/* =============================================================================
   SHARED CYBERPUNK / DARK NEON THEME — dùng chung cho admin + landing
   ============================================================================= */
:root {
  --bg:      #0b0f0e;
  --bg2:     #11181a;
  --bg3:     #0f1517;
  --line:    #1d2a2a;
  --line2:   #2a3a3a;
  --text:    #d8f5e1;
  --muted:   #6b8884;
  --neon:    #22c55e;
  --neon-2:  #4ade80;
  --neon-d:  #16a34a;
  --warn:    #f59e0b;
  --danger:  #ef4444;
  --info:    #38bdf8;
  --shadow:  0 6px 0 var(--line);
  --shadow-n: 0 0 0 2px var(--neon), 0 0 18px rgba(34, 197, 94, .35);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 14px/1.55 "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  background: radial-gradient(1200px 600px at 50% -100px, rgba(34, 197, 94, 0.10), transparent 60%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--neon-2); text-decoration: none; }
a:hover { text-decoration: underline; }
button, .btn {
  font: 700 12px "JetBrains Mono", monospace;
  background: var(--bg2);
  color: var(--text);
  border: 2px solid var(--line);
  padding: 9px 14px;
  border-radius: 4px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all .1s;
  letter-spacing: .3px;
}
button:hover, .btn:hover { transform: translateY(2px); box-shadow: 0 4px 0 var(--line); background: var(--hover, #152021); }
button:active, .btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--line); }
button.primary, .btn.primary { background: linear-gradient(180deg, #16a34a, #0e7c34); color: #f0fff4; border-color: #0e7c34; }
button.danger, .btn.danger  { background: linear-gradient(180deg, #ef4444, #991b1b); color: #fff; border-color: #991b1b; }
button.warn,   .btn.warn    { background: linear-gradient(180deg, #f59e0b, #b45309); color: #fff; border-color: #b45309; }
input, select, textarea {
  font: 600 13px "JetBrains Mono", monospace;
  background: var(--bg3);
  color: var(--text);
  border: 2px solid var(--line);
  padding: 10px 12px;
  border-radius: 4px;
  outline: none;
  width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--neon); box-shadow: 0 0 0 2px rgba(34, 197, 94, .25); }
label { display: block; font-size: 11px; color: var(--muted); margin: 10px 0 4px; text-transform: uppercase; letter-spacing: 1px; }
.card {
  background: var(--bg2);
  border: 2px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.card-title {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 1.4px;
  margin: 0 0 12px;
}
.grid { display: grid; gap: 14px; }
.row  { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.tag { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; border: 1px solid; }
.tag.green  { color: var(--neon-2); border-color: var(--neon-d); }
.tag.red    { color: var(--danger); border-color: #7f1d1d; }
.tag.yellow { color: var(--warn); border-color: #92400e; }
.tag.blue   { color: var(--info); border-color: #075985; }
.tag.gray   { color: var(--muted); border-color: var(--line2); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); font-size: 12px; }
th { color: var(--muted); font-weight: 700; text-transform: uppercase; font-size: 10px; letter-spacing: 1px; }
tr:hover td { background: rgba(34, 197, 94, .04); }

/* Switch */
.switch { position: relative; display: inline-block; width: 48px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; inset: 0; background: var(--bg3); border: 2px solid var(--line); border-radius: 24px; transition: .15s; }
.slider::before { position: absolute; content: ""; height: 14px; width: 14px; left: 3px; top: 3px; background: var(--muted); border-radius: 50%; transition: .15s; }
.switch input:checked + .slider { background: rgba(34, 197, 94, .15); border-color: var(--neon-d); }
.switch input:checked + .slider::before { transform: translateX(22px); background: var(--neon); }

/* Toast */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--bg2); border: 2px solid var(--neon-d); color: var(--text);
  padding: 10px 16px; border-radius: 4px; font-size: 12px; font-weight: 700;
  box-shadow: 0 0 16px rgba(34, 197, 94, .35);
  opacity: 0; pointer-events: none; transition: all .2s; z-index: 9999;
}
#toast.show { opacity: 1; bottom: 36px; }
#toast.err  { border-color: var(--danger); box-shadow: 0 0 16px rgba(239, 68, 68, .35); }

/* Banner */
.banner { padding: 10px 16px; font-size: 13px; font-weight: 700; text-align: center; border-bottom: 2px solid; }
.banner.info     { background: rgba(56, 189, 248, .12); color: #7dd3fc; border-color: #075985; }
.banner.warning  { background: rgba(245, 158, 11, .14); color: #fcd34d; border-color: #92400e; }
.banner.emergency{ background: rgba(239, 68, 68, .14); color: #fca5a5; border-color: #7f1d1d; animation: blink 1.6s ease-in-out infinite; }
@keyframes blink { 50% { opacity: .65; } }

/* Layout */
.brand-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand-header .logo { display: flex; align-items: center; gap: 10px; font-weight: 800; cursor: pointer; }
.brand-header .logo img { width: 28px; height: 28px; }
.brand-header .nav-link-top { background: var(--bg2); color: var(--text); border: 2px solid var(--line); padding: 7px 12px; font: 700 11px "JetBrains Mono", monospace; text-decoration: none; border-radius: 4px; box-shadow: 0 3px 0 var(--line); cursor: pointer; }
.brand-header .nav-link-top:hover { background: #152021; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.4px; margin: 22px 0 12px; }
.metric { display: flex; flex-direction: column; gap: 4px; }
.metric .v { font-size: 26px; font-weight: 800; color: var(--neon-2); }
.metric .l { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.2px; }
.tabs { display: flex; gap: 6px; border-bottom: 2px solid var(--line); margin: 14px 0 18px; flex-wrap: wrap; }
.tab  { padding: 9px 14px; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; font-size: 12px; font-weight: 700; }
.tab.active { color: var(--neon-2); border-bottom-color: var(--neon); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px; background: var(--bg3); border: 1px solid var(--line); border-radius: 99px; font-size: 10px; color: var(--muted); }
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.chip .dot.on { background: var(--neon); box-shadow: 0 0 6px var(--neon); }
.chip .dot.off { background: var(--danger); }
.chip .dot.maint { background: var(--warn); }
@media (max-width: 720px) {
  .container { padding: 0 12px; }
  th:nth-child(2), td:nth-child(2),
  th:nth-child(4), td:nth-child(4) { display: none; }
}