/* HSR VPN portal — design tokens (docs/design-system.md) */
:root {
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-size: 18px; letter-spacing: 0.2px; }
.brand strong { color: var(--brand); }
.topbar nav { display: flex; align-items: center; gap: 12px; }
.topbar nav a { text-decoration: none; }

/* Layout */
.container { width: 100%; max-width: 960px; margin: 0 auto; padding: 32px 24px; flex: 1; }
.foot { text-align: center; padding: 16px; font-size: 13px; }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}
.card.center { max-width: 480px; margin: 48px auto; text-align: center; }
.danger-border { border-color: var(--danger); }
.code-box {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 32px;
  letter-spacing: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
}

h1 { font-size: 24px; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 0 0 8px; }
h3 { font-size: 16px; margin: 24px 0 8px; }
p { margin: 8px 0; }
.muted { color: var(--text-muted); }
.small { font-size: 13px; }
.right { text-align: right; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
}
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text-muted); padding: 6px 10px; font-weight: 500; }
.btn-danger { background: transparent; border-color: var(--danger); color: var(--danger); padding: 4px 10px; font-size: 13px; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-google {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
  font-weight: 500;
  box-shadow: var(--shadow);
}
.btn-google:hover { border-color: var(--text-muted); }

/* Forms */
input[type="text"], select {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  color: var(--text);
  background: #fff;
}
.form-row { display: flex; gap: 8px; flex-wrap: wrap; }
.form-row input[type="text"] { flex: 1; min-width: 240px; }
.inline { display: inline; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
td { padding: 8px; border-bottom: 1px solid var(--border); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.success { background: #dcfce7; color: #166534; }
.badge.danger { background: #fee2e2; color: #991b1b; }

@media (max-width: 480px) {
  .container { padding: 16px; }
  .card.center { margin: 24px auto; }
}