/* =========================================================================
   El Gemelo Digital como acelerador de la I4.0 extremeña
   Light "digital twin" theme — cyan/teal digital + amber physical accent
   ========================================================================= */

/* ----------  Design tokens  ---------- */
:root {
  /* Brand */
  --navy:        #0b1f33;
  --ink:         #16283d;
  --slate:       #475569;
  --slate-light: #64748b;

  --cyan:        #0e7490;   /* digital primary  */
  --cyan-bright: #06b6d4;
  --teal:        #0d9488;
  --amber:       #ea7a1c;   /* physical accent  */
  --amber-soft:  #f59e0b;

  /* Surfaces */
  --bg:      #ffffff;
  --bg-soft: #f4f7fb;
  --bg-alt:  #eef3f8;
  --card:    #ffffff;
  --border:  #e2e8f0;
  --border-strong: #cbd8e6;

  /* Gradients */
  --grad-digital: linear-gradient(135deg, #0e7490 0%, #0d9488 100%);
  --grad-twin:    linear-gradient(120deg, #0e7490 0%, #0d9488 45%, #ea7a1c 115%);
  --grad-soft:    linear-gradient(180deg, #f7fafd 0%, #eef3f8 100%);

  /* Typography */
  --font-head: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;

  /* Radius & shadow */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15,42,66,.05), 0 2px 8px rgba(15,42,66,.05);
  --shadow-md: 0 6px 22px rgba(14,54,86,.09), 0 2px 6px rgba(14,54,86,.05);
  --shadow-lg: 0 24px 60px rgba(11,44,74,.16), 0 8px 22px rgba(11,44,74,.08);
  --ring: 0 0 0 3px rgba(6,182,212,.35);

  --maxw: 1200px;
  --nav-h: 72px;
}

/* ----------  Reset / base  ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--navy);
  line-height: 1.15;
  margin: 0 0 .5em;
  font-weight: 600;
  letter-spacing: -.015em;
}
p { margin: 0 0 1rem; }
a { color: var(--cyan); text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ----------  Layout helpers  ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: clamp(64px, 9vw, 120px) 0; position: relative; }
.section--soft { background: var(--bg-soft); }
.section--alt  { background: var(--grad-soft); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-head);
  font-size: .78rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: 2px;
  background: var(--grad-digital);
}

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow::before { display: none; }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
.section-head p { color: var(--slate); font-size: 1.08rem; margin-top: .4rem; }

/* ----------  Buttons  ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: .98rem;
  padding: 14px 26px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary { background: var(--grad-digital); color: #fff; box-shadow: 0 8px 24px rgba(13,148,136,.32); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(13,148,136,.4); }
.btn--ghost { background: #fff; color: var(--navy); border-color: var(--border-strong); }
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--cyan); color: var(--cyan); box-shadow: var(--shadow-md); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

/* =========================================================================
   NAVBAR
   ========================================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 100;
  display: flex; align-items: center;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
}
.nav.scrolled { border-bottom-color: var(--border); box-shadow: 0 4px 20px rgba(15,42,66,.06); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-head); font-weight: 700; color: var(--navy); letter-spacing: -.02em; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; flex: none;
  background: var(--grad-digital); position: relative;
  display: grid; place-items: center; box-shadow: 0 6px 16px rgba(13,148,136,.35);
}
.brand-mark::after { /* twin ghost */
  content: ""; position: absolute; inset: 0; border-radius: 11px;
  border: 1.5px solid rgba(255,255,255,.6);
  transform: translate(4px,4px); opacity: .55;
}
.brand-mark svg { width: 22px; height: 22px; color: #fff; position: relative; z-index: 1; }
.brand-txt { display: flex; flex-direction: column; line-height: 1.05; }
.brand-txt b { font-size: 1.02rem; }
.brand-txt span { font-size: .68rem; font-weight: 500; color: var(--slate-light); letter-spacing: .04em; font-family: var(--font-body); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-family: var(--font-head); font-weight: 500; font-size: .95rem;
  color: var(--ink); padding: 9px 14px; border-radius: 8px; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--cyan); background: var(--bg-soft); }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--navy); }
.nav-toggle svg { width: 28px; height: 28px; }

/* =========================================================================
   HERO
   ========================================================================= */
.hero {
  position: relative; padding: calc(var(--nav-h) + 60px) 0 90px;
  background:
    radial-gradient(60% 55% at 82% 12%, rgba(6,182,212,.14), transparent 60%),
    radial-gradient(50% 50% at 8% 90%, rgba(234,122,28,.10), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero::before { /* blueprint grid */
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(14,116,144,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,116,144,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 55%, transparent 100%);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--border);
  padding: 7px 15px 7px 8px; border-radius: 999px; font-size: .82rem; color: var(--slate);
  box-shadow: var(--shadow-sm); margin-bottom: 22px; font-weight: 500;
}
.hero-badge b { color: var(--navy); font-family: var(--font-head); }
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(13,148,136,.18); }

.hero h1 { font-size: clamp(2.3rem, 5.2vw, 3.9rem); font-weight: 700; }
.hero h1 .accent {
  background: var(--grad-twin); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lead { font-size: 1.16rem; color: var(--slate); max-width: 44ch; margin: 22px 0 30px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 34px; }

.hero-stats { display: flex; gap: 30px; flex-wrap: wrap; }
.hero-stats .stat b { font-family: var(--font-head); font-size: 1.7rem; color: var(--navy); font-weight: 700; display: block; letter-spacing: -.02em; }
.hero-stats .stat span { font-size: .82rem; color: var(--slate-light); }
.hero-stats .stat b .u { color: var(--teal); }

/* Hero visual — physical photo + digital twin HMI overlay */
.hero-visual { position: relative; }
.hero-photo {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid rgba(255,255,255,.7);
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.hero-photo::after { /* scanline / cyan digital tint on part */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 46%, rgba(6,182,212,.10) 60%, rgba(6,182,212,.05) 100%);
  mix-blend-mode: multiply;
}
.hero-tag {
  position: absolute; top: 14px; left: 14px; z-index: 3;
  background: rgba(11,31,51,.82); color: #cffafe; backdrop-filter: blur(6px);
  font-family: var(--font-head); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; display: inline-flex; gap: 7px; align-items: center;
}
.hero-tag .pulse { width: 7px; height: 7px; border-radius: 50%; background: #22d3ee; box-shadow: 0 0 0 0 rgba(34,211,238,.7); animation: pulse 2s infinite; }

.hmi {
  position: absolute; right: -18px; bottom: -26px; z-index: 4; width: 230px;
  background: rgba(11,31,51,.92); color: #e2f4fb; border-radius: 16px; padding: 16px 17px;
  box-shadow: var(--shadow-lg); border: 1px solid rgba(34,211,238,.25);
  backdrop-filter: blur(8px); font-family: var(--font-head);
}
.hmi h5 { color: #7dd3fc; font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 12px; font-weight: 600; }
.hmi-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 11px; font-size: .8rem; }
.hmi-row:last-child { margin-bottom: 0; }
.hmi-row span { color: #94b8cc; font-family: var(--font-body); }
.hmi-row b { color: #fff; font-size: .95rem; }
.hmi-bar { height: 5px; border-radius: 3px; background: rgba(255,255,255,.12); overflow: hidden; margin-top: 4px; }
.hmi-bar i { display: block; height: 100%; border-radius: 3px; background: linear-gradient(90deg,#22d3ee,#2dd4bf); }

@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(34,211,238,.6);} 70% { box-shadow: 0 0 0 9px rgba(34,211,238,0);} 100% { box-shadow: 0 0 0 0 rgba(34,211,238,0);} }

/* Marquee of participants under hero */
.hero-foot { position: relative; z-index: 1; margin-top: 66px; border-top: 1px solid var(--border); padding-top: 26px; }
.hero-foot p { text-align: center; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--slate-light); margin: 0 0 16px; font-family: var(--font-head); }
.hero-parts { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 14px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--border);
  padding: 8px 16px; border-radius: 999px; font-size: .88rem; font-weight: 500; color: var(--ink); box-shadow: var(--shadow-sm);
}
.chip .cd { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); }
.chip.amber .cd { background: var(--amber); }

/* =========================================================================
   INTRO
   ========================================================================= */
.intro-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: start; }
.intro-lead p { font-size: 1.06rem; color: var(--slate); }
.intro-lead .lead-first { font-size: 1.2rem; color: var(--ink); font-weight: 500; }
.intro-lead .lead-first strong { color: var(--cyan); }

.concept-cards { display: grid; gap: 16px; }
.ccard {
  display: flex; gap: 16px; padding: 20px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-md); box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s;
}
.ccard:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.ccard .ic {
  flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(14,116,144,.09); color: var(--cyan);
}
.ccard.amber .ic { background: rgba(234,122,28,.11); color: var(--amber); }
.ccard .ic svg { width: 24px; height: 24px; }
.ccard h4 { font-size: 1.05rem; margin-bottom: 3px; }
.ccard p { font-size: .93rem; color: var(--slate); margin: 0; }

.ods { margin-top: 40px; }
.ods h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; color: var(--slate-light); margin-bottom: 12px; }
.ods-list { display: flex; flex-wrap: wrap; gap: 10px; }
.ods-item { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 10px; background: var(--bg-soft); border: 1px solid var(--border); font-size: .86rem; font-weight: 500; }
.ods-item b { font-family: var(--font-head); color: var(--teal); }

/* =========================================================================
   PARTICIPANTES
   ========================================================================= */
.part-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.part {
  position: relative; background: var(--card); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s; overflow: hidden;
}
.part::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--grad-digital); }
.part.amber::before { background: linear-gradient(180deg,var(--amber),var(--amber-soft)); }
.part:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.part-role { font-family: var(--font-head); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); font-weight: 600; margin-bottom: 10px; display: inline-block; }
.part.amber .part-role { color: var(--amber); }
.part h3 { font-size: 1.28rem; margin-bottom: 6px; }
.part .loc { display: inline-flex; align-items: center; gap: 6px; font-size: .86rem; color: var(--slate-light); margin-bottom: 14px; }
.part .loc svg { width: 15px; height: 15px; }
.part p { font-size: .95rem; color: var(--slate); margin: 0; }
.part-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.part-tags span { font-size: .76rem; padding: 4px 11px; border-radius: 999px; background: var(--bg-soft); color: var(--slate); border: 1px solid var(--border); }

.coord {
  margin-top: 24px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px 30px;
  background: var(--navy); color: #dbeafe; border-radius: var(--r-lg); padding: 24px 30px;
  background-image: radial-gradient(40% 90% at 90% 10%, rgba(6,182,212,.22), transparent 60%);
}
.coord .ic { width: 46px; height: 46px; border-radius: 12px; background: rgba(255,255,255,.1); display: grid; place-items: center; color: #67e8f9; flex: none; }
.coord .ic svg { width: 24px; height: 24px; }
.coord-txt b { color: #fff; font-family: var(--font-head); font-size: 1.05rem; }
.coord-txt span { display: block; font-size: .88rem; color: #93b6cc; }
.coord-links { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap; }
.coord-links a { display: inline-flex; align-items: center; gap: 7px; font-size: .86rem; color: #cffafe; background: rgba(255,255,255,.08); padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(255,255,255,.14); transition: background .2s; }
.coord-links a:hover { background: rgba(255,255,255,.18); }
.coord-links svg { width: 15px; height: 15px; }

/* =========================================================================
   TECNOLOGÍAS
   ========================================================================= */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-md); padding: 24px;
  box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s;
}
.tech:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(6,182,212,.4); }
.tech .ic { width: 50px; height: 50px; border-radius: 13px; background: var(--grad-digital); display: grid; place-items: center; color: #fff; margin-bottom: 16px; box-shadow: 0 8px 18px rgba(13,148,136,.25); }
.tech.alt .ic { background: linear-gradient(135deg,var(--amber),var(--amber-soft)); box-shadow: 0 8px 18px rgba(234,122,28,.25); }
.tech .ic svg { width: 26px; height: 26px; }
.tech h4 { font-size: 1.06rem; margin-bottom: 6px; }
.tech p { font-size: .92rem; color: var(--slate); margin: 0; }

.tech-showcase { margin-top: 40px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; align-items: stretch; }
.showcase-main { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-md); min-height: 320px; }
.showcase-main img { width: 100%; height: 100%; object-fit: cover; }
.showcase-cap { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 24px 20px; color: #fff;
  background: linear-gradient(0deg, rgba(11,31,51,.92), rgba(11,31,51,.0)); }
.showcase-cap b { font-family: var(--font-head); font-size: 1.15rem; display: block; }
.showcase-cap span { font-size: .9rem; color: #cbd5e1; }
.showcase-side { display: grid; grid-template-rows: repeat(2,1fr); gap: 24px; }
.showcase-side .cell { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.showcase-side .cell img { width: 100%; height: 100%; object-fit: cover; min-height: 148px; }

/* =========================================================================
   DESARROLLO — timeline + video
   ========================================================================= */
.timeline { position: relative; display: grid; gap: 22px; }
.tl-line { position: absolute; left: 27px; top: 12px; bottom: 12px; width: 2px; background: linear-gradient(180deg,var(--cyan),var(--teal),var(--amber)); opacity: .35; }
.phase {
  position: relative; display: grid; grid-template-columns: 56px 1fr; gap: 22px; align-items: start;
}
.phase-num {
  width: 56px; height: 56px; border-radius: 16px; background: #fff; border: 2px solid var(--cyan);
  display: grid; place-items: center; font-family: var(--font-head); font-weight: 700; font-size: 1.3rem; color: var(--cyan);
  z-index: 2; box-shadow: var(--shadow-sm);
}
.phase:nth-child(3) .phase-num { border-color: var(--teal); color: var(--teal); }
.phase:nth-child(4) .phase-num { border-color: var(--amber); color: var(--amber); }
.phase-body { background: var(--card); border: 1px solid var(--border); border-radius: var(--r-md); padding: 24px 26px; box-shadow: var(--shadow-sm); transition: box-shadow .25s, transform .25s; }
.phase-body:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.phase-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.phase-meta span { font-size: .76rem; font-family: var(--font-head); font-weight: 500; padding: 4px 11px; border-radius: 999px; background: var(--bg-soft); color: var(--slate); border: 1px solid var(--border); }
.phase-meta .resp { background: rgba(14,116,144,.08); color: var(--cyan); border-color: rgba(14,116,144,.18); }
.phase-body h4 { font-size: 1.18rem; margin-bottom: 8px; }
.phase-body ul { display: grid; gap: 8px; margin-top: 12px; }
.phase-body li { position: relative; padding-left: 22px; font-size: .93rem; color: var(--slate); }
.phase-body li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 7px; height: 7px; border-radius: 2px; background: var(--teal); transform: rotate(45deg); }

.video-block { margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.video-frame { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-lg); background: #000; }
.video-frame video { width: 100%; display: block; }
.video-txt h3 { font-size: 1.6rem; }
.video-txt p { color: var(--slate); }
.video-txt .eyebrow { color: var(--amber); }
.video-txt .eyebrow::before { background: linear-gradient(90deg,var(--amber),var(--amber-soft)); }

/* =========================================================================
   GALERÍA
   ========================================================================= */
.gal-filter { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 34px; }
.gal-filter button {
  font-family: var(--font-head); font-weight: 500; font-size: .9rem; padding: 9px 20px; border-radius: 999px;
  border: 1px solid var(--border); background: #fff; color: var(--slate); cursor: pointer; transition: all .2s;
}
.gal-filter button:hover { border-color: var(--cyan); color: var(--cyan); }
.gal-filter button.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.gallery { columns: 3; column-gap: 16px; }
.gitem {
  position: relative; margin: 0 0 16px; border-radius: var(--r-md); overflow: hidden; cursor: pointer;
  break-inside: avoid; box-shadow: var(--shadow-sm); display: block; width: 100%; border: 0; padding: 0; background: none;
}
.gitem img { width: 100%; transition: transform .5s ease; }
.gitem::after {
  content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(11,31,51,.5), transparent 55%);
  opacity: 0; transition: opacity .3s;
}
.gitem .zoom {
  position: absolute; right: 12px; bottom: 12px; z-index: 2; width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,.92); display: grid; place-items: center; color: var(--navy);
  opacity: 0; transform: translateY(8px); transition: opacity .3s, transform .3s;
}
.gitem .zoom svg { width: 19px; height: 19px; }
.gitem:hover img { transform: scale(1.06); }
.gitem:hover::after { opacity: 1; }
.gitem:hover .zoom { opacity: 1; transform: translateY(0); }
.gitem:focus-visible { outline: none; box-shadow: var(--ring); }
.gitem.hide { display: none; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(8,18,30,.94); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; padding: 24px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 92vw; max-height: 84vh; border-radius: var(--r-md); box-shadow: var(--shadow-lg); }
.lb-btn {
  position: absolute; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); color: #fff;
  width: 52px; height: 52px; border-radius: 50%; cursor: pointer; display: grid; place-items: center; transition: background .2s;
}
.lb-btn:hover { background: rgba(255,255,255,.25); }
.lb-btn svg { width: 26px; height: 26px; }
.lb-close { top: 22px; right: 22px; }
.lb-prev { left: 22px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 22px; top: 50%; transform: translateY(-50%); }
.lb-count { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); color: #cbd5e1; font-family: var(--font-head); font-size: .9rem; }

/* =========================================================================
   MANUALES
   ========================================================================= */
.docs-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.doc {
  display: flex; flex-direction: column; gap: 14px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 24px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s;
}
.doc:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.doc-top { display: flex; align-items: center; justify-content: space-between; }
.doc .ic { width: 48px; height: 48px; border-radius: 12px; background: rgba(14,116,144,.09); color: var(--cyan); display: grid; place-items: center; }
.doc.amber .ic { background: rgba(234,122,28,.1); color: var(--amber); }
.doc .ic svg { width: 25px; height: 25px; }
.doc .ext { font-family: var(--font-head); font-size: .68rem; font-weight: 600; letter-spacing: .08em; color: var(--slate-light); border: 1px solid var(--border); padding: 3px 8px; border-radius: 6px; }
.doc h4 { font-size: 1.04rem; margin: 0; }
.doc p { font-size: .89rem; color: var(--slate); margin: 0; flex: 1; }
.doc-link { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-head); font-weight: 600; font-size: .9rem; color: var(--cyan); }
.doc-link svg { width: 16px; height: 16px; transition: transform .2s; }
.doc:hover .doc-link svg { transform: translateX(3px); }

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: var(--navy); color: #b9cbdb; padding-top: 64px; position: relative; overflow: hidden; }
.footer::before { content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 44px 44px; mask-image: radial-gradient(90% 60% at 50% 0%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(90% 60% at 50% 0%, #000, transparent 75%); }
.footer .wrap { position: relative; z-index: 1; }
.foot-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,.1); }
.foot-brand .brand { color: #fff; margin-bottom: 16px; }
.foot-brand .brand-txt span { color: #7d99b0; }
.foot-brand p { font-size: .93rem; color: #93aec4; max-width: 40ch; }
.foot-col h5 { font-family: var(--font-head); color: #fff; font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 16px; }
.foot-col a, .foot-col li { color: #a9c0d4; font-size: .93rem; margin-bottom: 10px; display: block; transition: color .2s; }
.foot-col a:hover { color: #67e8f9; }

.logos-wall { padding: 40px 0 20px; }
.logos-wall p { text-align: center; font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: #7d99b0; margin: 0 0 24px; font-family: var(--font-head); }
.logos {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 20px 34px;
  background: #fff; border-radius: var(--r-lg); padding: 28px 34px; box-shadow: var(--shadow-lg);
}
.logos img { height: 52px; width: auto; object-fit: contain; }
.logos img.tall { height: 60px; }
.logos img.wide { height: 30px; }

.foot-legal { text-align: center; padding: 26px 0 34px; font-size: .84rem; color: #7d99b0; }
.foot-legal a { color: #93aec4; }

/* =========================================================================
   Scroll reveal
   ========================================================================= */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,1,.36,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 1000px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 560px; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .tech-grid { grid-template-columns: repeat(2,1fr); }
  .tech-showcase { grid-template-columns: 1fr; }
  .video-block { grid-template-columns: 1fr; gap: 26px; }
  .gallery { columns: 2; }
  .docs-grid { grid-template-columns: repeat(2,1fr); }
  .foot-top { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: rgba(255,255,255,.98); backdrop-filter: blur(14px); padding: 12px; gap: 2px;
    border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md);
    transform: translateY(-140%); transition: transform .35s cubic-bezier(.22,1,.36,1); pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); pointer-events: auto; }
  .nav-links a { padding: 13px 16px; font-size: 1rem; }
  .nav-toggle { display: inline-flex; }

  .part-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .docs-grid { grid-template-columns: 1fr; }
  .gallery { columns: 1; }
  .coord { flex-direction: column; align-items: flex-start; }
  .coord-links { margin-left: 0; }
  .phase { grid-template-columns: 44px 1fr; gap: 16px; }
  .phase-num { width: 44px; height: 44px; font-size: 1.1rem; }
  .tl-line { left: 21px; }
  .hmi { width: 190px; right: -6px; }
  .foot-top { grid-template-columns: 1fr; gap: 30px; }
  .logos { padding: 22px; gap: 18px 24px; }
  .logos img { height: 42px; }
  .logos img.tall { height: 48px; }
  .logos img.wide { height: 24px; }
  .hero-stats { gap: 22px; }
  .lb-prev { left: 10px; } .lb-next { right: 10px; }
}

@media (max-width: 400px) {
  .wrap { padding: 0 16px; }
  .hmi { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}