* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(0, 255, 170, 0.12), transparent 20%),
    radial-gradient(circle at bottom left, rgba(0, 140, 255, 0.12), transparent 20%),
    #0b1220;
  color: #eaf2ff;
  min-height: 100vh;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 28px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(28, 229, 190, 0.12);
  color: #55f2cf;
  border: 1px solid rgba(85, 242, 207, 0.24);
  font-size: 14px;
  margin-bottom: 14px;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.2;
  color: #ffffff;
}

.hero p {
  margin: 0;
  color: #a7b7d4;
  font-size: 16px;
  line-height: 1.7;
}

.card {
  background: rgba(14, 22, 38, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 15px;
  margin-bottom: 10px;
  color: #dce7ff;
}

textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: #0f1728;
  color: #ffffff;
  padding: 16px;
  font-size: 15px;
  line-height: 1.7;
  outline: none;
  resize: vertical;
}

textarea:focus {
  border-color: rgba(85, 242, 207, 0.6);
  box-shadow: 0 0 0 3px rgba(85, 242, 207, 0.12);
}

.form-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

button {
  border: none;
  border-radius: 12px;
  padding: 13px 20px;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #25e3b4, #1ca7ff);
  color: #08111f;
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-1px);
  opacity: 0.96;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #d7e4ff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.status {
  min-height: 24px;
  font-size: 14px;
  margin-bottom: 18px;
  color: #9fd2ff;
}

.result-section {
  margin-top: 10px;
}

.result-header h2 {
  margin: 0 0 14px;
  font-size: 20px;
  color: #ffffff;
}

.result-box {
  min-height: 420px;
  border-radius: 18px;
  background: #0b1323;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 14px;
}

.placeholder {
  color: #8190ad;
  font-size: 15px;
}

.result-box img {
  width: 100%;
  max-width: 100%;
  border-radius: 14px;
  display: block;
}

.footer {
  text-align: center;
  margin-top: 18px;
  color: #7f90af;
  font-size: 13px;
}

@media (max-width: 768px) {
  .page {
    padding: 24px 14px 40px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .card {
    padding: 18px;
    border-radius: 18px;
  }

  .result-box {
    min-height: 300px;
  }
}