:root {
  --bg: #0a0a0c;
  --bg-elev: #141417;
  --bg-elev-2: #1b1b20;
  --border: #26262c;
  --border-strong: #34343c;
  --text: #ececf1;
  --text-dim: #9a9aa5;
  --text-faint: #6b6b75;
  --green: #22c55e;
  --green-dim: #16351f;
  --red: #ef4444;
  --red-dim: #3a1a1c;
  --amber: #f59e0b;
  --accent: #6366f1;
  --accent-hover: #7275f5;
  --radius: 14px;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 50% -200px, #16161c 0%, var(--bg) 55%);
  color: var(--text);
  font-family: 'Inter', 'IBM Plex Sans Thai', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#app { max-width: 860px; margin: 0 auto; padding: 24px 20px 80px; }

/* ---- topbar ---- */
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 38px; height: 38px; border-radius: 10px; display: block; flex: none;
}
.brand-title { font-weight: 700; font-size: 16px; letter-spacing: -.01em; }
.brand-sub { color: var(--text-faint); font-size: 12px; }
.topbar-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }

/* ---- buttons ---- */
.btn {
  font: inherit; font-weight: 500; cursor: pointer; border: 1px solid transparent;
  border-radius: 9px; padding: 8px 14px; transition: .15s; color: var(--text);
  background: transparent;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: var(--bg-elev); border-color: var(--border); color: var(--text-dim); }
.btn-ghost:hover { border-color: var(--border-strong); color: var(--text); }
.btn-danger-ghost { color: var(--red); border-color: transparent; }
.btn-danger-ghost:hover { background: var(--red-dim); }
.btn-icon { display: inline-flex; align-items: center; gap: 7px; }
.btn-icon svg { display: block; margin-top: -1px; }

/* ---- hero ---- */
.hero {
  display: flex; align-items: center; gap: 18px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px; margin-bottom: 24px;
}
.hero-icon { width: 44px; height: 44px; border-radius: 12px; flex: none; display: grid; place-items: center; font-size: 22px; }
.hero-icon.ok { background: var(--green-dim); }
.hero-icon.bad { background: var(--red-dim); }
.hero-icon.pending { background: #2a2a30; }
.hero-text { flex: 1; }
.hero-text h1 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.hero-text p { margin: 2px 0 0; color: var(--text-dim); font-size: 13px; }
.hero-meta { display: flex; gap: 22px; }
.hero-stat { text-align: center; }
.hero-stat span { display: block; font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.hero-stat label { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .04em; }

/* ---- monitor cards ---- */
.monitor-list { display: flex; flex-direction: column; gap: 12px; }
.monitor {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px; transition: border-color .15s;
}
.monitor:hover { border-color: var(--border-strong); }
.monitor-top { display: flex; align-items: center; gap: 12px; }
.status-dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.status-dot.up { background: var(--green); box-shadow: 0 0 10px rgba(34,197,94,.6); }
.status-dot.down { background: var(--red); box-shadow: 0 0 10px rgba(239,68,68,.6); animation: pulse 1.4s infinite; }
.status-dot.pending { background: var(--text-faint); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.monitor-name { font-weight: 600; font-size: 15px; }
.type-tag {
  font-family: var(--mono); font-size: 10px; font-weight: 600; letter-spacing: .04em;
  color: var(--text-faint); border: 1px solid var(--border); border-radius: 5px;
  padding: 1px 5px; margin-left: 6px; vertical-align: middle; position: relative; top: -1px;
}
.monitor-target { color: var(--text-faint); font-size: 12px; font-family: var(--mono); margin-top: 2px; }
.monitor-head-main { flex: 1; min-width: 0; }
.monitor-head-main .monitor-target { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badge {
  font-size: 11px; padding: 3px 8px; border-radius: 6px; font-weight: 600; letter-spacing: .02em;
}
.badge.up { color: var(--green); background: var(--green-dim); }
.badge.down { color: var(--red); background: var(--red-dim); }
.badge.pending { color: var(--text-dim); background: #2a2a30; }

.monitor-actions { display: flex; gap: 4px; opacity: 0; transition: .15s; }
.monitor:hover .monitor-actions { opacity: 1; }
.icon-btn {
  background: transparent; border: none; color: var(--text-faint); cursor: pointer;
  padding: 5px 7px; border-radius: 7px; font-size: 13px;
}
.icon-btn:hover { background: var(--bg-elev-2); color: var(--text); }

/* uptime bar strip */
.bars { display: flex; gap: 3px; margin-top: 14px; height: 34px; align-items: stretch; }
.bar { flex: 1 1 0; border-radius: 3px; min-width: 2px; background: #2a2a30; transition: .1s; }
.bar.up { background: var(--green); }
.bar.down { background: var(--red); }
.bar:hover { transform: scaleY(1.12); }

/* bar hover tooltip */
.bar-tip {
  position: fixed; z-index: 200; pointer-events: none;
  transform: translate(-50%, -100%); margin-top: -9px;
  background: var(--bg-elev-2); border: 1px solid var(--border-strong);
  border-radius: 9px; padding: 8px 11px; box-shadow: 0 10px 30px rgba(0,0,0,.55);
  font-size: 12px; line-height: 1.5; max-width: 280px;
}
.bar-tip .tip-time { color: var(--text-faint); font-size: 11px; white-space: nowrap; }
.bar-tip .tip-row { display: flex; align-items: center; gap: 8px; }
.bar-tip .tip-status { font-weight: 600; }
.bar-tip .tip-status.up { color: var(--green); }
.bar-tip .tip-status.down { color: var(--red); }
.bar-tip .tip-status::before { content: '●'; margin-right: 5px; }
.bar-tip .tip-ms { color: var(--text-dim); font-variant-numeric: tabular-nums; }
.bar-tip .tip-cause {
  color: var(--red); font-family: var(--mono); font-size: 11px; margin-top: 3px;
  padding-top: 3px; border-top: 1px solid var(--border); white-space: normal;
}

.monitor-foot {
  display: flex; justify-content: space-between; margin-top: 12px;
  color: var(--text-dim); font-size: 12px; font-variant-numeric: tabular-nums;
}
.monitor-foot .metrics { display: flex; gap: 18px; }
.monitor-foot b { color: var(--text); font-weight: 600; }
.down-note { color: var(--red); font-size: 12px; margin-top: 10px; }
.down-note code { font-family: var(--mono); background: var(--red-dim); padding: 1px 5px; border-radius: 4px; }

.empty { text-align: center; color: var(--text-faint); padding: 60px 20px; }
.empty h3 { color: var(--text-dim); font-weight: 600; }

/* ---- footer ---- */
.footer { display: flex; justify-content: space-between; margin-top: 28px; color: var(--text-faint); font-size: 12px; }

/* ---- modal ---- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.65); backdrop-filter: blur(4px);
  display: grid; place-items: center; z-index: 50; padding: 20px;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--bg-elev); border: 1px solid var(--border-strong);
  border-radius: 16px; width: 100%; max-width: 540px; max-height: 90vh; overflow: auto;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 22px 0; }
.modal-head h2 { margin: 0; font-size: 17px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--text-faint); font-size: 24px; cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 18px 22px 22px; display: flex; flex-direction: column; gap: 14px; }
.modal-body label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--text-dim); font-weight: 500; min-width: 0; }
.modal-body input, .modal-body select {
  font: inherit; background: var(--bg); border: 1px solid var(--border);
  border-radius: 9px; padding: 9px 11px; color: var(--text); outline: none; transition: .15s;
  width: 100%; min-width: 0;
}
.modal-body input:focus, .modal-body select:focus { border-color: var(--accent); }
.modal-body small { color: var(--text-faint); font-weight: 400; font-size: 11px; }
.modal-body small code, .modal-body code { font-family: var(--mono); background: var(--bg-elev-2); padding: 1px 5px; border-radius: 4px; }
.row { display: flex; gap: 12px; }
.row > label { flex: 1; min-width: 0; }
.row > label.grow { flex: 2; }
.checkbox { flex-direction: row !important; align-items: center; gap: 8px !important; color: var(--text) !important; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--accent); }
.modal-foot { display: flex; align-items: center; gap: 10px; margin-top: 6px; }
.modal-foot .spacer { flex: 1; }
.hint { font-size: 12px; color: var(--text-faint); }

/* ---- toast ---- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--bg-elev-2); border: 1px solid var(--border-strong);
  padding: 11px 18px; border-radius: 10px; font-size: 13px; z-index: 100;
  box-shadow: 0 10px 30px rgba(0,0,0,.5);
}
.toast.ok { border-color: var(--green); }
.toast.err { border-color: var(--red); }

/* ---- responsive ---- */
@media (max-width: 720px) {
  .monitor-foot { flex-direction: column; gap: 6px; align-items: flex-start; }
  .monitor-foot .metrics { flex-wrap: wrap; gap: 6px 16px; }
}

@media (max-width: 600px) {
  #app { padding: 18px 16px 56px; }

  /* keep the header compact: no forced full-width action row (was pushing a blank gap) */
  .topbar { flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
  .topbar-actions { flex-wrap: wrap; }
  .topbar-actions .btn { flex: 1 1 auto; justify-content: center; text-align: center; }

  .hero { gap: 16px; padding: 18px 20px; margin-bottom: 12px; }
  .hero-icon { width: 40px; height: 40px; font-size: 20px; }
  .hero-text h1 { font-size: 19px; }

  .monitor-list { gap: 12px; }
  .monitor { padding: 16px 18px; }
  .monitor-actions { opacity: 1; }
  .bars { height: 30px; gap: 3px; margin-top: 12px; }
  .monitor-foot { margin-top: 12px; }

  .footer { flex-direction: column; gap: 4px; margin-top: 20px; }

  .row { flex-direction: column; gap: 12px; }
  .modal-body { padding: 16px 18px 20px; }
  .modal-foot { flex-wrap: wrap; }
  .modal-foot .btn { flex: 1 1 auto; }
  .modal-foot .spacer { display: none; }
  #btn-delete { flex-basis: 100%; }
}