/* ================================================
   ARTEINFERRO — GLOBAL STYLESHEET
   ================================================ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=DM+Sans:wght@300;400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,600;1,300&display=swap');

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#1a1614;
  --cream:#f5f0e8;
  --rust:#8b4513;
  --copper:#b87333;
  --warm-gray:#a09080;
  --light-warm:#e8e0d4;
  --gold:#c9a94e;
  --dark-iron:#2c2420;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'DM Sans',sans-serif;color:var(--ink);background:var(--cream);overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none}

/* ====== NAVIGATION ====== */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:1.4rem 4%;display:flex;justify-content:space-between;align-items:center;transition:background .4s,backdrop-filter .4s}
nav.scrolled{background:rgba(26,22,20,.94);backdrop-filter:blur(14px)}
.nav-logo{font-family:'Playfair Display',serif;font-size:1.4rem;font-weight:700;color:var(--cream);letter-spacing:.04em}
.nav-logo span{color:var(--copper);font-style:italic}
.nav-links{display:flex;gap:2.4rem;list-style:none;align-items:center}
.nav-links a{color:var(--cream);font-size:.8rem;font-weight:400;letter-spacing:.12em;text-transform:uppercase;opacity:.7;transition:opacity .3s}
.nav-links a:hover,.nav-links a.active{opacity:1}
.nav-cta{border:1px solid var(--copper);color:var(--copper)!important;padding:.5rem 1.5rem;opacity:1!important;transition:background .3s,color .3s}
.nav-cta:hover{background:var(--copper);color:var(--cream)!important}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;z-index:101}
.hamburger span{width:24px;height:2px;background:var(--cream);transition:transform .3s,opacity .3s}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-menu{display:none;position:fixed;inset:0;background:rgba(26,22,20,.97);z-index:99;flex-direction:column;justify-content:center;align-items:center;gap:2rem}
.mobile-menu.open{display:flex}
.mobile-menu a{color:var(--cream);font-size:1.1rem;letter-spacing:.15em;text-transform:uppercase;opacity:.8;transition:opacity .3s}
.mobile-menu a:hover{opacity:1;color:var(--copper)}

/* ====== BUTTONS ====== */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.9rem 2.2rem;font-size:.82rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;transition:all .35s ease;cursor:pointer;border:none;font-family:'DM Sans',sans-serif}
.btn-primary{background:var(--copper);color:var(--cream)}
.btn-primary:hover{background:var(--rust);transform:translateY(-2px);box-shadow:0 8px 30px rgba(184,115,51,.3)}
.btn-ghost{border:1px solid rgba(245,240,232,.3);color:var(--cream);background:transparent}
.btn-ghost:hover{border-color:var(--copper);color:var(--copper)}
.btn-outline{border:1px solid var(--copper);color:var(--copper);background:transparent}
.btn-outline:hover{background:var(--copper);color:var(--cream)}

/* ====== HERO (homepage) ====== */
.hero{position:relative;height:100vh;min-height:700px;display:flex;align-items:flex-end;padding:0 4% 6rem;overflow:hidden;background:var(--dark-iron)}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,22,20,.15) 0%,rgba(26,22,20,.65) 55%,rgba(26,22,20,.95) 100%);z-index:1}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 120% 80% at 70% 30%,rgba(184,115,51,.15),transparent),radial-gradient(ellipse 80% 60% at 20% 70%,rgba(139,69,19,.1),transparent);background-color:var(--dark-iron)}
.hero-content{position:relative;z-index:2;max-width:820px}
.hero-tag{font-size:.75rem;letter-spacing:.25em;text-transform:uppercase;color:var(--copper);margin-bottom:1.5rem;font-weight:500}
.hero h1{font-family:'Playfair Display',serif;font-size:clamp(3rem,7vw,5.5rem);font-weight:900;color:var(--cream);line-height:1.05;margin-bottom:1.5rem}
.hero h1 em{font-style:italic;color:var(--copper);font-weight:400}
.hero p{font-family:'Cormorant Garamond',serif;font-size:clamp(1.15rem,2vw,1.5rem);color:var(--warm-gray);line-height:1.6;max-width:560px;margin-bottom:2.5rem;font-weight:300}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap}
.hero-scroll{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:.5rem;color:var(--warm-gray);font-size:.7rem;letter-spacing:.15em;text-transform:uppercase}
.hero-scroll span{width:1px;height:40px;background:linear-gradient(180deg,var(--copper),transparent);animation:scrollPulse 2s ease infinite}
@keyframes scrollPulse{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ====== PAGE HERO (internal) ====== */
.page-hero{position:relative;padding:10rem 4% 5rem;background:var(--dark-iron);overflow:hidden;text-align:center}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 80%,rgba(184,115,51,.1),transparent 70%)}
.page-hero .hero-tag{font-size:.72rem;letter-spacing:.25em;text-transform:uppercase;color:var(--copper);margin-bottom:1rem;font-weight:500;position:relative}
.page-hero h1{font-family:'Playfair Display',serif;font-size:clamp(2.4rem,5vw,4rem);font-weight:900;color:var(--cream);line-height:1.1;position:relative;margin-bottom:1rem}
.page-hero h1 em{font-style:italic;color:var(--copper);font-weight:400}
.page-hero p{font-family:'Cormorant Garamond',serif;font-size:1.2rem;color:var(--warm-gray);max-width:560px;margin:0 auto;line-height:1.6;position:relative;font-weight:300}

/* ====== SECTIONS ====== */
section{padding:6rem 4%}
.section-tag{font-size:.7rem;letter-spacing:.3em;text-transform:uppercase;color:var(--copper);font-weight:500;margin-bottom:1rem}
.section-title{font-family:'Playfair Display',serif;font-size:clamp(2rem,4vw,3rem);font-weight:700;line-height:1.15;margin-bottom:1.2rem}
.section-title span{color:var(--copper)}
.section-subtitle{font-family:'Cormorant Garamond',serif;font-size:1.1rem;color:var(--warm-gray);line-height:1.7;max-width:600px;font-weight:300}
.container{max-width:1240px;margin:0 auto}

/* ====== INTRO STRIP ====== */
.intro-strip{display:grid;grid-template-columns:1fr 1fr 1fr;background:var(--dark-iron)}
.intro-stat{padding:3.2rem 2.5rem;border-right:1px solid rgba(245,240,232,.07);text-align:center}
.intro-stat:last-child{border:none}
.intro-stat .num{font-family:'Playfair Display',serif;font-size:2.8rem;font-weight:900;color:var(--copper);display:block;margin-bottom:.25rem}
.intro-stat .label{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--warm-gray)}

/* ====== ABOUT ====== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:5rem;align-items:center}
.about-visual{position:relative;aspect-ratio:4/5;background:var(--dark-iron);overflow:hidden}
.about-visual::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(184,115,51,.18),transparent 50%),radial-gradient(circle at 30% 70%,rgba(201,169,78,.12),transparent 60%);z-index:1}
.about-visual::after{content:'\2726';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:5.5rem;color:var(--copper);opacity:.15;z-index:2}
.about-badge{position:absolute;bottom:2rem;left:2rem;background:var(--copper);color:var(--cream);padding:.9rem 1.4rem;z-index:3;font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;font-weight:600}
.about-text p{color:#5a5048;line-height:1.85;margin-bottom:1.4rem;font-size:.94rem}
.about-text p.lead::first-letter{font-family:'Playfair Display',serif;font-size:3.4rem;float:left;line-height:.8;margin-right:.5rem;color:var(--copper);font-weight:700}
.signature{font-family:'Cormorant Garamond',serif;font-style:italic;font-size:1.25rem;color:var(--copper);margin-top:2rem}

/* ====== VALUES ====== */
.values-row{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-top:4rem}
.value-card{background:var(--dark-iron);padding:2.5rem 2rem;position:relative;overflow:hidden}
.value-card::before{content:'';position:absolute;top:0;left:0;width:60px;height:2px;background:var(--copper)}
.value-card h4{font-family:'Playfair Display',serif;font-size:1.1rem;color:var(--cream);margin-bottom:.8rem}
.value-card p{font-size:.85rem;color:var(--warm-gray);line-height:1.65}

/* ====== SERVICES GRID ====== */
.services-section{background:var(--dark-iron);color:var(--cream)}
.services-section .section-subtitle{color:var(--warm-gray)}
.services-header{text-align:center;max-width:680px;margin:0 auto 4rem}
.services-header .section-subtitle{margin:0 auto}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;max-width:1240px;margin:0 auto}
.service-card{background:rgba(245,240,232,.035);padding:2.8rem 2.2rem;position:relative;overflow:hidden;transition:background .4s}
.service-card:hover{background:rgba(184,115,51,.07)}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:2px;background:linear-gradient(90deg,transparent,var(--copper),transparent);opacity:0;transition:opacity .4s}
.service-card:hover::before{opacity:1}
.service-icon{font-size:2rem;margin-bottom:1.4rem;display:block}
.service-card h3{font-family:'Playfair Display',serif;font-size:1.2rem;font-weight:700;margin-bottom:.8rem}
.service-card p{font-size:.85rem;color:var(--warm-gray);line-height:1.7}

/* ====== SERVICE DETAIL ====== */
.service-detail{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;padding:4rem 0;border-bottom:1px solid var(--light-warm)}
.service-detail:last-child{border:none}
.service-detail.reverse{direction:rtl}
.service-detail.reverse > *{direction:ltr}
.service-detail-img{aspect-ratio:4/3;background:var(--dark-iron);position:relative;overflow:hidden}
.service-detail-img::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(184,115,51,.12),transparent)}
.service-detail-img .deco{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:4rem;color:var(--copper);opacity:.12}
.service-detail-text h3{font-family:'Playfair Display',serif;font-size:1.6rem;margin-bottom:1rem;font-weight:700}
.service-detail-text p{font-size:.92rem;color:#5a5048;line-height:1.8;margin-bottom:1rem}
.service-detail-text ul{list-style:none;margin-top:1.5rem}
.service-detail-text ul li{position:relative;padding-left:1.4rem;margin-bottom:.7rem;font-size:.88rem;color:#5a5048}
.service-detail-text ul li::before{content:'\2014';position:absolute;left:0;color:var(--copper);font-weight:700}

/* ====== PORTFOLIO ====== */
.portfolio-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:3rem;flex-wrap:wrap;gap:1.5rem}
.portfolio-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:auto;gap:1rem}
.port-item{position:relative;overflow:hidden;background:var(--dark-iron);cursor:pointer;min-height:240px}
.port-item::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(26,22,20,.85));transition:opacity .4s}
.port-item:hover::after{background:linear-gradient(180deg,rgba(184,115,51,.08) 0%,rgba(26,22,20,.9) 65%)}
.port-inner{position:absolute;bottom:0;left:0;right:0;padding:1.8rem;z-index:2;transform:translateY(8px);opacity:0;transition:all .4s}
.port-item:hover .port-inner{transform:translateY(0);opacity:1}
.port-inner h4{font-family:'Playfair Display',serif;font-size:1.15rem;color:var(--cream);margin-bottom:.25rem}
.port-inner span{font-size:.72rem;color:var(--copper);letter-spacing:.1em;text-transform:uppercase}
.port-deco{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:3.5rem;opacity:.08;color:var(--copper);z-index:1}
.p1{grid-column:1/8;aspect-ratio:16/9;background:linear-gradient(135deg,#2c2420,#3a302a)}
.p2{grid-column:8/13;background:linear-gradient(135deg,#342a24,#2a2220)}
.p3{grid-column:1/5;aspect-ratio:1;background:linear-gradient(135deg,#38302a,#241e1a)}
.p4{grid-column:5/13;background:linear-gradient(135deg,#302824,#2c2420)}
.p5{grid-column:1/7;aspect-ratio:4/3;background:linear-gradient(135deg,#2a2420,#352c26)}
.p6{grid-column:7/13;aspect-ratio:4/3;background:linear-gradient(135deg,#30281e,#28201c)}

/* ====== PROCESS ====== */
.process-section{background:var(--light-warm)}
.process-header{text-align:center;max-width:600px;margin:0 auto 4rem}
.process-header .section-subtitle{margin:0 auto}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;max-width:1200px;margin:0 auto}
.step{text-align:center;position:relative}
.step::after{content:'';position:absolute;top:2.2rem;left:60%;width:calc(100% - 20%);height:1px;background:var(--copper);opacity:.25}
.step:last-child::after{display:none}
.step-num{font-family:'Playfair Display',serif;font-size:2.4rem;font-weight:900;color:var(--copper);opacity:.45;margin-bottom:.7rem}
.step h4{font-family:'Playfair Display',serif;font-size:1rem;margin-bottom:.5rem;font-weight:700}
.step p{font-size:.83rem;color:var(--warm-gray);line-height:1.6}

/* ====== TESTIMONIAL ====== */
.testimonial{background:var(--dark-iron);color:var(--cream);text-align:center;padding:5.5rem 4%}
.testimonial blockquote{font-family:'Cormorant Garamond',serif;font-size:clamp(1.3rem,2.8vw,2rem);font-weight:300;font-style:italic;max-width:780px;margin:0 auto 1.8rem;line-height:1.5;color:var(--light-warm)}
.testimonial blockquote::before{content:'\201C';display:block;font-family:'Playfair Display',serif;font-size:4.5rem;color:var(--copper);opacity:.35;line-height:.6;margin-bottom:1rem}
.testimonial cite{font-style:normal;font-family:'DM Sans',sans-serif;font-size:.78rem;letter-spacing:.15em;text-transform:uppercase;color:var(--copper)}
.testimonials-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:3rem}
.testimonial-card{background:rgba(245,240,232,.04);padding:2.5rem;text-align:left}
.testimonial-card blockquote{font-size:1.1rem;text-align:left;margin-bottom:1.2rem}
.testimonial-card blockquote::before{font-size:3rem;margin-bottom:.5rem}
.testimonial-card cite{font-size:.72rem}

/* ====== CTA ====== */
.cta-section{text-align:center;position:relative}
.cta-section::before{content:'';position:absolute;top:0;left:10%;right:10%;height:1px;background:linear-gradient(90deg,transparent,var(--copper),transparent);opacity:.25}
.cta-contact{display:flex;justify-content:center;gap:3rem;margin-top:2.5rem;flex-wrap:wrap}
.cta-item{font-size:.85rem;color:var(--warm-gray)}
.cta-item strong{display:block;color:var(--ink);font-weight:600;margin-bottom:.2rem}

/* ====== CONTACT ====== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;max-width:1100px;margin:0 auto}
.contact-info h3{font-family:'Playfair Display',serif;font-size:1.5rem;margin-bottom:1.5rem}
.contact-info-item{margin-bottom:2rem}
.contact-info-item .label{font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--copper);font-weight:600;margin-bottom:.4rem}
.contact-info-item p{font-size:.95rem;color:#5a5048;line-height:1.6}
.contact-form label{display:block;font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:var(--warm-gray);margin-bottom:.5rem;font-weight:500}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:.9rem 1rem;border:1px solid var(--light-warm);background:transparent;font-family:'DM Sans',sans-serif;font-size:.9rem;color:var(--ink);transition:border-color .3s;margin-bottom:1.5rem;outline:none}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{border-color:var(--copper)}
.contact-form textarea{resize:vertical;min-height:140px}
.map-placeholder{margin-top:3rem;aspect-ratio:16/7;background:var(--dark-iron);display:flex;align-items:center;justify-content:center}
.map-placeholder span{color:var(--warm-gray);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase}

/* ====== FOOTER ====== */
footer{background:var(--ink);color:var(--cream);padding:4rem 4% 2rem}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;max-width:1240px;margin:0 auto 3rem}
.footer-brand{font-family:'Playfair Display',serif;font-size:1.4rem;font-weight:700;margin-bottom:1rem}
.footer-brand span{color:var(--copper);font-style:italic}
.footer-desc{font-size:.83rem;color:var(--warm-gray);line-height:1.7;max-width:300px}
.footer-col h5{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--copper);margin-bottom:1.1rem;font-weight:600}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:.55rem}
.footer-col a{color:var(--warm-gray);font-size:.85rem;transition:color .3s}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{border-top:1px solid rgba(245,240,232,.07);padding-top:1.8rem;display:flex;justify-content:space-between;max-width:1240px;margin:0 auto;font-size:.73rem;color:var(--warm-gray)}
.footer-bottom a{color:var(--copper)}

/* ====== ANIMATIONS ====== */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ====== RESPONSIVE ====== */
@media(max-width:900px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .about-grid{grid-template-columns:1fr;gap:3rem}
  .about-visual{aspect-ratio:16/9}
  .services-grid{grid-template-columns:1fr}
  .portfolio-grid{grid-template-columns:1fr}
  .portfolio-grid .port-item{grid-column:auto!important;aspect-ratio:16/9!important}
  .portfolio-grid .port-item .port-inner{opacity:1;transform:none}
  .process-steps{grid-template-columns:1fr 1fr;gap:2.5rem}
  .step::after{display:none}
  .intro-strip{grid-template-columns:1fr}
  .intro-stat{border-right:none;border-bottom:1px solid rgba(245,240,232,.07)}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;gap:.5rem;text-align:center}
  .contact-grid{grid-template-columns:1fr}
  .service-detail{grid-template-columns:1fr}
  .service-detail.reverse{direction:ltr}
  .values-row{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
}
@media(max-width:600px){
  .process-steps{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .cta-contact{flex-direction:column;align-items:center}
}