:root {
  --bg: #0f1320;
  --bg-soft: #171c2e;
  --card: #1c2236;
  --card-2: #232a42;
  --line: #2c3454;
  --text: #e8ebf5;
  --muted: #9aa3c0;
  --brand: #6c8cff;
  --brand-2: #8a6cff;
  --green: #34d399;
  --yellow: #fbbf24;
  --orange: #fb923c;
  --red: #f87171;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #20284a 0%, transparent 60%),
              radial-gradient(900px 500px at -10% 10%, #2a1f47 0%, transparent 55%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

.app { max-width: 1080px; margin: 0 auto; padding: 40px 20px 60px; }

.hero { text-align: center; margin-bottom: 32px; }
.hero h1 { font-size: 2rem; letter-spacing: 1px; }
.subtitle { color: var(--muted); margin-top: 8px; font-size: 0.95rem; }

.layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 22px;
  align-items: start;
}
/* 允许 grid 子项收缩，避免内容把卡片撑宽导致横向溢出 */
.layout > .card { min-width: 0; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(180deg, var(--card) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.35);
}

/* 密码展示 */
.password-display {
  display: flex;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
}
#passwordOutput {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 1.25rem;
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  letter-spacing: 1px;
  outline: none;
  min-width: 0;
}
.icon-btn {
  background: var(--card-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: 0.15s;
}
.icon-btn:hover { background: var(--brand); border-color: var(--brand); }

/* 强度 */
.strength { display: flex; align-items: center; gap: 12px; margin: 14px 0 4px; }
.strength-bar {
  flex: 1; height: 8px; background: var(--bg); border-radius: 999px; overflow: hidden;
}
.strength-bar span { display: block; height: 100%; width: 0; transition: 0.3s; border-radius: 999px; }
.strength-text { font-size: 0.82rem; color: var(--muted); min-width: 56px; text-align: right; }

/* 预设 */
.presets { margin: 20px 0; }
.label { font-size: 0.85rem; color: var(--muted); display: block; margin-bottom: 10px; }
.preset-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
.preset {
  text-align: left;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: 0.15s;
}
.preset:hover { border-color: var(--brand); transform: translateY(-2px); }
.preset.active { border-color: var(--brand); background: rgba(108,140,255,0.12); }
.preset .p-name { font-weight: 600; font-size: 0.92rem; }
.preset .p-desc { font-size: 0.74rem; color: var(--muted); margin-top: 2px; }

/* 选项 */
.options { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 6px; }
.length-row { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.length-row label { font-size: 0.9rem; white-space: nowrap; }
#lengthRange { flex: 1; accent-color: var(--brand); }
#lengthNum, #countNum {
  width: 70px; background: var(--bg); border: 1px solid var(--line);
  color: var(--text); border-radius: 8px; padding: 6px 8px; text-align: center;
}
.checks { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 480px) { .checks { grid-template-columns: 1fr; } }
.check { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; cursor: pointer; }
.check input { accent-color: var(--brand); width: 16px; height: 16px; }
.check code { background: var(--bg); padding: 1px 6px; border-radius: 5px; font-size: 0.78rem; color: var(--muted); }
.count-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; font-size: 0.9rem; }

.primary-btn {
  width: 100%; margin-top: 20px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  border: none; color: #fff; font-size: 1.05rem; font-weight: 600;
  padding: 13px; border-radius: 10px; cursor: pointer; transition: 0.15s;
}
.primary-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.primary-btn:active { transform: translateY(0); }

/* 批量列表 */
.batch-list { list-style: none; margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.batch-list li {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
}
.batch-list .pw { flex: 1; font-family: "SF Mono", Consolas, monospace; word-break: break-all; font-size: 0.95rem; }
.mini-btn {
  background: var(--card-2); border: 1px solid var(--line); color: var(--text);
  border-radius: 6px; padding: 4px 10px; cursor: pointer; font-size: 0.8rem; white-space: nowrap;
}
.mini-btn:hover { background: var(--brand); border-color: var(--brand); }

/* 保存区 */
.saved-head { display: flex; justify-content: space-between; align-items: center; }
.saved-head h2 { font-size: 1.15rem; }
.text-btn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 0.85rem; }
.text-btn:hover { color: var(--red); }
.hint { font-size: 0.78rem; color: var(--muted); margin: 8px 0 14px; }
.saved-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.saved-list li {
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px;
}
.saved-list .row1 { display: flex; align-items: center; gap: 8px; }
.saved-list .pw { flex: 1; font-family: "SF Mono", Consolas, monospace; word-break: break-all; }
.saved-list .meta { font-size: 0.72rem; color: var(--muted); margin-top: 4px; display: flex; justify-content: space-between; }
.saved-list .note-input {
  width: 100%; margin-top: 6px; background: var(--card); border: 1px solid var(--line);
  color: var(--text); border-radius: 6px; padding: 4px 8px; font-size: 0.82rem;
}
.empty-tip { color: var(--muted); font-size: 0.85rem; text-align: center; padding: 20px 0; }

.footer { text-align: center; color: var(--muted); font-size: 0.8rem; margin-top: 36px; }

/* toast */
.toast {
  position: fixed; left: 50%; bottom: 36px; transform: translateX(-50%) translateY(20px);
  background: #fff; color: #111; padding: 10px 20px; border-radius: 999px;
  font-size: 0.9rem; opacity: 0; pointer-events: none; transition: 0.25s; box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ====================== 手机端易用性优化 ====================== */
@media (max-width: 560px) {
  .app { padding: 24px 14px 48px; }
  .hero h1 { font-size: 1.6rem; }
  .subtitle { font-size: 0.88rem; }
  .card { padding: 16px; }

  /* 密码独占整行完整可读，按钮单独成行、加大点按区域 */
  .password-display { flex-wrap: wrap; padding: 12px; gap: 10px; }
  #passwordOutput {
    flex: 1 1 100%;
    font-size: 1.35rem;
    text-align: center;
    padding: 6px 0;
    white-space: nowrap;
    overflow-x: auto;
  }
  .password-display .icon-btn {
    flex: 1 1 0;
    min-height: 46px;
    font-size: 0.95rem;
    padding: 0;
  }

  /* 强度条 */
  .strength-text { font-size: 0.85rem; }

  /* 推荐方案：单列大卡片，便于点按 */
  .preset-grid { grid-template-columns: 1fr; gap: 12px; }
  .preset { padding: 14px 16px; min-height: 56px; }
  .preset .p-name { font-size: 1rem; }
  .preset .p-desc { font-size: 0.82rem; margin-top: 4px; }

  /* 长度控制：滑块独占一行，数字框加大 */
  .length-row { flex-wrap: wrap; gap: 10px 12px; }
  .length-row label { flex: 1 1 100%; }
  #lengthRange { flex: 1 1 auto; height: 28px; }
  #lengthNum, #countNum { width: 84px; height: 44px; font-size: 1.05rem; }

  /* 选项勾选：单列、加高点按区域、放大复选框 */
  .checks { grid-template-columns: 1fr; gap: 4px; }
  .check {
    min-height: 48px;
    font-size: 1rem;
    padding: 6px 8px;
    border-radius: 8px;
  }
  .check:active { background: var(--card-2); }
  .check input { width: 22px; height: 22px; }
  .check code { font-size: 0.82rem; }

  .count-row { font-size: 1rem; }

  .primary-btn { font-size: 1.15rem; padding: 16px; }

  /* 生成/已保存列表的小按钮加大为可点按尺寸 */
  .mini-btn { min-height: 40px; padding: 0 16px; font-size: 0.9rem; }
  .batch-list li, .saved-list li { padding: 12px; }
  .batch-list .pw, .saved-list .pw { font-size: 1rem; }
  .saved-list .note-input { min-height: 40px; font-size: 0.9rem; }
  .saved-head h2 { font-size: 1.2rem; }
  .text-btn { min-height: 40px; padding: 0 10px; font-size: 0.95rem; }
}