:root {
  --bg: #14181c;
  --panel: #1c2227;
  --panel-raised: #232a30;
  --border: #303a42;
  --copper: #c98a4b;
  --copper-bright: #e0a668;
  --green: #5fb98c;
  --red: #c2685f;
  --amber: #d9a441;
  --text: #e8e6e1;
  --text-muted: #8b939b;
  --font-display: 'Oswald', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
}
.hidden { display: none !important; }

h1, h2, h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  margin: 0;
}

/* --- Auth screen --- */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at top, #1c2227 0%, #0e1114 70%);
}
.auth-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 40px;
  width: 340px;
}
.auth-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.auth-brand h1 { font-size: 26px; color: var(--copper-bright); }
.auth-sub { color: var(--text-muted); font-size: 13px; margin: 4px 0 24px; }
.auth-error { color: var(--red); font-size: 13px; min-height: 18px; }

label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 14px;
}
input {
  display: block;
  width: 100%;
  margin-top: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14px;
}
input:focus, button:focus { outline: 2px solid var(--copper); outline-offset: 1px; }

.jack-led {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px 2px rgba(95,185,140,0.6);
  display: inline-block;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
}
.btn {
  padding: 9px 16px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
}
.btn-primary { background: var(--copper); color: #14181c; }
.btn-primary:hover { background: var(--copper-bright); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--copper); color: var(--copper-bright); }
.btn-danger { background: transparent; border: 1px solid var(--red); color: var(--red); }
.btn-danger:hover { background: rgba(194,104,95,0.12); }
#auth-submit { width: 100%; padding: 11px; background: var(--copper); color: #14181c; border-radius: 4px; font-family: var(--font-display); letter-spacing: 0.05em; text-transform: uppercase; font-size: 14px; }
#auth-submit:hover { background: var(--copper-bright); }

/* --- App shell --- */
.app { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 6px 8px 20px; }
.brand-name { font-family: var(--font-display); font-size: 17px; letter-spacing: 0.03em; color: var(--copper-bright); }
nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-btn {
  background: transparent;
  color: var(--text-muted);
  text-align: left;
  padding: 10px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.nav-btn:hover { background: var(--panel-raised); color: var(--text); }
.nav-btn.active { background: var(--panel-raised); color: var(--copper-bright); border-left: 2px solid var(--copper); }
.logout-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px;
  font-size: 12px;
  margin-top: 10px;
}
.logout-btn:hover { color: var(--red); border-color: var(--red); }

.main { flex: 1; padding: 28px 36px; max-width: 1100px; }
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.status-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.status-unknown { background: rgba(139,147,155,0.15); color: var(--text-muted); }
.status-ok { background: rgba(95,185,140,0.15); color: var(--green); }
.status-bad { background: rgba(194,104,95,0.15); color: var(--red); }

/* --- Patch panel signature element --- */
.patch-panel {
  background: linear-gradient(180deg, #20262b, #191e22);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
  min-height: 90px;
}
.jack {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 12px 10px;
  text-align: center;
}
.jack .led {
  width: 10px; height: 10px; border-radius: 50%;
  margin: 0 auto 8px;
  background: #3a4249;
}
.jack.active .led {
  background: var(--green);
  box-shadow: 0 0 8px 2px rgba(95,185,140,0.55);
}
.jack.disabled .led { background: var(--red); box-shadow: none; }
.jack-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.jack.active .jack-label { color: var(--text); }
.patch-empty { color: var(--text-muted); font-size: 13px; grid-column: 1 / -1; text-align: center; padding: 20px 0; }

.dash-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 20px;
}
.card h3 { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
.big-stat { font-family: var(--font-mono); font-size: 30px; color: var(--copper-bright); margin: 0; }

.section-actions { margin-bottom: 16px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 28px; }
.data-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
}
.data-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
}
.data-table tr:hover td { background: var(--panel-raised); }
.tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-family: var(--font-mono);
}
.tag-ro { background: rgba(217,164,65,0.15); color: var(--amber); }
.tag-rw { background: rgba(95,185,140,0.15); color: var(--green); }
.tag-off { background: rgba(194,104,95,0.15); color: var(--red); }
.row-actions button { margin-right: 6px; font-size: 12px; padding: 5px 10px; }

/* --- Modal --- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(10,12,14,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px;
  width: 460px;
  max-height: 85vh;
  overflow-y: auto;
}
.modal h3 { margin-bottom: 18px; }
.modal .field-row { display: flex; gap: 12px; }
.modal .field-row label { flex: 1; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 10px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.checkbox-row input { width: auto; margin: 0; }
.checkbox-row label { margin: 0; text-transform: none; font-size: 13px; color: var(--text); }
textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 10px;
  resize: vertical;
}
.form-error { color: var(--red); font-size: 13px; min-height: 18px; margin-top: 6px; }

@media (max-width: 720px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; overflow-x: auto; }
  nav { flex-direction: row; }
  .main { padding: 18px; }
  .dash-grid { grid-template-columns: 1fr; }
}