:root{
  --bg: #ffffff;
  --text: #1e1e1e;
  --muted: #666;
  --card: #f6f6f6;
  --accent: #0a63ff;
  --accent-contrast: #ffffff;
  --hero-gradient-1: #1b1b1b;
  --hero-gradient-2: #3b3b3b;
}
/* Dark theme */
.theme-dark{
  --bg: #0b0c0e;
  --text: #e8eaed;
  --muted: #a0a4ab;
  --card: #16181c;
  --accent: #6ea8fe;
  --accent-contrast: #0b0c0e;
  --hero-gradient-1: #0f1115;
  --hero-gradient-2: #232730;
}
/* Industrial/Rustic theme */
.theme-industrial{
  --bg: #111315;
  --text: #e7e3dc;
  --muted: #b9b2a6;
  --card: #1a1d20;
  --accent: #d1a24a; /* warm brass */
  --accent-contrast: #0d0e10;
  --hero-gradient-1: #0e0f12;
  --hero-gradient-2: #2a2c31;
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container{
  width: min(1100px, 92%);
  margin: 0 auto;
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 85%, var(--card) 15%);
  border-bottom: 1px solid color-mix(in oklab, var(--bg) 60%, #000 40%);
  backdrop-filter: saturate(140%) blur(6px);
}
.topbar-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}
.brand{
  display:flex; align-items:center; gap:10px;
}
.brand-mark{
  width:44px; height:auto; border-radius:6px; display:block;
  box-shadow: 0 1px 3px rgba(0,0,0,.25);
  object-fit: contain;
  background: #fff;
}
.brand-name{ font-weight: 700; letter-spacing:.2px; }

.theme-switcher{ display:flex; gap:8px; }
.theme-btn{
  appearance:none; border:1px solid color-mix(in oklab, var(--text) 20%, transparent);
  background: transparent; color: var(--text);
  padding:6px 10px; border-radius: 999px; cursor:pointer; font-size:.9rem;
}
.theme-btn[aria-pressed="true"]{ background: var(--accent); color: var(--accent-contrast); border-color: transparent; }

.hero{
  position:relative;
  isolation:isolate;
  min-height: 62vh;
  display:grid; place-items:center;
  overflow:hidden;
}
.hero-bg{
  position:absolute; inset:0; z-index:-1;
  /* Layered gradient + subtle steel texture stripes */
  background:
    repeating-linear-gradient( 135deg, rgba(255,255,255,0.04) 0 8px, transparent 8px 16px),
    radial-gradient(1200px 600px at 10% 20%, rgba(255,200,90,0.10), transparent 60%),
    linear-gradient(180deg, var(--hero-gradient-1), var(--hero-gradient-2));
  filter: saturate(110%);
}
.hero-content{
  text-align:center;
  padding: clamp(24px, 4vw, 48px) 0;
}
.hero h1{
  margin:0 0 10px;
  font-size: clamp(28px, 4.2vw, 54px);
  line-height: 1.1;
}
.lede{
  margin: 0 auto 22px;
  color: var(--muted);
  max-width: 52ch;
  font-size: clamp(16px, 1.9vw, 19px);
}
.cta{
  display:inline-block;
  text-decoration:none;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 700;
  transition: transform .08s ease, filter .15s ease;
}
.cta:hover{ transform: translateY(-1px); filter: brightness(1.05); }

.about{
  padding: 56px 0;
}
.about h2{ font-size: clamp(22px, 2.4vw, 30px); margin:0 0 8px; }
.about p{ margin:0; color: var(--text); }

.contact{
  background: var(--card);
  padding: 56px 0;
  border-top: 1px solid color-mix(in oklab, var(--bg) 50%, #000 50%);
  border-bottom: 1px solid color-mix(in oklab, var(--bg) 50%, #000 50%);
}
.contact h2{ font-size: clamp(22px, 2.4vw, 30px); margin:0 0 8px; }
.contact p{ margin: 0 0 20px; color: var(--muted); }

.contact-form{
  width:min(720px, 100%);
  display:grid; gap:14px;
}
.form-row{
  display:grid; gap:8px;
}
label{ font-weight:600; }
input, textarea{
  width:100%;
  padding: 12px 14px;
  border: 1px solid color-mix(in oklab, var(--text) 15%, transparent);
  border-radius:10px;
  background: color-mix(in oklab, var(--bg) 90%, #000 10%);
  color: var(--text);
  outline: none;
}
input:focus, textarea:focus{
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent);
}
.submit{
  justify-self: start;
  background: var(--accent);
  color: var(--accent-contrast);
  border: none; border-radius: 10px;
  padding: 12px 18px;
  font-weight:700; cursor:pointer;
}
.submit:hover{ filter: brightness(1.05); }
.privacy{ color: var(--muted); font-size:.9rem; margin:6px 0 0; }

.site-footer{
  padding: 28px 0;
  text-align:center;
  color: var(--muted);
}
.small{ font-size: .95rem; }