/* ===================================
   FRAME FACTORY — Estilos principales
   =================================== */

:root {
  --gold:        #bca269;
  --gold-dark:   #9a7c32;
  --dark:        #1a1a1a;
  --grey:        #595959;
  --grey-light:  #888;
  --light-bg:    #f5f5f5;
  --white:       #ffffff;
  --font:        'Montserrat', sans-serif;
  --radius:      6px;
  --shadow:      0 4px 24px rgba(0,0,0,0.15);
  --transition:  0.3s ease;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ===== CONTAINER ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== SECTIONS ===== */
.section { padding: 80px 0; }
.section--dark  { background: var(--grey); color: var(--white); }
.section--light { background: var(--light-bg); }

.section__header { text-align: center; margin-bottom: 52px; }
.section__title  { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 12px; }
.section__title--light { color: var(--white); }
.section__lead   { font-size: 1rem; color: var(--grey-light); max-width: 640px; margin: 0 auto; }

.tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(188,162,105,0.15);
  color: var(--gold);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 14px;
}
.tag--light { background: rgba(255,255,255,0.2); color: var(--white); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}
.btn--gold {
  background: var(--gold);
  color: var(--white);
  border-color: var(--gold);
}
.btn--gold:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(188,162,105,0.4);
}
.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn--outline:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }
.btn--outline-dark {
  background: transparent;
  color: var(--dark);
  border-color: rgba(0,0,0,0.3);
}
.btn--outline-dark:hover { background: rgba(0,0,0,0.06); border-color: var(--dark); }
.btn--full { width: 100%; }
.btn--sm   { padding: 8px 18px; font-size: 0.72rem; }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 12px 0;
  background: transparent;
  transition: background 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}
.header.scrolled {
  background: rgba(26,26,26,0.97);
  box-shadow: var(--shadow);
  padding: 10px 0;
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo__img  {
  height: 110px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.4));
  transition: height 0.35s ease;
}
.header.scrolled .logo__img {
  height: 52px;
}

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  padding: 8px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav__link:hover, .nav__link.active { color: var(--white); background: rgba(255,255,255,0.1); }
.nav__link--cta {
  background: var(--gold);
  color: var(--white) !important;
  padding: 8px 16px;
}
.nav__link--cta:hover { background: var(--gold-dark); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none;
  cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.hero__slide.active { opacity: 1; }

/* Real photos for slides */
.hero__slide--1 { background-image: url('../img/hero/hero1.jpg'); }
.hero__slide--2 { background-image: url('../img/hero/hero2.jpg'); }

.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.35) 60%, rgba(0,0,0,0.55) 100%);
  z-index: 1;
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 0 24px;
}
.hero__eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
  opacity: 0.9;
}
.hero__title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero__subtitle {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 36px;
}
.hero__btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero__dots {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex; gap: 10px;
}
.hero__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: background var(--transition);
}
.hero__dot.active { background: var(--gold); }

/* ===== FASE PRODUCTIVA ===== */
.fase {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}
.fase__bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
}
.fase__overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.58);
}
.fase__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 70px 40px 60px;
}
.fase__title {
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 48px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.fase__circles {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
}
.fase__col { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.fase__circle {
  width: 260px; height: 260px;
  border-radius: 50%;
  background: rgba(188,162,105,0.55);
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
  text-align: center;
  backdrop-filter: blur(2px);
  border: 2px solid rgba(188,162,105,0.4);
  transition: background var(--transition), transform var(--transition);
}
.fase__circle:hover {
  background: rgba(188,162,105,0.72);
  transform: scale(1.03);
}
.fase__circle-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}
.fase__num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  text-shadow: 0 2px 10px rgba(0,0,0,0.4);
  opacity: 0.9;
}
.fase__step {
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.4;
  color: var(--white);
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
  text-align: center;
}
.fase__sub {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  text-align: center;
}

/* ===== UPA ECOSYSTEM ===== */
.upa-eco {
  background: var(--dark);
  padding: 80px 0;
  color: var(--white);
}
.upa-eco__header { text-align: center; margin-bottom: 52px; }
.upa-eco__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.upa-eco__title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.upa-eco__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  max-width: 560px;
  margin: 0 auto;
}
.upa-eco__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  align-items: stretch;
}
.upa-eco__card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.upa-eco__img {
  height: 300px;
  flex-shrink: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.4s ease;
}
.upa-eco__card:hover .upa-eco__img { transform: scale(1.04); }

/* Real images for UPA cards — cargadas via lazy load (data-bg) */
.upa-eco__img--arquitectos  { background-position: center top; }

.upa-eco__content {
  padding: 24px 28px 28px;
  background: rgba(255,255,255,0.04);
  border-top: 3px solid var(--gold);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.upa-eco__content h3 {
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  color: var(--white);
}
.upa-eco__content p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 18px;
  line-height: 1.6;
  flex: 1;
}
.upa-eco__content .btn { align-self: flex-start; margin-top: auto; }

/* ===== NOSOTROS ===== */
.nosotros__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.nosotros__text p { font-size: 0.95rem; color: #444; margin-bottom: 16px; line-height: 1.8; }
.nosotros__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat__card {
  background: var(--grey);
  color: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat__num {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
}
.stat__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
}

/* ===== PARTNERS STRIP ===== */
.partners-strip {
  background: var(--light-bg);
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
  padding: 40px 0;
}
.partners-strip__label {
  text-align: center;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey-light);
  margin-bottom: 28px;
}
.partners-strip__grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.partner-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  min-width: 130px;
  gap: 4px;
}
.partner-logo__icon {
  width: 44px; height: 44px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 6px;
}
.partner-logo__icon--veratec  { background: #c0392b; }
.partner-logo__icon--fenstech { background: #2980b9; }
.partner-logo__icon--yilmaz   { background: #1a5fa8; }
.partner-logo__svg { height: 36px; width: auto; margin-bottom: 6px; object-fit: contain; }
.partner-logo span {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey);
}
.partner-logo small {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey-light);
}

/* ===== TIPOLOGÍA ===== */
.tipo__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}
.tipo__card {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  border: 1px solid #e0e0e0;
}
.tipo__card:hover .tipo__img  { transform: scale(1.06); }
.tipo__card:hover .tipo__name { background: var(--gold); color: var(--white); }
.tipo__img {
  height: 180px;
  background-size: cover;
  background-position: center;
  transition: transform 0.4s ease;
}
/* background-image cargado via lazy load (data-bg) */
.tipo__img--banderola    { background-color: #c8c0b0; }
.tipo__img--corrediza    { background-color: #b8c0c8; }
.tipo__img--corrediza2   { background-color: #bcc8c0; background-position: center; }
.tipo__img--corrediza3   { background-color: #c0b8c8; }
.tipo__img--abrir1       { background-color: #c8c8b0; }
.tipo__img--abrir2       { background-color: #c0c8c8; }
.tipo__img--oscilo       { background-color: #b0c0c8; }
.tipo__img--fijo         { background-color: #c8b0b8; }
.tipo__img--practicable  { background-color: #b8c8b0; }
.tipo__img--proyectante  { background-color: #c0b0c0; }

.tipo__name {
  display: block;
  text-align: center;
  padding: 12px 8px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--white);
  color: var(--dark);
  transition: background var(--transition), color var(--transition);
}

/* ===== COLORES VERATEC ===== */
.colores { background: #222; }
.colores .section__header { margin-bottom: 40px; }

.colores__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 48px;
}
.colores__img-wrap {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.colores__img { width: 100%; display: block; }

.colores__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.color__item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border-radius: 6px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: background var(--transition);
}
.color__item:hover { background: rgba(255,255,255,0.09); }
.color__swatch {
  width: 36px; height: 36px;
  border-radius: 4px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.color__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.color__info strong {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--white);
}
.color__info span {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.badge-pedido {
  color: var(--gold) !important;
}

.colores__cta {
  text-align: center;
  padding: 32px;
  background: rgba(188,162,105,0.1);
  border: 1px solid rgba(188,162,105,0.25);
  border-radius: 8px;
}
.colores__cta p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 20px;
}

/* ===== CATÁLOGOS ===== */
.catalogos__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.catalogo__card {
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
  transition: transform var(--transition), box-shadow var(--transition);
}
.catalogo__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.catalogo__preview {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: #f0ede8;
}
.catalogo__preview--yilmaz { background: linear-gradient(135deg, #1a3a6a 0%, #0d2040 100%); }
.catalogo__thumb {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top;
}
.catalogo__placeholder-img {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.catalogo__brand-letter {
  font-size: 7rem;
  font-weight: 900;
  color: rgba(255,255,255,0.15);
  font-family: var(--font);
}
.catalogo__badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--gold);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 4px;
}
.catalogo__body { padding: 28px; }
.catalogo__marca {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #c0392b;
  margin-bottom: 8px;
}
.catalogo__title {
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1.3;
}
.catalogo__desc {
  font-size: 0.84rem;
  color: #666;
  line-height: 1.65;
  margin-bottom: 24px;
}
.catalogo__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== PDF MODAL ===== */
.pdf-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}
.pdf-modal.open { display: flex; }
.pdf-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
}
.pdf-modal__box {
  position: relative;
  z-index: 1;
  width: min(92vw, 1000px);
  height: min(90vh, 800px);
  background: var(--white);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}
.pdf-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--dark);
  flex-shrink: 0;
}
.pdf-modal__title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
}
.pdf-modal__controls { display: flex; align-items: center; gap: 12px; }
.pdf-modal__close {
  width: 32px; height: 32px;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: var(--white);
  font-size: 1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
.pdf-modal__close:hover { background: rgba(255,255,255,0.25); }
.pdf-modal__body { flex: 1; overflow: hidden; }
.pdf-modal__body iframe {
  width: 100%; height: 100%;
  border: none;
  display: block;
}

/* ===== GALERÍA ===== */
.galeria {
  background: var(--grey);
  padding: 80px 0 0;
}
.galeria .section__header { color: var(--white); }
.galeria__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 300px 300px;
  gap: 3px;
  margin-top: 40px;
}
.galeria__item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: #444;
}
/* Real gallery images */
/* background-image cargado via lazy load (data-bg) */
.galeria__item--1,
.galeria__item--2,
.galeria__item--3,
.galeria__item--4,
.galeria__item--5,
.galeria__item--6 { background-size: cover; background-position: center; }

.galeria__item::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.25);
  transition: background var(--transition);
}
.galeria__item:hover::before { background: rgba(0,0,0,0.55); }

.galeria__overlay {
  position: absolute; inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}
.galeria__caption {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  padding: 6px 14px;
  border-radius: 4px;
  border-left: 3px solid var(--gold);
  transform: translateY(4px);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.galeria__item:hover .galeria__caption { opacity: 1; transform: translateY(0); }

.galeria__cta {
  text-align: center;
  padding: 48px 24px;
}

/* ===== CONTACTO ===== */
.contacto__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
}
.contacto__tagline {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
  line-height: 1.7;
}
.contacto__items { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.contacto__item { display: flex; gap: 14px; align-items: flex-start; }
.contacto__ico { font-size: 1.1rem; flex-shrink: 0; margin-top: 2px; }
.contacto__item > div { display: flex; flex-direction: column; gap: 2px; }
.contacto__item strong { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold); }
.contacto__item span  { font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.contacto__link { font-size: 0.88rem; color: var(--white); transition: color var(--transition); display: block; }
.contacto__link:hover { color: var(--gold); }

.contacto__social { display: flex; gap: 10px; flex-wrap: wrap; }
.social__btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  transition: background var(--transition);
}
.social__btn svg { width: 16px; height: 16px; }
.social__btn:hover { background: var(--gold); }
.social__btn--fenstech { background: rgba(41,128,185,0.3); }
.social__btn--fenstech:hover { background: #2980b9; }

.contacto__form-wrap {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 36px 32px;
}
.contacto__form-wrap h3 { font-size: 1.3rem; font-weight: 800; text-transform: uppercase; color: var(--white); margin-bottom: 8px; }
.contacto__form-wrap > p { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-bottom: 24px; }

/* Form elements */
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 0; }
.form__group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form__group label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.75); }
.form__group input,
.form__group textarea,
.form__group select {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.88rem;
  transition: border-color var(--transition);
}
.form__group select option { background: var(--dark); color: var(--white); }
.form__group input::placeholder,
.form__group textarea::placeholder { color: rgba(255,255,255,0.3); }
.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus {
  outline: none;
  border-color: var(--gold);
  background: rgba(255,255,255,0.1);
}
.form__group textarea { resize: vertical; min-height: 100px; }
.form__success { text-align: center; padding: 24px; }
.form__success h4 { color: var(--gold); font-size: 1.1rem; margin-bottom: 8px; }
.form__success p  { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.55);
  padding: 36px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer__inner { text-align: center; display: flex; flex-direction: column; gap: 12px; align-items: center; }
.footer__brand { font-size: 1rem; font-weight: 700; letter-spacing: 0.1em; color: var(--white); text-transform: uppercase; }
.footer__nav {
  display: flex; gap: 20px; flex-wrap: wrap; justify-content: center;
  font-size: 0.73rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
}
.footer__nav a { color: rgba(255,255,255,0.55); transition: color var(--transition); }
.footer__nav a:hover { color: var(--gold); }
.footer__copy    { font-size: 0.78rem; }
.footer__address { font-size: 0.75rem; }

/* ===== WHATSAPP FLOAT ===== */
.wa-float {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 999;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 20px rgba(37,211,102,0.5);
  transition: transform var(--transition), box-shadow var(--transition);
}
.wa-float svg { width: 28px; height: 28px; }
.wa-float:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,0.6); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .tipo__grid { grid-template-columns: repeat(4, 1fr); }
  .upa-eco__grid { grid-template-columns: 1fr 1fr; }
  .upa-eco__card:last-child { grid-column: 1 / -1; }
  .nosotros__grid { grid-template-columns: 1fr; gap: 40px; }
  .colores__layout { grid-template-columns: 1fr; }
  .colores__img-wrap { max-width: 500px; margin: 0 auto; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }

  .nav {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,26,26,0.98);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 999;
  }
  .nav.open { transform: translateX(0); }
  .nav__link { font-size: 1rem; padding: 12px 28px; }
  .hamburger { display: flex; z-index: 1000; }

  .upa-eco__grid { grid-template-columns: 1fr; }
  .upa-eco__card:last-child { grid-column: auto; }

  .galeria__grid { grid-template-columns: 1fr 1fr; grid-template-rows: 220px 220px 220px; }

  .tipo__grid { grid-template-columns: repeat(2, 1fr); }

  .contacto__grid { grid-template-columns: 1fr; gap: 40px; }
  .form__row { grid-template-columns: 1fr; }

  .catalogos__grid { grid-template-columns: 1fr; }

  .pdf-modal__box { width: 96vw; height: 88vh; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2.4rem; }
  .hero__btns { flex-direction: column; align-items: center; }
  .tipo__grid { grid-template-columns: repeat(2, 1fr); }
  .galeria__grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .galeria__item { height: 240px; }
  .nosotros__stats { grid-template-columns: 1fr 1fr; }
  .fase__circle { width: 200px; height: 200px; }
  .colores__layout { grid-template-columns: 1fr; }
}