:root {
  --ink: #16171b; --sub: #6b7080; --line: #e7e8ec; --line-soft: #eef0f3;
  --bg: #f5f6f8; --card: #ffffff;
  --accent: #4f46e5; --accent-hover: #433cd1; --accent-soft: #eef0fe; --accent-ink: #ffffff;
  --ok: #067647; --ok-bg: #d1fadf;
  --pending: #b54708; --pending-bg: #fef0c7;
  --bad: #b42318; --bad-bg: #fee4e2;
  --dead: #667085; --dead-bg: #eceef1;
  --sidebar-w: 232px;
  --shadow-sm: 0 1px 2px rgba(16,17,23,.04);
  --shadow-card: 0 1px 2px rgba(16,17,23,.04), 0 1px 8px rgba(16,17,23,.03);
  --shadow-pop: 0 8px 24px rgba(16,17,23,.10), 0 2px 6px rgba(16,17,23,.06);
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 14.5px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------------- shell */
.shell { display: flex; min-height: 100vh; }
.shell-main { flex: 1; min-width: 0; }

.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  background: var(--card); border-right: 1px solid var(--line);
  display: flex; flex-direction: column; height: 100vh; position: sticky; top: 0;
}
.sidebar-top { display: flex; align-items: center; justify-content: space-between; padding: 18px 16px 14px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); min-width: 0; }
.brand:hover { text-decoration: none; }
.brand-mark {
  flex: 0 0 30px; width: 30px; height: 30px; border-radius: 9px; background: var(--accent);
  color: #fff; font-weight: 700; font-size: 14px; display: flex; align-items: center; justify-content: center;
}
.brand-name {
  font-weight: 700; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.nav-close, .nav-open { display: none; cursor: pointer; color: var(--sub); }

.sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 6px 12px; flex: 1; }
.sidebar nav a {
  display: flex; align-items: center; gap: 11px; padding: 9px 12px; border-radius: 8px;
  color: var(--sub); font-weight: 500; font-size: 14px;
}
.sidebar nav a:hover { background: var(--line-soft); color: var(--ink); text-decoration: none; }
.sidebar nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav-icon { display: flex; flex: 0 0 18px; color: currentColor; opacity: .85; }

.sidebar-bottom { padding: 14px 16px 18px; border-top: 1px solid var(--line-soft); }

.mobile-bar {
  display: none; align-items: center; gap: 14px; padding: 14px 18px;
  background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5;
}
.mobile-bar .brand-name { font-weight: 700; font-size: 15px; }
.nav-toggle { display: none; }
.nav-scrim { display: none; }

@media (max-width: 880px) {
  .sidebar {
    position: fixed; left: 0; top: 0; z-index: 30; transform: translateX(-100%);
    transition: transform .2s ease; box-shadow: var(--shadow-pop);
  }
  .nav-close { display: block; font-size: 22px; line-height: 1; }
  .mobile-bar { display: flex; }
  .nav-open { display: flex; }
  .nav-toggle:checked ~ .shell .sidebar { transform: translateX(0); }
  .nav-toggle:checked ~ .shell .nav-scrim { display: block; }
  .nav-scrim {
    position: fixed; inset: 0; background: rgba(16,17,23,.35); z-index: 20;
  }
}

/* ---------------------------------------------------------------- content */
.wrap { max-width: 1120px; margin: 0 auto; padding: 32px 28px 80px; }

h1 { font-size: 21px; margin: 0 0 4px; font-weight: 700; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 30px 0 12px; font-weight: 700; letter-spacing: -.01em; }
.muted { color: var(--sub); }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 22px; gap: 16px; flex-wrap: wrap; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 30px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-card); }
.stat-card .n { font-size: 25px; font-weight: 700; letter-spacing: -.01em; }
.stat-card .l { color: var(--sub); font-size: 12.5px; margin-top: 3px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 18px; box-shadow: var(--shadow-card); }

table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
table.plain { border: 1px solid var(--line); }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line-soft); font-size: 13.5px; }
th { color: var(--sub); font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafafc; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 600; }
.badge.active { background: var(--ok-bg); color: var(--ok); }
.badge.pending { background: var(--pending-bg); color: var(--pending); }
.badge.declined { background: var(--bad-bg); color: var(--bad); }
.badge.cancelled { background: var(--dead-bg); color: var(--dead); }

label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 5px; }
label:first-child { margin-top: 0; }
input[type=text], input[type=email], input[type=tel], input[type=number], input[type=password],
select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: var(--card); color: var(--ink);
  transition: border-color .12s ease;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { min-height: 70px; resize: vertical; }
.hint { font-size: 12px; color: var(--sub); margin-top: 4px; }

button, .btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink); border: none;
  border-radius: 8px; padding: 9px 16px; font-size: 14px; font-weight: 600; cursor: pointer;
  text-decoration: none; transition: background .12s ease;
}
button:hover, .btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.secondary { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.btn.secondary:hover { background: var(--line-soft); }
.btn.danger { background: var(--bad); }
.btn.danger:hover { background: #962015; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.inline-form { display: inline; }

.error-box { background: var(--bad-bg); color: var(--bad); border-radius: 9px; padding: 11px 15px; margin-bottom: 16px; font-size: 13.5px; }
.ok-box { background: var(--ok-bg); color: var(--ok); border-radius: 9px; padding: 11px 15px; margin-bottom: 16px; font-size: 13.5px; }

.login-wrap { max-width: 360px; margin: 12vh auto; }
.login-wrap .card { padding: 30px; }

.settings-group { margin-bottom: 30px; }
.settings-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px;
  padding: 15px 0; border-bottom: 1px solid var(--line-soft); }
.settings-row:last-child { border-bottom: none; }
.settings-row .meta { flex: 0 0 260px; }
.settings-row .meta .label { font-weight: 600; }
.settings-row .meta .hint { margin-top: 3px; }
.settings-row .val { flex: 1; }
.source-tag { font-size: 11px; padding: 2px 7px; border-radius: 5px; background: var(--bg); color: var(--sub); margin-left: 8px; }
.source-tag.database { background: var(--ok-bg); color: var(--ok); }

.link-box { display: flex; gap: 8px; align-items: center; background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; font-size: 13px; word-break: break-all; margin-top: 10px; }

.center-page { max-width: 480px; margin: 14vh auto; text-align: center; }