/* Day7 开发者工具箱 — 共享样式
   与 tools.day7.top 保持同一视觉语言 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #4F46E5;
  --primary-light: #818CF8;
  --primary-dark: #3730A3;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --bg: #F9FAFB;
  --surface: #FFFFFF;
  --ink: #111827;
  --muted: #6B7280;
  --border: #E5E7EB;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-hover: 0 10px 30px rgba(79,70,229,.15), 0 4px 12px rgba(0,0,0,.08);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap { width: 100%; max-width: 960px; margin: 0 auto; padding: 0 20px; }
a { color: var(--primary); }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-in { display: flex; align-items: center; justify-content: space-between; height: 58px; gap: 12px; }
.brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--ink);
  font-size: 16px; font-weight: 600; white-space: nowrap;
}
.brand b { color: var(--primary); }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700;
}
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  text-decoration: none; color: var(--muted); font-size: 14px;
  padding: 6px 10px; border-radius: 8px; white-space: nowrap;
}
.nav a:hover { background: #EEF2FF; color: var(--primary); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; padding: 48px 0 42px; text-align: center;
}
.hero h1 { font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.hero p { font-size: 15px; opacity: .92; max-width: 560px; margin: 0 auto; }
.hero-badges { margin-top: 16px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.hero-badge { background: rgba(255,255,255,.16); padding: 5px 13px; border-radius: 20px; font-size: 13px; }

/* ---------- 工具卡片 ---------- */
.section { padding: 36px 0 8px; }
.section-title {
  font-size: 19px; font-weight: 700; margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 20px; text-decoration: none; color: inherit;
  transition: all .25s ease; display: flex; flex-direction: column; align-items: center; text-align: center;
}
.card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.card-icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center;
  justify-content: center; font-size: 25px; margin-bottom: 14px;
}
.i-purple { background: #EEF2FF; } .i-green { background: #ECFDF5; }
.i-blue   { background: #EFF6FF; } .i-orange { background: #FFF7ED; }
.i-pink   { background: #FDF2F8; } .i-cyan { background: #ECFEFF; }
.i-amber  { background: #FFFBEB; }
.card-name { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.card-desc { font-size: 13px; color: var(--muted); line-height: 1.55; flex: 1; }

/* ---------- 工具页 ---------- */
.page-head { padding: 30px 0 4px; }
.page-head h1 { font-size: 25px; font-weight: 800; }
.page-head p { color: var(--muted); font-size: 14px; margin-top: 6px; }

.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-top: 20px; box-shadow: var(--shadow);
}
.panel + .panel { margin-top: 16px; }
.panel h2 { font-size: 15px; font-weight: 700; margin-bottom: 12px; }
.panel h2 .hint { font-size: 12px; font-weight: 400; color: var(--muted); margin-left: 6px; }

label.lb { display: block; font-size: 13px; font-weight: 600; color: #374151; margin-bottom: 6px; }

input[type=text], input[type=number], input[type=datetime-local], textarea, select {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--ink);
  background: #fff; border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px; transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
textarea { resize: vertical; min-height: 150px; line-height: 1.55; }
textarea.mono, input.mono { font-family: var(--mono); font-size: 13px; }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 12px; }
.row > .grow { flex: 1; min-width: 160px; }
.field { margin-bottom: 14px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.btn {
  font-family: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  padding: 9px 16px; border-radius: 10px; border: 1px solid var(--border);
  background: #fff; color: var(--ink); transition: all .18s ease; white-space: nowrap;
}
.btn:hover { border-color: var(--primary-light); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px; padding: 5px 12px; border-radius: 20px; cursor: pointer;
  background: #EEF2FF; color: var(--primary-dark); border: 1px solid transparent;
}
.chip:hover { border-color: var(--primary-light); }

.out {
  margin-top: 12px; background: #F9FAFB; border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; font-family: var(--mono); font-size: 13px; white-space: pre-wrap;
  word-break: break-all; max-height: 420px; overflow: auto; min-height: 44px;
}
.out:empty::before { content: '结果会显示在这里'; color: #9CA3AF; font-family: inherit; }
.status { font-size: 13px; margin-top: 10px; min-height: 20px; }
.status.ok { color: var(--success); }
.status.err { color: var(--danger); }
.status.warn { color: var(--warning); }

.kv { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kv-item { background: #F9FAFB; border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.kv-k { font-size: 12px; color: var(--muted); }
.kv-v { font-family: var(--mono); font-size: 14px; font-weight: 600; word-break: break-all; }

table.tb { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
table.tb th, table.tb td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
table.tb th { background: #F3F4F6; font-weight: 600; }
table.tb td.mono { font-family: var(--mono); }

.hl-wrap {
  margin-top: 12px; background: #F9FAFB; border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 14px; white-space: pre-wrap; word-break: break-word; font-size: 13px; line-height: 1.7;
  max-height: 320px; overflow: auto;
}
mark { background: #FDE68A; border-radius: 3px; padding: 0 1px; }

/* ---------- 正文 / FAQ ---------- */
.prose { margin-top: 34px; }
.prose h2 { font-size: 17px; font-weight: 700; margin: 24px 0 10px; }
.prose h3 { font-size: 15px; font-weight: 700; margin: 18px 0 6px; }
.prose p { font-size: 14px; color: #374151; margin-bottom: 10px; }
.prose ul { margin: 0 0 12px 20px; font-size: 14px; color: #374151; }
.prose li { margin-bottom: 5px; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 22px; margin-bottom: 14px;
}
.faq-item h3 { font-size: 15px; margin-bottom: 6px; }
.faq-item p { font-size: 14px; color: var(--muted); }

/* ---------- 页脚 ---------- */
footer {
  margin-top: auto; padding: 30px 20px 34px; text-align: center;
  color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); background: var(--surface);
}
footer a { color: var(--muted); }
footer .links { margin-bottom: 8px; }
footer .links a { margin: 0 6px; }

/* ---------- toast ---------- */
#toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(12px);
  background: #111827; color: #fff; font-size: 13px; padding: 9px 18px; border-radius: 20px;
  opacity: 0; pointer-events: none; transition: all .22s ease; z-index: 99;
}
#toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 760px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .card { padding: 18px 14px; }
  .card-icon { width: 44px; height: 44px; font-size: 21px; margin-bottom: 10px; }
  .hero { padding: 36px 0 32px; }
  .hero h1 { font-size: 23px; }
  .two-col, .kv { grid-template-columns: 1fr; }
  .page-head h1 { font-size: 21px; }
  .nav a { padding: 6px 8px; font-size: 13px; }
  .brand { font-size: 15px; }
}
@media (max-width: 420px) {
  .grid { grid-template-columns: 1fr; }
}