/* ui.css — 优泰国际物流系统外壳 v3（深蓝侧栏 + 白底 + 登录/注册/改密层）
   加载于各页原样式之后，做全局布局/品牌/登录层覆盖；组件样式仍走各页原 css。 */
:root {
  --ui-navy-1: #1c3a66;
  --ui-navy-2: #0c1e38;
  --ui-navy-grad: linear-gradient(180deg, #1d3c6a 0%, #122a4e 55%, #0b1c33 100%);
  --ui-accent: #2f7bff;
  --ui-accent-2: #4c93ff;
  --ui-bg: #eef2f8;
  --ui-line: #e3e8f0;
}

html, body { height: 100%; }

body {
  margin-left: 236px;
  background: var(--ui-bg);
}

/* ---------- 左侧深蓝导航栏 ---------- */
.side-nav {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 236px;
  background: var(--ui-navy-grad);
  color: #fff;
  display: flex;
  flex-direction: column;
  z-index: 120;
  box-shadow: 2px 0 14px rgba(10, 26, 50, .14);
}

/* 品牌区：LOGO 图 + 公司名 */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .10);
}
.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .18);
  flex: none;
}
.brand-txt { min-width: 0; }
.brand-cn {
  display: block;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .5px;
  color: #fff;
  white-space: nowrap;
}
.brand-en {
  display: block;
  margin-top: 4px;
  font-size: 8.5px;
  letter-spacing: 1.1px;
  color: rgba(255, 255, 255, .45);
  white-space: nowrap;
}

/* 导航项 */
.side-links {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.side-links a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 11px 13px;
  border-radius: 9px;
  color: #c4d3e8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: background .15s, color .15s, transform .1s;
}
.side-links a .nav-ic { width: 21px; text-align: center; font-size: 15px; }
.side-links a:hover { background: rgba(255, 255, 255, .07); color: #fff; }
.side-links a.active {
  background: linear-gradient(90deg, #2a6ee6, var(--ui-accent));
  color: #fff;
  box-shadow: 0 4px 12px rgba(38, 105, 230, .35);
}
.side-links a.active::before {
  content: "";
  width: 3px; height: 16px;
  border-radius: 3px;
  background: #fff;
  margin-left: -16px;
  margin-right: 2px;
  box-shadow: 0 0 6px rgba(255, 255, 255, .6);
}

/* 底部：当前账号 + 修改密码 + 退出登录 */
.side-foot {
  padding: 12px;
  border-top: 1px solid rgba(255, 255, 255, .10);
}
.side-user {
  padding: 2px 4px 10px;
  font-size: 12px;
  color: #9fb4d0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.logout-btn {
  width: 100%;
  padding: 8px 12px;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, .06);
  color: #c4d3e8;
  font-size: 12.5px;
  cursor: pointer;
  text-align: left;
  transition: background .15s, color .15s;
}
.logout-btn + .logout-btn { margin-top: 6px; }
.logout-btn:hover { background: rgba(255, 255, 255, .14); color: #fff; }

/* 未登录锁定时禁滚 */
body.login-locked { overflow: hidden; }

/* ---------- 页面头部：从蓝色大条改为白底细条，与白底内容呼应 ---------- */
header {
  background: #fff;
  color: #1c2330;
  padding: 18px 28px 16px;
  border-bottom: 1px solid var(--ui-line);
}
header h1 { color: var(--ui-navy-1); font-size: 19px; }
header p { color: #6b7686; }

/* 主内容区微调：卡片更柔和 */
main { padding-top: 4px; }
.card {
  border-radius: 12px;
  border: 1px solid var(--ui-line);
  box-shadow: 0 1px 3px rgba(15, 32, 62, .05);
}
footer { opacity: .92; }

/* ---------- 登录 / 注册 / 修改密码层（纯前端门禁，账号表存 localStorage） ---------- */
.login-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 300;
  align-items: center;
  justify-content: center;
  background: radial-gradient(120% 120% at 30% 0%, rgba(28, 58, 102, .55), rgba(8, 18, 36, .82));
  backdrop-filter: blur(4px);
}
.login-overlay.show { display: flex; }

.login-card {
  width: 368px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(6, 18, 40, .35);
  overflow: hidden;
}
.login-brand {
  background: var(--ui-navy-grad);
  color: #fff;
  padding: 26px 24px 22px;
  text-align: center;
}
.login-brand .lb-cn {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 3px;
}
.login-brand .lb-en {
  margin-top: 6px;
  font-size: 9.5px;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, .55);
}
.login-body { padding: 20px 24px 24px; }
.login-body label.lf {
  display: block;
  margin-bottom: 13px;
  font-size: 12px;
  color: #5a6675;
}
.login-body input[type="text"],
.login-body input[type="password"] {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 11px;
  border: 1px solid var(--ui-line);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.login-body input[type="text"]:focus,
.login-body input[type="password"]:focus {
  border-color: var(--ui-accent);
  box-shadow: 0 0 0 3px rgba(47, 123, 255, .15);
}
.login-err {
  display: none;
  color: #c62828;
  font-size: 12.5px;
  margin: 2px 0 10px;
}
.login-err.show { display: block; }
.login-ok {
  display: none;
  color: #2e7d32;
  font-size: 12.5px;
  margin: 2px 0 10px;
}
.login-ok.show { display: block; }

/* 卡片底部操作行：注册入口 / 返回登录 / 取消 */
.login-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 12.5px;
  color: #8893a2;
}
.link-btn {
  border: none;
  background: none;
  padding: 2px 4px;
  color: var(--ui-accent);
  font-size: 12.5px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link-btn:hover { color: #1c55c9; }
.login-btn {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: linear-gradient(90deg, #2568e0, var(--ui-accent));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 6px;
  cursor: pointer;
  transition: filter .15s;
}
.login-btn:hover { filter: brightness(1.06); }
.login-remember {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12px;
  color: #8893a2;
  cursor: pointer;
}
.login-overlay.shake { animation: login-shake .45s; }
@keyframes login-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(9px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(4px); }
}

/* 窄屏：侧栏收窄 */
@media (max-width: 1080px) {
  body { margin-left: 200px; }
  .side-nav { width: 200px; }
  .brand-mark { font-size: 19px; }
}