:root {
  --bg: #0b0f14;
  --surface: #111820;
  --surface-hover: #101823;
  --border: #1f2a37;
  --text: #e6edf3;
  --muted: #9fb3c8;
  --accent: #2f81f7;
  --accent-hover: #4a90f9;
  --success: #3fb950;
  --warning: #ffab40;
  --danger: #ff7b72;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 2.5rem;
}

body.centered {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

/* -- Navigation -------------------------------------------------------- */

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  margin-bottom: 1.5rem;
}
.topnav-brand { font-weight: 700; letter-spacing: 0.02em; }
.topnav-links { display: flex; align-items: center; gap: 1.25rem; }
.topnav-links a { color: var(--muted); }
.topnav-links a:hover { color: var(--text); text-decoration: none; }

.link-button {
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
  padding: 0;
}
.link-button:hover { color: var(--danger); }

/* -- Typography / layout ------------------------------------------------ */

h1 { font-size: 1.35rem; margin: 0 0 0.35rem; }
h2 { font-size: 1rem; color: var(--muted); margin: 1.5rem 0 0.5rem; }
header { margin-bottom: 1.25rem; }
#status { color: var(--muted); font-size: 0.9rem; }

.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

/* -- Tables --------------------------------------------------------------- */

table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; }
tr:hover { background: var(--surface-hover); }

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

/* -- Cards / forms --------------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.card label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; color: var(--muted); }
.card input, .form-row input {
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.card input:focus, .form-row input:focus {
  outline: none;
  border-color: var(--accent);
}

button, .button {
  padding: 0.55rem 1rem;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
}
button:hover, .button:hover { background: var(--accent-hover); }
button.danger, .button.danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
button.danger:hover, .button.danger:hover { background: var(--danger); color: white; }

.form-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.form-row label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.8rem; color: var(--muted); }

.error { color: var(--danger); font-size: 0.85rem; margin: 0.5rem 0 0; }

/* -- Packet detail / hex --------------------------------------------------- */

.hex { font-family: ui-monospace, monospace; word-break: break-all; white-space: pre-wrap; font-size: 0.85rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.25rem; }
dt { color: var(--muted); }

/* -- Badges ----------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-trusted { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.badge-untrusted { background: rgba(255, 123, 114, 0.15); color: var(--danger); }
.badge-na { background: rgba(159, 179, 200, 0.15); color: var(--muted); }
.suspect { color: var(--warning); font-weight: 600; }