/* ============================================================
 *  Base · 深色 + 浅色 · 混合字体
 *  强调色由 JS 通过 --accent-user 控制，浅色/深色都能换色
 * ============================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
html { -webkit-text-size-adjust: 100%; }

/* ===== 强调色中间变量（JS 只改这一组）===== */
:root,
body.light,
body.dark {
  --accent: var(--accent-user, #7ee787);
  --accent-soft: var(--accent-user-soft, rgba(126, 231, 135, 0.12));
  --accent-glow: var(--accent-user-glow, rgba(126, 231, 135, 0.4));
  --accent-dim: var(--accent-user-dim, #56d364);
}

/* ===== 深色（默认） ===== */
:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --bg-subtle: #1c2128;
  --bg-hover: #21262d;

  --border: #30363d;
  --border-strong: #484f58;

  --text: #d6dde6;
  --text-secondary: #9ba7b4;
  --text-muted: #7d8794;
  --text-bright: #f0f6fc;

  --blue: #79c0ff;
  --blue-soft: rgba(121, 192, 255, 0.12);

  --orange: #ffa657;
  --red: #ff7b72;
  --red-soft: rgba(255, 123, 114, 0.12);
  --purple: #d2a8ff;

  /* 字体栈 */
  --font-ui: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI',
             'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
             'Noto Sans SC', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Fira Code',
               Consolas, 'Courier New', ui-monospace, monospace;

  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;

  --shadow: 0 0 0 1px rgba(240, 246, 252, 0.04), 0 8px 24px rgba(1, 4, 9, 0.6);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ===== 浅色（Solarized Light） ===== */
body.light {
  --bg: #fdf6e3;
  --bg-elevated: #fffbf0;
  --bg-subtle: #f5ecd7;
  --bg-hover: #eee8d5;

  --border: #d9d2bd;
  --border-strong: #b8b09a;

  --text: #2d2a23;
  --text-secondary: #55503f;
  --text-muted: #7a7566;
  --text-bright: #1a1814;

  --blue: #1f6fa8;
  --blue-soft: rgba(31, 111, 168, 0.12);

  --orange: #b8431b;
  --red: #c53030;
  --red-soft: rgba(197, 48, 48, 0.1);
  --purple: #5b5fb0;

  --shadow: 0 0 0 1px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(101, 96, 78, 0.1);

  /* 注意：不在这里定义 --accent 系列，让 JS 的 --accent-user 统一控制 */
}

/* ===== Body ===== */
body {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 400;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  padding-top: max(1.5rem, env(safe-area-inset-top));
  padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
  padding-left: max(1.5rem, env(safe-area-inset-left));
  padding-right: max(1.5rem, env(safe-area-inset-right));
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 背景网格 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.15;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0%, transparent 80%);
  transition: opacity 0.25s;
}
body.light::before {
  opacity: 0.06;
}

/* ===== 壁纸 ===== */
.wallpaper {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.wallpaper::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, var(--wallpaper-dim, 0));
  backdrop-filter: blur(var(--wallpaper-blur, 0px));
  -webkit-backdrop-filter: blur(var(--wallpaper-blur, 0px));
  transition: background-color 0.3s, backdrop-filter 0.3s;
}
body.light .wallpaper::after {
  background-color: rgba(255, 255, 255, var(--wallpaper-dim, 0));
}

/* ===== 基础元件 ===== */
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  touch-action: manipulation;
}
button:disabled { opacity: 0.5; cursor: not-allowed; }

input, textarea, select {
  font-family: inherit;
  color: inherit;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
input[type="range"] {
  -webkit-appearance: auto;
  appearance: auto;
  accent-color: var(--accent);
}

::selection {
  background-color: var(--accent-soft);
  color: var(--text-bright);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background-color: var(--border);
  border: 2px solid var(--bg);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover { background-color: var(--border-strong); }

/* ===== Toast ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%) translateY(12px);
  background-color: var(--bg-elevated);
  color: var(--text-bright);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 999;
  box-shadow: var(--shadow);
  max-width: 90vw;
  text-align: center;
}
.toast::before {
  content: '$ ';
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
 *  自定义背景时的对比度增强
 * ============================================================ */

/* 有壁纸时启用毛玻璃 */
body.wallpaper-active {
  --glass-blur: 14px;
  --glass-alpha: 0.75;
}

body.wallpaper-active:not(.light) {
  --glass-bg: rgba(13, 17, 23, 0.72);
  --glass-bg-elevated: rgba(22, 27, 34, 0.75);
  --glass-bg-subtle: rgba(28, 33, 40, 0.7);
  --glass-bg-hover: rgba(33, 38, 45, 0.85);
}

body.wallpaper-active.light {
  --glass-bg: rgba(253, 246, 227, 0.8);
  --glass-bg-elevated: rgba(255, 251, 240, 0.82);
  --glass-bg-subtle: rgba(245, 236, 215, 0.78);
  --glass-bg-hover: rgba(238, 232, 213, 0.88);
}

/* 应用到所有主要卡片 */
body.wallpaper-active .widget,
body.wallpaper-active .link-item,
body.wallpaper-active .search-input,
body.wallpaper-active .weather-inline,
body.wallpaper-active .icon-btn,
body.wallpaper-active .add-bookmark-btn,
body.wallpaper-active .engine-btn {
  background-color: var(--glass-bg, var(--bg-elevated));
  backdrop-filter: blur(var(--glass-blur, 14px)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur, 14px)) saturate(140%);
}

body.wallpaper-active .search-input:focus {
  background-color: var(--glass-bg-elevated);
}

/* 设置面板 / 模态框 / 命令面板 */
body.wallpaper-active .settings-panel,
body.wallpaper-active .modal-panel,
body.wallpaper-active .command-panel {
  background-color: var(--glass-bg-elevated);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-color: rgba(255, 255, 255, 0.1);
}
body.wallpaper-active.light .settings-panel,
body.wallpaper-active.light .modal-panel,
body.wallpaper-active.light .command-panel {
  border-color: rgba(0, 0, 0, 0.08);
}

/* 头部/导航/footer 也是玻璃 */
body.wallpaper-active .settings-header,
body.wallpaper-active .settings-footer,
body.wallpaper-active .settings-nav {
  background-color: var(--glass-bg-subtle);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* ===== 文字阴影：只给时钟（需要发光衬托），其他不加 ===== */
body.wallpaper-active .clock {
  text-shadow: 0 0 24px var(--accent-glow), 0 2px 8px rgba(0, 0, 0, 0.4);
}
body.wallpaper-active.light .clock {
  text-shadow: 0 0 24px var(--accent-glow), 0 1px 4px rgba(255, 255, 255, 0.5);
}

/* 问候语：半透明胶囊背景，避免模糊 */
body.wallpaper-active .greeting {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius);
  background-color: var(--glass-bg, var(--bg-elevated));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-top: 0.75rem;
}

/* 其他小字：深色下极淡描边，浅色下无阴影 */
body.wallpaper-active .widget-title,
body.wallpaper-active .link-name,
body.wallpaper-active .engine-setting-name,
body.wallpaper-active .setting-label {
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
}
body.wallpaper-active.light .widget-title,
body.wallpaper-active.light .link-name,
body.wallpaper-active.light .engine-setting-name,
body.wallpaper-active.light .setting-label {
  text-shadow: none;
}

/* 防止 backdrop-filter 导致文字模糊 */
body.wallpaper-active .greeting,
body.wallpaper-active .widget-title,
body.wallpaper-active .link-name,
body.wallpaper-active .link-icon,
body.wallpaper-active .clock,
body.wallpaper-active .weather-inline {
  transform: translateZ(0);
  -webkit-font-smoothing: antialiased;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* 手机端减弱毛玻璃 */
@media (max-width: 560px) {
  body.wallpaper-active .widget,
  body.wallpaper-active .link-item,
  body.wallpaper-active .search-input,
  body.wallpaper-active .weather-inline,
  body.wallpaper-active .icon-btn,
  body.wallpaper-active .add-bookmark-btn,
  body.wallpaper-active .engine-btn {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }

  body.wallpaper-active .greeting {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background-color: var(--bg-elevated);
    padding: 0.3rem 0.75rem;
  }
}