:root {
  --bg-0: #0f1221;
  --bg-1: #1b2038;
  --accent: #ffb703;
  --accent-2: #00b4d8;
  --card: rgba(255, 255, 255, 0.08);
  --card-strong: rgba(255, 255, 255, 0.16);
  --text: #f7f7f2;
  --muted: #c6c3d1;
  --error: #ff5d5d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  min-height: 100vh;
  background: radial-gradient(circle at 20% 10%, rgba(0, 180, 216, 0.25), transparent 45%),
    radial-gradient(circle at 85% 15%, rgba(255, 183, 3, 0.25), transparent 40%),
    linear-gradient(135deg, var(--bg-0), var(--bg-1));
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.03) 0,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 12px
    );
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.35;
}

.app {
  position: relative;
  z-index: 1;
  padding: 48px 20px 64px;
  max-width: 1100px;
  margin: 0 auto;
}

.hero {
  text-align: center;
  margin-bottom: 32px;
  animation: fadeUp 0.8s ease-out;
}

.hero h1 {
  font-family: "Playfair Display", "Noto Serif SC", serif;
  font-size: clamp(2.1rem, 4vw, 3.4rem);
  margin: 8px 0 12px;
  letter-spacing: 0.02em;
}

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

.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 183, 3, 0.2);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.18em;
}

.content {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(14px);
  animation: fadeUp 0.9s ease-out;
}

.card-title {
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

textarea {
  width: 100%;
  min-height: 160px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  color: var(--text);
  padding: 14px;
  font-size: 0.95rem;
  line-height: 1.4;
  resize: vertical;
  outline: none;
}

textarea:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 2px rgba(0, 180, 216, 0.25);
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 12px;
}

button {
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  background: var(--card-strong);
  color: var(--text);
  transition: transform 0.2s ease, background 0.2s ease;
}

button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.25);
}

button.ghost {
  width: 100%;
  margin-top: 12px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.error {
  min-height: 18px;
  margin-top: 10px;
  color: var(--error);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.kv span {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.kv strong {
  font-size: 1rem;
  font-weight: 600;
}

.qr-card {
  text-align: center;
}

.qrcode {
  width: 220px;
  height: 220px;
  margin: 0 auto 12px;
  background: #fff;
  padding: 10px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

.raw-card pre {
  margin: 0;
  font-family: "IBM Plex Mono", "JetBrains Mono", monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-all;
}

.clash-row {
  display: flex;
  gap: 10px;
}

.clash-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 0.85rem;
}

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

@media (max-width: 640px) {
  .app {
    padding: 32px 16px 40px;
  }

  .qrcode {
    width: 180px;
    height: 180px;
  }

  .clash-row {
    flex-direction: column;
  }
}