:root {
  --bg: #0f1420;
  --bg-2: #161d2e;
  --surface: #1c2436;
  --surface-2: #232d43;
  --border: #2c374f;
  --text: #e8ecf4;
  --muted: #93a0b8;
  --primary: #4f7cff;
  --primary-2: #3a63e0;
  --green: #2ecc71;
  --amber: #f5a623;
  --red: #ff5a5f;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
a { color: inherit; text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  transition: .15s;
}
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-2); }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }
.btn-danger { background: transparent; color: var(--red); border-color: rgba(255,90,95,.4); }
.btn-danger:hover { background: rgba(255,90,95,.12); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 24px;
  background: radial-gradient(1200px 600px at 50% -10%, #1d2740 0%, var(--bg) 55%);
}
.login-card {
  width: 360px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 32px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 6px;
}
.login-logo, .brand { font-size: 26px; font-weight: 700; letter-spacing: -.5px; }
.login-logo span, .brand span { color: var(--primary); }
.login-card h1 { font-size: 18px; margin: 12px 0 0; }
.login-card p { margin: 0 0 12px; font-size: 13px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; margin-top: 10px; }
.login-card input { margin-bottom: 2px; }
.login-card .btn { margin-top: 18px; }
.login-footer { color: var(--muted); font-size: 12px; }
.form-error { color: var(--red); font-size: 13px; min-height: 18px; margin-top: 8px; text-align: center; }

/* ---------- Inputs ---------- */
input, select, textarea {
  background: var(--bg-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font-size: 14px; font-family: inherit; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
textarea { resize: vertical; min-height: 70px; }
label.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }

/* ---------- App layout ---------- */
.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-2); border-right: 1px solid var(--border);
  padding: 22px 16px; display: flex; flex-direction: column; gap: 8px;
}
.sidebar .brand { padding: 0 8px 18px; }
#nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  padding: 10px 12px; border-radius: 9px; color: var(--muted);
  font-weight: 500; font-size: 14px; cursor: pointer;
}
.nav-item:hover { background: var(--surface); color: var(--text); }
.nav-item.active { background: var(--surface-2); color: var(--text); }
.sidebar-foot { border-top: 1px solid var(--border); padding-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.user-chip { display: flex; align-items: center; gap: 10px; }
.avatar {
  width: 38px; height: 38px; border-radius: 50%; background: var(--primary);
  display: grid; place-items: center; font-weight: 700; color: #fff; flex-shrink: 0;
}
.user-meta { display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.user-meta strong { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.content { padding: 28px 34px; overflow: auto; }

/* ---------- Page header ---------- */
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; gap: 16px; flex-wrap: wrap; }
.page-head h1 { font-size: 22px; margin: 0; }
.page-head .sub { color: var(--muted); font-size: 13px; margin-top: 2px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.toolbar input, .toolbar select { width: auto; min-width: 200px; }

/* ---------- Cards / stats ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px,1fr)); gap: 16px; margin-bottom: 26px; }
.stat {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px;
}
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 30px; font-weight: 700; margin-top: 6px; }
.stat .value.small { font-size: 22px; }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.panel-head { padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 600; }

/* ---------- Table ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 16px; font-size: 14px; }
thead th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; border-bottom: 1px solid var(--border); }
tbody tr { border-bottom: 1px solid var(--border); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }
.row-click { cursor: pointer; }
.empty { padding: 40px; text-align: center; color: var(--muted); }

/* ---------- Badges ---------- */
.badge {
  display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 11px;
  font-weight: 600; background: var(--surface-2); color: var(--muted); text-transform: capitalize;
}
.badge.green { background: rgba(46,204,113,.15); color: #58d68d; }
.badge.amber { background: rgba(245,166,35,.15); color: #f5b849; }
.badge.red { background: rgba(255,90,95,.15); color: #ff8589; }
.badge.blue { background: rgba(79,124,255,.18); color: #8aa8ff; }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(6,9,16,.6); backdrop-filter: blur(3px);
  display: grid; place-items: center; z-index: 50; padding: 20px;
}
.modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  width: 100%; max-width: 720px; max-height: 90vh; overflow: hidden;
  display: flex; flex-direction: column; box-shadow: var(--shadow);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-head h2 { font-size: 18px; margin: 0; }
.modal-close { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 22px; overflow: auto; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .col-span { grid-column: 1 / -1; }
.form-section-title { grid-column: 1/-1; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--primary); font-weight: 700; margin-top: 6px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; grid-column: 1/-1; }

/* ---------- Detail ---------- */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; }
.detail-item { display: flex; flex-direction: column; gap: 2px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.detail-item .k { font-size: 11px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); }
.detail-item .v { font-size: 14px; }
.sub-table { margin-top: 8px; }
.tabs { display: flex; gap: 6px; margin: 18px 0 12px; border-bottom: 1px solid var(--border); }
.tab { padding: 8px 14px; cursor: pointer; color: var(--muted); font-weight: 500; border-bottom: 2px solid transparent; }
.tab.active { color: var(--text); border-bottom-color: var(--primary); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 100;
  background: var(--surface-2); border: 1px solid var(--border); border-left: 3px solid var(--green);
  padding: 14px 18px; border-radius: 10px; box-shadow: var(--shadow); font-size: 14px; max-width: 340px;
}
.toast.error { border-left-color: var(--red); }

/* ---------- Misc ---------- */
.inline-actions { display: flex; gap: 8px; }
.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 13px; font-weight: 600; padding: 0; }
.spinner { text-align: center; padding: 50px; color: var(--muted); }
@media (max-width: 780px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; align-items: center; flex-wrap: wrap; }
  #nav { flex-direction: row; }
  .form-grid, .detail-grid { grid-template-columns: 1fr; }
}