/* Modbus IoT 管理系统 - 全局样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #1664ff;
  --primary-dark: #0f4fd6;
  --bg: #f4f6fa;
  --card: #ffffff;
  --border: #e3e7ef;
  --text: #1f2430;
  --text-light: #6b7280;
  --ok: #16a34a;
  --err: #dc2626;
  --warn: #d97706;
  --unknown: #9ca3af;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0b1e45 0%, #1664ff 100%);
}
.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px 36px;
  width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.login-card h1 { font-size: 22px; margin-bottom: 6px; }
.login-card .sub { color: var(--text-light); margin-bottom: 24px; }
.login-card .field { margin-bottom: 16px; }
.login-card label { display: block; margin-bottom: 6px; color: var(--text-light); }
.login-card input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; outline: none;
}
.login-card input:focus { border-color: var(--primary); }
.login-card .err { color: var(--err); font-size: 13px; min-height: 18px; margin-bottom: 8px; }
.login-card button {
  width: 100%; padding: 11px; background: var(--primary); color: #fff;
  border: none; border-radius: 8px; font-size: 15px; cursor: pointer;
}
.login-card button:hover { background: var(--primary-dark); }

/* ---------- 主界面布局 ---------- */
.topbar {
  background: #0f1e3d; color: #fff; display: flex; align-items: center;
  padding: 0 20px; height: 54px; position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.topbar .brand { font-size: 17px; font-weight: 700; margin-right: 32px; white-space: nowrap; }
.topbar nav { display: flex; gap: 4px; flex: 1; }
.topbar nav a {
  color: #c7d2e8; text-decoration: none; padding: 8px 14px; border-radius: 8px;
  cursor: pointer; font-size: 14px;
}
.topbar nav a:hover { color: #fff; background: rgba(255,255,255,.08); }
.topbar nav a.active { color: #fff; background: var(--primary); }
.topbar .user { display: flex; align-items: center; gap: 12px; }
.topbar .user .role-badge {
  background: rgba(255,255,255,.15); padding: 3px 10px; border-radius: 12px; font-size: 12px;
}
.topbar .user a { color: #c7d2e8; cursor: pointer; text-decoration: none; }
.topbar .user a:hover { color: #fff; }

main { max-width: 1840px; margin: 20px auto; padding: 0 20px 60px; }
.page { display: none; }
.page.active { display: block; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.page-head h2 { font-size: 18px; }
.page-head .desc { color: var(--text-light); margin-top: 4px; font-size: 13px; display: none; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px; margin-bottom: 16px;
}

/* ---------- 设备卡片 ---------- */
.device-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; }
.device-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; cursor: pointer; transition: box-shadow .15s, transform .15s;
}
.device-card:hover { box-shadow: 0 6px 18px rgba(15,31,61,.10); transform: translateY(-2px); }
.device-card .d-name { font-size: 15px; font-weight: 600; margin-bottom: 2px; display: flex; justify-content: space-between; align-items: center; }
.device-card .d-ip { color: var(--text-light); font-size: 12px; margin-bottom: 2px; }
.device-card .d-threshold { color: var(--text-light); font-size: 12px; margin-bottom: 10px; }
.device-card .d-value { font-size: 30px; font-weight: 700; font-variant-numeric: tabular-nums; }
.device-card .d-value .d-unit { font-size: 15px; font-weight: 600; margin-left: 3px; }
.device-card .d-value.placeholder { color: var(--unknown); font-size: 18px; }
.device-card .d-meta { margin-top: 10px; display: flex; justify-content: space-between; align-items: center; color: var(--text-light); font-size: 12px; }
.badge { padding: 2px 10px; border-radius: 12px; font-size: 12px; color: #fff; }
.badge.ok { background: var(--ok); }
.badge.error { background: var(--err); }
.badge.unknown { background: var(--unknown); }
.badge.fault { background: var(--warn); }
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; }
.tag-listen { background: #eef2ff; color: #3730a3; }
.text-light { color: var(--text-light); }

/* 回路-绑定用户列表 */
#loop_users_checkboxes {
  display: flex; flex-direction: column;
  border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 12px; max-height: 240px; overflow: auto;
  background: #fafbfc;
}
.loop-user-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 6px; border-bottom: 1px dashed var(--border); cursor: pointer;
}
.loop-user-row:last-child { border-bottom: none; }
.loop-user-row:hover { background: #fff; }
.loop-user-row input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer; }
.loop-user-name { font-size: 14px; font-weight: 500; }
.loop-user-role {
  margin-left: auto; padding: 1px 8px; border-radius: 10px; font-size: 12px;
  background: #eef2ff; color: #3730a3;
}
.loop-user-role.viewer { background: #f3f4f6; color: #4b5563; }
.loop-user-role.operator { background: #ecfdf5; color: #047857; }
.loop-user-role.admin { background: #fef2f2; color: #b91c1c; }

/* ---------- 表格 ---------- */
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #f8fafc; color: var(--text-light); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: #f8fafc; }
td.mono { font-variant-numeric: tabular-nums; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border);
  background: #fff; color: var(--text); font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--err); border-color: #f3c4c4; }
.btn.danger:hover { background: #fef2f2; border-color: var(--err); }
.btn.sm, .btn.small { padding: 4px 10px; font-size: 13px; }
.btn.small.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; margin-bottom: 6px; color: var(--text-light); font-size: 13px; }
.field input, .field select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; background: #fff;
}
.field input:focus, .field select:focus { border-color: var(--primary); }
.field .hint { color: var(--text-light); font-size: 12px; margin-top: 4px; }

/* 启用采集：文字在前、勾选框紧跟（空两格），不被 width:100% 拉伸 */
#dev_enable_label {
  display: flex; align-items: center; gap: 10px; margin-bottom: 0;
  color: var(--text); font-size: 14px; cursor: pointer;
}
#dev_enabled { width: 16px; height: 16px; accent-color: var(--primary); margin: 0; }

/* 接入方式双卡片单选 */
.access-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.access-card {
  display: flex; flex-direction: column; gap: 2px;
  border: 1.5px solid var(--border); border-radius: 10px;
  padding: 10px 14px; cursor: pointer; background: #fafbfc;
}
.access-card:hover { border-color: var(--primary); }
.access-card:has(input:checked) { border-color: var(--primary); background: #eef4ff; }
.access-card input[type="radio"] { accent-color: var(--primary); margin-bottom: 2px; }
.access-card .ac-title { font-size: 14px; font-weight: 600; }
.access-card .ac-desc { font-size: 12px; color: var(--text-light); }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(15,31,61,.5); z-index: 200;
  display: none; align-items: center; justify-content: center;
}
.modal-mask.show { display: flex; }
.modal {
  background: #fff; border-radius: 12px; width: 560px; max-width: 92vw; max-height: 88vh;
  overflow: auto; padding: 22px 24px; box-shadow: 0 24px 64px rgba(0,0,0,.3);
  position: relative;
}
.modal-x {
  position: absolute; top: 10px; right: 14px; width: 30px; height: 30px; line-height: 28px;
  text-align: center; font-size: 22px; color: var(--text-light); cursor: pointer;
  border-radius: 6px; user-select: none; background: transparent; border: none;
}
.modal-x:hover { background: rgba(22,100,255,.1); color: #1664ff; }
.modal h3 { margin-bottom: 16px; font-size: 17px; }
.modal .actions { margin-top: 18px; display: flex; justify-content: flex-end; gap: 10px; }
.modal .msg { margin-top: 12px; font-size: 13px; min-height: 18px; }
.modal .msg.ok { color: var(--ok); }
.modal .msg.err { color: var(--err); }

/* ---------- 弹窗内曲线 ---------- */
.chart-box { position: relative; height: 260px; margin-top: 10px; }
.chart-toolbar { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.section-title { font-size: 13px; color: var(--text-light); margin: 14px 0 6px; }

/* ---------- 空态 ---------- */
.empty { text-align: center; color: var(--text-light); padding: 48px 0; }
.empty .big { font-size: 40px; margin-bottom: 10px; }

/* ---------- 设置项 ---------- */
.settings-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); }
.settings-row:last-child { border-bottom: none; }
.settings-row .info b { display: block; }
.settings-row .info span { color: var(--text-light); font-size: 12px; }
.settings-row input, .settings-row select { width: 160px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; }

/* ---------- 传感器配置 ---------- */
.sensor-cfg { max-height: 340px; overflow: auto; }
.sensor-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px 12px; margin-bottom: 10px; background: #fafbfc;
}
.sensor-row:last-child { margin-bottom: 0; }
.sensor-row .s-title {
  grid-column: 1 / -1; font-size: 13px; color: var(--primary); font-weight: 600;
  border-bottom: 1px dashed var(--border); padding-bottom: 6px; margin-bottom: 4px;
}
.sensor-row input, .sensor-row select { width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; outline: none; background: #fff; }
.sensor-row input:focus, .sensor-row select:focus { border-color: var(--primary); }
.sensor-row label { font-size: 11px; color: var(--text-light); display: block; margin-bottom: 2px; }

/* 传感器标签 */
.sensor-tab { display: inline-block; padding: 6px 14px; margin: 0 8px 8px 0; border: 1px solid var(--border); border-radius: 16px; cursor: pointer; font-size: 13px; background: #fff; }
.sensor-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.sensor-tab.alarm { border-color: var(--err); color: var(--err); font-weight: 600; }
.sensor-tab.alarm.active { background: var(--err); color: #fff; }

/* 报警状态 */
.alarm-tag { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; color: #fff; }
.alarm-tag.high { background: var(--err); }
.alarm-tag.low { background: var(--warn); }
.alarm-tag.fault { background: #d4a017; }
.alarm-tag.normal { background: var(--ok); }

/* 报警记录筛选栏 */
.alarm-filter { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; padding: 12px 16px; }
.alarm-filter label { color: var(--text-light); font-size: 13px; }
.alarm-filter select {
  padding: 6px 10px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 13px; background: #fff; outline: none; min-width: 140px;
}
.alarm-filter select:focus { border-color: var(--primary); }

/* 页头工具（admin 查看用户筛选） */
.head-tools { display: flex; align-items: center; gap: 12px; }
.viewer-filter { display: inline-flex; align-items: center; gap: 8px; }
.viewer-filter .head-label,
.alarm-filter .viewer-filter label { color: var(--text-light); font-size: 13px; }
.alarm-filter input[type="datetime-local"] {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; background: #fff; outline: none;
}
.alarm-filter input[type="datetime-local"]:focus { border-color: var(--primary); }
.quick-range { display: inline-flex; gap: 6px; align-items: center; }
.viewer-filter select {
  padding: 6px 10px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 13px; background: #fff; outline: none; min-width: 120px;
}
.viewer-filter select:focus { border-color: var(--primary); }

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  .device-grid { grid-template-columns: 1fr 1fr; }
  .sensor-row { grid-template-columns: 1fr 1fr; }
}