/* ===== CSS 变量 / 主题 ===== */
:root,
[data-theme="light"] {
  --bg-primary: #f5f0e8;
  --bg-secondary: #f5f0e8;
  --bg-card: #f5f0e8;
  --text-primary: #1a1a1a;
  --text-secondary: #3a3a3a;
  --text-muted: #6a6a6a;
  --border: #1a1a1a;
  --border-hover: #000000;
  --accent: #e8c840;
  --accent-hover: #d4b630;
  --shadow: 3px 3px 0 #1a1a1a;
  --shadow-hover: 5px 5px 0 #1a1a1a;
  --radius: 0px;
  --ink: #1a1a1a;
  --paper: #f5f0e8;
}

[data-theme="dark"] {
  --bg-primary: #1a1810;
  --bg-secondary: #1a1810;
  --bg-card: #22201a;
  --text-primary: #f0ece4;
  --text-secondary: #c0b8a8;
  --text-muted: #7a7468;
  --border: #f0ece4;
  --border-hover: #ffffff;
  --accent: #e8c840;
  --accent-hover: #f0d860;
  --shadow: 3px 3px 0 #f0ece4;
  --shadow-hover: 5px 5px 0 #f0ece4;
  --ink: #f0ece4;
  --paper: #1a1810;
}

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

body {
  font-family: "Bangers", "Impact", "Arial Black", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s, color 0.3s;
  position: relative;
}

/* 纸质纹理背景 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 50px,
      rgba(0,0,0,0.02) 50px,
      rgba(0,0,0,0.02) 51px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 50px,
      rgba(0,0,0,0.015) 50px,
      rgba(0,0,0,0.015) 51px
    );
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] body::before {
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 50px,
      rgba(255,255,255,0.02) 50px,
      rgba(255,255,255,0.02) 51px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 50px,
      rgba(255,255,255,0.015) 50px,
      rgba(255,255,255,0.015) 51px
    );
}

body > * {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-secondary);
  border-bottom: 3px solid var(--ink);
  padding: 16px 32px;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 2px;
  white-space: nowrap;
  text-transform: uppercase;
  text-shadow: 2px 2px 0 var(--accent);
}

.logo span {
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--ink);
}

/* ===== 搜索框 ===== */
.search-box {
  flex: 1;
  max-width: 320px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 10px 14px 10px 36px;
  border: 3px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--text-primary);
  font-family: "Courier New", monospace;
  font-size: 14px;
  font-weight: 700;
  outline: none;
  box-shadow: 3px 3px 0 var(--ink);
  transition: box-shadow 0.15s, transform 0.15s;
}

.search-box input:focus {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--ink);
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
}

/* ===== 主题切换按钮 ===== */
.theme-btn {
  background: var(--paper);
  border: 3px solid var(--ink);
  border-radius: 0;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 18px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: box-shadow 0.15s, transform 0.15s;
}

.theme-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.theme-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

/* ===== 主内容区 ===== */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px;
  flex: 1;
  width: 100%;
}

/* ===== 分类区块 ===== */
.category-section {
  margin-bottom: 32px;
}

.category-title {
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.category-title .icon {
  font-size: 16px;
}

/* 分类标题行 */
.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--ink);
  position: relative;
}

/* 手绘装饰 - 交叉排线 */
.category-header::after {
  content: '';
  position: absolute;
  bottom: -3px;
  right: 0;
  width: 60px;
  height: 3px;
  background: var(--accent);
}

.expand-btn {
  background: none;
  border: none;
  padding: 2px 6px;
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 900;
  transition: color 0.2s;
}

.expand-btn:hover {
  color: var(--accent);
}

/* 折叠状态：隐藏添加按钮 */
.card-grid.collapsed .card-add {
  display: none;
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.card {
  background: var(--bg-card);
  border: 2px solid var(--ink);
  border-radius: 0;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  position: relative;
}

/* 手绘不规则边缘效果 */
.card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border: 2px solid var(--ink);
  opacity: 0.3;
  transform: rotate(0.3deg);
  pointer-events: none;
}

.card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hover);
}

.card:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--ink);
}

/* 拖拽状态 */
.card.dragging {
  opacity: 0;
  pointer-events: none;
  position: absolute;
  z-index: -1;
}

.card-placeholder {
  background: var(--accent);
  opacity: 0.2;
  border: 3px dashed var(--ink);
  border-radius: 0;
  pointer-events: none;
  min-height: 60px;
  transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
}

.card.flip-animate {
  transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
}

.card[draggable="true"] {
  cursor: grab;
}

.card[draggable="true"]:active {
  cursor: grabbing;
}

.card .card-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.card .card-info {
  flex: 1;
  min-width: 0;
}

.card .card-name {
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 1px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-family: "Bangers", "Impact", "Arial Black", sans-serif;
}

.card .card-desc {
  font-size: 11px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: "Courier New", monospace;
  font-weight: 700;
}

.card .internal-badge {
  display: inline-block;
  font-size: 10px;
  background: var(--accent);
  color: var(--ink);
  border: 2px solid var(--ink);
  padding: 1px 6px;
  border-radius: 0;
  margin-left: 6px;
  vertical-align: middle;
  font-weight: 900;
  text-transform: uppercase;
}

/* ===== 响应式 ===== */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 18px;
  display: none;
  font-family: "Bangers", "Impact", sans-serif;
  letter-spacing: 1px;
}

/* ===== 添加卡片 ===== */
.card-add {
  border: 3px dashed var(--ink);
  box-shadow: none;
  opacity: 0.5;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.15s;
}

.card-add::before {
  display: none;
}

.card-add:hover {
  opacity: 1;
  box-shadow: var(--shadow);
  transform: translate(-3px, -3px);
}

/* ===== 自定义卡片删除按钮 ===== */
.card-custom {
  position: relative;
}

.card-delete {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  background: var(--paper);
  border: 2px solid var(--ink);
  opacity: 0;
  transition: opacity 0.2s;
}

.card-custom:hover .card-delete {
  opacity: 1;
}

.card-delete:hover {
  color: #ff3333;
  background: #ffeeee;
}

/* ===== 弹窗 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--paper);
  border: 4px solid var(--ink);
  border-radius: 0;
  padding: 28px;
  width: 90%;
  max-width: 400px;
  box-shadow: 8px 8px 0 var(--ink);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ink);
}

.modal-header h3 {
  font-size: 20px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-primary);
  cursor: pointer;
  font-weight: 900;
}

.modal-close:hover {
  color: #ff3333;
}

.modal-field {
  margin-bottom: 16px;
}

.modal-field label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: "Courier New", monospace;
}

.modal-field input {
  width: 100%;
  padding: 10px 12px;
  border: 3px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--text-primary);
  font-family: "Courier New", monospace;
  font-size: 14px;
  font-weight: 700;
  outline: none;
  transition: box-shadow 0.15s;
}

.modal-field input:focus {
  box-shadow: 3px 3px 0 var(--ink);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 28px;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 3px solid var(--ink);
  font-family: "Courier New", monospace;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===== 工具页公共样式 ===== */
.tool-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 32px;
}

.tool-header {
  margin-bottom: 28px;
}

.tool-header h1 {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tool-header p {
  color: var(--text-secondary);
  font-size: 14px;
  font-family: "Courier New", monospace;
}

.tool-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tool-btn {
  padding: 8px 16px;
  border: 3px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--text-primary);
  font-family: "Bangers", "Impact", "Arial Black", sans-serif;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.15s, box-shadow 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tool-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.tool-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

.tool-btn.primary {
  background: var(--accent);
  color: var(--ink);
  border-color: var(--ink);
}

.tool-btn.primary:hover {
  background: var(--accent-hover);
}

.tool-textarea {
  width: 100%;
  min-height: 300px;
  padding: 16px;
  border: 3px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--text-primary);
  font-family: "SF Mono", "Fira Code", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
  font-weight: 700;
  resize: vertical;
  outline: none;
  box-shadow: 4px 4px 0 var(--ink);
  transition: box-shadow 0.15s;
}

.tool-textarea:focus {
  box-shadow: 6px 6px 0 var(--ink);
}

.tool-message {
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 0;
  font-size: 13px;
  font-family: "Courier New", monospace;
  font-weight: 700;
  display: none;
}

.tool-message.error {
  display: block;
  background: #fff0f0;
  color: #cc0000;
  border: 3px solid #cc0000;
}

.tool-message.success {
  display: block;
  background: #f0fff0;
  color: #008800;
  border: 3px solid #008800;
}

[data-theme="dark"] .tool-message.error {
  background: #2a1010;
  color: #ff6666;
  border-color: #ff6666;
}

[data-theme="dark"] .tool-message.success {
  background: #102a10;
  color: #66ff66;
  border-color: #66ff66;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .header {
    padding: 12px 16px;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .logo {
    font-size: 24px;
  }

  .search-box {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
  }

  .main {
    padding: 20px 12px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
}

/* ===== 编辑模式 ===== */
.card-edit-actions {
  display: none;
  position: absolute;
  top: 6px;
  right: 6px;
  gap: 4px;
}

.card[draggable="true"] {
  position: relative;
}

.edit-mode .card-edit-actions {
  display: flex;
}

.card-action-btn {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-primary);
  background: var(--paper);
  border: 2px solid var(--ink);
  cursor: pointer;
  transition: all 0.15s;
}

.card-action-btn:hover {
  background: var(--accent);
}

.card-action-delete:hover {
  background: #ff3333;
  color: #fff;
}

/* 分类编辑按钮 */
.cat-edit-btn {
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  margin-left: 6px;
}

.edit-mode .cat-edit-btn {
  opacity: 1;
}

.cat-edit-btn:hover {
  color: var(--accent);
}

/* 编辑模式下卡片 */
.edit-mode .card[draggable="true"] {
  animation: wiggle 0.15s ease-in-out infinite alternate;
}

@keyframes wiggle {
  0% { transform: rotate(-0.8deg); }
  100% { transform: rotate(0.8deg); }
}

.edit-mode .card[draggable="true"]:hover {
  animation: none;
  transform: translate(-3px, -3px);
}

/* 编辑模式提示条 */
.edit-mode::after {
  content: '⚡ EDIT MODE ⚡';
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--ink);
  padding: 8px 20px;
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 2px;
  z-index: 999;
  pointer-events: none;
  animation: fadeIn 0.3s;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* 折叠状态下隐藏添加按钮，但编辑模式下按钮始终可见 */
.card-grid.collapsed .card-edit-actions {
  display: none;
}

.edit-mode .card-grid.collapsed .card-edit-actions {
  display: flex;
}

/* ===== 分类拖拽 ===== */
.cat-drag-handle {
  display: none;
  cursor: grab;
  color: var(--text-muted);
  font-size: 16px;
  margin-right: 4px;
  user-select: none;
}

.edit-mode .cat-drag-handle {
  display: inline;
}

.edit-mode .category-header {
  cursor: grab;
  border-radius: 0;
  padding: 4px 8px;
  transition: background 0.2s;
}

.edit-mode .category-header:hover {
  background: rgba(232, 200, 64, 0.1);
}

.section-dragging {
  opacity: 0.3;
  pointer-events: none;
}

.section-placeholder {
  border: 3px dashed var(--ink);
  border-radius: 0;
  opacity: 0.3;
  background: var(--accent);
  margin-bottom: 48px;
  transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
}