/* ==========================================================================
   wgmanager — design tokens
   Chủ đề: bảng điều khiển mạng, tối, kỹ thuật, chính xác.
   Dấu hiệu riêng: "sonar ping" — vòng tròn lan toả từ chấm trạng thái
   của mỗi client mỗi khi có handshake gần đây, ẩn dụ cho việc "bắt tay".
   ========================================================================== */

:root {
  --bg-deep: #0b1220;
  --bg-panel: #121b2e;
  --bg-panel-alt: #17223a;
  --bg-hover: #1c2942;
  --border: #223049;
  --border-soft: #1a2740;
  --text-primary: #e7ecf5;
  --text-muted: #8695b0;
  --text-faint: #56637d;
  --signal: #4ade9c;
  --signal-dim: rgba(74, 222, 156, 0.18);
  --warn: #e8935a;
  --warn-dim: rgba(232, 147, 90, 0.16);
  --danger: #e86b6b;
  --danger-dim: rgba(232, 107, 107, 0.14);
  --accent: #5b8def;
  --accent-dim: rgba(91, 141, 239, 0.16);
  --accent-hover: #75a1f5;
  --radius: 10px;
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    radial-gradient(circle at 12% 8%, rgba(91, 141, 239, 0.07), transparent 40%),
    radial-gradient(circle at 88% 92%, rgba(74, 222, 156, 0.05), transparent 45%);
  min-height: 100vh;
}

a {
  color: inherit;
}

::selection {
  background: var(--accent-dim);
  color: var(--text-primary);
}

/* ---- layout shells ------------------------------------------------- */

.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 32px 32px;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
}

.auth-card.wide {
  max-width: 520px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.brand-mark .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px var(--signal-dim);
}

.brand-mark span {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 15px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.auth-card h1 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 6px;
}

.auth-card p.sub {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 26px;
  line-height: 1.5;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 13px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input::placeholder {
  color: var(--text-faint);
}

.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.field .hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-faint);
  font-family: var(--font-body);
}

.btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  border: none;
  border-radius: 8px;
  padding: 11px 18px;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease, opacity 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent);
  color: #0b1220;
  width: 100%;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.btn-danger-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--danger);
}

.btn-danger-ghost:hover {
  border-color: var(--danger);
  background: var(--danger-dim);
}

.error-banner {
  background: var(--danger-dim);
  border: 1px solid rgba(232, 107, 107, 0.35);
  color: #f2b8b8;
  font-size: 13px;
  padding: 10px 13px;
  border-radius: 8px;
  margin-bottom: 18px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 14px;
}

.divider-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.6;
}

/* ---- dashboard ------------------------------------------------------ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  background: rgba(11, 18, 32, 0.88);
  backdrop-filter: blur(10px);
  z-index: 20;
}

.topbar .right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 12px;
}

.shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.stat-card .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: 8px;
}

.stat-card .value {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
}

.stat-card .value.mono {
  font-family: var(--font-mono);
  font-size: 15px;
  word-break: break-all;
}

.stat-card .value.signal {
  color: var(--signal);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.panel-header h2 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin: 0;
}

.client-table {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.client-row {
  display: grid;
  grid-template-columns: 26px 1.6fr 1fr 1fr 0.9fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-soft);
}

.client-row.head {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-weight: 600;
  padding-top: 12px;
  padding-bottom: 12px;
}

.client-row:last-child {
  border-bottom: none;
}

.client-row:not(.head):hover {
  background: var(--bg-hover);
}

/* signature element: sonar ping status dot */
.ping {
  position: relative;
  width: 10px;
  height: 10px;
}

.ping .core {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-faint);
  position: relative;
  z-index: 2;
}

.ping.online .core {
  background: var(--signal);
}

.ping.online .ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1.5px solid var(--signal);
  opacity: 0;
  animation: sonar 2.2s ease-out infinite;
}

.ping.online .ring.delay {
  animation-delay: 1.1s;
}

@keyframes sonar {
  0% {
    transform: scale(0.4);
    opacity: 0.7;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

.client-name {
  font-weight: 600;
  font-size: 14px;
}

.client-note {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 2px;
}

.mono-cell {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.status-text {
  font-size: 12.5px;
  font-weight: 600;
}

.status-text.online {
  color: var(--signal);
}

.status-text.offline {
  color: var(--text-faint);
}

.status-text.disabled {
  color: var(--warn);
}

.status-text.locked {
  color: var(--danger);
}

.client-row.is-locked {
  background: var(--danger-dim);
}

.client-row.is-locked:hover {
  background: var(--danger-dim);
}

.lock-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: rgba(232, 107, 107, 0.22);
  color: var(--danger);
  font-size: 11px;
  cursor: help;
  margin-left: 6px;
  flex-shrink: 0;
}

.row-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
}

.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-panel-alt);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.icon-btn.danger:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.toggle {
  position: relative;
  width: 36px;
  height: 20px;
  border-radius: 20px;
  background: var(--border);
  cursor: pointer;
  transition: background 0.15s ease;
  flex-shrink: 0;
}

.toggle.on {
  background: var(--signal);
}

.toggle .knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #0b1220;
  transition: transform 0.15s ease;
}

.toggle.on .knob {
  transform: translateX(16px);
}

.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-faint);
}

.empty-state .glyph {
  font-family: var(--font-mono);
  font-size: 28px;
  margin-bottom: 10px;
  opacity: 0.6;
}

.empty-state p {
  margin: 4px 0;
  font-size: 13.5px;
}

/* ---- slide-over panel ------------------------------------------------ */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 10, 18, 0.6);
  backdrop-filter: blur(2px);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

.overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 420px;
  max-width: 92vw;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  z-index: 41;
  transform: translateX(100%);
  transition: transform 0.22s ease;
  overflow-y: auto;
  padding: 28px;
}

.drawer.open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.drawer-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0;
}

.close-x {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}

.qr-wrap {
  background: #fff;
  border-radius: 10px;
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 18px 0;
}

.qr-wrap img {
  width: 100%;
  max-width: 260px;
  display: block;
}

.config-preview {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 220px;
  overflow-y: auto;
  margin-bottom: 16px;
}

.drawer-actions {
  display: flex;
  gap: 10px;
  margin-top: 6px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 11px 18px;
  border-radius: 8px;
  font-size: 13px;
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  border-color: rgba(232, 107, 107, 0.4);
  color: #f2b8b8;
}

@media (max-width: 720px) {
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .client-row {
    grid-template-columns: 20px 1.4fr 1fr auto;
  }
  .client-row .col-status,
  .client-row .col-created {
    display: none;
  }
  .shell {
    padding: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ping.online .ring {
    animation: none;
    opacity: 0.5;
  }
}