:root {
  --ink: #141C2E;
  --paper: #EEF1F7;
  --card: #FFFFFF;
  --blue: #2F6FED;
  --blue-light: #DCE6FB;
  --green: #1F6E4A;
  --green-light: #DCE9E1;
  --amber: #B97B1F;
  --amber-light: #F5E5CB;
  --red: #A3342E;
  --red-light: #F3DAD8;
  --muted: #5B6472;
  --border: #DCE1EA;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
}

.mono { font-family: 'IBM Plex Mono', monospace; }

a { color: inherit; }

button {
  font-family: inherit;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
}

/* --- Layout shells --- */

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 216px;
  background: var(--ink);
  color: #F5F4EE;
  padding: 24px 16px;
  flex-shrink: 0;
}
.brand { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 18px; margin-bottom: 28px; padding: 0 8px; }
.brand span { color: var(--blue); }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 10px;
  border-radius: 10px; font-size: 13px; color: #B9C0B4; margin-bottom: 2px;
  text-decoration: none; cursor: pointer; border: none; background: none; width: 100%; text-align: left;
}
.nav-item.active { background: rgba(255,255,255,0.08); color: #F5F4EE; font-weight: 500; }
.nav-item:hover:not(.active) { color: #F5F4EE; }
.nav-ico { width: 18px; text-align: center; font-size: 14px; }
.nav-footer { margin-top: auto; padding-top: 20px; }

.main { flex: 1; padding: 28px 36px; max-width: 900px; }

.mobile-shell {
  max-width: 460px; margin: 0 auto; min-height: 100vh; background: var(--paper);
  padding: 20px 20px 100px;
}

.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.page-heading { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 22px; }
.page-sub { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* --- Cards & sections --- */

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  padding: 20px;
}

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 16px 18px; }
.stat-label { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.stat-val { font-family: 'IBM Plex Mono', monospace; font-size: 22px; font-weight: 500; }
.stat-val.red { color: var(--red); }

/* --- Forms --- */

.field-group { margin-bottom: 18px; }
.field-label { font-size: 13px; color: var(--muted); margin-bottom: 8px; display: block; }
.text-input, select.text-input {
  width: 100%; background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; font-size: 14px; color: var(--ink); outline: none;
}
.text-input:focus { border-color: var(--blue); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 14px; padding: 13px 20px; font-weight: 600; font-size: 14px;
  border: none; font-family: 'Space Grotesk', sans-serif;
}
.btn-primary { background: var(--ink); color: #F5F4EE; }
.btn-primary:hover { opacity: 0.92; }
.btn-secondary { background: var(--card); color: var(--ink); border: 1px solid var(--border); }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 12px; font-size: 12px; border-radius: 8px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

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

.badge {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 500;
  padding: 4px 10px; border-radius: 100px;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; }
.badge.b-red { background: var(--red-light); color: var(--red); }
.badge.b-red .dot { background: var(--red); }
.badge.b-amber { background: var(--amber-light); color: var(--amber); }
.badge.b-amber .dot { background: var(--amber); }
.badge.b-green { background: var(--green-light); color: var(--green); }
.badge.b-green .dot { background: var(--green); }
.badge.b-gray { background: var(--border); color: var(--muted); }
.badge.b-gray .dot { background: var(--muted); }

.banner {
  border-radius: 14px; padding: 12px 14px; font-size: 13px; line-height: 1.5;
  margin-bottom: 16px; display: flex; gap: 10px; align-items: flex-start;
}
.banner.b-red { background: var(--red-light); color: var(--red); }
.banner.b-green { background: var(--green-light); color: var(--green); }
.banner.b-amber { background: var(--amber-light); color: var(--amber); }

/* --- Table --- */

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); font-weight: 500; padding: 10px 16px; border-bottom: 1px solid var(--border); }
td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tr:last-child td { border-bottom: none; }

/* --- Misc --- */

.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-state .ico { font-size: 32px; margin-bottom: 12px; }

.error-text { color: var(--red); font-size: 12px; margin-top: 6px; }

.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.tabs { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.tab-btn {
  background: none; border: none; padding: 10px 16px; font-size: 13px; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px; font-weight: 500;
}
.tab-btn.active { color: var(--ink); border-bottom-color: var(--blue); }

@media (max-width: 720px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; display: flex; align-items: center; padding: 14px 16px; }
  .sidebar .brand { margin-bottom: 0; margin-right: auto; }
  .sidebar .nav-item span.nav-label { display: none; }
  .nav-footer { margin-top: 0; margin-left: 8px; }
  .main { padding: 20px; max-width: 100%; }
}