/* ===========================================================
   MONOLITH STUDIO — Premium decorative stone installations
   =========================================================== */

:root {
  --charcoal: #161616;
  --charcoal-2: #1f1f1f;
  --charcoal-3: #262626;
  --bone: #f2efe9;
  --bone-dim: #cbc7bf;
  --amber: #d99a4e;
  --amber-bright: #e9b066;
  --line: rgba(242, 239, 233, 0.10);
  --line-strong: rgba(242, 239, 233, 0.20);
  --max: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--charcoal);
  color: var(--bone);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Archivo', 'Inter', sans-serif;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 28px; }

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 600;
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  text-transform: uppercase;
}

.section-pad { padding: clamp(72px, 11vw, 150px) 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-family: 'Archivo', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.4s var(--ease);
  white-space: nowrap;
}
.btn-amber { background: var(--amber); color: var(--charcoal); }
.btn-amber:hover { background: var(--amber-bright); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--bone); border-color: var(--line-strong); }
.btn-outline:hover { border-color: var(--bone); background: rgba(242,239,233,0.06); }

/* ===========================================================
   NAV
   =========================================================== */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(18,18,18,0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 12px 28px;
  border-bottom: 1px solid var(--line);
}
.nav-logo img { height: 42px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase;
  font-weight: 500; color: var(--bone-dim); transition: color 0.3s;
}
.nav-links a:hover { color: var(--bone); }
.nav .btn { padding: 11px 22px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--bone); transition: 0.3s; }

/* ===========================================================
   HERO
   =========================================================== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('../assets/photos/01-rgb-rock-counter-HERO.jpeg') center/cover no-repeat;
  transform: scale(1.05);
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(90deg, rgba(12,12,12,0.92) 0%, rgba(12,12,12,0.65) 45%, rgba(12,12,12,0.25) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; padding-top: 70px; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5.3rem);
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero h1 .amber { color: var(--amber); }
.hero p {
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  color: var(--bone-dim);
  max-width: 540px;
  margin-bottom: 38px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.scroll-hint {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  z-index: 2; font-size: 0.68rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--bone-dim); display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-hint::after { content: ''; width: 1px; height: 40px; background: linear-gradient(var(--amber), transparent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:.3;} 50%{opacity:1;} }

/* ===========================================================
   USP STRIP
   =========================================================== */
.usp { background: var(--charcoal-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.usp-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.usp-item { padding: 46px 28px; border-right: 1px solid var(--line); }
.usp-item:last-child { border-right: 0; }
.usp-item .num { font-family: 'Archivo', sans-serif; color: var(--amber); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.2em; margin-bottom: 14px; }
.usp-item h3 { font-size: 1.15rem; text-transform: uppercase; margin-bottom: 8px; }
.usp-item p { font-size: 0.9rem; color: var(--bone-dim); }

/* ===========================================================
   SECTION HEADER
   =========================================================== */
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 54px; flex-wrap: wrap; }
.sec-head p { color: var(--bone-dim); max-width: 420px; font-size: 0.98rem; }

/* ===========================================================
   GALLERY
   =========================================================== */
.gallery { background: var(--charcoal); }
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  font-family: 'Archivo', sans-serif; font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; padding: 10px 22px; background: transparent; color: var(--bone-dim);
  border: 1px solid var(--line-strong); cursor: pointer; transition: all 0.3s;
}
.filter-btn:hover { color: var(--bone); }
.filter-btn.active { background: var(--bone); color: var(--charcoal); border-color: var(--bone); }

.grid {
  display: grid; grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 230px; gap: 14px;
}
.tile {
  position: relative; overflow: hidden; cursor: pointer;
  background: var(--charcoal-3);
}
.tile img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.tile:hover img { transform: scale(1.07); }
.tile::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(12,12,12,0.8), transparent 55%);
  opacity: 0; transition: opacity 0.4s;
}
.tile:hover::after { opacity: 1; }
.tile-label {
  position: absolute; left: 20px; bottom: 18px; z-index: 2;
  opacity: 0; transform: translateY(10px); transition: all 0.4s var(--ease);
}
.tile:hover .tile-label { opacity: 1; transform: translateY(0); }
.tile-label .cat { font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--amber); }
.tile-label h4 { font-size: 1.05rem; text-transform: uppercase; }

/* span helpers */
.s-6 { grid-column: span 6; } .s-4 { grid-column: span 4; } .s-3 { grid-column: span 3; }
.s-8 { grid-column: span 8; }
.r-2 { grid-row: span 2; }
.tile.hide { display: none; }

/* ===========================================================
   SERVICES
   =========================================================== */
.services { background: var(--charcoal-2); border-top: 1px solid var(--line); }
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.svc-card {
  background: var(--charcoal); border: 1px solid var(--line);
  padding: 44px 40px; transition: all 0.4s var(--ease); position: relative; overflow: hidden;
}
.svc-card::before {
  content: ''; position: absolute; left: 0; top: 0; height: 100%; width: 3px;
  background: var(--amber); transform: scaleY(0); transform-origin: top; transition: transform 0.4s var(--ease);
}
.svc-card:hover { border-color: var(--line-strong); transform: translateY(-4px); }
.svc-card:hover::before { transform: scaleY(1); }
.svc-card .idx { font-family: 'Archivo', sans-serif; color: var(--amber); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.2em; margin-bottom: 18px; }
.svc-card h3 { font-size: 1.5rem; text-transform: uppercase; margin-bottom: 14px; }
.svc-card p { color: var(--bone-dim); font-size: 0.95rem; }

/* ===========================================================
   PROCESS
   =========================================================== */
.process { background: var(--charcoal); }
.proc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; counter-reset: step; }
.proc-step { padding: 40px 36px; border-left: 1px solid var(--line); position: relative; }
.proc-step:first-child { border-left: 0; padding-left: 0; }
.proc-step .step-num {
  font-family: 'Archivo', sans-serif; font-size: 3.4rem; font-weight: 800;
  color: transparent; -webkit-text-stroke: 1px var(--line-strong); line-height: 1; margin-bottom: 22px;
}
.proc-step h3 { font-size: 1.4rem; text-transform: uppercase; margin-bottom: 12px; }
.proc-step p { color: var(--bone-dim); font-size: 0.95rem; }

/* ===========================================================
   CONTACT
   =========================================================== */
.contact { background: var(--charcoal-2); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; }
.contact-info h2 { font-size: clamp(1.9rem, 4vw, 2.8rem); text-transform: uppercase; margin-bottom: 22px; }
.contact-info p { color: var(--bone-dim); margin-bottom: 36px; max-width: 400px; }
.contact-line { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-top: 1px solid var(--line); }
.contact-line:last-of-type { border-bottom: 1px solid var(--line); }
.contact-line .ci-label { font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--amber); width: 70px; }
.contact-line a, .contact-line span { font-size: 1.05rem; font-weight: 500; }
.contact-line a:hover { color: var(--amber); }

form { display: grid; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--bone-dim); }
input, select, textarea {
  background: var(--charcoal); border: 1px solid var(--line-strong); color: var(--bone);
  padding: 14px 16px; font-family: inherit; font-size: 0.95rem; transition: border-color 0.3s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--amber); }
textarea { resize: vertical; min-height: 120px; }
select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23d99a4e' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.hp { position: absolute; left: -9999px; }
.form-note { font-size: 0.8rem; color: var(--bone-dim); }
.form-success {
  display: none; padding: 22px; border: 1px solid var(--amber); background: rgba(217,154,78,0.08);
  color: var(--bone); font-size: 0.95rem;
}
.form-success.show { display: block; }

/* ===========================================================
   FOOTER
   =========================================================== */
.footer { background: var(--charcoal); border-top: 1px solid var(--line); padding: 50px 0 36px; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; margin-bottom: 34px; }
.footer-logo img { height: 46px; }
.footer-links { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-links a { font-size: 0.82rem; color: var(--bone-dim); letter-spacing: 0.06em; }
.footer-links a:hover { color: var(--bone); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 26px; border-top: 1px solid var(--line); }
.footer-bottom p { font-size: 0.78rem; color: var(--bone-dim); }

/* ===========================================================
   WHATSAPP FLOAT
   =========================================================== */
.wa-float { position: fixed; right: 24px; bottom: 24px; z-index: 200; }
.wa-btn {
  width: 60px; height: 60px; border-radius: 50%; background: #25d366;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4); border: 0; transition: transform 0.3s;
}
.wa-btn:hover { transform: scale(1.08); }
.wa-btn svg { width: 32px; height: 32px; fill: #fff; }
.wa-popup {
  position: absolute; right: 0; bottom: 76px; width: 290px;
  background: var(--charcoal-3); border: 1px solid var(--line-strong);
  padding: 18px; opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all 0.35s var(--ease); box-shadow: 0 14px 50px rgba(0,0,0,0.5);
}
.wa-popup.open { opacity: 1; visibility: visible; transform: translateY(0); }
.wa-popup .wa-head { font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); margin-bottom: 4px; }
.wa-popup .wa-sub { font-size: 0.82rem; color: var(--bone-dim); margin-bottom: 14px; }
.wa-opt {
  display: block; padding: 12px 14px; margin-bottom: 8px; background: var(--charcoal);
  border: 1px solid var(--line); font-size: 0.86rem; color: var(--bone); transition: all 0.3s;
}
.wa-opt:last-child { margin-bottom: 0; }
.wa-opt:hover { border-color: #25d366; color: #fff; }

/* ===========================================================
   REVEAL ANIMATION
   =========================================================== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width: 980px) {
  .usp-grid { grid-template-columns: repeat(2, 1fr); }
  .usp-item:nth-child(2) { border-right: 0; }
  .usp-item { border-bottom: 1px solid var(--line); }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .proc-grid { grid-template-columns: 1fr; }
  .proc-step { border-left: 0; border-top: 1px solid var(--line); padding: 30px 0; }
  .proc-step:first-child { border-top: 0; padding-top: 0; }
}
@media (max-width: 760px) {
  .nav-links { position: fixed; top: 0; right: 0; height: 100vh; width: 78%; max-width: 320px;
    flex-direction: column; align-items: flex-start; justify-content: center; gap: 26px;
    background: var(--charcoal-2); padding: 0 36px; transform: translateX(100%);
    transition: transform 0.45s var(--ease); border-left: 1px solid var(--line); }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; z-index: 101; }
  .svc-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .s-6,.s-4,.s-3,.s-8 { grid-column: span 2; }
  .r-2 { grid-row: span 1; }
  .row-2 { grid-template-columns: 1fr; }
  .hero-overlay { background: linear-gradient(180deg, rgba(12,12,12,0.6), rgba(12,12,12,0.85)); }
}