:root {
  --bg-a: #081a1f;
  --bg-b: #0c3038;
  --text: #e8fbff;
  --muted: rgba(222, 246, 250, 0.86);
  --line: rgba(172, 251, 244, 0.24);
  --btn-a: #2ad0c9;
  --btn-b: #11808a;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 0% -10%, rgba(47, 214, 205, 0.16), transparent 58%),
    linear-gradient(160deg, var(--bg-a), var(--bg-b));
}

.share-page {
  padding: 22px 12px 30px;
}

.share-shell {
  width: min(920px, 100%);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(3, 22, 27, 0.52);
  box-shadow: 0 26px 54px rgba(0, 0, 0, 0.24);
  padding: 20px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
}

.hero p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 15px;
}

.canvas-wrap {
  margin-top: 16px;
  border-radius: 16px;
  border: 1px solid rgba(166, 248, 241, 0.18);
  background: rgba(2, 19, 23, 0.38);
  padding: 10px;
}

#cardCanvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  background: #0b5f68;
}

.editor {
  margin-top: 14px;
}

.editor label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 800;
  color: var(--muted);
}

.editor textarea {
  width: 100%;
  min-height: 84px;
  border-radius: 12px;
  border: 1px solid rgba(125, 199, 205, 0.34);
  padding: 12px;
  resize: vertical;
  font-size: 15px;
  line-height: 1.5;
  color: #13252a;
  background: #fff;
}

.actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
}

.btn {
  flex: 1;
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0) 38%),
    linear-gradient(135deg, var(--btn-a), var(--btn-b));
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, 0.2),
    inset 0 -2px 0 rgba(0, 0, 0, 0.12),
    0 16px 30px rgba(0, 0, 0, 0.22);
}

.status {
  min-height: 20px;
  margin: 10px 2px 2px;
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .share-page {
    padding: 12px 8px 20px;
  }

  .share-shell {
    border-radius: 16px;
    padding: 12px;
  }

  .actions {
    flex-direction: column;
  }
}