/* ================================================
   工具库（util）页面样式
   ================================================ */

.util-page {
  background: linear-gradient(180deg, #f5f3ff 0%, #faf9ff 220px, #faf9ff 100%);
  padding-bottom: 3rem;
}

/* ===== 顶部标题 ===== */
.util-hero {
  padding: 2rem 0 1.5rem;
}

.util-hero-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.util-hero-sub {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.util-badge-count {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #5b4fe8;
  background: rgba(91, 79, 232, 0.1);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
}

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

.util-search-box svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.util-search-input {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: #fff;
  padding: 0.4375rem 1rem 0.4375rem 2.25rem;
  font-size: 0.875rem;
  outline: none;
  transition: all 0.15s;
}

.util-search-input:focus {
  border-color: #5b4fe8;
  box-shadow: 0 0 0 3px rgba(91, 79, 232, 0.12);
}

/* ===== 布局 ===== */
.util-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
}

/* ===== 左侧工具菜单 ===== */
.util-side {
  position: sticky;
  top: 72px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 0.75rem;
}

.util-side-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 0.25rem 0.5rem 0.5rem;
}

.util-menu {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  max-height: calc(100vh - 220px);
  overflow-y: auto;
}

.util-menu-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  border-radius: 0.5rem;
  padding: 0.5rem 0.625rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
}

.util-menu-item:hover {
  background: var(--bg-muted);
  color: #5b4fe8;
}

.util-menu-item.active {
  background: rgba(91, 79, 232, 0.1);
  color: #5b4fe8;
  font-weight: 600;
}

.util-menu-item .util-menu-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--bg-muted);
  color: #5b4fe8;
  flex-shrink: 0;
}

.util-menu-item.active .util-menu-icon {
  background: #5b4fe8;
  color: #fff;
}

/* ===== 右侧内容 ===== */
.util-main {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  min-height: 460px;
}

.util-panel {
  display: none;
  animation: utilFadeIn 0.18s ease;
  padding: 1.5rem;
}

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

@keyframes utilFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.util-panel-head {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.875rem;
  margin-bottom: 1.125rem;
}

.util-panel-title {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.util-panel-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0.25rem 0 0;
}

/* ===== 表单控件 ===== */
.util-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
  display: block;
}

.util-textarea {
  width: 100%;
  min-height: 150px;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-input);
  padding: 0.75rem 0.875rem;
  font-size: 0.8125rem;
  color: var(--text-primary);
  outline: none;
  resize: vertical;
  transition: all 0.15s;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.util-textarea:focus {
  border-color: #5b4fe8;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(91, 79, 232, 0.12);
}

.util-textarea.sm {
  min-height: 92px;
}

.util-input {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-input);
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-primary);
  outline: none;
  transition: all 0.15s;
}

.util-input:focus {
  border-color: #5b4fe8;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(91, 79, 232, 0.12);
}

.util-select {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-input);
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-primary);
  outline: none;
}

.util-select:focus {
  border-color: #5b4fe8;
}

/* ===== 按钮 ===== */
.util-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(91, 79, 232, 0.35);
  background: #fff;
  color: #5b4fe8;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.4375rem 0.875rem;
  cursor: pointer;
  transition: all 0.15s;
}

.util-btn:hover {
  background: rgba(91, 79, 232, 0.08);
}

.util-btn.primary {
  background: #5b4fe8;
  border-color: #5b4fe8;
  color: #fff;
}

.util-btn.primary:hover {
  background: #4438c8;
  border-color: #4438c8;
}

.util-btn.ghost {
  border-color: var(--border-color);
  color: var(--text-muted);
  background: #fff;
}

.util-btn.ghost:hover {
  color: var(--text-primary);
  background: var(--bg-muted);
}

.util-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0;
}

.util-check {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  cursor: pointer;
}

.util-check input {
  accent-color: #5b4fe8;
}

/* ===== 结果提示 ===== */
.util-result {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  display: none;
}

.util-result.show {
  display: block;
}

.util-result.ok {
  color: #16a34a;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.util-result.err {
  color: #b91c1c;
  background: #fef2f2;
  border: 1px solid #fecaca;
}

/* ===== 哈希结果列表 ===== */
.util-hash-item {
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.625rem 0.75rem;
  margin-bottom: 0.5rem;
  background: var(--bg-input);
}

.util-hash-name {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #5b4fe8;
  text-transform: uppercase;
}

.util-hash-value {
  font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
  font-size: 0.75rem;
  word-break: break-all;
  color: var(--text-primary);
}

/* ===== 颜色工具 ===== */
.util-color-preview {
  height: 88px;
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
  background: #5b4fe8;
}

.util-color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

/* ===== 通用卡片 ===== */
.util-mini-card {
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.875rem;
  background: var(--bg-card);
}

.util-stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.util-stat-item .util-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: #5b4fe8;
  line-height: 1.2;
}

.util-stat-item .util-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== 正则匹配结果 ===== */
.util-match-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.5rem;
  background: var(--bg-input);
  font-size: 0.75rem;
  font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
}

.util-match-item {
  padding: 0.25rem 0.375rem;
  border-radius: 0.25rem;
}

.util-match-item:nth-child(odd) {
  background: #fff;
}

.util-match-index {
  color: #5b4fe8;
  font-weight: 700;
  margin-right: 0.5rem;
}

.util-hl {
  background: #fde68a;
  border-radius: 2px;
  padding: 0 1px;
}

/* ===== 空状 / 提示 ===== */
.util-tip {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.util-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ===== 响应 ===== */
@media (max-width: 991.98px) {
  .util-layout {
    grid-template-columns: 1fr;
  }

  .util-side {
    position: static;
  }

  .util-menu {
    flex-direction: row;
    overflow-x: auto;
    max-height: none;
    padding-bottom: 0.25rem;
  }

  .util-menu-item {
    width: auto;
    white-space: nowrap;
    border: 1px solid var(--border-color);
  }

  .util-side-title {
    display: none;
  }
}

@media (max-width: 575.98px) {
  .util-main {
    padding: 1rem;
  }

  .util-hero-title {
    font-size: 1.5rem;
  }
}