/* devcfg Tools - 通用样式 */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --primary-light: #EFF6FF;
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --bg-light: #F9FAFB;
  --success: #10B981;
  --error: #EF4444;
  --warning: #F59E0B;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
  --page-max: 1200px;
  --page-pad-x: 24px;
}

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

html, body {
  min-height: 100vh;
}

body {
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  background: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
}

body.tool-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

body.tool-page .site-main {
  flex: 1;
  width: 100%;
  min-width: 0;
}

body.tool-page .site-footer {
  margin-top: 48px;
}

.container {
  max-width: var(--page-max);
  width: 100%;
  margin: 0 auto;
  padding: 48px var(--page-pad-x) 48px;
  flex: 1;
  min-width: 0;
}

.tool-header {
  margin-bottom: 32px;
}

.tool-header h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-header p {
  font-size: 16px;
  color: var(--text-secondary);
}

.tool-container {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr auto;
  gap: 12px;
  align-items: end;
}

/* 颜色工具双栏：勿用 align-items:end，否则较短一栏会被贴底，与另一栏错位 */
.form-row.color-two-col {
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.form-row.color-two-col .color-col-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 10px;
  line-height: 1.35;
  min-height: 2.75em;
}

.form-row.color-two-col input[type="color"] {
  width: 100%;
  height: 44px;
  padding: 2px 4px;
  box-sizing: border-box;
  border-radius: 8px;
  border: 1px solid var(--border);
  vertical-align: middle;
}

.input-group {
  position: relative;
}

input[type="number"],
input[type="text"],
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.btn {
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  white-space: nowrap;
}

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

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

.btn-secondary {
  background: var(--bg-light);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: #F3F4F6; }

/* 工具页操作按钮：桌面默认每行 3 个 */
.btn-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.btn-group .btn {
  width: 100%;
  box-sizing: border-box;
  white-space: normal;
  min-height: 44px;
}

@media (max-width: 520px) {
  .btn-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 360px) {
  .btn-group {
    grid-template-columns: 1fr;
  }
}

.result-box {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
  min-height: 80px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  overflow-x: auto;
  word-break: break-all;
}

.result-grid {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.result-label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 14px;
}

.result-value {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 15px;
  color: var(--primary);
  font-weight: 500;
  cursor: pointer;
  user-select: all;
}

.result-value:hover {
  opacity: 0.8;
  cursor: pointer;
}

.copy-hint {
  font-size: 11px;
  color: var(--text-secondary);
  margin-left: 8px;
  opacity: 0;
  transition: opacity 0.2s;
}

.result-value:hover + .copy-hint,
.result-item:hover .copy-hint { opacity: 1; }

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}

.tab-btn {
  padding: 12px 20px;
  background: transparent;
  border: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.textarea-wrapper {
  position: relative;
}

textarea {
  width: 100%;
  min-height: 200px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.5;
}

.error-msg {
  color: var(--error);
  font-size: 13px;
  margin-top: 8px;
  display: none;
}

.error-msg.show { display: block; }

.success-msg {
  color: var(--success);
  font-size: 13px;
  margin-top: 8px;
  display: none;
}

.success-msg.show { display: block; }

.current-time {
  text-align: center;
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.current-time .time-display {
  font-size: 36px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  margin: 12px 0 8px;
}

.current-time .timestamp-display {
  font-size: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  opacity: 0.9;
}

.unit-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  background: var(--bg-light);
  padding: 4px;
  border-radius: 8px;
  width: fit-content;
}

.unit-toggle button {
  padding: 8px 20px;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.unit-toggle button.active {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow);
}

footer {
  background: white;
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  margin-top: 64px;
}

footer p {
  color: var(--text-secondary);
  font-size: 14px;
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .tool-header h1 {
    font-size: 24px;
  }
  
  .nav-links { display: none; }
  
  .container { padding: 24px 16px 60px; }
  
  .tool-container { padding: 20px; }
}

/* 工具页双栏布局（侧栏导航），主栏与页头 .container 同宽 */
.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(208px, 260px);
  gap: 24px;
  align-items: start;
  width: 100%;
}

.tool-main {
  min-width: 0;
}

.sidebar {
  position: sticky;
  top: 80px;
  min-width: 0;
}

.sidebar-card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.sidebar-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.tool-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tool-nav-item {
  margin-bottom: 0;
  display: block;
}

.tool-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  transition: all 0.2s;
  min-height: 44px;
}

.tool-nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.tool-nav-link.active {
  background: #eff6ff;
  color: var(--primary);
  font-weight: 500;
}

.tool-nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

li.tool-nav-sep {
  list-style: none;
  margin: 10px 0 4px;
  padding: 4px 12px 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .tool-layout {
    grid-template-columns: 1fr;
  }

  .tool-main {
    order: 1;
  }

  .sidebar {
    position: static;
    top: auto;
    order: 2;
  }

  .tool-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .tool-nav-sep {
    width: 100%;
    flex-basis: 100%;
    margin-top: 4px;
  }

  .tool-nav-item {
    margin-bottom: 0;
  }

  .sidebar-card {
    padding: 16px;
  }
}

/* 文本 diff / 正则高亮等 */
.diff-row {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.5;
  padding: 2px 8px;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-add {
  background: rgba(16, 185, 129, 0.15);
}

.diff-del {
  background: rgba(239, 68, 68, 0.12);
}

.regex-match {
  background: rgba(59, 130, 246, 0.22);
  outline: 1px solid rgba(59, 130, 246, 0.35);
}