@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;600;700;800&display=swap');

:root {
  --vf-ink: #0f172a;
  --vf-muted: #64748b;
  --vf-line: rgba(15, 23, 42, 0.08);
  --vf-card: rgba(255, 255, 255, 0.92);
  --vf-accent: #0f766e;
  --vf-accent-2: #115e59;
  --vf-warn: #b45309;
  --vf-danger: #b91c1c;
  --vf-ok: #047857;
  --vf-soft: #ecfdf5;
  --vf-radius: 18px;
  --vf-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Cairo', 'Segoe UI', Tahoma, sans-serif;
  color: var(--vf-ink);
  min-height: 100vh;
  background:
    radial-gradient(1200px 500px at 10% -10%, #ccfbf1 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #e0f2fe 0%, transparent 50%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 28px 18px 60px; }
.wrap.login-mode { max-width: 440px; }

.brand { text-align: center; margin-bottom: 24px; }
.logo {
  width: 68px; height: 68px; margin: 0 auto 12px;
  background: linear-gradient(145deg, #0f766e, #0e7490);
  border-radius: 20px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 30px rgba(15, 118, 110, 0.35);
}
.brand h1 { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; color: var(--vf-accent-2); }
.muted { color: var(--vf-muted); font-size: 14px; line-height: 1.7; }

.card {
  background: var(--vf-card);
  border: 1px solid var(--vf-line);
  border-radius: var(--vf-radius);
  padding: 22px;
  box-shadow: var(--vf-shadow);
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
  animation: rise 0.45s ease both;
}
.card h2 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.btn {
  background: linear-gradient(135deg, var(--vf-accent), #0e7490);
  color: #fff; border: none; padding: 12px 18px; border-radius: 12px;
  cursor: pointer; font-size: 14px; font-weight: 700; font-family: inherit;
  transition: transform .15s ease, box-shadow .15s ease, filter .15s;
  box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.orax { background: linear-gradient(100deg, #e0353c, #2b6cf0); width: 100%; margin-bottom: 10px; }
.btn.secondary { background: #e2e8f0; color: var(--vf-ink); box-shadow: none; }
.btn.sm { padding: 8px 12px; font-size: 13px; border-radius: 10px; }
.btn.danger { background: linear-gradient(135deg, #dc2626, #b91c1c); box-shadow: 0 8px 18px rgba(185, 28, 28, 0.25); }
.btn.ghost { background: transparent; color: var(--vf-accent-2); box-shadow: none; border: 1px solid var(--vf-line); }

input, select {
  width: 100%; padding: 12px 14px; border: 1px solid #cbd5e1; border-radius: 12px;
  margin-bottom: 10px; font-size: 14px; font-family: inherit; background: #fff;
}
input:focus, select:focus { outline: 2px solid rgba(15, 118, 110, 0.25); border-color: var(--vf-accent); }
.hidden { display: none !important; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px; gap: 12px; flex-wrap: wrap;
}
.topbar .brand-mini {
  display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--vf-accent-2);
}
.topbar .brand-mini span {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(145deg, #0f766e, #0e7490); display: inline-flex;
  align-items: center; justify-content: center; color: #fff; font-size: 14px;
}
.topbar a { color: var(--vf-accent-2); font-size: 13px; text-decoration: none; font-weight: 600; }

.dash-hero {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; margin-bottom: 16px;
}
@media (max-width: 860px) { .dash-hero { grid-template-columns: 1fr; } }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.stat {
  background: var(--vf-soft); border-radius: 14px; padding: 14px;
  border: 1px solid rgba(15, 118, 110, 0.08);
}
.stat b { display: block; font-size: 22px; font-weight: 800; color: var(--vf-accent-2); }
.stat span { font-size: 12px; color: var(--vf-muted); }

.child-grid { display: grid; gap: 12px; }
.child-card {
  border: 1px solid var(--vf-line); border-radius: 16px; padding: 16px;
  background: #fff; cursor: pointer; transition: border-color .2s, transform .2s, box-shadow .2s;
  position: relative; overflow: hidden;
}
.child-card::before {
  content: ''; position: absolute; inset: 0 auto 0 0; width: 4px;
  background: #94a3b8;
}
.child-card.online::before { background: var(--vf-ok); }
.child-card:hover, .child-card.active {
  border-color: rgba(15, 118, 110, 0.35);
  box-shadow: 0 12px 30px rgba(15, 118, 110, 0.1);
  transform: translateY(-2px);
}
.child-card .row { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; }
.child-card .actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  background: #d1fae5; color: #065f46; padding: 3px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 700;
}
.badge.off { background: #fee2e2; color: #991b1b; }
.badge.warn { background: #ffedd5; color: #9a3412; }

.progress { height: 8px; background: #e2e8f0; border-radius: 999px; margin: 10px 0 6px; overflow: hidden; }
.progress-bar { height: 100%; background: linear-gradient(90deg, #0f766e, #0891b2); border-radius: 999px; transition: width .4s ease; }
.progress.over .progress-bar { background: linear-gradient(90deg, #dc2626, #f97316); }

.code {
  font-size: 36px; letter-spacing: 8px; text-align: center; color: var(--vf-accent-2);
  font-weight: 800; margin: 14px 0; font-variant-numeric: tabular-nums;
}

.panel-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.panel-head h2 { margin: 0; font-size: 22px; font-weight: 800; }
.tabs {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px;
  background: #f1f5f9; padding: 6px; border-radius: 14px;
}
.tab {
  border: none; background: transparent; padding: 10px 14px; border-radius: 10px;
  font-family: inherit; font-weight: 700; font-size: 13px; color: var(--vf-muted); cursor: pointer;
  transition: background .2s, color .2s;
}
.tab.active { background: #fff; color: var(--vf-accent-2); box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06); }
.tab-pane { display: none; animation: rise .35s ease both; }
.tab-pane.active { display: block; }

.meter {
  display: grid; gap: 10px;
}
.meter-item {
  display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center;
  padding: 10px 12px; border-radius: 12px; background: #f8fafc; border: 1px solid var(--vf-line);
}
.meter-item .bar {
  grid-column: 1 / -1; height: 7px; background: #e2e8f0; border-radius: 999px; overflow: hidden;
}
.meter-item .bar > i {
  display: block; height: 100%; background: linear-gradient(90deg, #0f766e, #06b6d4);
  border-radius: 999px;
}

.tag {
  display: inline-flex; align-items: center; gap: 6px; background: #f1f5f9;
  padding: 7px 11px; border-radius: 999px; margin: 4px 0 4px 6px; font-size: 13px; font-weight: 600;
}
.tag button { background: none; border: none; color: var(--vf-danger); cursor: pointer; font-size: 16px; font-family: inherit; }

.alert-item {
  border-right: 3px solid var(--vf-accent); padding: 10px 12px; margin-bottom: 8px;
  background: #f8fafc; font-size: 13px; border-radius: 0 12px 12px 0;
}

#map { height: 260px; border-radius: 14px; margin: 12px 0; border: 1px solid var(--vf-line); }

.modal-back {
  position: fixed; inset: 0; background: rgba(15, 23, 42, 0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
  padding: 18px; backdrop-filter: blur(4px);
}
.modal {
  width: min(460px, 100%); background: #fff; border-radius: 20px; padding: 22px;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.25); animation: rise .3s ease both;
}
.modal h3 { font-size: 18px; margin-bottom: 8px; }
.divider { display: flex; align-items: center; gap: 10px; margin: 14px 0; color: var(--vf-muted); font-size: 12px; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: #e2e8f0; }
.error { color: var(--vf-danger); font-size: 14px; margin-bottom: 10px; }
label { font-size: 13px; color: var(--vf-muted); display: block; margin-bottom: 4px; font-weight: 600; }

.detail-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 14px;
}
@media (max-width: 640px) { .detail-grid { grid-template-columns: 1fr; } }
.detail-tile {
  background: #f8fafc; border: 1px solid var(--vf-line); border-radius: 14px; padding: 14px;
}
.detail-tile small { display: block; color: var(--vf-muted); font-size: 12px; margin-bottom: 4px; }
.detail-tile strong { font-size: 16px; font-weight: 800; }

.empty {
  text-align: center; padding: 28px 16px; color: var(--vf-muted);
  border: 1px dashed #cbd5e1; border-radius: 16px; background: rgba(255,255,255,.5);
}