:root {
  --bg: #050607;
  --panel: #0f1115;
  --surface: #111827;
  --border: #2a2f38;
  --text: #d1d5db;
  --text-strong: #f8fafc;
  --muted: #9ca3af;
  --accent: #16d3ff;
  --accent-2: #0ea5e9;
  --input: #0b1220;
  --success: #4ade80;
  --danger: #f87171;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}

html[data-theme="light"] {
  --bg: #e8eaf8;
  --panel: #f4f5f8;
  --surface: #eef0fa;
  --border: #c9c6df;
  --text: #334155;
  --text-strong: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --input: #ffffff;
  --success: #15803d;
  --danger: #b91c1c;
  --shadow: 0 18px 50px rgba(37, 99, 235, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 8%, rgba(22, 211, 255, 0.09), transparent 28%),
    var(--bg);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  line-height: 1.55;
}

a { color: var(--accent); }

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--border);
}

.brand { display: inline-flex; align-items: center; }
.brand-logo { width: auto; height: 42px; display: block; }
.header-actions { display: flex; align-items: center; gap: 12px; }

.theme-toggle {
  width: 42px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text-strong);
  cursor: pointer;
}

.back-link {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-underline-offset: 4px;
}

.hero {
  max-width: 720px;
  margin: 54px auto 38px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 9px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }
h1, h2 { color: var(--text-strong); }
h1 { margin-bottom: 14px; font-size: clamp(2.2rem, 5vw, 3.5rem); line-height: 1.05; }
h2 { margin-bottom: 22px; font-size: 1.6rem; }
.hero p:last-child { color: var(--muted); font-size: 1.05rem; }

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.3fr);
  gap: 24px;
  align-items: start;
}

.contact-card,
.form-card {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 30px;
}

.detail-list { display: grid; gap: 14px; }
.detail-item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}
.detail-item a { display: inline-block; font-weight: 750; text-decoration: none; }
.detail-label { display: block; margin-bottom: 4px; color: var(--muted); font-size: 0.78rem; font-weight: 750; text-transform: uppercase; letter-spacing: 0.06em; }

.company-panel {
  margin-top: 22px;
  padding: 20px;
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  background: var(--surface);
}
.company-panel strong { display: block; margin-bottom: 8px; color: var(--text-strong); }
.company-panel p { margin-bottom: 0; color: var(--muted); }

form { display: grid; gap: 17px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { color: var(--text-strong); font-size: 0.88rem; font-weight: 750; }
.field label span, .field-help { color: var(--muted); font-size: 0.78rem; font-weight: 500; }

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--input);
  color: var(--text-strong);
  font: inherit;
  padding: 11px 12px;
  outline: none;
}

textarea { resize: vertical; min-height: 150px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.14); }

.bot-field { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.form-status { min-height: 24px; margin: 0; color: var(--muted); font-size: 0.88rem; }
.form-status.success { color: var(--success); }
.form-status.error { color: var(--danger); }

#submitBtn {
  flex: 0 0 auto;
  border: 1px solid var(--accent-2);
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #fff;
  cursor: pointer;
  font-weight: 800;
  padding: 11px 18px;
}
#submitBtn:disabled { cursor: wait; opacity: 0.65; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 36px;
  padding: 24px 0 32px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.84rem;
}

@media (max-width: 820px) {
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .site-header, main, footer { width: min(100% - 24px, 1120px); }
  .site-header { align-items: flex-start; padding: 16px 0; }
  .brand-logo { height: 34px; }
  .header-actions { flex-wrap: wrap; justify-content: flex-end; }
  .hero { margin-top: 38px; }
  .contact-card, .form-card { padding: 22px 18px; }
  .field-row { grid-template-columns: 1fr; }
  .form-actions, footer { align-items: stretch; flex-direction: column; }
  #submitBtn { width: 100%; }
}