:root {
  --bg-0: #070510;
  --bg-1: #0d0a1e;
  --panel: rgba(13, 16, 32, 0.84);
  --panel-border: rgba(0, 255, 213, 0.28);
  --text: #def8ff;
  --muted: #91a5bd;
  --neon-cyan: #00ffd5;
  --neon-pink: #ff2ea6;
  --danger: #ff5c8a;
  --ok: #76ff88;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  font-family: "Chakra Petch", "Rajdhani", "IBM Plex Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1300px 700px at -12% -22%, rgba(0, 255, 213, 0.22), transparent 58%),
    radial-gradient(1200px 700px at 110% 130%, rgba(255, 46, 166, 0.2), transparent 54%),
    linear-gradient(135deg, var(--bg-0), var(--bg-1) 58%, #06030e);
  display: grid;
  place-items: center;
  padding: 18px;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.022) 0,
    rgba(255, 255, 255, 0.022) 1px,
    transparent 2px,
    transparent 4px
  );
  opacity: 0.38;
}

.card {
  width: min(980px, 100%);
  background: linear-gradient(165deg, rgba(12, 19, 36, 0.92), var(--panel));
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 22px;
  box-shadow:
    0 0 0 1px rgba(255, 46, 166, 0.2) inset,
    0 22px 48px rgba(0, 0, 0, 0.45),
    0 0 28px rgba(0, 255, 213, 0.2);
  backdrop-filter: blur(8px);
  animation: rise-in 320ms ease-out;
}

@keyframes rise-in {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

p {
  margin: 0;
  color: var(--muted);
}

.form-row {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

label {
  display: block;
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: #b4c6da;
}

input {
  width: 100%;
  padding: 12px 12px;
  background: rgba(7, 12, 23, 0.9);
  color: var(--text);
  border: 1px solid rgba(0, 255, 213, 0.26);
  border-radius: 12px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

input::placeholder {
  color: #65778d;
}

input:focus {
  border-color: var(--neon-cyan);
  box-shadow:
    0 0 0 2px rgba(0, 255, 213, 0.15),
    0 0 16px rgba(0, 255, 213, 0.14);
}

.btn {
  margin-top: 12px;
  padding: 11px 14px;
  border: 1px solid rgba(0, 255, 213, 0.5);
  border-radius: 12px;
  font-family: "Chakra Petch", "Rajdhani", "IBM Plex Sans", sans-serif;
  font-weight: 700;
  letter-spacing: .03em;
  color: #041318;
  background: linear-gradient(135deg, var(--neon-cyan), #00c4ff);
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 18px rgba(0, 255, 213, 0.35);
}

.btn:active {
  transform: translateY(0);
}

.btn.secondary {
  color: #ffd5ef;
  background: linear-gradient(135deg, rgba(255, 46, 166, 0.34), rgba(255, 46, 166, 0.12));
  border-color: rgba(255, 46, 166, 0.5);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: end;
}

.message {
  margin-top: 10px;
  min-height: 22px;
  font-size: 0.93rem;
}

.message.error { color: var(--danger); }
.message.ok { color: var(--ok); }

.result {
  margin-top: 18px;
  padding: 14px;
  background: rgba(5, 9, 19, 0.66);
  border: 1px solid rgba(0, 255, 213, 0.25);
  border-radius: 14px;
  display: none;
}

.history-panel {
  margin-top: 18px;
  padding: 14px;
  background: rgba(5, 9, 19, 0.66);
  border: 1px solid rgba(255, 46, 166, 0.25);
  border-radius: 14px;
}

.history-title {
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}

.history-empty {
  color: var(--muted);
  font-size: 0.93rem;
}

.history-list {
  display: grid;
  gap: 8px;
}

.history-item {
  width: 100%;
  text-align: left;
  background: rgba(7, 12, 23, 0.9);
  color: var(--text);
  border: 1px solid rgba(0, 255, 213, 0.2);
  border-radius: 10px;
  padding: 9px 10px;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 8px;
  align-items: center;
}

.history-item:hover {
  border-color: rgba(0, 255, 213, 0.5);
}

.history-user {
  font-weight: 700;
}

.history-port {
  color: #9fefff;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
}

.history-time {
  text-align: right;
  color: var(--muted);
  font-size: 0.86rem;
}

.grid {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 9px 14px;
  align-items: start;
}

.mono {
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  word-break: break-all;
  color: #ccf4ff;
}

.qr {
  margin-top: 14px;
  width: 280px;
  max-width: 100%;
  background: #fff;
  padding: 8px;
  border-radius: 9px;
  border: 1px solid rgba(0, 255, 213, 0.45);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.56);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 14px;
  z-index: 30;
}

.modal.show {
  display: flex;
}

.modal-card {
  width: min(760px, 100%);
  max-height: 92vh;
  overflow: auto;
  background: linear-gradient(165deg, rgba(12, 19, 36, 0.97), rgba(14, 18, 34, 0.97));
  border: 1px solid rgba(0, 255, 213, 0.32);
  border-radius: 14px;
  padding: 16px;
}

.modal-card h2 {
  margin: 0 0 10px;
}

.modal-close {
  margin: 0 0 10px auto;
  display: block;
  width: auto;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translate(-50%, 20px);
  background: rgba(255, 92, 138, 0.95);
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
  z-index: 50;
}

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

@media (max-width: 860px) {
  body { padding: 14px; }
  .card { padding: 16px; border-radius: 14px; }
  .row { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .grid { grid-template-columns: 1fr; }
  .history-item { grid-template-columns: 1fr; }
  .history-time { text-align: left; }
}

@media (max-width: 430px) {
  body { padding: 10px; }
  .card { padding: 14px; }
  input { padding: 11px 10px; }
  .btn { padding: 11px 12px; }
  .qr { width: 100%; }
}