/* Inter allotjada al mateix servidor (sense Google Fonts: no es transfereix la IP a tercers) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('/amiant/assets/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url('/amiant/assets/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* ==========================================================================
   TectoIng Design System v5
   Spine: A — Typography-first minimal
   Motif: Hairline rules + section numbers
   Base: 8px spacing scale
   ========================================================================== */

/* --- Tokens --- */
:root {
  --white:       #ffffff;
  --bg:          #f7f8fa;
  --surface:     #ffffff;
  --text:        #1a1d23;
  --text-subtle: #6b7078;
  --border:      #e5e7eb;
  --accent:      #f4811f;
  --accent-hover:#d46a0a;
  --accent-bg:   #fef4ea;
  --mark:        #0a7e72;
  --mark-light:  #eef7f5;
  --navy:        #113a52;
  --navy-dark:   #081c28;

  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.06);
  --shadow-md:  0 4px 12px rgba(0,0,0,.07);
  --shadow-lg:  0 8px 30px rgba(0,0,0,.08);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.1);

  --max-w: 1200px;
  --header-h: 72px;
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{
  font-family:var(--font-sans);font-size:16px;line-height:1.6;
  color:var(--text);-webkit-font-smoothing:antialiased;
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block}
a{color:var(--mark);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
ul{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--space-6)}

/* --- Skip link --- */
.skip-link{
  position:fixed;top:-100%;left:var(--space-4);z-index:9999;
  padding:var(--space-2) var(--space-4);
  background:var(--accent);color:var(--white);font-weight:600;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  transition:top .2s;
}
.skip-link:focus{top:0}

/* --- Typography --- */
h1,h2,h3,h4{font-family:var(--font-sans);font-weight:700;line-height:1.15;letter-spacing:-.025em;color:var(--navy-dark)}
h1{font-size:clamp(2rem,4.5vw,3.25rem)}
h2{font-size:clamp(1.6rem,3vw,2.25rem)}
h3{font-size:clamp(1.15rem,1.5vw,1.35rem)}
.section-label{
  display:flex;align-items:center;gap:var(--space-2);
  font-weight:600;font-size:.75rem;text-transform:uppercase;
  letter-spacing:.1em;color:var(--mark);margin-bottom:var(--space-2);
}
.section-label::before{
  content:'';display:block;width:24px;height:2px;background:var(--mark);
}
.section-desc{
  font-size:1.05rem;color:var(--text-subtle);max-width:600px;
  line-height:1.7;
}

/* --- Section rhythm --- */
.section{padding:var(--space-20) 0}
.section-header{margin-bottom:var(--space-12)}
.section-dark{background:var(--navy-dark);color:var(--white)}
.section-dark .section-label::before{background:var(--accent)}
.section-dark .section-label{color:var(--accent)}
.section-dark h2{color:var(--white)}
.section-dark .section-desc{color:rgba(255,255,255,.65)}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;gap:var(--space-2);
  font-family:var(--font-sans);font-weight:600;
  font-size:.85rem;letter-spacing:.02em;
  padding:var(--space-3) var(--space-6);
  border-radius:var(--radius-sm);
  border:none;cursor:pointer;
  transition:all .25s;text-decoration:none;
}
.btn-primary{
  background:var(--accent);color:var(--white);
  box-shadow:0 2px 8px rgba(244,129,31,.2);
}
.btn-primary:hover{
  background:var(--accent-hover);color:var(--white);
  transform:translateY(-1px);box-shadow:0 4px 14px rgba(244,129,31,.3);
}
.btn-outline{
  background:transparent;color:var(--text);
  border:1.5px solid var(--border);
}
.btn-outline:hover{
  border-color:var(--mark);color:var(--mark);
  background:var(--mark-light);
}
.btn-light{
  background:rgba(255,255,255,.12);color:var(--white);
  border:1.5px solid rgba(255,255,255,.25);
}
.btn-light:hover{
  background:rgba(255,255,255,.2);border-color:var(--white);color:var(--white);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s;
}
.header.scrolled{
  border-bottom-color:var(--border);
  box-shadow:var(--shadow-sm);
}
.header .container{
  display:flex;align-items:center;justify-content:space-between;height:100%;
}
.header-logo{display:flex;align-items:center;gap:var(--space-2);text-decoration:none}
.header-logo img{height:38px;width:auto}
.header-logo span{
  font-weight:800;font-size:1.05rem;color:var(--navy-dark);letter-spacing:-.03em;
}
.header-nav{display:flex;align-items:center;gap:var(--space-8)}
.header-nav a:not(.btn){
  font-weight:500;font-size:.875rem;color:var(--text-subtle);
  position:relative;padding:var(--space-1) 0;transition:color .2s;
}
.header-nav a:not(.btn):hover{color:var(--text)}
.header-nav a:not(.btn)::after{
  content:'';position:absolute;bottom:-2px;left:0;
  width:0;height:1.5px;background:var(--accent);
  transition:width .3s;
}
.header-nav a:not(.btn):hover::after{width:100%}

.menu-toggle{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:var(--space-1);
}
.menu-toggle span{
  display:block;width:22px;height:2px;
  background:var(--navy-dark);border-radius:2px;
  transition:all .3s;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  position:relative;margin-top:var(--header-h);
  background:var(--navy-dark) url('../images/hero.jpg') center/cover no-repeat;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(8,28,40,.87) 0%,rgba(8,28,40,.6) 60%,rgba(10,126,114,.35) 100%);
}
.hero .container{position:relative;z-index:1;padding:var(--space-16) var(--space-6)}
.hero-content{max-width:640px}
.hero-content h1{color:var(--white);margin-bottom:var(--space-4)}
.hero-content p{
  font-size:1.1rem;color:rgba(255,255,255,.85);
  line-height:1.7;max-width:520px;margin-bottom:var(--space-8);
}
.hero-trust{
  display:flex;gap:var(--space-8);margin-bottom:var(--space-8);
  flex-wrap:wrap;
}
.hero-trust span{
  font-size:.85rem;color:rgba(255,255,255,.65);
  display:flex;align-items:center;gap:var(--space-2);
}
.hero-trust span::before{
  content:'●';color:var(--accent);font-size:.5rem;
}
.hero-actions{display:flex;gap:var(--space-4);flex-wrap:wrap}

/* ==========================================================================
   SERVICES
   ========================================================================== */
#servicos{background:var(--white)}
.services-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--space-4);
}
.service-card{
  background:var(--surface);
  border-radius:var(--radius-md);
  overflow:hidden;cursor:pointer;
  border:1px solid var(--border);
  transition:all .3s;
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:var(--mark);
}
.service-card-img-wrap{
  width:100%;height:170px;overflow:hidden;
  background:var(--bg);position:relative;
}
.service-card-img-wrap img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.service-card:hover .service-card-img-wrap img{transform:scale(1.06)}
.service-card-body{padding:var(--space-4)}
.service-card-body h3{
  font-size:1rem;font-weight:600;
  margin-bottom:var(--space-1);color:var(--navy-dark);
}
.service-card-body p{
  font-size:.82rem;color:var(--text-subtle);
  line-height:1.5;margin-bottom:var(--space-3);
}
.service-card-link{
  font-size:.75rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.06em;color:var(--accent);
  transition:color .2s;
}
.service-card:hover .service-card-link{color:var(--mark)}
/* "Ver detalles" siempre en la base de la tarjeta, aunque el texto tenga distinta longitud */
.service-card{display:flex;flex-direction:column}
.service-card .service-card-body{flex:1;display:flex;flex-direction:column}
.service-card .service-card-link{margin-top:auto}
/* ==========================================================================
   RERA — servicio especial (sección propia + submenú)
   ========================================================================== */
.rera-section{background:var(--bg)}
.rera-grid{display:grid;grid-template-columns:220px 1fr 1fr;gap:var(--space-4);align-items:stretch}
.rera-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-6);display:flex;flex-direction:column}
.rera-card h3{font-size:1.05rem;font-weight:600;margin-bottom:var(--space-3);color:var(--navy-dark)}
.rera-card--badge{background:var(--navy-dark);border-color:var(--navy-dark);color:var(--white);align-items:center;justify-content:center;text-align:center;gap:var(--space-1)}
.rera-card--badge svg{width:48px;height:48px;fill:none;stroke:var(--accent);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:var(--space-2)}
.rera-card--badge strong{font-size:1.8rem;font-weight:800;letter-spacing:.04em;color:var(--white)}
.rera-card--badge span{font-size:.8rem;color:rgba(255,255,255,.75);letter-spacing:.04em}
.rera-card--badge a{margin-top:var(--space-4);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.rera-health,.rera-steps{margin:0 0 var(--space-4);padding:0;display:grid;gap:var(--space-3)}
.rera-health{list-style:none}
.rera-health li{font-size:.85rem;line-height:1.55;color:var(--text-subtle);padding-left:var(--space-3);border-left:2px solid var(--accent)}
.rera-steps{padding-left:var(--space-5)}
.rera-steps li{font-size:.85rem;line-height:1.55;color:var(--text-subtle);padding-left:var(--space-1)}
.rera-steps li::marker{color:var(--accent);font-weight:700}
.rera-health strong,.rera-steps strong{color:var(--navy-dark);font-weight:600}
.rera-more{margin-top:auto;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--accent)}
.rera-more:hover{color:var(--mark)}
.rera-actions{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-4);margin-top:var(--space-8)}
.rera-btn-outline{border:1.5px solid var(--navy-dark);color:var(--navy-dark);background:transparent}
.rera-btn-outline:hover{background:var(--navy-dark);color:var(--white)}
.rera-lang{font-size:.85rem;color:var(--text-subtle)}

/* Submenú RERA en la cabecera */
.nav-dropdown{position:relative}
.nav-dropdown-toggle span{font-size:.65rem;margin-left:2px}
.nav-submenu{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  min-width:260px;padding:var(--space-2) 0;margin-top:var(--space-3);
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);
  display:flex;flex-direction:column;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;
}
.nav-submenu::before{content:'';position:absolute;left:0;right:0;top:calc(-1 * var(--space-3));height:var(--space-3)}
.nav-dropdown:hover .nav-submenu,.nav-dropdown:focus-within .nav-submenu{opacity:1;visibility:visible}
.header-nav .nav-submenu a:not(.btn){padding:var(--space-2) var(--space-4);font-size:.85rem;white-space:nowrap}
.header-nav .nav-submenu a:not(.btn)::after{display:none}
.header-nav .nav-submenu a:not(.btn):hover{background:var(--bg);color:var(--navy-dark)}
.header-nav .nav-submenu .nav-submenu-cta{color:var(--accent);font-weight:600;border-top:1px solid var(--border);margin-top:var(--space-1);padding-top:var(--space-3)}

/* ==========================================================================
   ABOUT
   ========================================================================== */
#sobre{background:var(--bg)}
.about-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--space-16);
  align-items:center;
}
.about-text p{
  font-size:1.05rem;color:var(--text-subtle);
  line-height:1.8;margin-bottom:var(--space-4);
}
.about-text p strong{color:var(--text)}
.about-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--space-3);
}
.stat-item{
  background:var(--white);border-radius:var(--radius-md);
  padding:var(--space-6) var(--space-4);text-align:center;
  border:1px solid var(--border);
  transition:all .3s;
}
.stat-item:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-md);
  border-color:var(--mark);
}
.stat-number{
  display:block;font-size:1.75rem;font-weight:800;
  color:var(--accent);line-height:1;margin-bottom:var(--space-1);
}
.stat-label{font-size:.78rem;color:var(--text-subtle);line-height:1.4}

.features-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--space-4);
  margin-top:var(--space-12);
}
.feature-card{
  background:var(--white);border-radius:var(--radius-md);
  padding:var(--space-8) var(--space-6);
  border:1px solid var(--border);
  position:relative;overflow:hidden;
  transition:all .3s;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;
  width:100%;height:3px;background:var(--mark);
  transform:scaleX(0);transform-origin:left;
  transition:transform .35s;
}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
}
.feature-icon{
  width:48px;height:48px;display:flex;
  align-items:center;justify-content:center;
  border-radius:12px;background:var(--mark-light);
  color:var(--mark);margin-bottom:var(--space-4);
  transition:all .3s;
}
.feature-card:hover .feature-icon{
  background:var(--mark);color:var(--white);
}
.feature-icon svg{width:24px;height:24px}
.feature-card h3{font-size:1rem;margin-bottom:var(--space-2);color:var(--navy-dark)}
.feature-card p{font-size:.88rem;color:var(--text-subtle);line-height:1.6}

.about-cta{margin-top:var(--space-12);text-align:center}

/* ==========================================================================
   PROJECTS
   ========================================================================== */
#proyectos{background:var(--white)}
.obres-filtres{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-2);margin-bottom:var(--space-6)}
.obres-chip{
  font:inherit;font-size:.82rem;font-weight:600;cursor:pointer;
  padding:var(--space-2) var(--space-4);border-radius:999px;
  border:1px solid var(--border);background:var(--white);color:var(--navy);
  transition:all .2s;
}
.obres-chip:hover{border-color:var(--mark);color:var(--mark)}
.obres-chip.is-active{background:var(--mark);border-color:var(--mark);color:var(--white)}
.obres-grid{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);
}
.obra[hidden]{display:none}
.obra a{display:block;border-radius:var(--radius-md);overflow:hidden;background:var(--bg);aspect-ratio:4/3}
.obra img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.obra a:hover img,.obra a:focus-visible img{transform:scale(1.05)}
.obres-more-wrap{text-align:center;margin-top:var(--space-6)}
.obres-subtitle{text-align:center;font-size:1.25rem;margin:var(--space-12) 0 var(--space-6)}
.obres-videos{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3)}
.obres-videos video{width:100%;height:auto;aspect-ratio:9/16;object-fit:cover;border-radius:var(--radius-md);background:var(--navy-dark)}

.lightbox{
  position:fixed;inset:0;z-index:1100;background:rgba(8,28,40,.94);
  display:flex;align-items:center;justify-content:center;padding:var(--space-12) var(--space-4);
}
.lightbox[hidden]{display:none}
.lightbox img{max-width:100%;max-height:100%;object-fit:contain;border-radius:var(--radius-sm)}
.lightbox-btn{
  position:absolute;border:0;cursor:pointer;color:var(--white);background:rgba(255,255,255,.12);
  width:48px;height:48px;border-radius:50%;font-size:2rem;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.lightbox-btn:hover{background:rgba(255,255,255,.25)}
.lightbox-close{top:var(--space-4);right:var(--space-4)}
.lightbox-prev{left:var(--space-4);top:50%;transform:translateY(-50%)}
.lightbox-next{right:var(--space-4);top:50%;transform:translateY(-50%)}
.lightbox-count{position:absolute;bottom:var(--space-4);left:0;right:0;text-align:center;color:rgba(255,255,255,.8);font-size:.85rem}

/* ==========================================================================
   TESTIMONIALS
   ========================================================================== */
#testimonios{background:var(--bg)}
.testimonials-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--space-6);
}
.testimonial-card{
  background:var(--white);border-radius:var(--radius-md);
  padding:var(--space-8);border:1px solid var(--border);
  transition:all .3s;
}
.testimonial-card:hover{box-shadow:var(--shadow-md)}
.testimonial-card .quote{
  font-size:.95rem;color:var(--text-subtle);
  line-height:1.7;margin-bottom:var(--space-4);
  font-style:italic;
}
.testimonial-card .quote::before{content:'"';color:var(--accent);font-size:1.2rem}
.testimonial-card .quote::after{content:'"';color:var(--accent);font-size:1.2rem}
.testimonial-card .author{
  font-weight:600;font-size:.88rem;color:var(--text);
}
.testimonial-card .role{
  font-size:.78rem;color:var(--text-subtle);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
#contacto{background:var(--white)}
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--space-16);
  align-items:start;
}
.contact-info h3{
  font-size:1.1rem;margin-bottom:var(--space-4);
}
.contact-info p{
  color:var(--text-subtle);line-height:1.7;margin-bottom:var(--space-4);
}
.contact-details{display:grid;gap:var(--space-4);margin-top:var(--space-6)}
.contact-item{
  display:flex;gap:var(--space-3);align-items:flex-start;
}
.contact-item-icon{
  width:40px;height:40px;display:flex;align-items:center;
  justify-content:center;border-radius:10px;
  background:var(--accent-bg);color:var(--accent);flex-shrink:0;
  font-size:1rem;font-weight:700;
}
.contact-item div{}
.contact-item strong{display:block;font-size:.85rem;color:var(--text);margin-bottom:2px}
.contact-item span{font-size:.88rem;color:var(--text-subtle)}

/* Contact form */
.form-group{margin-bottom:var(--space-4)}
.form-group label{
  display:block;font-size:.8rem;font-weight:600;
  color:var(--text);margin-bottom:var(--space-1);
  text-transform:uppercase;letter-spacing:.06em;
}
.form-control{
  width:100%;padding:var(--space-3);
  font-family:var(--font-sans);font-size:.95rem;
  border:1.5px solid var(--border);border-radius:var(--radius-sm);
  background:var(--bg);color:var(--text);
  transition:border-color .2s,box-shadow .2s;
  outline:none;
}
.form-control:focus{
  border-color:var(--mark);
  box-shadow:0 0 0 3px rgba(10,126,114,.12);
}
textarea.form-control{min-height:120px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}
.form-success{
  display:none;padding:var(--space-4);
  background:var(--mark-light);border-radius:var(--radius-sm);
  color:var(--mark);font-weight:500;text-align:center;
}
.form-success.show{display:block;margin-bottom:var(--space-4)}
.form-alert{padding:var(--space-3) var(--space-4);margin-bottom:var(--space-4);border-radius:var(--radius-sm);background:#fdecea;color:#9b1c1c;font-weight:500}
.form-error{margin:var(--space-1) 0 0;font-size:.82rem;color:#b42318}
.form-control[aria-invalid="true"]{border-color:#b42318}
.form-check{display:flex;gap:var(--space-2);align-items:flex-start}
.form-check input{margin-top:4px;flex:0 0 auto}
.form-check label{text-transform:none;letter-spacing:0;font-weight:400;font-size:.85rem;color:var(--text-subtle)}
.form-check a{color:var(--mark)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.footer-legal{display:flex;flex-wrap:wrap;gap:var(--space-4);justify-content:center;margin-top:var(--space-2)}
.footer-legal a{color:inherit}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer{
  background:var(--navy);color:rgba(255,255,255,.8);
  padding:var(--space-16) 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:var(--space-12);
  padding-bottom:var(--space-12);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer h4{
  font-weight:600;font-size:.85rem;text-transform:uppercase;
  letter-spacing:.08em;color:var(--accent);
  margin-bottom:var(--space-4);
}
.footer p,.footer li{
  font-size:.85rem;line-height:1.7;color:rgba(255,255,255,.6);
}
.footer a{color:var(--mark-light)}
.footer a:hover{color:var(--accent)}
.footer li{margin-bottom:var(--space-2)}
.footer-brand img{height:36px;margin-bottom:var(--space-3)}
.footer-brand p{font-size:.85rem;max-width:300px}
.footer-bottom{
  padding:var(--space-6) 0;
  text-align:center;font-size:.8rem;
  color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.6)}

/* ==========================================================================
   PROCESS (CÓMO TRABAJAMOS)
   ========================================================================== */
#como-trabajamos{background:var(--bg)}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--space-6);
  counter-reset:step;
}
.process-step{
  counter-increment:step;
  text-align:center;padding:var(--space-8) var(--space-4);
  background:var(--white);border-radius:var(--radius-md);
  border:1px solid var(--border);
  transition:all .3s;position:relative;
}
.process-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.process-step::before{
  content:counter(step);
  display:flex;align-items:center;justify-content:center;
  width:44px;height:44px;margin:0 auto var(--space-4);
  border-radius:50%;background:var(--accent-bg);
  color:var(--accent);font-weight:800;font-size:1.15rem;
  transition:all .3s;
}
.process-step:hover::before{background:var(--accent);color:var(--white)}
.process-step h3{font-size:1rem;margin-bottom:var(--space-2)}
.process-step p{font-size:.85rem;color:var(--text-subtle);line-height:1.5}

/* ==========================================================================
   WHATSAPP FLOATING BUTTON
   ========================================================================== */
.whatsapp-btn{
  position:fixed;bottom:var(--space-6);right:var(--space-6);
  z-index:900;width:56px;height:56px;border-radius:50%;
  background:#25d366;color:var(--white);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(37,211,102,.35);
  transition:all .3s;text-decoration:none;
}
.whatsapp-btn:hover{
  transform:scale(1.08);color:var(--white);
  box-shadow:0 6px 24px rgba(37,211,102,.45);
}
.whatsapp-btn svg{width:28px;height:28px;fill:var(--white)}

/* ==========================================================================
   BACK TO TOP
   ========================================================================== */
.back-top{
  position:fixed;bottom:var(--space-6);right:calc(var(--space-6) + 68px);
  z-index:900;width:44px;height:44px;border-radius:50%;
  background:var(--navy-dark);color:var(--white);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:all .3s;text-decoration:none;
  border:none;cursor:pointer;
}
.back-top.visible{opacity:1;visibility:visible;pointer-events:auto}
.back-top:hover{background:var(--navy);color:var(--white);transform:translateY(-2px)}
.back-top svg{width:20px;height:20px;stroke:currentColor;stroke-width:2;fill:none}

/* ==========================================================================
   MODAL
   ========================================================================== */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:2000;
  background:rgba(0,0,0,.5);backdrop-filter:blur(4px);
  align-items:center;justify-content:center;padding:var(--space-6);
}
.modal-overlay.open{display:flex}
.modal{
  background:var(--white);border-radius:var(--radius-lg);
  max-width:700px;width:100%;
  max-height:90vh;overflow-y:auto;
  box-shadow:var(--shadow-xl);position:relative;
  animation:modalIn .3s ease;
}
@keyframes modalIn{
  from{opacity:0;transform:scale(.96) translateY(8px)}
  to{opacity:1;transform:scale(1) translateY(0)}
}
.modal-close{
  position:absolute;top:var(--space-3);right:var(--space-4);
  background:none;border:none;font-size:1.5rem;
  color:var(--text-subtle);cursor:pointer;z-index:1;
  width:36px;height:36px;display:flex;
  align-items:center;justify-content:center;
  border-radius:50%;transition:all .2s;
}
.modal-close:hover{background:var(--bg);color:var(--text)}
.modal img{
  width:100%;height:220px;object-fit:cover;
  border-radius:var(--radius-lg) var(--radius-lg) 0 0;display:block;
}
.modal-body{padding:var(--space-8)}
.modal-body h2{font-size:1.3rem;margin-bottom:var(--space-3)}
.modal-body .intro{
  font-size:.95rem;color:var(--text-subtle);
  line-height:1.7;margin-bottom:var(--space-4);
}
.modal-body h3{
  font-size:.82rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.06em;color:var(--mark);
  margin-bottom:var(--space-3);
}
.modal-list{
  display:grid;grid-template-columns:1fr 1fr;
  gap:var(--space-2);margin-bottom:var(--space-6);
}
.modal-list li{
  font-size:.85rem;color:var(--text-subtle);
  padding:var(--space-2) var(--space-3);
  background:var(--bg);border-radius:var(--radius-sm);
  border-left:3px solid var(--accent);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media(max-width:992px){
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .rera-grid{grid-template-columns:1fr 1fr}
  .rera-card--badge{grid-column:1/-1;flex-direction:row;flex-wrap:wrap;gap:var(--space-3)}
  .rera-card--badge svg,.rera-card--badge a{margin:0}
  .about-grid{grid-template-columns:1fr;gap:var(--space-8)}
  .about-stats{grid-template-columns:repeat(3,1fr)}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .obres-grid,.obres-videos{grid-template-columns:repeat(3,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .testimonials-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:var(--space-8)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%;justify-content:center}
  .hero-trust{flex-direction:column;gap:var(--space-2)}
  .services-grid{grid-template-columns:1fr}
  .rera-grid{grid-template-columns:1fr}
  .rera-actions .btn{width:100%;justify-content:center}
  .about-stats{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .obres-grid,.obres-videos{grid-template-columns:repeat(2,1fr)}
  .lightbox-prev,.lightbox-next{top:auto;bottom:var(--space-4);transform:none}
  .contact-grid{grid-template-columns:1fr;gap:var(--space-8)}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .whatsapp-btn{bottom:var(--space-4);right:var(--space-4);width:50px;height:50px}
  .back-top{display:none}
  .section{padding:var(--space-12) 0}
  .modal-list{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto}
}

/* ==========================================================================
   Botó d'idioma CA | ES (també a /assets/css/tectoing.css)
   ========================================================================== */
.lang-switch{display:inline-flex;align-items:center;border:1.5px solid var(--border);border-radius:999px;padding:2px;background:var(--white);flex:0 0 auto}
.lang-switch a{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:30px;padding:0 10px;border-radius:999px;font-size:.75rem;font-weight:700;letter-spacing:.06em;color:var(--text-subtle);text-decoration:none;transition:background .2s,color .2s}
.lang-switch a:hover{color:var(--navy-dark)}
.lang-switch a[aria-current="true"]{background:var(--navy-dark);color:var(--white)}
.lang-switch a::after{display:none}
.header .container > .lang-switch{margin-left:var(--space-6)}

/* Menú: textos sense salt de línia; hamburguesa fins a 1080px (el català és més llarg) */
.header-nav a{white-space:nowrap}
@media(max-width:1080px){
  .menu-toggle{display:flex}
  .header-nav{
    display:none;position:absolute;top:var(--header-h);
    left:0;right:0;flex-direction:column;
    background:rgba(255,255,255,.98);
    backdrop-filter:blur(12px);
    padding:var(--space-6);gap:var(--space-4);
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-lg);
  }
  .header-nav.open{display:flex}
  .header-nav .btn{width:100%;justify-content:center;margin-top:var(--space-2)}
  .header .container > .header-nav{order:3}
  .header .container > .lang-switch{margin-left:auto;margin-right:var(--space-3)}
  .nav-dropdown{display:flex;flex-direction:column;align-items:center;width:100%}
  .nav-submenu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;border-top:2px solid var(--accent);border-radius:0 0 var(--radius-md) var(--radius-md);background:var(--bg);margin:var(--space-2) 0 0;padding:var(--space-1) 0;min-width:0;width:100%;align-items:center;text-align:center}
  .nav-submenu::before{display:none}
  .header-nav .nav-submenu a:not(.btn){white-space:normal;padding:var(--space-2) var(--space-3)}
}