:root {
  --accent: #14b8a6;
  --accent-strong: #0f766e;
  --accent-soft: #ccfbf1;
  --blue: #2563eb;
  --green: #059669;
  --orange: #d97706;
  --red: #dc2626;
  --page-bg: #f4fbfa;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-soft: #f8fbfd;
  --line: #d9e8e6;
  --line-strong: #b9d7d2;
  --text: #172033;
  --text-soft: #526174;
  --text-dim: #78869a;
  --shadow: 0 18px 45px rgba(21, 94, 117, 0.11);
  --section-gap: 22px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background:
    linear-gradient(180deg, rgba(236, 253, 245, 0.96), rgba(239, 246, 255, 0.96)),
    linear-gradient(90deg, rgba(20, 184, 166, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(20, 184, 166, 0.08) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  padding: 24px;
  position: relative;
}

body.centered {
  align-items: center;
  display: flex;
  justify-content: center;
}

body::before,
body::after,
.scanline {
  display: none;
}

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

.container,
.shell {
  margin: 0 auto;
  max-width: 1000px;
  position: relative;
  width: 100%;
  z-index: 1;
}

.shell {
  padding: 10px 0 44px;
}

.container.wide,
.shell.wide {
  max-width: 1400px;
}

.header {
  animation: fadeInDown 0.45s ease;
  margin-bottom: 28px;
  text-align: center;
}

.header h1 {
  color: #0f766e;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: 0;
  margin-bottom: 10px;
}

.header p,
.section-title p,
.data-header p,
.status,
.hint {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.6;
}

.card,
.panel,
.stat-card,
.message,
.mini-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.card {
  animation: fadeIn 0.35s ease;
  padding: 36px 42px;
}

.panel {
  animation: fadeIn 0.35s ease;
  padding: 28px;
}

.workspace {
  display: grid;
  gap: var(--section-gap);
  margin-top: var(--section-gap);
}

.workspace.hidden,
.hidden {
  display: none;
}

.section-title,
.data-header {
  margin-bottom: 20px;
}

.tabs {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px;
}

.tab-button {
  border-color: transparent;
  color: var(--text-soft);
  flex: 0 0 auto;
  min-height: 40px;
  padding: 0 16px;
}

.tab-button:hover {
  background: #f0fdfa;
  border-color: transparent;
  color: var(--accent-strong);
}

.tab-button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.section-title h2,
.panel h2,
.data-title {
  color: #0f766e;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0;
  margin-bottom: 8px;
}

.data-header {
  align-items: flex-start;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
}

.header-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.inline-form,
.actions,
.buttons {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

input,
select,
textarea {
  background: #ffffff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  min-height: 46px;
  padding: 0 14px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

textarea {
  min-height: 120px;
  padding: 14px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  background: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.15);
  outline: none;
}

input[readonly] {
  background: #f1f8f7;
  color: var(--text);
}

input::placeholder,
textarea::placeholder {
  color: #9aa8b6;
}

.inline-form input,
.inline-form select {
  flex: 1 1 260px;
}

label span {
  color: var(--text);
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

label input,
label select {
  width: 100%;
}

.wide-field {
  grid-column: 1 / -1;
}

.btn,
.link-btn,
button {
  align-items: center;
  background: #ffffff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text-soft);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  gap: 8px;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  position: relative;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease, transform 0.18s ease;
  white-space: nowrap;
}

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

.btn-primary:hover:not(:disabled),
.primary:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.18);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  border-color: var(--line-strong);
  color: var(--text-soft);
}

.btn-secondary:hover:not(:disabled) {
  background: #f0fdfa;
  border-color: var(--accent);
  color: var(--accent-strong);
}

.btn-small {
  font-size: 13px;
  min-height: 34px;
  padding: 0 12px;
}

button:disabled,
.btn:disabled {
  background: #f2f5f7;
  color: #9aa8b6;
  cursor: not-allowed;
  opacity: 1;
  transform: none;
}

.btn span,
button span {
  align-items: center;
  display: inline-flex;
  gap: 8px;
}

.mono,
.card-code {
  font-family: "Courier New", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0;
}

.result-grid,
.generate-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 18px;
}

.generate-grid {
  grid-template-columns: 110px repeat(3, minmax(0, 1fr));
}

.generate-grid button {
  align-self: end;
}

.status {
  margin-top: 12px;
}

.status[data-kind="error"] { color: var(--red); }
.status[data-kind="ok"] { color: var(--green); }
.status[data-kind="warn"] { color: var(--orange); }

.notice {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  border-radius: 8px;
  color: var(--accent-strong);
  font-size: 14px;
  line-height: 1.55;
  margin-bottom: 14px;
  padding: 12px 14px;
}

.alert {
  background: #ffffff;
  border: 1px solid;
  border-radius: 8px;
  display: none;
  margin-bottom: 18px;
  padding: 13px 16px;
}

.alert.show { display: block; }
.alert-success { background: #ecfdf5; border-color: #a7f3d0; color: var(--green); }
.alert-error { background: #fef2f2; border-color: #fecaca; color: var(--red); }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: var(--orange); }

.badge,
.table-status {
  align-items: center;
  background: #eef8ff;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  color: var(--blue);
  display: inline-flex;
  font-size: 13px;
  font-weight: 800;
  min-height: 30px;
  padding: 5px 12px;
}

.badge.ok,
.table-status.valid {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: var(--green);
}

.badge.warn,
.table-status.redeemed {
  background: #fffbeb;
  border-color: #fde68a;
  color: var(--orange);
}

.badge.danger,
.table-status.invalid,
.table-status.disabled {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--red);
}

.message-list {
  display: grid;
  gap: 12px;
}

.message {
  background: #f8fbfd;
  box-shadow: none;
  padding: 16px;
}

.message strong {
  color: var(--green);
  display: block;
  font-size: 28px;
  margin-bottom: 8px;
}

.message p {
  color: var(--text-soft);
  line-height: 1.55;
  margin-top: 5px;
}

.empty {
  background: #f8fbfd;
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  color: var(--text-dim);
  padding: 18px;
}

.code-output {
  background: #f8fbfd;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-family: "Courier New", monospace;
  line-height: 1.55;
  margin-top: 16px;
  min-height: 100px;
  overflow: auto;
  padding: 16px;
  white-space: pre-wrap;
}

.table-wrap,
.table-container {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
}

.pagination {
  align-items: center;
  color: var(--text-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 14px;
}

.pagination span {
  font-size: 14px;
  font-weight: 700;
}

table {
  background: #ffffff;
  border-collapse: collapse;
  min-width: 900px;
  width: 100%;
}

thead {
  background: #f1f8f7;
}

th {
  border-bottom: 1px solid var(--line);
  color: #0f766e;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  padding: 14px;
  text-align: left;
  text-transform: none;
}

td {
  border-bottom: 1px solid #edf3f5;
  color: var(--text-soft);
  font-size: 14px;
  padding: 14px;
}

tr { transition: background 0.18s ease; }
tr:hover { background: #f8fbfd; }

.detail-box {
  display: grid;
  gap: 18px;
}

.detail-section h3 {
  color: #0f766e;
  font-size: 17px;
  margin-bottom: 10px;
}

.mini-list {
  display: grid;
  gap: 10px;
}

.mini-item {
  background: #f8fbfd;
  box-shadow: none;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.55;
  padding: 12px;
}

.checkbox-row {
  align-items: center;
  display: inline-flex;
  gap: 8px;
  min-height: 46px;
  padding: 0 4px;
  white-space: nowrap;
}

.checkbox-row input {
  accent-color: var(--accent);
  height: 18px;
  min-height: 18px;
  width: 18px;
}

.checkbox-row span {
  color: var(--text-soft);
  font-size: 14px;
  margin: 0;
}

@media (max-width: 768px) {
  body {
    padding: 18px 14px;
  }

  body.centered {
    align-items: flex-start;
  }

  .header {
    margin-bottom: 22px;
  }

  .header h1 {
    font-size: 32px;
  }

  .header p {
    font-size: 14px;
  }

  .card,
  .panel {
    padding: 24px 18px;
  }

  .inline-form,
  .actions,
  .data-header {
    align-items: stretch;
    flex-direction: column;
  }

  .tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .pagination {
    align-items: stretch;
    flex-direction: column;
  }

  .result-grid,
  .generate-grid {
    grid-template-columns: 1fr;
  }

  .btn,
  button,
  .inline-form input,
  .inline-form select {
    width: 100%;
  }

  th,
  td {
    min-width: 120px;
  }
}