:root {
  --bg: #f4f7fb;
  --bg-soft: #eef2f8;
  --card: #ffffff;
  --card-hover: #f8fafc;
  --line: rgba(15, 23, 42, 0.1);
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --primary-2: #3b82f6;
  --danger: #e11d48;
  --ok: #059669;
  --warn: #d97706;
  --shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --radius: 16px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1000px 520px at 8% -8%, rgba(37, 99, 235, 0.12) 0%, transparent 55%),
    radial-gradient(900px 480px at 100% 0%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--primary-2); }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  min-height: 100vh;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.brand { text-align: center; margin-bottom: 24px; }
.brand-icon { font-size: 40px; margin-bottom: 8px; }
.brand h1 { margin: 0 0 6px; font-size: 24px; font-weight: 700; color: var(--text); }
.footnote { margin-top: 18px; font-size: 12px; text-align: center; line-height: 1.5; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.03);
}
.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.logo {
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--text);
}
.topbar nav { display: flex; gap: 8px; flex: 1; }
.topbar nav a {
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-size: 14px;
}
.topbar nav a:hover, .topbar nav a.active {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.08);
  text-decoration: none;
}
.user-area { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.inline-form { display: inline; margin: 0; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}
.container.narrow { max-width: 720px; }

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}
.page-head h1 { margin: 0 0 6px; font-size: 28px; color: var(--text); }
.page-head p { margin: 0; }
.page-head-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.view-toggle {
  display: inline-flex;
  padding: 3px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.view-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 9px;
  cursor: pointer;
  transition: .15s ease;
}
.view-btn:hover { color: var(--text); background: var(--bg-soft); }
.view-btn.active {
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary);
  box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.22);
}
.view-icon { font-size: 14px; line-height: 1; opacity: 0.9; }

.form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 14px;
  color: var(--muted);
}
.form input, .form select, .form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.form input::placeholder,
.form textarea::placeholder {
  color: #94a3b8;
}
.form input:focus, .form select:focus, .form textarea:focus {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}
.form textarea { resize: vertical; min-height: 90px; font-family: ui-monospace, Consolas, monospace; }

.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
}
.grid-form .full { grid-column: 1 / -1; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: var(--bg-soft);
  color: var(--text);
  transition: .15s ease;
}
.btn:hover { filter: brightness(0.98); text-decoration: none; background: #e2e8f0; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #1d4ed8);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
}
.btn-primary:hover {
  filter: brightness(1.05);
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
}
.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--muted);
}
.btn-ghost:hover {
  color: var(--text);
  background: var(--bg-soft);
  border-color: rgba(15, 23, 42, 0.16);
}
.btn-sm { padding: 6px 10px; font-size: 13px; border-radius: 9px; }
.btn-block { width: 100%; padding: 12px; margin-top: 6px; }
.btn-icon {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.btn-icon.danger:hover { color: var(--danger); }

.alert {
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 14px;
}
.alert-error {
  background: #fff1f2;
  border: 1px solid #fecdd3;
  color: #be123c;
}
.alert-ok {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #047857;
}

.code-grid {
  display: grid;
  gap: 16px;
}
.code-grid.view-grid {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.code-grid.view-list {
  grid-template-columns: 1fr;
  gap: 10px;
  max-width: 820px;
}

.code-card {
  display: flex;
  align-items: stretch;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 14px 12px 6px;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, background .15s, border-color .15s, opacity .15s, box-shadow .15s;
  touch-action: manipulation;
}
.code-card:hover {
  background: var(--card-hover);
  border-color: rgba(37, 99, 235, 0.18);
  box-shadow: var(--shadow);
}
.code-grid.view-grid .code-card:hover {
  transform: translateY(-2px);
}
.code-card.dragging {
  opacity: 0.45;
  border-color: rgba(37, 99, 235, 0.45);
  /* 拖动时不参与命中检测，避免 elementFromPoint 总是点到自己 */
  pointer-events: none;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.18);
  z-index: 5;
}
.code-card.drag-over-before {
  box-shadow: inset 3px 0 0 var(--primary), var(--shadow-sm);
}
.code-card.drag-over-after {
  box-shadow: inset -3px 0 0 var(--primary), var(--shadow-sm);
}
.code-grid.view-list .code-card.drag-over-before {
  box-shadow: inset 0 3px 0 var(--primary), var(--shadow-sm);
}
.code-grid.view-list .code-card.drag-over-after {
  box-shadow: inset 0 -3px 0 var(--primary), var(--shadow-sm);
}

.drag-handle {
  flex: 0 0 auto;
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: -2px;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  border-radius: 8px;
  opacity: 0.55;
  transition: opacity .15s, background .15s, color .15s;
}
.drag-handle:hover,
.code-card:hover .drag-handle {
  opacity: 1;
  color: var(--text);
  background: var(--bg-soft);
}
.drag-handle:active,
body.is-sorting .drag-handle {
  cursor: grabbing;
}
body.is-sorting {
  user-select: none;
  cursor: grabbing;
}
body.is-sorting .code-card {
  cursor: grabbing;
}

.code-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.code-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
}
.code-label {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.35;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  min-height: 38px;
  width: 100%;
}
.code-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 4px 0 12px;
  min-width: 0;
}
.code-value {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0.18em;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  margin: 0;
  cursor: pointer;
  user-select: all;
  color: #0f172a;
  min-width: 0;
  flex: 1;
}
.code-value:hover { color: var(--primary); }
.code-value:active { color: var(--primary-2); }

.btn-copy {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid rgba(37, 99, 235, 0.28);
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  border-radius: 10px;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: .15s ease;
  white-space: nowrap;
}
.btn-copy:hover {
  background: rgba(37, 99, 235, 0.14);
  border-color: rgba(37, 99, 235, 0.45);
}
.btn-copy:active {
  transform: scale(0.97);
}
.btn-copy.copied {
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #047857;
}
.btn-copy-icon {
  font-size: 14px;
  line-height: 1;
  opacity: 0.9;
}

.code-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.progress-wrap {
  flex: 1;
  height: 6px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--ok), var(--primary));
  border-radius: 99px;
  transform-origin: left center;
  transition: background-color .2s;
}
.progress-bar.warn { background: linear-gradient(90deg, var(--warn), #f59e0b); }
.progress-bar.danger { background: linear-gradient(90deg, var(--danger), #fb7185); }
.remain {
  font-size: 12px;
  color: var(--muted);
  min-width: 28px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* 列表模式：横向紧凑 */
.code-grid.view-list .code-card {
  padding: 10px 12px 10px 4px;
  border-radius: 14px;
}
.code-grid.view-list .code-card-body {
  flex-direction: row;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.code-grid.view-list .code-card-top {
  flex: 1 1 160px;
  margin-bottom: 0;
  min-width: 0;
  align-items: center;
}
.code-grid.view-list .code-label {
  min-height: 0;
  -webkit-line-clamp: 1;
  font-size: 14px;
}
.code-grid.view-list .code-row {
  flex: 0 0 auto;
  margin: 0;
  order: 2;
  gap: 8px;
}
.code-grid.view-list .code-value {
  flex: 0 0 auto;
  margin: 0;
  font-size: 28px;
  letter-spacing: 0.14em;
}
.code-grid.view-list .btn-copy {
  padding: 6px 10px;
  font-size: 12px;
}
.code-grid.view-list .code-meta {
  flex: 1 1 140px;
  min-width: 120px;
  order: 3;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed rgba(15, 23, 42, 0.16);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.7);
}
.empty-icon { font-size: 48px; margin-bottom: 10px; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.panel h2 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--text);
}
.panel > .muted { margin-top: 0; margin-bottom: 14px; }

.dropzone {
  border: 1.5px dashed rgba(37, 99, 235, 0.4);
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.05);
  cursor: pointer;
  transition: .15s;
  margin-bottom: 10px;
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
}
.dropzone-inner {
  padding: 36px 16px;
  text-align: center;
}
.drop-icon { font-size: 32px; margin-bottom: 8px; }

.toast {
  position: fixed;
  top: 76px;
  right: 20px;
  z-index: 50;
  min-width: 220px;
  max-width: 360px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  font-size: 14px;
}
.toast.ok {
  border-color: #a7f3d0;
  background: #ecfdf5;
  color: #047857;
}
.toast.err {
  border-color: #fecdd3;
  background: #fff1f2;
  color: #be123c;
}

@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; }
  .topbar nav { order: 3; width: 100%; overflow-x: auto; }
  .page-head { flex-direction: column; }
  .page-head-actions { width: 100%; justify-content: space-between; }
  .grid-form { grid-template-columns: 1fr; }
  .code-value { font-size: 30px; letter-spacing: 0.12em; }
  .code-grid.view-list .code-value { font-size: 24px; letter-spacing: 0.1em; }
  .btn-copy-text { display: none; }
  .btn-copy { padding: 8px 10px; min-width: 36px; }
  .view-btn span:not(.view-icon) { display: none; }
  .view-btn { padding: 8px 12px; }
}