:root {
  --bg-start: #f8fbff;
  --bg-mid: #eef5ff;
  --bg-end: #f9fbff;
  --card-bg: rgba(255, 255, 255, 0.72);
  --card-border: rgba(255, 255, 255, 0.72);
  --card-shadow: 0 18px 40px rgba(148, 163, 184, 0.14), inset 0 1px rgba(255, 255, 255, 0.65);
  --accent: #10b981;
  --accent-light: rgba(16, 185, 129, 0.12);
  --accent-hover: #059669;
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.1);
  --ok: #10b981;
  --ok-light: rgba(16, 185, 129, 0.12);
  --text: #14314b;
  --text-secondary: #4a627d;
  --text-muted: #6c8199;
  --radius: 28px;
  --radius-sm: 16px;
  --radius-xs: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  color: var(--text);
  line-height: 1.5;
  background:
    radial-gradient(circle at top left, rgba(110, 231, 183, 0.28), transparent 26%),
    radial-gradient(circle at top right, rgba(96, 165, 250, 0.24), transparent 24%),
    linear-gradient(180deg, var(--bg-start), var(--bg-mid) 48%, var(--bg-end));
  padding: 32px 16px 100px;
}

body::before, body::after {
  content: "";
  position: fixed;
  width: 340px;
  height: 340px;
  border-radius: 999px;
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}
body::before { top: -80px; left: -60px; background: rgba(52, 211, 153, 0.18); }
body::after  { right: -80px; top: 120px; background: rgba(59, 130, 246, 0.14); }

main {
  position: relative;
  z-index: 1;
  width: min(1100px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ─── Hero ─── */
.hero {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 4px;
}
.hero-logo {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  flex-shrink: 0;
}
.hero-text h1 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.hero-text p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 520px;
}

/* ─── Glass Card ─── */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: var(--radius);
  padding: 24px;
}
.card-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* ─── Dashboard Grid ─── */
.dashboard {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 20px;
  align-items: start;
}

/* ─── Form Elements ─── */
label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
input, select, textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(201, 217, 235, 0.8);
  background: rgba(248, 251, 255, 0.85);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
input::placeholder { color: #a1b3c3; }
textarea { resize: vertical; min-height: 60px; font-size: 14px; line-height: 1.6; }

.row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  align-items: end;
}

/* ─── Buttons ─── */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
button:hover { transform: translateY(-1px); }
button:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px rgba(16, 185, 129, 0.2);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 14px 28px rgba(16, 185, 129, 0.28); }

.btn-secondary {
  background: rgba(148, 163, 184, 0.12);
  color: var(--text-secondary);
  border: 1px solid rgba(201, 217, 235, 0.6);
}
.btn-secondary:hover { background: rgba(148, 163, 184, 0.2); }

.btn-danger {
  background: var(--danger-light);
  color: var(--danger);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.18); }

.btn-icon {
  padding: 8px 12px;
  font-size: 18px;
  border-radius: var(--radius-xs);
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid rgba(201, 217, 235, 0.5);
  color: var(--text-secondary);
}

/* ─── Token Display ─── */
.code-display {
  padding: 28px 24px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(255,255,255,0.82), rgba(236,250,245,0.95));
  border: 1px solid rgba(16, 185, 129, 0.16);
  box-shadow: inset 0 1px rgba(255,255,255,0.75);
  font-size: clamp(40px, 8vw, 72px);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-align: center;
  color: var(--text);
  line-height: 1;
}
.code-display.inactive { color: #a1b3c3; }

.token-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 8px 0 14px;
}

/* ─── Progress Bar ─── */
.progress {
  height: 6px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.15);
  overflow: hidden;
}
.progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #3b82f6);
  width: 0%;
  transition: width 0.3s linear;
}

/* ─── Status Badges ─── */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.status.ok  { background: var(--ok-light);  color: var(--ok); }
.status.bad { background: var(--danger-light); color: var(--danger); }

/* ─── Meta Grid ─── */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.meta-pill {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(248, 251, 255, 0.85);
  border: 1px solid rgba(201, 217, 235, 0.7);
}
.meta-pill .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.meta-pill .value { font-size: 20px; font-weight: 700; color: var(--text); margin-top: 4px; }

/* ─── History Tags ─── */
.history-list { display: flex; flex-wrap: wrap; gap: 10px; }
.history-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(240, 249, 255, 0.95);
  border: 1px solid rgba(125, 211, 252, 0.4);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.history-tag:hover {
  background: rgba(220, 243, 255, 0.95);
  border-color: rgba(96, 165, 250, 0.5);
}
.history-tag .tag-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(148, 163, 184, 0.15);
  cursor: pointer;
  border: none;
  padding: 0;
  line-height: 1;
}
.history-tag .tag-delete:hover { background: var(--danger-light); color: var(--danger); transform: none; }
.history-tag.active {
  background: var(--accent-light);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--accent-hover);
  font-weight: 600;
}

.empty-hint {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* ─── QR Section ─── */
.qr-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  min-height: 200px;
  justify-content: center;
}
.qr-frame {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 0 0 1px rgba(220, 230, 240, 0.9);
  display: inline-block;
}
.qr-frame canvas, .qr-frame img { display: block; border-radius: 8px; }
#qr-video {
  width: 260px;
  height: 260px;
  border-radius: 12px;
  object-fit: cover;
  background: #000;
}
.qr-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* ─── Footer ─── */
.app-footer {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  padding: 0 16px 18px;
  pointer-events: none;
}
.footer-inner {
  max-width: min(calc(100vw - 24px), 520px);
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 30px rgba(148, 163, 184, 0.16);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-repo {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}
.footer-repo:hover { color: var(--text); }

/* ─── Bottom Grid ─── */
.bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ─── Action Group ─── */
.action-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.action-row button { flex: 1; min-width: 0; }

/* ─── Responsive ─── */
@media (max-width: 860px) {
  .dashboard { grid-template-columns: 1fr; }
  .bottom-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { padding: 16px 10px 96px; }
  .card { padding: 18px 14px; border-radius: 22px; }
  .code-display { padding: 20px 12px; font-size: clamp(32px, 12vw, 48px); }
  .meta-grid { grid-template-columns: 1fr; }
  .hero { flex-direction: column; align-items: flex-start; gap: 10px; }
}