/* ============================================================
   Kenger Tools · 全站共享样式
   - 冷色渐变主色 + 深浅主题
   - 响应式
   ============================================================ */

:root {
  --bg: linear-gradient(135deg, #e8efff 0%, #f3ecff 50%, #e4f3ff 100%);
  --bg-solid: #f4f6fc;
  --fg: #1a1f3a;
  --fg-mute: #5a6280;
  --fg-soft: #8590ac;
  --card: rgba(255, 255, 255, 0.72);
  --card-border: rgba(140, 150, 200, 0.18);
  --card-hover: rgba(255, 255, 255, 0.92);
  --accent: #5b6cff;
  --accent-weak: rgba(91, 108, 255, 0.12);
  --accent-hover: #3b4ee0;
  --success: #28c76f;
  --danger: #ff4d4f;
  --warning: #f5a623;
  --shadow-sm: 0 1px 3px rgba(60, 70, 120, 0.06);
  --shadow-md: 0 4px 16px rgba(60, 70, 120, 0.08);
  --shadow-lg: 0 12px 32px rgba(60, 70, 120, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --bg: linear-gradient(135deg, #0f1220 0%, #1a1530 50%, #0e1a2c 100%);
  --bg-solid: #14172a;
  --fg: #e8eaf5;
  --fg-mute: #a0a8c5;
  --fg-soft: #6a738f;
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover: rgba(255, 255, 255, 0.07);
  --accent: #7c8dff;
  --accent-weak: rgba(124, 141, 255, 0.16);
  --accent-hover: #9aa8ff;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
}

code,
kbd,
pre,
.mono {
  font-family: var(--mono);
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* -------------------- Header -------------------- */
.site-header {
  padding: 18px 0;
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--fg) !important;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--fg-mute);
  font-size: 14px;
}
.site-nav a {
  color: var(--fg-mute);
}
.site-nav a:hover {
  color: var(--accent);
}
.icon-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--fg-mute);
  font-size: 16px;
  line-height: 1;
  transition: background 0.15s;
}
.icon-btn:hover {
  background: var(--accent-weak);
}
.theme-ico-dark {
  display: none;
}
[data-theme="dark"] .theme-ico-light {
  display: none;
}
[data-theme="dark"] .theme-ico-dark {
  display: inline;
}

/* -------------------- Main -------------------- */
.main {
  flex: 1;
  padding: 48px 20px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 44px;
}
.hero h1 {
  font-size: 38px;
  margin: 0 0 10px;
  background: linear-gradient(90deg, var(--accent), #a578ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  color: var(--fg-mute);
  margin: 0;
}

/* -------------------- Tools Grid -------------------- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.tool-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  color: var(--fg) !important;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--card-hover);
  border-color: var(--accent);
}
.tool-card-placeholder {
  opacity: 0.6;
  cursor: default;
}
.tool-card-placeholder:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--card-border);
  background: var(--card);
}
.tool-icon {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-weak);
  border-radius: var(--radius-sm);
  color: var(--accent);
}
.tool-body {
  flex: 1;
  min-width: 0;
}
.tool-body h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 600;
}
.tool-body p {
  margin: 0;
  font-size: 13px;
  color: var(--fg-mute);
}
.tool-arrow {
  flex: 0 0 auto;
  color: var(--fg-soft);
  font-size: 18px;
  transition: transform 0.2s;
}
.tool-card:hover .tool-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* -------------------- Footer -------------------- */
.site-footer {
  padding: 24px 0;
  color: var(--fg-soft);
  font-size: 13px;
  border-top: 1px solid var(--card-border);
  margin-top: auto;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.site-footer .sep {
  opacity: 0.5;
}

/* =============================================================
   通用工具页面：表单、结果条、复制按钮 等
   ============================================================= */

.tool-page {
  padding: 32px 20px 48px;
  flex: 1;
}

.tool-page h1 {
  margin: 0 0 6px;
  font-size: 26px;
}

.tool-page .page-sub {
  margin: 0 0 28px;
  color: var(--fg-mute);
  font-size: 14px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.panel + .panel {
  margin-top: 20px;
}

.input-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.input-row label {
  font-size: 13px;
  color: var(--fg-mute);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.big-input {
  width: 100%;
  font-family: var(--mono);
  font-size: 22px;
  padding: 14px 16px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--bg-solid);
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.big-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
}
.big-input::placeholder {
  color: var(--fg-soft);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
  font-size: 13px;
  color: var(--fg-mute);
}
.controls label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.controls select,
.controls input[type="number"] {
  font-family: inherit;
  font-size: 13px;
  padding: 4px 8px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  background: var(--bg-solid);
  color: var(--fg);
}
.controls .sep {
  color: var(--fg-soft);
}
/* 小圆角标签按钮 */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--fg-mute);
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 12px;
  font-family: inherit;
  line-height: 1.5;
  cursor: pointer;
  transition: all 0.15s;
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-weak);
}
.chip:active {
  transform: translateY(1px);
}

/* 结果列表 */
.results {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}
.result-item {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  transition: background 0.12s;
}
.result-item:hover {
  background: var(--accent-weak);
}
.result-item.muted {
  opacity: 0.55;
}
.result-label {
  color: var(--fg-mute);
  font-size: 12px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.result-value {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--fg);
  word-break: break-all;
  min-width: 0;
}
.result-value.chinese {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
}
.copy-btn {
  flex: 0 0 auto;
  background: transparent;
  border: 1px solid transparent;
  color: var(--fg-soft);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.copy-btn:hover {
  background: var(--accent-weak);
  color: var(--accent);
  border-color: var(--accent);
}
.copy-btn.done {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

.hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--fg-soft);
}
.hint.error {
  color: var(--danger);
}

/* Tips 面板 */
.panel.tips {
  margin-top: 24px;
  background: transparent;
  border-style: dashed;
  box-shadow: none;
}
.panel.tips h4 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-mute);
  letter-spacing: 0.3px;
}
.panel.tips ul {
  margin: 0;
  padding-left: 20px;
  font-size: 13px;
  color: var(--fg-mute);
}
.panel.tips li + li {
  margin-top: 4px;
}
.panel.tips code {
  background: var(--accent-weak);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%) translateY(16px);
  background: var(--fg);
  color: var(--bg-solid);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  box-shadow: var(--shadow-lg);
  z-index: 99;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 小屏 */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 30px;
  }
  .result-item {
    grid-template-columns: 1fr auto;
    gap: 4px 10px;
  }
  .result-label {
    grid-column: 1 / -1;
  }
  .big-input {
    font-size: 18px;
  }
}