:root {
  --bg: #f3f6f4;
  --bg-accent: #e2ebe6;
  --ink: #14201b;
  --muted: #5b6b63;
  --brand: #0f6a4c;
  --brand-dark: #0b4d38;
  --danger: #9b1c1c;
  --warn: #8a5a00;
  --ok: #0f6a4c;
  --card: rgba(255, 255, 255, 0.86);
  --line: #c9d5ce;
  --shadow: 0 18px 50px rgba(20, 32, 27, 0.08);
  --radius: 18px;
  --font: "Segoe UI", "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 10% -10%, #c7e4d6 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #dce8e2 0%, transparent 50%),
    linear-gradient(180deg, var(--bg), var(--bg-accent));
}

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

.wrap { width: min(960px, calc(100% - 2rem)); margin: 0 auto; }
.site-header, .site-footer {
  padding: 1rem 0;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.brand {
  font-weight: 750;
  letter-spacing: 0.02em;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
}
.nav { display: flex; gap: 0.9rem; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--brand); }

.hero {
  padding: 3.5rem 0 2rem;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  margin: 0 0 0.75rem;
}
.hero p { color: var(--muted); font-size: 1.05rem; max-width: 40rem; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  backdrop-filter: blur(8px);
}
.auth-card, .install-card {
  width: min(520px, 100%);
  margin: 2rem auto;
}
.install-card { width: min(720px, 100%); }

h1, h2, h3 { margin-top: 0; }
label {
  display: block;
  font-size: 0.9rem;
  margin: 0.85rem 0 0.35rem;
  color: var(--muted);
}
input, select, textarea, button {
  font: inherit;
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(15, 106, 76, 0.25);
  border-color: var(--brand);
}
.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1.2rem;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; color: #fff; }
.btn.secondary {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}
.btn.danger { background: var(--danger); }
.alert {
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin: 0 0 1rem;
  font-size: 0.95rem;
}
.alert-error { background: #fde8e8; color: var(--danger); border: 1px solid #f3c1c1; }
.alert-success { background: #e7f6ef; color: var(--ok); border: 1px solid #bfe4d2; }
.alert-warning { background: #fff6e5; color: var(--warn); border: 1px solid #f0d7a0; }
.muted { color: var(--muted); }
.req-table { width: 100%; border-collapse: collapse; }
.req-table th, .req-table td {
  text-align: left;
  padding: 0.55rem 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.ok { color: var(--ok); font-weight: 700; }
.bad { color: var(--danger); font-weight: 700; }
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
@media (max-width: 700px) {
  .grid-2 { grid-template-columns: 1fr; }
}
.panel-meta {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
}
.badge {
  display: inline-block;
  background: #e7f2ec;
  color: var(--brand-dark);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  font-size: 0.8rem;
  margin-right: 0.35rem;
}
code, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9rem;
}
.steps { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1rem; }
.step-pill {
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: #e8eeeA;
  color: var(--muted);
}
.step-pill.active { background: var(--brand); color: #fff; }