:root {
  --primary: #0F766E;
  --primary-dark: #0A5D57;
  --ink: #1F2933;
  --muted: #5F6B76;
  --border: #DBE2E8;
  --bg: #F2F5F7;
  --danger: #B91C1C;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

a { color: var(--primary); }

/* Topbar / Nav */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  height: 56px;
}
.brand { font-weight: 700; color: var(--ink); }
.brand span { color: var(--muted); font-weight: 400; }
.topbar nav { display: flex; gap: 4px; align-items: center; }
.topbar nav a {
  padding: 8px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}
.topbar nav a.active { color: var(--primary); background: #E6F4F2; }
.topbar nav a.logout { color: var(--danger); }

.content { max-width: 920px; margin: 24px auto; padding: 0 20px; }

h1 { font-size: 22px; margin: 0 0 8px; }
.muted { color: var(--muted); }

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

/* Cards */
.cards { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 16px; }
.card {
  flex: 1 1 200px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  color: var(--ink);
}
.card:hover { border-color: var(--primary); }
.card-num { font-size: 34px; font-weight: 800; color: var(--primary); }
.card-label { font-weight: 600; margin-top: 4px; }
.card-sub { color: var(--muted); font-size: 13px; margin-top: 2px; }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid #EEF2F6; }
.table th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.table tr:last-child td { border-bottom: none; }
.actions { display: flex; gap: 12px; align-items: center; }
.actions form { margin: 0; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: #EEF2F6; color: var(--muted); font-size: 12px; font-weight: 600; }
.badge-admin { background: #E6F4F2; color: var(--primary); }
.badge-active { background: #E7F6EC; color: #176B34; }
.badge-locked { background: #FDECEA; color: var(--danger); }
.link-action { background: none; border: none; color: var(--primary); font-weight: 600; padding: 0; }

/* Forms */
.form { max-width: 460px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.form label, .login-card label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; font-weight: 600; }
.form label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; }
input[type=text], input[type=password], input[type=url], select {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; font: inherit; width: 100%;
}
input:focus, select:focus { outline: 2px solid #B6E0DA; border-color: var(--primary); }
input:disabled { background: #F3F6F9; color: var(--muted); }
small.muted { font-weight: 400; }

.inline-form { display: flex; gap: 10px; margin: 12px 0 18px; flex-wrap: wrap; }
.inline-form input[type=text] { width: auto; flex: 1 1 200px; }

button { cursor: pointer; font: inherit; }
.btn-primary {
  background: var(--primary); color: #fff; border: none; border-radius: 8px;
  padding: 10px 16px; font-weight: 600;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost {
  border: 1px solid var(--border); background: #fff; color: var(--ink);
  border-radius: 8px; padding: 8px 14px; text-decoration: none; font-weight: 600; font-size: 14px;
}
.link-danger { background: none; border: none; color: var(--danger); font-weight: 600; padding: 0; }

.alert { background: #FDECEA; color: var(--danger); border: 1px solid #F5C6C2;
  padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: #fff; border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; width: 100%; max-width: 360px; box-shadow: 0 10px 30px rgba(31,41,51,.06); }
.login-card h1 { margin: 0; }
.login-card p.muted { margin: 2px 0 18px; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.login-card .btn-primary { padding: 12px; font-size: 15px; }