:root {
  --bg: #f1f6ff;
  --surface: #fffffff0;
  --surface-strong: #ffffff;
  --text: #13233a;
  --muted: #53657d;
  --brand: #0e78f9;
  --brand-strong: #0c63cb;
  --accent: #20a874;
  --line: #d3e1f7;
  --shadow: 0 18px 45px rgba(12, 61, 126, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, #d7e9ff 0%, transparent 32%),
    radial-gradient(circle at 92% 85%, #d8fff0 0%, transparent 35%),
    linear-gradient(145deg, #eff5ff, #f6fffb 48%, #f0f3ff);
}

.page {
  width: min(980px, 92vw);
  margin: 48px auto;
  display: grid;
  gap: 18px;
}

.hero {
  position: relative;
  background: linear-gradient(132deg, #0f7cf3, #1a4ec8 52%, #188862);
  color: #fff;
  padding: clamp(22px, 4vw, 36px);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(11, 58, 124, 0.28);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -55px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff50, transparent 65%);
}

.hero-badge {
  margin: 0;
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: #ffffff24;
}

.hero h1 {
  margin: 10px 0 8px;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.04;
}

.hero p {
  margin: 0;
  max-width: 760px;
  color: #e6f0ff;
}

.panel {
  background: var(--surface);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: clamp(20px, 4vw, 36px);
}

.panel-head h2 {
  margin: 8px 0 6px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.12;
}

.eyebrow {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
  font-size: 12px;
}

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

.form {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field span {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  background: var(--surface-strong);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  background: var(--surface-strong);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px #0e78f920;
  outline: none;
}

select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px #0e78f920;
  outline: none;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.advanced {
  grid-column: 1 / -1;
  border: 1px solid #cfe0fa;
  border-radius: 14px;
  background: #f7fbff;
  padding: 10px 12px;
}

.advanced summary {
  cursor: pointer;
  user-select: none;
  font-weight: 700;
  color: #18487f;
}

.advanced-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
}

.btn:disabled,
.text-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.btn-primary {
  background: linear-gradient(100deg, #0f84ff, #0a69da);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(100deg, #0d7bf0, #095ebe);
}

.btn-secondary {
  background: #e8f1ff;
  color: #104487;
}

.btn-light {
  background: #eef8f3;
  color: #205f4b;
}

.usage {
  margin-top: 18px;
  background: #edf5ff;
  border: 1px solid #c8dcfa;
  border-radius: 12px;
  padding: 12px 14px;
  color: #22446f;
  font-size: 14px;
}

.meta {
  margin: 10px 2px 0;
  color: #36557b;
  font-size: 13px;
}

.share {
  margin-top: 16px;
  border: 1px solid #cfe0fa;
  border-radius: 16px;
  background: #f8fbff;
  padding: 12px;
}

.share-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.share-head h3 {
  margin: 0;
  font-size: 16px;
}

.share-head-sub {
  margin-top: 10px;
}

.share-link {
  margin-top: 10px;
  font-size: 13px;
  color: #1d3f69;
  background: #fff;
}

.qr-wrap {
  margin-top: 12px;
  border: 1px dashed #bfd6f8;
  border-radius: 12px;
  background: #fff;
  width: fit-content;
  padding: 8px;
}

.qr-container {
  width: 188px;
  height: 188px;
}

.qr-container img,
.qr-container canvas {
  display: block;
  width: 188px;
  height: 188px;
}

.usage code {
  background: #d8e8ff;
  padding: 2px 6px;
  border-radius: 6px;
}

.result-head {
  margin-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-head h2 {
  margin: 0;
  font-size: 18px;
}

.text-btn {
  border: 0;
  background: none;
  color: var(--brand-strong);
  font-weight: 700;
  cursor: pointer;
}

.output {
  margin: 10px 0 0;
  min-height: 320px;
  border-radius: 16px;
  border: 1px solid #cfe0fa;
  background: #0f1a2d;
  color: #d3f3ff;
  padding: 14px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
}

.links-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.links-panel h3 {
  margin: 0 0 12px;
  font-size: 17px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.link-card {
  text-decoration: none;
  color: inherit;
  background: #f7fbff;
  border: 1px solid #d6e5fb;
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.link-card strong {
  color: #113765;
}

.link-card span {
  color: #4d6283;
  font-size: 13px;
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: #9cc0f8;
  box-shadow: 0 8px 24px rgba(28, 82, 158, 0.12);
}

@media (max-width: 860px) {
  .form {
    grid-template-columns: 1fr;
  }

  .advanced-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    flex-wrap: wrap;
  }

  .btn {
    flex: 1 1 100%;
  }

  .link-grid {
    grid-template-columns: 1fr;
  }
}