/* ============================================================
   SOLA HOLDING LLC — Landing Page
   Dark tech / enterprise infrastructure theme
   ============================================================ */

:root{
  --bg: #050b17;
  --bg-alt: #091029;
  --surface: #0d1526;
  --surface-2: #10162400;
  --border: rgba(212,175,106,0.14);
  --border-strong: rgba(212,175,106,0.28);
  --text: #f2efe7;
  --text-dim: #a8b0c2;
  --text-faint: #6b7489;
  --accent: #d4af6a;
  --accent-2: #f0d9a8;
  --accent-soft: rgba(212,175,106,0.14);
  --gradient: linear-gradient(120deg, #f0d9a8 0%, #d4af6a 45%, #a97c34 100%);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1180px;
  --font-head: 'Space Grotesk', 'Inter', sans-serif;
  --font-serif: 'Playfair Display', 'Space Grotesk', serif;
  --font-body: 'Inter', sans-serif;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1,h2,h3,h4{
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
p{ margin: 0 0 1em; color: var(--text-dim); }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
img{ max-width:100%; display:block; }
.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* subtle grain overlay for premium texture */
.noise-overlay{
  position: fixed; inset:0; z-index: 999; pointer-events:none;
  opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Header ---------- */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 500;
  padding: 20px 0;
  transition: background .35s ease, padding .35s ease, border-color .35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled{
  padding: 12px 0;
  background: rgba(5,11,23,0.85);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:38px; height:38px; border-radius:9px;
  display:flex; align-items:center; justify-content:center;
  background: #050b17;
  flex-shrink:0; overflow:hidden;
  box-shadow: 0 0 0 1px var(--border-strong);
}
.brand-mark img{ width:100%; height:100%; object-fit:cover; }
.brand-text{
  font-family: var(--font-serif); font-weight:600; letter-spacing:.04em;
  font-size:16.5px; color: var(--text);
}
.brand-text em{ font-style:normal; color: var(--accent); font-weight:500; }

.main-nav{ display:flex; align-items:center; gap:34px; }
.main-nav a{
  font-size:14px; color: var(--text-dim); font-weight:500;
  transition: color .2s ease; position:relative;
}
.main-nav a:hover{ color: var(--text); }
.main-nav a.nav-cta{
  color:#04060b; background: var(--gradient);
  padding:10px 20px; border-radius:999px; font-weight:600;
}
.main-nav a.nav-cta:hover{ color:#04060b; filter:brightness(1.08); }

.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px;
}
.nav-toggle span{ width:22px; height:2px; background:var(--text); border-radius:2px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 14px 28px; border-radius: 999px; font-weight:600; font-size:14.5px;
  border:1px solid transparent; cursor:pointer; transition: all .25s ease;
  font-family: var(--font-body);
}
.btn-primary{ background: var(--gradient); color:#04060b; }
.btn-primary:hover{ filter:brightness(1.1); transform: translateY(-2px); }
.btn-ghost{ background: rgba(255,255,255,0.04); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover{ background: rgba(255,255,255,0.08); border-color: var(--accent); }
.btn-block{ width:100%; }

/* ---------- Eyebrow / section head ---------- */
.eyebrow{
  text-transform: uppercase; letter-spacing:.14em; font-size:12.5px;
  font-weight:600; color: var(--accent); margin-bottom:14px;
}
.section{ padding: 120px 0; position:relative; }
.section-alt{ background: var(--bg-alt); }
.section-head{ max-width: 720px; margin-bottom: 56px; }
.section-head h2{ font-size: clamp(28px, 4vw, 42px); font-family: var(--font-serif); }
.section-sub{ font-size:16px; margin-top:16px; }
.text-gradient{
  background: var(--gradient); -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* ---------- Hero ---------- */
.hero{
  position:relative; min-height: 100vh; display:flex; align-items:center;
  overflow:hidden; padding-top: 90px;
}
.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-bg img{
  width:100%; height:100%; object-fit:cover; object-position: 20% center;
  filter: saturate(0.9);
}
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(100deg, rgba(5,11,23,0.98) 20%, rgba(5,11,23,0.88) 45%, rgba(5,11,23,0.55) 70%, rgba(5,11,23,0.35) 100%),
    linear-gradient(0deg, rgba(5,11,23,1) 0%, rgba(5,11,23,0) 22%);
}
.hero-grid{
  position:absolute; inset:0;
  background-image: linear-gradient(rgba(212,175,106,0.07) 1px, transparent 1px), linear-gradient(90deg, rgba(212,175,106,0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 60% at 70% 40%, black, transparent);
}
.hero-content{ position:relative; z-index:1; max-width: 760px; }
.hero-content h1{ font-size: clamp(38px, 5.6vw, 64px); margin-bottom:22px; font-family: var(--font-serif); }
.hero-lead{ font-size:17.5px; max-width:600px; margin-bottom:28px; }

.pill-row{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom:36px; }
.pill{
  font-size:12.5px; letter-spacing:.06em; text-transform:uppercase; font-weight:600;
  padding:9px 18px; border-radius:999px; border:1px solid var(--border-strong);
  color: var(--text-faint);
}
.pill-active{ background: var(--accent-soft); border-color: rgba(212,175,106,0.5); color: var(--accent); }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.scroll-cue{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%); z-index:1;
  width:26px; height:42px; border:2px solid var(--border-strong); border-radius:20px;
}
.scroll-cue span{
  display:block; width:4px; height:8px; background:var(--accent); border-radius:2px;
  margin: 7px auto 0; animation: cue 1.8s infinite;
}
@keyframes cue{ 0%{ opacity:1; transform:translateY(0);} 70%{opacity:0; transform:translateY(14px);} 100%{opacity:0;} }

/* ---------- About / Pillars ---------- */
.about-grid{ display:grid; grid-template-columns: 0.85fr 1.15fr; gap:64px; align-items:start; }
.about-lead{ font-size:18px; color:var(--text); }
.pillar-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.pillar-card{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding:26px; transition: border-color .25s ease, transform .25s ease;
}
.pillar-card:hover{ border-color: var(--border-strong); transform: translateY(-4px); }
.pillar-card h3{ font-size:17px; margin-bottom:8px; }
.pillar-card p{ font-size:14px; margin:0; }
.pillar-icon{ width:38px; height:38px; margin-bottom:16px; color: var(--accent); }

/* ---------- Services ---------- */
.service-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.service-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0));
  border:1px solid var(--border); border-radius: var(--radius); padding:30px 26px;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.service-card:hover{
  transform: translateY(-6px); border-color: rgba(212,175,106,0.4);
  box-shadow: 0 20px 40px -20px rgba(212,175,106,0.25);
}
.service-icon{ width:44px; height:44px; margin-bottom:20px; color: var(--accent); }
.service-card h3{ font-size:18px; margin-bottom:16px; }
.service-card ul li{
  font-size:14px; color:var(--text-dim); padding-left:18px; position:relative; margin-bottom:10px;
}
.service-card ul li::before{
  content:""; position:absolute; left:0; top:8px; width:6px; height:6px; border-radius:50%;
  background: var(--gradient);
}

/* ---------- Market ---------- */
.market-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.market-card{
  border-top:1px solid var(--border-strong); padding-top:22px;
}
.market-num{
  font-family: var(--font-head); font-size:14px; font-weight:700; color: var(--accent);
  display:block; margin-bottom:14px;
}
.market-card h3{ font-size:18px; margin-bottom:10px; }
.market-card p{ font-size:14px; }

/* ---------- Vision / strategy split ---------- */
.vision-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:70px; }
.vision-subhead{ font-size:14px; text-transform:uppercase; letter-spacing:.1em; color:var(--text-faint); margin-bottom:20px; }
.capability-list{ display:flex; flex-direction:column; gap:0; }
.capability-item{
  padding:20px 0; border-bottom:1px solid var(--border);
}
.capability-item:first-of-type{ padding-top:0; }
.capability-item h4{ font-size:16px; margin-bottom:6px; color:var(--text); }
.capability-item p{ font-size:14px; margin:0; }

/* ---------- Business model flow ---------- */
.model-flow{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px;
  margin-bottom:36px;
}
.model-step{
  flex:1; min-width:140px; text-align:center; padding:26px 16px; position:relative;
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-head); font-weight:600; font-size:16px;
}
.model-step span{
  display:block; font-size:12px; color: var(--accent); font-weight:700; margin-bottom:10px; letter-spacing:.08em;
}
.model-flow .model-step:not(:last-child)::after{
  content:"→"; position:absolute; right:-26px; top:50%; transform:translateY(-50%);
  color: var(--text-faint); font-size:18px; display:none;
}
@media(min-width: 900px){
  .model-flow .model-step:not(:last-child)::after{ display:block; }
}
.model-note{ max-width:760px; font-size:15px; }

/* ---------- Partners ---------- */
.partner-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.partner-card{
  padding:28px; border:1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); transition: border-color .25s ease, transform .25s ease;
}
.partner-card:hover{ border-color: var(--border-strong); transform: translateY(-4px); }
.partner-card h3{ font-size:17px; margin-bottom:8px; font-family: var(--font-head); }
.partner-card p{ font-size:14px; margin:0; }

/* ---------- Advantages ---------- */
.advantage-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.advantage-card{
  padding:30px; border-radius: var(--radius); border:1px solid var(--border);
  background: radial-gradient(circle at top left, rgba(169,124,52,0.10), transparent 60%);
}
.advantage-icon{ width:40px; height:40px; margin-bottom:18px; color: var(--accent-2); }
.advantage-card h3{ font-size:17px; margin-bottom:10px; }
.advantage-card p{ font-size:14px; margin:0; }

/* ---------- Industries ---------- */
.industry-grid{ display:flex; flex-wrap:wrap; gap:12px; }
.industry-pill{
  padding:13px 22px; border-radius:999px; border:1px solid var(--border-strong);
  font-size:14px; color: var(--text); background: var(--surface);
  transition: border-color .2s ease, color .2s ease;
}
.industry-pill:hover{ border-color: var(--accent); color: var(--accent); }

/* ---------- Mission ---------- */
.mission-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.mission-card{
  padding:28px 24px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(212,175,106,0.08), rgba(169,124,52,0.05));
  border:1px solid var(--border);
}
.mission-card h3{ font-size:16.5px; margin-bottom:10px; }
.mission-card p{ font-size:14px; margin:0; }

/* ---------- CTA / Contact ---------- */
.cta-section{ position:relative; padding: 140px 0; overflow:hidden; }
.cta-bg{ position:absolute; inset:0; z-index:0; }
.cta-bg img{ width:100%; height:100%; object-fit:cover; object-position: center 30%; }
.cta-scrim{
  position:absolute; inset:0;
  background: linear-gradient(100deg, rgba(5,11,23,0.97) 30%, rgba(5,11,23,0.75) 60%, rgba(5,11,23,0.55) 100%);
}
.cta-inner{ position:relative; z-index:1; display:grid; grid-template-columns: 1.1fr 0.9fr; gap:60px; align-items:center; }
.cta-text h2{ font-size: clamp(26px, 3.4vw, 36px); font-family: var(--font-serif); }
.cta-tagline{ font-size:17px; color: var(--text); font-weight:600; letter-spacing:.02em; }
.cta-note{ font-size:14.5px; max-width:460px; }

.contact-form{
  background: rgba(10,13,22,0.75); backdrop-filter: blur(18px);
  border:1px solid var(--border-strong); border-radius: var(--radius);
  padding: 34px; display:flex; flex-direction:column; gap:14px;
}
.contact-form h3{ font-size:19px; margin-bottom:4px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.contact-form input, .contact-form textarea{
  width:100%; background: rgba(255,255,255,0.03); border:1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding:13px 16px; color: var(--text); font-family: var(--font-body);
  font-size:14px; resize: vertical;
}
.contact-form input::placeholder, .contact-form textarea::placeholder{ color: var(--text-faint); }
.contact-form input:focus, .contact-form textarea:focus{
  outline:none; border-color: var(--accent); background: rgba(255,255,255,0.05);
}
.form-status{ font-size:13.5px; min-height:18px; color: var(--accent); margin:0; }

/* ---------- Footer ---------- */
.site-footer{ border-top:1px solid var(--border); padding: 40px 0; background: var(--bg); }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px; }
.brand-footer .brand-text{ font-size:14px; }
.footer-nav{ display:flex; gap:24px; flex-wrap:wrap; }
.footer-nav a{ font-size:13.5px; color: var(--text-faint); }
.footer-nav a:hover{ color: var(--text); }
.footer-copy{ font-size:13px; color: var(--text-faint); margin:0; }

/* ---------- Reveal animation ---------- */
.reveal{ opacity:0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media(max-width: 1000px){
  .about-grid, .vision-grid, .cta-inner{ grid-template-columns:1fr; gap:36px; }
  .service-grid{ grid-template-columns:repeat(2,1fr); }
  .market-grid{ grid-template-columns:repeat(2,1fr); }
  .partner-grid{ grid-template-columns:repeat(2,1fr); }
  .advantage-grid{ grid-template-columns:repeat(2,1fr); }
  .mission-grid{ grid-template-columns:repeat(2,1fr); }
  .pillar-grid{ grid-template-columns:repeat(2,1fr); }
}
@media(max-width: 760px){
  .main-nav{
    position:fixed; top:0; right:0; height:100vh; width: min(320px, 80vw);
    background: rgba(5,11,23,0.97); backdrop-filter: blur(20px);
    flex-direction:column; align-items:flex-start; justify-content:center; gap:28px;
    padding: 40px; transform: translateX(100%); transition: transform .35s ease;
    border-left:1px solid var(--border);
  }
  .main-nav.open{ transform: translateX(0); }
  .nav-toggle{ display:flex; z-index:600; }
  .section{ padding:80px 0; }
  .service-grid, .market-grid, .partner-grid, .advantage-grid, .mission-grid, .pillar-grid{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .hero-content h1{ font-size:38px; }
  .cta-inner{ gap:40px; }
  .model-flow{ flex-direction:column; align-items:stretch; }
}