:root {
  --ink: #1a2234;
  --muted: #66758f;
  --line: rgba(26,34,52,0.1);
  --card: rgba(255,255,255,0.92);
  --paper: #fff;
  --sky: #eaf4ff;
  --sand: #f8ecdf;
  --accent: #1164d9;
  --accent-deep: #0b4ea9;
  --ok-bg: #e8f7eb;
  --ok-text: #207b3b;
  --warn-bg: #fdf3e2;
  --warn-text: #96631a;
  --danger: #b42318;
  --danger-bg: rgba(180,35,24,0.08);
  --shadow: 0 22px 50px rgba(22,42,86,0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.94), transparent 30%),
    linear-gradient(135deg, var(--sky), var(--sand));
}

a { color: var(--accent-deep); }

.wrap { width: min(1240px, calc(100% - 28px)); margin: 28px auto; }

.shell {
  border-radius: 30px;
  overflow: hidden;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 28px 32px 22px;
}

.hero h1 { margin: 0; font-size: 30px; letter-spacing: -0.04em; }
.hero .sub { margin: 8px 0 0; color: var(--muted); max-width: 760px; line-height: 1.5; }

.hero-actions, .topbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.content { padding: 0 20px 24px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  margin-bottom: 18px;
}

.card h2 { margin: 0 0 16px; font-size: 22px; letter-spacing: -0.03em; }
.card-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; flex-wrap: wrap; margin-bottom: 18px; }

h3 { margin: 18px 0 10px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* Buttons */
.button, .btn, .danger, .save, .secondary {
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  color: white;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.button, .btn, .save { background: linear-gradient(135deg, var(--accent), var(--accent-deep)); }
.danger { background: linear-gradient(135deg, #db5572, #b63753); }
.secondary { background: linear-gradient(135deg, #2d8f7d, #1e6a5b); }
.btn.outline, .button.secondary {
  background: white;
  color: var(--accent-deep);
  border: 1px solid rgba(15,100,216,0.2);
}
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }

/* Messages / alerts */
.message, .alert {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-radius: 16px;
  font-weight: 600;
  word-break: break-word;
}
.message, .alert-success { background: var(--ok-bg); color: var(--ok-text); }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-warning { background: var(--warn-bg); color: var(--warn-text); }

/* Stat tiles */
.stat-grid, .stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.stat {
  padding: 16px;
  border-radius: 18px;
  background: #f8fbff;
  border: 1px solid var(--line);
}
.stat .label, .stat small { display: block; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; font-size: 12px; }
.stat .value, .stat strong { display: block; margin-top: 8px; font-size: 23px; font-weight: 700; }

/* Badges / pills */
.badge, .pill {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(17,100,217,0.1);
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 12px;
  white-space: nowrap;
}
.badge-success, .pill.ok { background: var(--ok-bg); color: var(--ok-text); }
.badge-warning, .pill.warn { background: var(--warn-bg); color: var(--warn-text); }
.badge-danger, .pill.admin { background: var(--danger-bg); color: var(--danger); }
.badge-muted { background: rgba(102,117,143,0.12); color: var(--muted); }

/* Forms */
.form-row { margin-bottom: 14px; display: flex; flex-direction: column; gap: 8px; max-width: 420px; }
label { display: grid; gap: 8px; color: var(--muted); font-size: 14px; }
input[type=text], input[type=number], input[type=password], input[type=file],
select, textarea {
  width: 100%;
  background: white;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  color: var(--ink);
  font-size: 15px;
  font-family: inherit;
}
textarea { min-height: 100px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: rgba(15,100,216,0.35);
  box-shadow: 0 0 0 4px rgba(15,100,216,0.08);
}
.check { display: flex; align-items: center; gap: 10px; min-height: 44px; }
.check input { width: auto; }
.hint { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; line-height: 1.4; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(17,100,217,0.03); }

.empty {
  padding: 20px;
  border-radius: 18px;
  background: #f8fbff;
  border: 1px dashed var(--line);
  color: var(--muted);
}

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.tabs a { margin-right: 14px; padding-bottom: 4px; color: var(--muted); text-decoration: none; }
.tabs a.active { border-bottom: 2px solid var(--accent); color: var(--ink); font-weight: 700; }

@media (max-width: 720px) {
  .wrap { width: min(100% - 18px, 1240px); margin: 18px auto; }
  .hero { padding: 22px 20px 16px; flex-direction: column; align-items: start; }
  .card-head { flex-direction: column; }
  .hero h1 { font-size: 24px; }
}