────────────────────────────────────────────────────────────── */
.map-embed { margin-top: 0.75rem; }
.map-embed iframe {
  width: 100%;
  height: 220px;
  border: 0;
  border-radius: 12px;
  margin-top: 0.75rem;
  display: block;
}

/* ── Footer links (clases para quitar inline styles) ─────────────────────── */
.footer-contact-item { margin-top: 0.5rem; }
.footer-subtext {
  margin-top: 0.75rem;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.34);
}
.footer-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.footer-link {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.36);
  transition: color var(--t-fast);
}
.footer-link:hover { color: rgba(255,255,255,0.80); }

/* ── Section-dark headings ───────────────────────────────────────────────── */
.section-dark h2,
.section-dark .section-heading h2 { color: var(--color-white); }
.section-dark .section-heading     { color: var(--color-white); }
.section-intro-light               { color: rgba(255,255,255,0.72); }

/* ── Projects shell ──────────────────────────────────────────────────────── */
.projects-shell { position: relative; }

/* ── Content card accent ─────────────────────────────────────────────────── */
.content-card-accent {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(13,138,131,0.92), rgba(93,158,107,0.88));
  color: var(--color-white);
  min-height: 100%;
  border-radius: var(--radius-lg);
}

/* ── Services grid (legacy) ──────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.service-category {
  padding: 2.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.service-category:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.cat-number {
  display: inline-block;
  margin-bottom: 0.875rem;
  font-family: "Barlow", sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(13,138,131,0.13);
  letter-spacing: -0.02em;
}

.service-category h3 { color: var(--color-ink); margin-bottom: 0.75rem; }
.cat-text { color: var(--color-ink-soft); margin: 0 0 1.25rem; line-height: 1.65; font-size: 0.95rem; }

.service-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; border-top: 1px solid var(--color-line); padding-top: 1.25rem; }
.service-list li { padding-left: 1.1rem; position: relative; font-size: 0.9rem; line-height: 1.5; color: var(--color-ink-soft); }
.service-list li::before { content: "—"; position: absolute; left: 0; color: var(--color-teal); font-weight: 700; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .card-grid-four,
  .project-grid         { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card-grid-three      { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mvp-grid             { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .services-tabs        { grid-template-columns: 230px 1fr; }
  .about-intro          { gap: 3rem; }
  /* intro-grid (métricas) se mantiene en 4 columnas hasta 820px */
}

/* ── Breakpoint intermedio (≤760px) ──────────────────────────────────────── */
@media (max-width: 760px) {
  .project-grid       { grid-template-columns: 1fr; }
  .specialties-grid   { grid-template-columns: 1fr; }
  .card-grid-three    { grid-template-columns: 1fr; }
  .mvp-grid           { grid-template-columns: 1fr; }
}

/* ── Tablet / Mobile nav (≤820px) ─────────────────────────────────────────── */
@media (max-width: 820px) {
  /* Nav */
  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 60;
  }

  .site-nav {
    position: fixed;
    top: 72px;
    right: 1rem;
    left: 1rem;
    display: grid;
    gap: 0.25rem;
    padding: 0.875rem;
    background: rgba(255,255,255,0.98);
    border: 1px solid rgba(12,40,48,0.08);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity var(--t-base), transform var(--t-base);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 55;
  }

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

  .site-nav a {
    padding: 0.8rem 1rem;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .site-nav a[href="/contact"] {
    margin-left: 0;
    background: rgba(13,138,131,0.08);
    color: var(--color-teal) !important;
    border-radius: var(--radius-sm);
    justify-content: center;
  }

  /* Hero */
  .hero, .hero-sub { min-height: auto; }
  .hero-content    { padding: 6.5rem 0 4rem; margin-left: 0; }
  .hero-text       { font-size: 1rem; }

  /* Grids */
  .intro-grid                              { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card-grid, .card-grid-three,
  .card-grid-four                          { grid-template-columns: 1fr; }
  .project-grid                            { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid, .contact-grid               { grid-template-columns: 1fr; }
  .footer-grid                             { grid-template-columns: 1fr; gap: 2rem; }
  .mvp-grid                                { grid-template-columns: 1fr; }
  .about-intro                             { grid-template-columns: 1fr; gap: 2rem; }
  .services-tabs                           { grid-template-columns: 1fr; }

  /* CTA */
  .cta-shell          { grid-template-columns: 1fr; text-align: center; }
  .cta-shell .btn     { width: 100%; justify-content: center; }

  /* Photo strip */
  .photo-strip-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    justify-items: center;
  }
  .strip-divider { display: none; }

  /* Services tabs */
  .tab-nav {
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .tab-nav::-webkit-scrollbar { display: none; }

  .tab-btn {
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.875rem 1rem;
    border-left: none;
    border-bottom: 3px solid transparent;
    text-align: center;
    flex-shrink: 0;
    min-width: 110px;
    min-height: 44px;
  }

  .tab-btn.is-active { border-bottom-color: var(--color-teal); border-left-color: transparent; }
  .tab-arrow         { display: none; }
  .tab-panels        { min-height: auto; }
  .panel-header      { flex-direction: column; gap: 1rem; }
  .tab-panel         { padding: 2rem 1.5rem; }

  /* Misc */
  .value-stats, .featured-stats { gap: 1.5rem; }
  .featured-project              { padding: 2rem 1.5rem; }
  .specialties-grid              { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact-grid                     { grid-template-columns: 1fr 1fr; }
  .section-heading               { margin-bottom: 2.5rem; }
  .section                       { padding: 5rem 0; }
  .info-card                     { padding: 1.75rem; }
  .project-card                  { padding: 1.75rem; }
  .mvp-card                      { padding: 1.75rem; }
  .hero-text                     { max-width: 46ch; }

  /* Footer */
  .footer-nav  { gap: 0.875rem; }
  .footer-link { font-size: 0.80rem; }

  /* Mapa responsive */
  .map-embed iframe { height: 200px; }
}

/* ── Mobile (≤640px) ──────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .container { width: min(calc(100% - 1.5rem), var(--container)); }

  h1 { font-size: clamp(1.9rem, 7.5vw, 2.5rem); }
  h2 { font-size: clamp(1.55rem, 6vw, 2rem); }
  h3 { font-size: 1.05rem; }

  .section         { padding: 3.5rem 0; }
  .section-heading { margin-bottom: 1.75rem; }
  .section-heading h2 { max-width: 100%; }

  /* Hero */
  .hero-content  { padding: 5.5rem 0 3rem; }
  .hero-content,
  .hero-content.narrow { max-width: 100%; }
  .hero-sub      { min-height: 46svh; }
  .hero-text     { font-size: 0.95rem; margin-top: 1rem; max-width: 42ch; }
  .hero-actions  { flex-direction: column; align-items: stretch; gap: 0.625rem; margin-top: 1.75rem; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section-intro { max-width: 100%; }

  /* Metrics — mantener 2×2 */
  .intro-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-card {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    padding: 1.5rem 1rem;
  }
  .metric-card:nth-child(odd)          { border-right: 1px solid rgba(255,255,255,0.07); }
  .metric-card:nth-last-child(-n+2)    { border-bottom: none; }
  .metric-card strong                  { font-size: 2rem; }

  /* Proyectos */
  .project-grid { grid-template-columns: 1fr; }

  /* Especialidades */
  .specialties-grid { grid-template-columns: 1fr; }
  .specialties-group { margin-bottom: 2.5rem; }

  /* Servicios tabs */
  .tab-btn    { min-width: 90px; padding: 0.75rem 0.625rem; }
  .tab-label  { font-size: 0.78rem; }
  .tab-panel  { padding: 1.5rem 1rem; }
  .panel-items { grid-template-columns: 1fr; }
  .panel-items li { font-size: 0.84rem; }

  /* Value stats → 2 cols */
  .value-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    padding-top: 1.75rem;
  }

  /* Featured stats → 2 cols */
  .featured-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* CTA */
  .cta-shell     { grid-template-columns: 1fr; text-align: center; }
  .cta-shell h2  { max-width: none; }

  /* Photo strip */
  .photo-strip-content   { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
  .section-photo-strip   { padding: 3rem 0; }
  .strip-stat strong     { font-size: 2rem; }

  /* Cards */
  .info-card        { padding: 1.5rem; }
  .content-card     { padding: 1.5rem 1.125rem; }
  .mvp-card         { padding: 1.5rem; }
  .featured-project { padding: 1.5rem 1rem; }
  .specialty-card   { padding: 1.125rem; }

  /* About */
  .about-quote  { padding: 1rem 1.125rem; }
  .fact-grid    { grid-template-columns: 1fr 1fr; }
  .fact-tile    { padding: 1.125rem 1rem; }

  /* Contact */
  .contact-grid { gap: 1.25rem; }

  /* Footer */
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .site-footer   { padding: 3rem 0 0; }
  .footer-grid   { gap: 1.75rem; }
  .footer-subtext { font-size: 0.80rem; margin-top: 0.5rem; }
  .footer-nav    { gap: 0.625rem; }
  .footer-link   { font-size: 0.80rem; color: rgba(255,255,255,0.40); }

  /* Mapa */
  .map-embed iframe { height: clamp(160px, 45vw, 220px); }
}

/* ── Teléfonos pequeños (≤420px) ─────────────────────────────────────────── */
@media (max-width: 420px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }

  .hero-content  { padding: 5rem 0 2.5rem; }
  .section       { padding: 3rem 0; }

  /* Métricas → 1 columna en pantallas muy pequeñas */
  .intro-grid { grid-template-columns: 1fr; }
  .metric-card:nth-child(odd) { border-right: none; }
  .metric-card { border-bottom: 1px solid rgba(255,255,255,0.07); padding: 1.25rem 1rem; }
  .metric-card:last-child { border-bottom: none; }

  /* Stats → 1 col */
  .value-stats   { grid-template-columns: 1fr; }
  .featured-stats { grid-template-columns: 1fr 1fr; }

  /* Photo strip → 1 col */
  .photo-strip-content { grid-template-columns: 1fr; gap: 1.5rem; }

  .tab-btn { min-width: 80px; }
  .fact-grid { grid-template-columns: 1fr; }
}