/* ============ 个人工具箱 ============ */
* { box-sizing: border-box; }

:root {
  color-scheme: light dark; /* 原生控件（日期选择器、日历图标）跟随深色模式 */
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #24292f;
  --muted: #6e7781;
  --border: #e3e6ea;
  --primary: #2f6bff;
  --primary-weak: rgba(47, 107, 255, .12);
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow-lg: 0 12px 32px -12px rgba(16, 24, 40, .18);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101318;
    --card: #181c24;
    --text: #e7eaee;
    --muted: #98a1ad;
    --border: #262c37;
    --primary: #5b8cff;
    --primary-weak: rgba(91, 140, 255, .18);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-lg: 0 12px 32px -12px rgba(0, 0, 0, .6);
  }
  .flash { --ok-bg: #12261a; --ok-text: #57d98a; }
  .alert-error { --err-bg: #2d1517; --err-text: #ff8187; }
}

html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 20px;
  height: 56px; display: flex; align-items: center; justify-content: space-between;
}
.brand {
  font-weight: 700; font-size: 17px; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.brand-icon { font-size: 20px; }
.topbar-actions {
  display: flex; align-items: center; gap: 16px;
  font-size: 14px; color: var(--muted);
}
.topbar-actions a { color: var(--muted); }
.topbar-actions a:hover { color: var(--primary); }
.whoami { font-weight: 600; color: var(--text); }
.link-btn {
  background: none; border: none; padding: 0; cursor: pointer;
  font: inherit; color: var(--muted);
}
.link-btn:hover { color: var(--primary); text-decoration: underline; }

/* ---------- 主体 ---------- */
.container { max-width: 1080px; margin: 0 auto; padding: 28px 20px 40px; }
.page-title { font-size: 24px; margin: 4px 0 20px; }
.muted { color: var(--muted); font-size: 13px; }
.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 8px 0 40px; }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
}
.empty-state { text-align: center; padding: 48px 24px; }
.empty-state p { margin: 6px 0; }
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 1px 6px; word-break: break-all;
}

/* ---------- 首页工具卡片 ---------- */
.tool-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}
.tool-card {
  display: block; padding: 20px; color: var(--text);
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.tool-icon { font-size: 34px; line-height: 1.2; margin-bottom: 12px; }
.tool-name { font-weight: 600; font-size: 16px; margin-bottom: 4px; }
.tool-desc { color: var(--muted); font-size: 13px; min-height: 20px; }

/* ---------- 登录页 ---------- */
.auth-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.auth-card {
  width: 100%; max-width: 380px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 32px 28px; box-shadow: var(--shadow-lg);
}
.auth-title { text-align: center; font-size: 20px; margin: 0 0 4px; }
.auth-sub { text-align: center; color: var(--muted); font-size: 13px; margin: 0 0 22px; }

/* ---------- 表单 ---------- */
label.field { display: block; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="time"], input[type="datetime-local"],
textarea, select {
  width: 100%; margin-top: 6px; padding: 10px 12px;
  font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-weak);
}
.check {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; color: var(--muted); margin: 2px 0 16px;
  cursor: pointer;
}
.check input { width: auto; margin: 0; }

.btn {
  display: inline-block; width: 100%; padding: 10px 14px;
  border: none; border-radius: 8px; cursor: pointer;
  background: var(--primary); color: #fff;
  font: inherit; font-weight: 600;
}
.btn:hover { filter: brightness(1.08); }
.btn-outline {
  background: var(--card); color: var(--text); border: 1px solid var(--border);
}
.btn-outline:hover { filter: none; border-color: var(--muted); }
.row { display: flex; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.row .btn { width: auto; flex: 1; }
.row > label { flex: 1; min-width: 150px; }

@media (max-width: 560px) {
  .row { flex-direction: column; gap: 0; }
  .row .btn { width: 100%; }
  .container { padding: 20px 14px 40px; }
  .topbar-inner { padding: 0 14px; }
  .tool-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
}

/* 工具页内部导航的当前项 */
.nav-on { color: var(--primary) !important; font-weight: 600; }

/* ---------- 提示 ---------- */
.flash, .alert-error {
  padding: 10px 14px; border-radius: 8px;
  margin-bottom: 18px; font-size: 14px;
}
.flash { --ok-bg: #e6ffec; --ok-text: #116329; background: var(--ok-bg); color: var(--ok-text); }
.alert-error { --err-bg: #ffebe9; --err-text: #c0392b; background: var(--err-bg); color: var(--err-text); }

/* ---------- 工具页通用 ---------- */
.result-box {
  background: var(--bg); border: 1px dashed var(--border);
  border-radius: 8px; padding: 10px 14px; margin: 10px 0 14px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 14px; word-break: break-all;
}
hr { border: none; border-top: 1px solid var(--border); margin: 18px 0; }