/* ---- Base tokens (light) ---- */
:root{
  color-scheme: light dark; /* hints to UA */
  --bg:#f7f7f8;
  --surface:#ffffff;
  --fg:#111111;
  --muted:#6b7280;
  --brand:#1d94e8;
  --border:#e5e7eb;

  /* custom select arrow (light) */
  --select-arrow: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23111' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");

  --space: clamp(12px, 1.8vw, 20px);
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,.08);

  --fs-base: clamp(16px, 1.4vw, 18px);
  --fs-h1: clamp(24px, 4.2vw, 36px);
  --fs-lead: clamp(14px, 1.6vw, 18px);
}

/* ---- Dark theme overrides ---- */
html[data-theme="dark"]{
  --bg:#0f1115;
  --surface:#151821;
  --fg:#f5f7fb;
  --muted:#a3acc2;
  --brand:#1d94e8;  /* slightly lighter for contrast */
  --border:#2a2f3a;
  --shadow: 0 10px 30px rgba(0,0,0,.45);
  /* custom select arrow (dark) */
  --select-arrow: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f7fb' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font: var(--fs-base)/1.5 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;
  -webkit-text-size-adjust:100%;
}

/* ---- Site header ---- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in oklab, var(--surface), transparent 10%);
  border-bottom: 1px solid var(--border);
}
.site-header__inner{
  max-width: 1100px;
  margin-inline: auto;
  padding: 10px clamp(12px, 3vw, 24px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit}
.brand__logo{width:clamp(200px, 18vw, 420px); height:auto; display:block}
.brand__name{font-weight:700; letter-spacing:.2px}

.icon-btn{
  appearance:none; border:1px solid var(--border); background:var(--surface); color:inherit;
  border-radius:10px; padding:8px 10px; cursor:pointer;
}

/* ---- Card container ---- */
.container{
  width: min(100% - 2*var(--space), 860px);
  margin-inline:auto;
  margin-block: clamp(16px, 6vh, 48px);
  background:var(--surface);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding: clamp(16px, 3vw, 32px);
}

/* ---- Brand row (big logo + tagline) ---- */
.brand-row{
  display:grid; place-items:center; text-align:center;
  margin-bottom: clamp(8px, 2.5vw, 16px);
}
.brand-row__logo{
  width: clamp(56px, 10vw, 96px);
  height: auto;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.06));
}
.brand-row__tagline{
  margin-top: 8px;
  color: var(--muted);
}

/* ---- Section header ---- */
.header h1{font-size:var(--fs-h1); margin:0 0 6px}
.lead{font-size:var(--fs-lead); color:var(--muted); margin:0}
.footer{margin-top: clamp(12px, 2.5vw, 18px)}

/* ---- Tabs ---- */
.tabs{
  display:flex;
  gap:0;
  margin-top: clamp(16px, 3vw, 24px);
  margin-bottom: -1px;
  border-bottom: 1px solid var(--border);
}
.tab-btn{
  appearance:none;
  border:none;
  border-top-left-radius:var(--radius);
  border-top-right-radius:var(--radius);
  border-bottom:1px solid var(--border);
  background:#e5e7eb;
  color:#6b7280;
  font:inherit;
  font-weight:600;
  padding:14px clamp(32px, 6vw, 48px);
  cursor:pointer;
  transition:all 0.2s ease;
  position:relative;
  z-index:1;
}
.tab-btn:hover{
  background:#d1d5db;
  color:#374151;
}
.tab-btn.active{
  background:var(--surface);
  color:var(--fg);
  border-bottom-color:var(--surface);
  z-index:2;
}
html[data-theme="dark"] .tab-btn{
  background:#2a2f3a;
  color:#a3acc2;
}
html[data-theme="dark"] .tab-btn:hover{
  background:#3a3f4a;
  color:var(--fg);
}
html[data-theme="dark"] .tab-btn.active{
  background:var(--surface);
  color:var(--fg);
  border-bottom-color:var(--surface);
}

/* ---- Customer forms ---- */
.customer-form{
  display:none;
  margin-top:0;
  padding-top:clamp(20px, 3vw, 28px);
}
.customer-form.active{
  display:block;
}

/* vertical spacing utility */
.stack > * + *{ margin-top: clamp(10px, 2.4vw, 16px); }

/* ---- Form controls ---- */
label{display:block; font-weight:600}
label input,
label textarea{
  display:block;
  width:100%;
  margin-top:6px;
  padding:12px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
  color:#111;
  font-size: clamp(15px, 1.3vw, 17px);
  font-family:inherit;
  line-height:1.5;
}
html[data-theme="dark"] label input,
html[data-theme="dark"] label textarea{
  background:#0f1115; color:var(--fg); border-color: var(--border);
}

/* selects styled like inputs */
label select{
  display:block;
  width:100%;
  margin-top:6px;
  padding:12px 42px 12px 12px; /* room for arrow */
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff var(--select-arrow) no-repeat right 12px center;
  background-size:16px 16px;
  color:#111;
  font-size: clamp(15px, 1.3vw, 17px);
  font-family:inherit;
  appearance:none;
}
html[data-theme="dark"] label select{
  background:#0f1115 var(--select-arrow) no-repeat right 12px center;
  background-size:16px 16px;
  color:var(--fg);
  border-color:var(--border);
}

label textarea{resize:vertical; min-height:120px}

input:focus-visible,
textarea:focus-visible{
  outline:3px solid color-mix(in oklab, var(--brand), white 65%);
  outline-offset: 2px;
  border-color: color-mix(in oklab, var(--brand), white 35%);
}
label select:focus-visible{
  outline:3px solid color-mix(in oklab, var(--brand), white 65%);
  outline-offset:2px;
  border-color: color-mix(in oklab, var(--brand), white 35%);
}

.muted{color:var(--muted)}
.hp{display:none}

/* ---- Responsive field groups ---- */
.grid-2{
  display:grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 2.4vw, 16px);
}
@media (min-width: 640px){
  .grid-2{ grid-template-columns: 1fr 1fr; }
}

/* ---- Buttons ---- */
.btn{
  appearance:none;
  border:1px solid color-mix(in oklab, var(--brand), black 15%);
  border-radius:12px;
  background:var(--brand);
  color:#fff;
  font-weight:700;
  font-size: clamp(16px, 1.4vw, 18px);
  padding:14px 18px;
  cursor:pointer;
  width:100%;
}
@media (min-width: 560px){
  .btn{ width: fit-content; }
}
.btn:hover{ filter: brightness(.98) }
.btn:active{ transform: translateY(1px) }

/* ---- Links ---- */
a{color:var(--brand); text-decoration:underline}
a:hover{text-decoration:none}

/* ---- Site footer ---- */
.site-footer{
  margin-top: clamp(16px, 6vh, 48px);
  background:#1e3a5f;
  color:#ffffff;
}
.site-footer__inner{
  max-width: 1100px;
  margin-inline:auto;
  padding: clamp(36px, 5vw, 56px) clamp(12px, 3vw, 24px);
  display:grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}
@media (min-width: 768px){
  .site-footer__inner{ grid-template-columns: 1fr 1fr 1fr; }
}
.site-footer__title{
  margin:0 0 12px;
  font-size: clamp(22px, 3.6vw, 28px);
  font-weight:700;
  color:#ffffff;
}
.site-footer__tagline{
  margin:0;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height:1.6;
  color:#e5e7eb;
}
.site-footer__heading{
  margin:0 0 16px;
  font-size: clamp(18px, 2.4vw, 20px);
  font-weight:700;
  color:#ffffff;
}
.site-footer__services,
.site-footer__contact{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.site-footer__services li,
.site-footer__contact li{
  font-size: clamp(14px, 1.6vw, 16px);
  color:#e5e7eb;
}
.site-footer__contact a{
  color:#ffffff;
  text-decoration:none;
  font-weight:500;
}
.site-footer__contact a:hover{
  text-decoration:underline;
}
.site-footer__icon{
  display:inline-block;
  margin-right:8px;
  font-size:16px;
}
.site-footer__divider{
  width:100%;
  height:1px;
  background:#ffffff;
  opacity:0.2;
  margin:0;
}
.site-footer__copyright{
  max-width: 1100px;
  margin-inline:auto;
  padding: clamp(16px, 2.5vw, 24px) clamp(12px, 3vw, 24px);
  text-align:center;
}
.site-footer__copyright small{
  font-size: clamp(12px, 1.4vw, 14px);
  color:#e5e7eb;
}

/* ---- Print ---- */
@media print{
  body{background:#fff}
  .site-header{display:none}
  .container{box-shadow:none; border:0; margin:0; width:100%; padding:0}
  .btn, .footer a{ display:none !important; }
}