:root {
  --bg: #0f1420;
  --panel: #1a2130;
  --panel-2: #141a26;
  --border: #2c3850;
  --text: #e6ebf5;
  --muted: #93a1bb;
  --accent: #4f8cff;
  --ok: #3ddc84;
  --warn: #ffd166;
  --error: #ff6b6b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1 { font-size: 22px; margin: 0; }
h2 { font-size: 17px; margin: 28px 0 12px; }
h3 { font-size: 15px; margin: 0 0 12px; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
.muted { color: var(--muted); }
.error { color: var(--error); font-size: 13px; }

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
}
.nav .brand { font-weight: 700; color: var(--text); font-size: 16px; }
.nav-links { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
}
.nav-links a:hover { color: var(--text); text-decoration: none; background: var(--panel-2); }
.nav-links a.active { color: var(--text); background: var(--panel-2); }
.nav-user { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-danger { border-color: var(--error); color: var(--error); }
.btn-danger:hover { background: var(--error); color: #fff; }
.btn-ghost { background: transparent; }
.btn-block { display: block; width: 100%; margin-top: 8px; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.card h3 { margin: 0 0 6px; color: var(--muted); font-weight: 500; font-size: 13px; }
.card .value { font-size: 30px; font-weight: 700; margin: 0; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.filters { display: flex; gap: 10px; margin: 16px 0; flex-wrap: wrap; }

/* Tables */
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
th, td { padding: 10px 12px; text-align: left; font-size: 13px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; background: var(--panel-2); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--panel-2); }
.row-actions { white-space: nowrap; }
.actions-col { width: 1%; }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; background: var(--panel-2); }
.badge-available { color: var(--ok); }
.badge-assigned { color: var(--warn); }
.badge-maintenance { color: var(--error); }
.badge-active { color: var(--warn); }
.badge-completed { color: var(--ok); }
.badge-cancelled { color: var(--muted); }

/* Detail grid */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.detail-grid strong { display: block; color: var(--muted); font-weight: 500; font-size: 12px; }

/* Forms */
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 10px; }
input, select {
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); }
label.check input { width: auto; margin: 0; }

/* Modals */
.modal {
  position: fixed; inset: 0;
  background: rgba(4, 8, 16, 0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 50; padding: 16px;
}
.modal[hidden] { display: none; }
.modal-card {
  width: 100%; max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

/* Login */
.login-wrap { display: flex; justify-content: center; padding-top: 8vh; }
.login-card { width: 100%; max-width: 360px; }

/* Toast */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 18px; font-size: 14px; z-index: 100;
}
.toast.ok { border-color: var(--ok); color: var(--ok); }
.toast.error { border-color: var(--error); color: var(--error); }

.status { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px; font-size: 13px; }
.chart-wrap { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin: 16px 0; }

.sparkline { display: block; color: var(--accent); background: var(--panel); border: 1px solid var(--border); border-radius: 4px; }
.note { font-size: 12px; margin-top: 14px; }

@media (max-width: 640px) {
  .nav { flex-wrap: wrap; }
  .container { padding: 16px 10px 64px; }
  table { display: block; overflow-x: auto; }
}