/* 零栈工坊 · 在线小工具 共享样式（深色主题，品牌紫 #667eea） */
:root {
  --primary-color: #667eea;
  --primary-hover: #5a6fd6;
  --primary-rgb: 102, 126, 234;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg: #0f1117;
  --bg-soft: #14161f;
  --card: #1a1d27;
  --card-2: #20242f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e6e8ee;
  --text-2: #9aa0ad;
  --text-3: #6b7280;
  --danger: #f87171;
  --success: #34d399;
  --radius: 14px;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

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

.tz-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: rgba(15, 17, 23, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.tz-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--text); }
.tz-brand .dot {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--primary-gradient);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px;
}
.tz-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.tz-nav a {
  padding: 6px 12px; border-radius: 999px; font-size: 13px; color: var(--text-2);
  border: 1px solid transparent;
}
.tz-nav a:hover, .tz-nav a.active { color: var(--text); border-color: var(--border-strong); background: var(--card); }

.tz-wrap { max-width: 980px; margin: 0 auto; padding: 28px 20px 64px; }

.tz-hero { text-align: center; padding: 18px 0 26px; }
.tz-hero h1 { margin: 0 0 8px; font-size: 30px; letter-spacing: .5px; }
.tz-hero p { margin: 0; color: var(--text-2); font-size: 15px; }
.tz-hero .tag {
  display: inline-block; margin-top: 12px; padding: 4px 12px; border-radius: 999px;
  font-size: 12px; color: var(--primary-color);
  background: rgba(var(--primary-rgb), 0.1); border: 1px solid rgba(var(--primary-rgb), 0.25);
}

.tz-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-top: 14px; }
.tz-card {
  display: block; padding: 18px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--border);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.tz-card:hover { transform: translateY(-4px); border-color: var(--primary-color); box-shadow: var(--shadow); }
.tz-card .ic { font-size: 22px; color: var(--primary-color); }
.tz-card h3 { margin: 10px 0 6px; font-size: 16px; color: var(--text); }
.tz-card p { margin: 0; font-size: 13px; color: var(--text-2); }

.tz-section-title { font-size: 18px; margin: 32px 0 4px; }
.tz-section-sub { color: var(--text-2); font-size: 13px; margin: 0 0 14px; }

/* 单个工具页布局 */
.tz-tool-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.tz-tool-head .ic { font-size: 26px; color: var(--primary-color); }
.tz-tool-head h1 { margin: 0; font-size: 24px; }
.tz-tool-desc { color: var(--text-2); font-size: 14px; margin: 0 0 18px; }

.tz-panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 16px;
}
.tz-panel label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 8px; font-weight: 600; }

textarea, input[type="text"], input[type="number"], select {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--border-strong); font-size: 14px; font-family: inherit;
  outline: none; transition: border-color .15s ease;
}
textarea { min-height: 200px; resize: vertical; line-height: 1.55; font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }
textarea:focus, input:focus, select:focus { border-color: var(--primary-color); }
select { width: auto; min-width: 160px; }

.tz-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 10px; font-size: 14px; cursor: pointer;
  border: 1px solid var(--border-strong); background: var(--card-2); color: var(--text);
  transition: all .15s ease;
}
.btn:hover { border-color: var(--primary-color); }
.btn-primary { background: var(--primary-gradient); border: none; color: #fff; font-weight: 600; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; }

.tz-output {
  position: relative; background: var(--bg-soft); border: 1px solid var(--border-strong);
  border-radius: 10px; padding: 12px 14px; min-height: 60px; white-space: pre-wrap;
  word-break: break-all; font-size: 14px; font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}
.tz-output.error { border-color: var(--danger); color: var(--danger); }
.tz-output.ok { border-color: rgba(52, 211, 153, 0.4); }

.tz-copy {
  position: absolute; top: 8px; right: 8px; padding: 4px 10px; font-size: 12px;
  border-radius: 8px; border: 1px solid var(--border-strong); background: var(--card);
  color: var(--text-2); cursor: pointer;
}
.tz-copy:hover { color: var(--text); border-color: var(--primary-color); }

.tz-note {
  margin-top: 14px; padding: 12px 14px; border-radius: 10px; font-size: 13px; color: var(--text-2);
  background: rgba(var(--primary-rgb), 0.05); border-left: 3px solid var(--primary-color);
}
.tz-note b { color: var(--text); }

.tz-foot { text-align: center; color: var(--text-3); font-size: 12px; margin-top: 40px; }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 680px) { .row-2 { grid-template-columns: 1fr; } .tz-nav { flex-wrap: nowrap; flex: 1 1 auto; min-width: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; } }

/* 移动端修复 2026-08-31：工具页 <pre> 长行换行/横向滚动（修复 .tz-pre 孤儿类未定义导致的溢出） */
.tz-pre {
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.55;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}
.tz-pre.scroll { white-space: pre; }

.tz-privacy{display:flex;align-items:center;gap:6px;margin:14px 0 0;padding:8px 12px;border-radius:10px;background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.35);color:#7ee2a8;font-size:13px}
.tz-privacy b{color:#a7f3c9}

.tz-search{margin:10px 0 0;width:100%}
.tz-search input{width:100%;max-width:340px;padding:7px 12px;border-radius:8px;border:1px solid var(--border);background:var(--panel);color:var(--text);font-size:13px}
.tz-search input:focus{outline:none;border-color:var(--accent)}
@media(max-width:600px){.tz-search input{max-width:none}}

/* 2026-09-02 工具页增强：加载态 / 图片预览 / 按钮禁用（仅新增类，不影响既有页面） */
.btn[disabled]{opacity:.6;cursor:not-allowed;filter:none}
.btn .tz-spin{width:14px;height:14px;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;display:inline-block;animation:tz-spin .7s linear infinite}
@keyframes tz-spin{to{transform:rotate(360deg)}}
.tz-preview{margin-top:12px;border:1px solid var(--border-strong);border-radius:10px;overflow:hidden;background:repeating-conic-gradient(#1c1f29 0% 25%,#15171f 0% 50%) 50%/18px 18px;display:none}
.tz-preview.show{display:block}
.tz-preview img{max-width:100%;display:block}
.tz-busy{display:inline-flex;align-items:center;gap:7px;color:var(--text-2);font-size:13px;margin-left:10px}
.tz-busy .tz-spin{width:13px;height:13px;border:2px solid rgba(102,126,234,.35);border-top-color:var(--primary-color);border-radius:50%;animation:tz-spin .7s linear infinite}