:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f9fbfe;
  --text-main: #172235;
  --text-subtle: #5c677a;
  --primary: #0d5ea6;
  --primary-hover: #0a4f8d;
  --danger: #c83b39;
  --border: #d7e0ec;
  --shadow: 0 16px 34px rgba(13, 34, 67, 0.08);
  --shadow-strong: 0 22px 44px rgba(13, 34, 67, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 12% 10%, #d9ecff 0%, transparent 32%),
    radial-gradient(circle at 86% 90%, #e8f3ea 0%, transparent 28%),
    var(--bg);
}

.page-shell {
  width: min(1400px, 94vw);
  margin: 2.4rem auto 3.5rem;
}

.page-header {
  margin-bottom: 1.25rem;
}

.eyebrow {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

h1 {
  margin: 0.35rem 0 0.55rem;
  font-family: "Merriweather", Georgia, serif;
  font-size: clamp(1.65rem, 3vw, 2.5rem);
}

.subtitle {
  margin: 0;
  color: var(--text-subtle);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.15rem 0 1.4rem;
}

.btn,
.text-btn {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-main);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: 0.16s ease;
  transition-property: background-color, border-color, color, transform, box-shadow;
}

.btn {
  padding: 0.55rem 0.9rem;
}

.text-btn {
  padding: 0.3rem 0.55rem;
  font-size: 0.88rem;
}

.btn:hover,
.text-btn:hover {
  border-color: #bbc9dc;
  background: #f3f7fd;
}

.btn:active,
.text-btn:active {
  transform: translateY(1px);
}

.btn-primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  border-color: var(--primary-hover);
  background: var(--primary-hover);
}

.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
  background: #fff8f8;
}

.btn-danger:hover {
  background: #ffecec;
}

.danger {
  color: var(--danger);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.empty-state {
  margin: 0;
  padding: 1rem 1.1rem;
  border: 1px dashed #bac9dd;
  border-radius: 12px;
  color: var(--text-subtle);
  background: #f8fbff;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.prompt-card {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  padding: 1rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-soft) 100%);
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.prompt-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 36px rgba(13, 34, 67, 0.13);
}

.prompt-card.dragging {
  opacity: 0.55;
  box-shadow: none;
}

.prompt-card.drag-over {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 94, 166, 0.15);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.7rem;
}

.title-wrap {
  min-width: 0;
}

.prompt-title {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
  word-break: break-word;
}

.category-tag {
  display: inline-block;
  margin-top: 0.45rem;
  padding: 0.16rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  background: #e7f1fb;
}

.head-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.prompt-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-subtle);
}

.drag-hint {
  white-space: nowrap;
}

.prompt-collapse {
  border: 1px solid var(--border);
  background: #f7fafc;
  border-radius: 10px;
  padding: 0.72rem;
}

.prompt-text {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.86rem;
  line-height: 1.55;
}

.card-input-area {
  margin-top: auto;
}

.textarea-label {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-size: 0.84rem;
  color: var(--text-subtle);
  font-weight: 700;
}

.user-input {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  border: 1px solid #c9d7e7;
  border-radius: 10px;
  padding: 0.65rem;
  font: inherit;
}

.user-input:focus,
.modal-form input:focus,
.modal-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 94, 166, 0.14);
}

.card-actions {
  margin-top: 0.62rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-copy {
  border-color: var(--primary);
  background: #f0f7ff;
  color: var(--primary);
}

.copy-status {
  min-height: 1.15em;
  font-size: 0.82rem;
  font-weight: 700;
  color: #13723a;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(16, 27, 47, 0.44);
  z-index: 20;
}

.modal[hidden] {
  display: none;
}

.modal-panel {
  width: min(640px, 100%);
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #ffffff;
  box-shadow: var(--shadow-strong);
  padding: 1rem;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.modal-head h2 {
  margin: 0;
  font-size: 1.14rem;
}

.modal-form {
  display: grid;
  gap: 0.45rem;
}

.modal-form label {
  margin-top: 0.28rem;
  font-size: 0.86rem;
  color: var(--text-subtle);
  font-weight: 700;
}

.modal-form input,
.modal-form textarea {
  width: 100%;
  border: 1px solid #c9d7e7;
  border-radius: 10px;
  padding: 0.56rem 0.65rem;
  font: inherit;
}

.modal-form textarea {
  resize: vertical;
  min-height: 180px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.55rem;
  margin-top: 0.6rem;
}

@media (max-width: 767px) {
  .page-shell {
    width: min(1400px, 95vw);
    margin-top: 1.6rem;
  }

  .prompt-meta {
    flex-direction: column;
    gap: 0.2rem;
  }

  .drag-hint {
    white-space: normal;
  }
}