:root {
  --bg0: #0b1220;
  --bg1: #121a2b;
  --bg2: #1a2438;
  --line: #2a3650;
  --text: #e8eefc;
  --muted: #93a0b8;
  --accent: #3db8a0;
  --on: #22a06b;
  --off: #d64545;
  --warn: #d4a017;
  --radius: 16px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --font: "Segoe UI", "Tahoma", "Noto Sans Arabic", sans-serif;
}

body.theme-light {
  --bg0: #eef3f8;
  --bg1: #ffffff;
  --bg2: #f5f8fc;
  --line: #d5dee8;
  --text: #152033;
  --muted: #5b6b82;
  --shadow: 0 12px 28px rgba(20, 40, 80, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(61, 184, 160, 0.18), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(56, 120, 200, 0.15), transparent 55%),
    var(--bg0);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(18, 26, 43, 0.85);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--accent); }
.nav { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.nav a, .linkish {
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
}
.nav a:hover, .linkish:hover { color: var(--text); }
.main { max-width: 980px; margin: 0 auto; padding: 20px 16px 48px; }
.dash, .page { display: grid; gap: 16px; }
.panel {
  background: linear-gradient(180deg, var(--bg2), var(--bg1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.panel h2 { margin: 0 0 14px; font-size: 1.05rem; }
.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.status-grid .label { display: block; color: var(--muted); font-size: 0.8rem; margin-bottom: 4px; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-row.wrap { flex-wrap: wrap; }
.btn {
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 700;
  cursor: pointer;
  color: #fff;
  transition: transform 0.15s ease, filter 0.15s ease;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--accent); color: #06231d; }
.btn-on { background: var(--on); }
.btn-off { background: var(--off); }
.btn-ghost { background: var(--bg0); border: 1px solid var(--line); color: var(--text); }
.btn.active { outline: 2px solid var(--accent); }
.countdown {
  font-size: 2.4rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  margin: 8px 0 14px;
}
.banner {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(61, 184, 160, 0.15);
  border: 1px solid rgba(61, 184, 160, 0.35);
}
.banner.warn {
  background: rgba(214, 69, 69, 0.12);
  border-color: rgba(214, 69, 69, 0.35);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.schedule-list { list-style: none; padding: 0; margin: 0; }
.schedule-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.timer-custom { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.timer-custom input, .form-grid input, .form-grid select, .override-opt select, .override-opt input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg0);
  color: var(--text);
  font: inherit;
}
.override-opt { display: block; margin-top: 12px; color: var(--muted); }
.form-grid { display: grid; gap: 12px; }
.days { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.days label { background: var(--bg0); border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: right; padding: 10px 8px; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.login-shell {
  min-height: calc(100vh - 40px);
  display: grid;
  place-items: center;
}
.login-card {
  width: min(420px, 100%);
  background: var(--bg1);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.stack { display: grid; gap: 12px; }
.stack label { display: grid; gap: 6px; text-align: right; }
.flash-wrap { margin-bottom: 12px; }
.flash { padding: 10px 12px; border-radius: 10px; margin-bottom: 8px; }
.flash-error { background: rgba(214, 69, 69, 0.15); border: 1px solid rgba(214, 69, 69, 0.35); }
.flash-ok { background: rgba(34, 160, 107, 0.15); border: 1px solid rgba(34, 160, 107, 0.35); }
.token-box {
  background: var(--bg0);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.online { color: #3dd68c; }
.offline { color: #ff7b72; }
.relay-on { color: #3dd68c; }
.relay-off { color: #ff7b72; }
@media (max-width: 640px) {
  .status-grid { grid-template-columns: 1fr; }
  .countdown { font-size: 2rem; }
  .topbar { padding: 12px; }
}