/* ============================================================
   ServiceLight 灯标站 — 航标台 / 海图视觉系统
   昼 = 水道图纸 · 夜 = 航道瞭望
   ============================================================ */

:root {
  --font-display: ui-serif, "New York", "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Cascadia Mono", monospace;

  /* 夜 · 航道（默认深色） */
  color-scheme: dark;
  --bg: #081420;
  --bg-deep: #050d16;
  --panel: #0e1c2b;
  --panel2: #122233;
  --border: #22384b;
  --border-faint: rgba(46, 74, 99, 0.38);
  --text: #dce8f0;
  --muted: #8fa5b5;
  --green: #2fc08e;
  --green-dim: rgba(47, 192, 142, 0.16);
  --red: #e2604f;
  --red-dim: rgba(226, 96, 79, 0.16);
  --amber: #d9a441;
  --amber-dim: rgba(217, 164, 65, 0.16);
  --blue: #7fa8d9;
  --blue-dim: rgba(127, 168, 217, 0.14);
  --lamp: #e8b04b;
  --lamp-glow: rgba(232, 176, 75, 0.55);
  --input: #0b1826;
  --focus: #7fa8d9;
}

:root[data-theme=light] {
  /* 昼 · 海图 */
  color-scheme: light;
  --bg: #e9eef1;
  --bg-deep: #dfe7eb;
  --panel: #f7fafb;
  --panel2: #eff4f6;
  --border: #c6d2d8;
  --border-faint: rgba(133, 154, 166, 0.30);
  --text: #142433;
  --muted: #5a6e7b;
  --green: #0b7a5c;
  --green-dim: rgba(11, 122, 92, 0.13);
  --red: #b3372c;
  --red-dim: rgba(179, 55, 44, 0.11);
  --amber: #96660f;
  --amber-dim: rgba(150, 102, 15, 0.13);
  --blue: #2b5e8c;
  --blue-dim: rgba(43, 94, 140, 0.11);
  --lamp: #c9861f;
  --lamp-glow: rgba(201, 134, 31, 0.45);
  --input: #ffffff;
  --focus: #2b5e8c;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme=dark]) {
    color-scheme: light;
    --bg: #e9eef1;
    --bg-deep: #dfe7eb;
    --panel: #f7fafb;
    --panel2: #eff4f6;
    --border: #c6d2d8;
    --border-faint: rgba(133, 154, 166, 0.30);
    --text: #142433;
    --muted: #5a6e7b;
    --green: #0b7a5c;
    --green-dim: rgba(11, 122, 92, 0.13);
    --red: #b3372c;
    --red-dim: rgba(179, 55, 44, 0.11);
    --amber: #96660f;
    --amber-dim: rgba(150, 102, 15, 0.13);
    --blue: #2b5e8c;
    --blue-dim: rgba(43, 94, 140, 0.11);
    --lamp: #c9861f;
    --lamp-glow: rgba(201, 134, 31, 0.45);
    --input: #ffffff;
    --focus: #2b5e8c;
  }
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box }
html { scroll-behavior: smooth }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
button, input, select, textarea { font: inherit; color: inherit }
button { cursor: pointer }
a { color: inherit; text-decoration: none }
a:hover { color: var(--blue) }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px }
[hidden] { display: none !important }
.muted { color: var(--muted) }

h1, h2, h3, .card-title, .detail-title h1 { font-family: var(--font-display); font-weight: 600; letter-spacing: 0.01em }

::selection { background: var(--blue-dim) }

/* ---------- 报头 ---------- */
.topbar {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(var(--bg), var(--bg-deep));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(18px, 3vw, 48px);
}
.brand { display: flex; align-items: center; gap: 12px }

/* 品牌小信标：静态同心环 + 灯芯 */
.brand-mark {
  position: relative;
  width: 40px; height: 40px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--lamp) 0 3px, transparent 4px),
    repeating-radial-gradient(circle at 50% 50%, transparent 0 5px, var(--border) 5px 6px, transparent 6px 11px);
  border: 1.5px solid var(--border);
  flex: none;
}
.brand-text strong { display: block; font-family: var(--font-display); font-size: 19px; letter-spacing: 0.01em; line-height: 1.15 }
.brand-text small { display: block; color: var(--muted); font-size: 11.5px; letter-spacing: 0.14em; margin-top: 2px }

.top-actions { display: flex; align-items: center; gap: 22px }
.nav-link { font-size: 14px; font-weight: 650; padding: 6px 2px; border-bottom: 2px solid transparent }
.nav-link:hover { border-bottom-color: var(--border) }
.theme-label { position: absolute; left: -9999px }
.top-actions select {
  width: auto;
  padding: 7px 30px 7px 11px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
}

/* ---------- 版心 ---------- */
.shell { max-width: 1280px; min-height: calc(100vh - 148px); margin: auto; padding: 30px clamp(18px, 3vw, 48px) 72px }
.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12.5px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: 20px clamp(18px, 3vw, 48px);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- 英雄区：信标盘 + 站况 ---------- */
.hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 26px;
  padding: 26px 28px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background:
    repeating-linear-gradient(90deg, transparent 0 27px, var(--border-faint) 27px 28px),
    repeating-linear-gradient(0deg, transparent 0 27px, var(--border-faint) 27px 28px),
    var(--panel);
  position: relative;
}
.hero--slim { grid-template-columns: 1fr; padding: 22px 28px; background: var(--panel) }
.hero--slim::before {
  content: "";
  position: absolute; left: 0; top: 10px; bottom: 10px; width: 3px;
  background: var(--border);
}

.eyebrow {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 11px;
  margin: 0 0 8px;
}
.hero h1 { font-size: clamp(26px, 3vw, 36px); margin: 0 0 6px; letter-spacing: 0 }
.hero-sub { color: var(--muted); font-size: 14px; margin: 0 }
.hero-copy { min-width: 0 }
.head-tools { position: absolute; right: 28px; top: 24px; display: flex; gap: 10px }

/* 信标盘：旋转光弧 = 站点总状态 */
.beacon {
  position: relative;
  width: 128px; height: 128px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background:
    radial-gradient(circle, transparent 0 34%, var(--panel2) 35% 100%);
  overflow: hidden;
  flex: none;
}
.beacon::before {
  /* 光弧扫描 */
  content: "";
  position: absolute; inset: -2px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0 68%, var(--lamp-glow) 80%, transparent 93%);
  opacity: 0;
}
.beacon::after {
  /* 灯芯 */
  content: "";
  position: absolute; left: 50%; top: 50%;
  width: 34px; height: 34px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, var(--lamp) 0 40%, transparent 70%);
  border: 1px solid var(--lamp);
}
.beacon-core { position: absolute; inset: 0; }

/* 全站正常：匀速扫描，灯常明 */
.beacon.s-ok::before { opacity: 1; animation: sweep 7s linear infinite }
/* 有待确认：Fl(2) 灯质 —— 双闪后长暗 */
.beacon.s-warn::before { opacity: 1; animation: sweep 7s linear infinite, fl2 12s steps(1, end) infinite }
.beacon.s-warn::after { animation: fl2 12s steps(1, end) infinite }
/* 有故障：光弧静止、灯芯转红 */
.beacon.s-down::before { opacity: 0; animation: none }
.beacon.s-down::after { background: radial-gradient(circle, var(--red) 0 40%, transparent 70%); border-color: var(--red); animation: heartbeat 2.4s ease-in-out infinite }
/* 无数据：熄灯 */
.beacon.s-unknown::before { opacity: 0 }
.beacon.s-unknown::after { background: none; border-color: var(--border); animation: none }

@keyframes sweep { to { transform: rotate(1turn) } }
@keyframes fl2 {
  0%, 5% { opacity: 1 }
  6%, 10% { opacity: 0.12 }
  11%, 16% { opacity: 1 }
  17%, 100% { opacity: 0.12 }
}
@keyframes heartbeat { 0%, 100% { transform: translate(-50%, -50%) scale(1) } 50% { transform: translate(-50%, -50%) scale(0.82) } }

/* ---------- 统计条 ---------- */
.summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 22px;
}
.stat {
  border: 1px solid var(--border);
  border-top: 2px solid var(--border);
  border-radius: 2px;
  background: var(--panel);
  padding: 12px 16px 11px;
}
.stat small { display: block; color: var(--muted); font-size: 12px; letter-spacing: 0.06em }
.stat strong { display: block; font-family: var(--font-mono); font-size: 26px; font-weight: 600; line-height: 1.25; margin-top: 2px }
.stat--ok { border-top-color: var(--green) }
.stat--down { border-top-color: var(--red) }
.stat--warn { border-top-color: var(--amber) }

/* ---------- 工具栏 ---------- */
.toolbar {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}
.toolbar input[type=search] {
  flex: 1;
  min-width: 0;
}
.toolbar select { width: auto }

input[type=text], input[type=search], input[type=password], input[type=email], input[type=number], select {
  padding: 8px 12px;
  background: var(--input);
  border: 1px solid var(--border);
  border-radius: 2px;
  width: 100%;
}
input:hover, select:hover { border-color: var(--muted) }

/* ---------- 按钮 ---------- */
.button, .ghost {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--panel2);
  color: var(--text);
  font-weight: 650;
  font-size: 14px;
}
.button:hover, .ghost:hover { border-color: var(--muted); color: var(--text) }
.button { background: var(--text); border-color: var(--text); color: var(--bg) }
.button:hover { background: var(--bg-deep); color: var(--text) }
.ghost.danger { border-color: var(--red); color: var(--red) }
.ghost.danger:hover { background: var(--red-dim) }

/* ---------- 状态徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 10px 3px 8px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 650;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.badge::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
  flex: none;
}
.badge.up { color: var(--green); background: var(--green-dim) }
.badge.down { color: var(--red); background: var(--red-dim) }
.badge.degraded, .badge.unknown { color: var(--amber); background: var(--amber-dim) }
.badge.unknown { color: var(--muted); background: var(--blue-dim) }
.badge.paused { color: var(--muted); background: var(--panel2); box-shadow: inset 0 0 0 1px var(--border) }

/* ---------- 灯标卡网格 ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 12px }
.card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  padding: 16px 18px 14px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--muted); transform: translateY(-1px) }
.card-top { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 2px }
.card-title { font-size: 18.5px; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap }
.card-sub { color: var(--muted); font-size: 12.5px; font-family: var(--font-mono); margin: 0 0 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap }
.card-foot {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 12.5px;
  font-family: var(--font-mono);
  margin-top: 11px;
}

/* 灯语带：检查历史条 */
.bars { display: flex; gap: 2px; align-items: stretch; height: 30px }
.bar { flex: 1 1 0; border-radius: 1px; min-width: 2px }
.bar.up { background: var(--green); opacity: 0.88 }
.bar.up:hover { opacity: 1 }
.bar.down { background: var(--red) }
.bar.unknown {
  background: repeating-linear-gradient(135deg, transparent 0 2px, var(--border-faint) 2px 3.5px);
}

/* ---------- 详情页 ---------- */
.back { display: inline-block; color: var(--muted); font-size: 13.5px; margin-bottom: 14px; font-family: var(--font-mono) }
.back:hover { color: var(--text) }
.detail-top { display: flex; align-items: center; gap: 14px; flex-wrap: wrap }
.detail-title { margin: 0; font-size: clamp(24px, 2.6vw, 34px) }
.detail-meta { color: var(--muted); font-size: 13.5px; font-family: var(--font-mono); margin: 4px 0 0 }

.panel { border: 1px solid var(--border); border-radius: 3px; background: var(--panel); padding: 20px 22px; margin-bottom: 14px }
.panel h2 { font-size: 17px; margin: 0 }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 6px }

.segment { display: inline-flex; border: 1px solid var(--border); border-radius: 2px; overflow: hidden }
.segment button {
  border: 0;
  background: var(--panel2);
  color: var(--muted);
  padding: 6px 13px;
  font-size: 13px;
  font-family: var(--font-mono);
}
.segment button + button { border-left: 1px solid var(--border) }
.segment button.active { background: var(--text); color: var(--bg); font-weight: 650 }

.chart-wrap { margin-top: 10px; padding-left: 52px }
.chart-plot { position: relative }
.chart { display: block; width: 100%; height: 220px; touch-action: none }
.chart .axis { stroke: var(--border-faint); stroke-width: 1 }
.chart .line { fill: none; stroke: var(--blue); stroke-width: 2; vector-effect: non-scaling-stroke }
.chart .area { fill: var(--blue-dim); stroke: none }
.chart .avgline { stroke: var(--amber); stroke-width: 1; stroke-dasharray: 5 4; vector-effect: non-scaling-stroke }
.chart .failure { fill: var(--red) }
.chart .cursor { stroke: var(--muted); stroke-width: 1; vector-effect: non-scaling-stroke }
.chart .cursor-dot { fill: var(--bg); stroke: var(--blue); stroke-width: 2 }

/* y 轴刻度（HTML 覆盖层，避免 SVG 拉伸导致文字变形；挂在 chart-plot 上与 SVG 同框） */
.chart-y {
  position: absolute;
  left: -52px;
  width: 44px;
  text-align: right;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 11px;
  font-family: var(--font-mono);
}
.chart-avg-label {
  position: absolute;
  left: 6px;
  transform: translateY(-50%);
  color: var(--amber);
  background: var(--panel);
  border: 1px solid var(--border-faint);
  border-radius: 2px;
  padding: 1px 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* 悬停信息浮层 */
.chart-tip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  min-width: 130px;
  max-width: 260px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 3px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
  padding: 8px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  transform: translate(-50%, -118%);
}
.chart-tip.tip-left { transform: translate(0, -118%) }
.chart-tip.tip-right { transform: translate(-100%, -118%) }
.chart-tip time { display: block; color: var(--muted); margin-bottom: 4px }
.chart-tip span { display: block }
.chart-tip .tip-ok { color: var(--green); font-weight: 650 }
.chart-tip .tip-down { color: var(--red); font-weight: 650 }
.chart-tip .tip-err { color: var(--red); margin-top: 4px; word-break: break-all }

.chart-labels {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
  font-family: var(--font-mono);
  margin-top: 6px;
}
.chart-labels .mid { color: var(--text) }
#chart { margin-top: 14px }

/* 近期检查台账 */
.history { display: flex; flex-direction: column; font-family: var(--font-mono); font-size: 13px }
.history-row {
  display: grid;
  grid-template-columns: 150px 76px 90px 1fr;
  gap: 12px;
  align-items: center;
  padding: 8px 2px;
  border-bottom: 1px solid var(--border-faint);
}
.history-row:last-child { border-bottom: 0 }
.history-row time { color: var(--muted) }
.history-row .error { color: var(--red); overflow: hidden; text-overflow: ellipsis; white-space: nowrap }

/* ---------- 管理台 ---------- */
.admin-layout { display: grid; grid-template-columns: 272px minmax(0, 1fr); gap: 14px; align-items: start }
.admin-side {
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  padding: 16px;
  position: sticky;
  top: 16px;
}
.admin-side h2 { font-size: 14px; margin: 0 0 12px; color: var(--muted); font-family: var(--font-mono); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase }
.side-actions { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px }
.side-actions .button, .side-actions .ghost { width: 100%; justify-content: center }
.admin-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 2px;
  background: none;
  padding: 9px 11px;
  color: var(--text);
}
.admin-item:hover { background: var(--panel2); border-color: var(--border) }
.admin-item.active { background: var(--panel2); border-color: var(--border); box-shadow: inset 2px 0 0 var(--blue) }
.admin-item span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600 }
.admin-item .muted { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; flex: none }
.admin-main { border: 1px solid var(--border); border-radius: 3px; background: var(--panel); padding: 22px 24px }
.admin-main h2 { margin: 0 0 16px; font-size: 19px }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px }
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0 }
.field.full { grid-column: 1 / -1 }
.field label { font-size: 12.5px; font-weight: 650; color: var(--muted); letter-spacing: 0.03em }
.field .help { color: var(--muted); font-size: 12px }
.check-field { display: flex; align-items: center; gap: 9px; padding: 6px 0; font-size: 14px; cursor: pointer }
.check-field input { width: auto; accent-color: var(--blue) }
.form-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap }

/* ---------- 登录 ---------- */
.login { max-width: 380px; margin: 48px auto 0; border: 1px solid var(--border); border-radius: 3px; background: var(--panel); padding: 30px 32px }
.login h1 { margin: 0 0 6px; font-size: 24px }
.login p { color: var(--muted); font-size: 13.5px; margin: 0 0 18px }
.login .button { width: 100%; margin-top: 6px }

/* ---------- 通知与空态 ---------- */
.notice {
  border: 1px solid var(--green);
  border-left-width: 3px;
  background: var(--green-dim);
  border-radius: 2px;
  padding: 10px 14px;
  font-size: 13.5px;
  margin-bottom: 14px;
}
.notice.error { border-color: var(--red); background: var(--red-dim) }

.empty {
  border: 1px dashed var(--border);
  border-radius: 3px;
  padding: 34px 20px;
  text-align: center;
  color: var(--muted);
}
.empty strong { display: block; color: var(--text); font-family: var(--font-display); font-size: 17px; margin-bottom: 4px }
.empty a { color: var(--blue) }
.empty .ghost { margin-top: 12px }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; text-align: left }
  .beacon { width: 96px; height: 96px }
  .head-tools { position: static; margin-top: 4px }
  .summary { grid-template-columns: repeat(2, 1fr) }
  .admin-layout { grid-template-columns: 1fr }
  .admin-side { position: static }
  .form-grid { grid-template-columns: 1fr }
  .field.full { grid-column: auto }
}
@media (max-width: 620px) {
  .topbar { flex-wrap: wrap; padding: 12px 18px }
  .brand-text small { display: none }
  .top-actions { gap: 12px }
  .shell { padding: 22px 16px 48px }
  .summary { grid-template-columns: repeat(2, 1fr); gap: 8px }
  .stat strong { font-size: 21px }
  .toolbar { flex-wrap: wrap }
  .toolbar input[type=search] { flex-basis: 100% }
  .toolbar select { flex: 1; min-width: 0 }
  .hero { padding: 20px 18px }
  .panel { padding: 16px }
  .panel-head { flex-wrap: wrap }
  .history-row { grid-template-columns: 110px 64px 1fr; gap: 8px }
  .history-row .error { display: none }
  .admin-main { padding: 16px }
}

/* ---------- 动效克制 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important }
  html { scroll-behavior: auto }
  .beacon.s-ok::before, .beacon.s-warn::before { opacity: 1; transform: rotate(35deg) }
}