/* ==========================================================================
   CDN 營運監控中心 — 明亮版設計系統
   純靜態；無任何後端相依
   ========================================================================== */

:root {
  color-scheme: light;

  /* 版面 */
  --plane:        #f4f6fa;
  --surface:      #ffffff;
  --surface-2:    #f8fafc;
  --surface-3:    #eef2f7;
  --border:       #e3e8ef;
  --border-strong:#cfd8e3;

  /* 文字 */
  --ink:          #131720;
  --ink-2:        #4b5563;
  --ink-3:        #7b8596;
  --ink-invert:   #ffffff;

  /* 品牌 */
  --brand:        #2a78d6;
  --brand-600:    #1f63b8;
  --brand-700:    #184f95;
  --brand-100:    #e4eefb;
  --brand-050:    #f2f7fe;

  /* 圖表色（經 CVD 驗證的固定順序，勿循環使用） */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  --series-5: #e87ba4;
  --series-6: #4a3aa7;

  /* 狀態（保留色，不可當作系列色） */
  --good:     #0ca30c;
  --good-bg:  #e8f7e8;
  --warning:  #fab219;
  --warn-bg:  #fdf3dd;
  --serious:  #ec835a;
  --serious-bg:#fdeee7;
  --critical: #d03b3b;
  --crit-bg:  #fbeaea;
  --info-bg:  #e7f0fb;

  /* 圖表鉻件 */
  --grid:     #e9edf3;
  --axis:     #cbd3de;

  /* 形狀 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --shadow-1: 0 1px 2px rgba(19,23,32,.05), 0 1px 3px rgba(19,23,32,.04);
  --shadow-2: 0 4px 12px rgba(19,23,32,.07), 0 2px 4px rgba(19,23,32,.04);
  --shadow-3: 0 12px 32px rgba(19,23,32,.12), 0 4px 8px rgba(19,23,32,.06);

  --sidebar-w: 232px;
  --topbar-h: 58px;

  --font: "Inter", system-ui, -apple-system, "Segoe UI", "Noto Sans TC",
          "PingFang TC", "Microsoft JhengHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--plane);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-600); text-decoration: none; }
a:hover { text-decoration: underline; }

button, input, select, textarea { font: inherit; color: inherit; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #d4dbe5; border-radius: 6px; border: 2px solid var(--plane); }
::-webkit-scrollbar-thumb:hover { background: #bcc6d4; }
::-webkit-scrollbar-track { background: transparent; }

.mono { font-family: var(--mono); font-size: .92em; }
.num  { font-variant-numeric: tabular-nums; }
.muted { color: var(--ink-3); }
.sec { color: var(--ink-2); }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }

/* ==========================================================================
   登入頁
   ========================================================================== */

.login-page {
  min-height: 100%;
  display: grid;
  grid-template-columns: 1fr;
  background:
    radial-gradient(1200px 600px at 78% -10%, #e2edfb 0%, rgba(226,237,251,0) 60%),
    radial-gradient(900px 500px at 5% 105%, #e6f6ef 0%, rgba(230,246,239,0) 55%),
    var(--plane);
}

@media (min-width: 900px) {
  .login-page { grid-template-columns: 1fr 440px; }
}

.login-hero {
  display: none;
  padding: 56px 60px;
  flex-direction: column;
  justify-content: space-between;
}
@media (min-width: 900px) { .login-hero { display: flex; } }

.login-hero h1 {
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: -.02em;
  margin: 0 0 14px;
  max-width: 14em;
}
.login-hero p { color: var(--ink-2); font-size: 15px; max-width: 34em; margin: 0; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px;
  margin-top: 36px;
  max-width: 520px;
}
.hero-stat {
  background: rgba(255,255,255,.72);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 14px 16px;
  backdrop-filter: blur(4px);
}
.hero-stat b { display: block; font-size: 22px; letter-spacing: -.02em; }
.hero-stat span { font-size: 12px; color: var(--ink-3); }

.hero-map { margin-top: 30px; max-width: 560px; opacity: .9; }

.login-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 28px;
}
.login-card { width: 100%; max-width: 344px; }

.login-card h2 { margin: 22px 0 4px; font-size: 21px; letter-spacing: -.01em; }
.login-card > p.sub { margin: 0 0 26px; color: var(--ink-3); font-size: 13px; }

.field { margin-bottom: 15px; }
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--surface);
  outline: none;
  transition: border-color .12s, box-shadow .12s;
}
.input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-100); }
.input::placeholder { color: #a8b1bf; }
textarea.input { height: auto; padding: 10px 12px; resize: vertical; line-height: 1.6; }
select.input { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4.5L6 8.5L10 4.5' stroke='%237b8596' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 28px; }

.pw-wrap { position: relative; }
.pw-toggle {
  position: absolute; right: 6px; top: 6px;
  height: 28px; padding: 0 9px;
  border: 0; background: transparent; color: var(--ink-3);
  font-size: 12px; cursor: pointer; border-radius: 5px;
}
.pw-toggle:hover { background: var(--surface-3); color: var(--ink-2); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 36px; padding: 0 14px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--r-sm);
  font-size: 13.5px; font-weight: 500;
  cursor: pointer;
  transition: background .12s, border-color .12s, box-shadow .12s;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:active { transform: translateY(.5px); }
.btn-primary {
  background: var(--brand); border-color: var(--brand); color: #fff;
  box-shadow: 0 1px 2px rgba(42,120,214,.3);
}
.btn-primary:hover { background: var(--brand-600); border-color: var(--brand-600); }
.btn-danger { color: var(--critical); border-color: #f0c9c9; background: #fff; }
.btn-danger:hover { background: var(--crit-bg); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: var(--surface-3); }
.btn-lg { height: 42px; width: 100%; font-size: 14.5px; }
.btn-sm { height: 29px; padding: 0 10px; font-size: 12.5px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.login-error {
  display: none;
  margin: 0 0 14px;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  background: var(--crit-bg);
  border: 1px solid #f2cfcf;
  color: #98292a;
  font-size: 13px;
}
.login-error.show { display: block; }

.login-hint {
  margin-top: 22px;
  padding: 12px 14px;
  background: var(--surface-2);
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-sm);
  font-size: 12.5px;
  color: var(--ink-2);
}
.login-hint b { color: var(--ink); }

.login-foot { margin-top: 26px; font-size: 11.5px; color: var(--ink-3); text-align: center; }

/* 品牌標記 */
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 32px; height: 32px; flex: 0 0 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand) 0%, #1b9ad1 55%, #1baf7a 100%);
  display: grid; place-items: center;
  box-shadow: 0 2px 6px rgba(42,120,214,.28);
}
.brand-mark svg { width: 19px; height: 19px; }
.brand-name { font-weight: 650; letter-spacing: -.01em; font-size: 15px; }
.brand-sub { font-size: 11px; color: var(--ink-3); letter-spacing: .04em; }

/* ==========================================================================
   後台版面
   ========================================================================== */

.app { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  z-index: 30;
}
.sidebar-head { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 10px 10px 16px; }
.nav-group-label {
  font-size: 10.5px; font-weight: 700; letter-spacing: .09em;
  color: #9aa4b2; text-transform: uppercase;
  padding: 14px 10px 6px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; margin-bottom: 1px;
  border-radius: var(--r-sm);
  color: var(--ink-2); font-size: 13.5px;
  cursor: pointer; user-select: none;
  border: 0; background: none; width: 100%; text-align: left;
}
.nav-item:hover { background: var(--surface-3); color: var(--ink); text-decoration: none; }
.nav-item.active { background: var(--brand-050); color: var(--brand-700); font-weight: 600; }
.nav-item.active svg { color: var(--brand); }
.nav-item svg { width: 17px; height: 17px; flex: 0 0 17px; color: #94a0b0; }
.nav-badge {
  margin-left: auto; min-width: 19px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--critical); color: #fff;
  font-size: 11px; font-weight: 600; display: grid; place-items: center;
  font-variant-numeric: tabular-nums;
}
.nav-badge.soft { background: var(--surface-3); color: var(--ink-2); }

.sidebar-foot { border-top: 1px solid var(--border); padding: 10px; }
.duty {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: var(--r-sm); background: var(--surface-2);
  font-size: 12px; color: var(--ink-2);
}
.duty .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 3px rgba(12,163,12,.14); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: var(--topbar-h);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px;
  padding: 0 20px;
  position: sticky; top: 0; z-index: 25;
}
.topbar h1 { font-size: 16px; margin: 0; font-weight: 650; letter-spacing: -.01em; }
.topbar .crumb { font-size: 12px; color: var(--ink-3); }
.topbar-spacer { flex: 1; }

.clock { font-size: 12.5px; color: var(--ink-2); font-variant-numeric: tabular-nums; }

.icon-btn {
  width: 33px; height: 33px; border-radius: var(--r-sm);
  border: 1px solid transparent; background: transparent;
  display: grid; place-items: center; cursor: pointer; color: var(--ink-2);
  position: relative;
}
.icon-btn:hover { background: var(--surface-3); }
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn .pip {
  position: absolute; top: 6px; right: 6px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--critical); border: 1.5px solid #fff;
}

.user-chip {
  display: flex; align-items: center; gap: 9px;
  padding: 4px 9px 4px 4px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  cursor: pointer;
}
.user-chip:hover { background: var(--surface-2); }
.avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg,#2a78d6,#1baf7a);
  color: #fff; font-size: 11px; font-weight: 700;
  display: grid; place-items: center; letter-spacing: .02em;
}
.user-chip .uname { font-size: 12.5px; font-weight: 600; }

.menu {
  position: absolute; top: calc(100% + 6px); right: 0;
  min-width: 212px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--r-md);
  box-shadow: var(--shadow-3); padding: 6px; z-index: 60;
}
.menu-head { padding: 9px 10px 10px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.menu-item {
  display: flex; align-items: center; gap: 9px;
  width: 100%; padding: 8px 10px; border: 0; background: none;
  border-radius: var(--r-sm); font-size: 13px; color: var(--ink-2);
  cursor: pointer; text-align: left;
}
.menu-item:hover { background: var(--surface-3); color: var(--ink); }
.menu-item.danger { color: var(--critical); }
.menu-item.danger:hover { background: var(--crit-bg); }
.menu-item svg { width: 15px; height: 15px; }

.dropdown { position: relative; }

.content { padding: 20px; flex: 1; }
.page { max-width: 1520px; margin: 0 auto; }

/* ==========================================================================
   卡片 / 通用元件
   ========================================================================== */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
}
.card-head {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px; border-bottom: 1px solid var(--border);
}
.card-head h3 { margin: 0; font-size: 13.5px; font-weight: 650; letter-spacing: -.005em; }
.card-head .sub { font-size: 11.5px; color: var(--ink-3); }
.card-head .spacer { flex: 1; }
.card-body { padding: 16px; }
.card-body.tight { padding: 10px 16px 14px; }

.grid { display: grid; gap: 16px; }
.g-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.g-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.g-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.g-6 { grid-template-columns: repeat(6, minmax(0,1fr)); }
.span-2 { grid-column: span 2; }
@media (max-width: 1300px) {
  .g-6 { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .g-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 1080px) {
  .g-3, .g-2 { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
}
@media (max-width: 720px) {
  .g-6, .g-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

/* 篩選列（置於所有圖表之上，統一作用範圍） */
.filterbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.seg {
  display: inline-flex; background: var(--surface); padding: 3px;
  border: 1px solid var(--border); border-radius: 8px;
}
.seg button {
  border: 0; background: none; padding: 5px 11px; border-radius: 6px;
  font-size: 12.5px; color: var(--ink-2); cursor: pointer;
}
.seg button:hover { color: var(--ink); }
.seg button.on { background: var(--brand-050); color: var(--brand-700); font-weight: 600; }

.live-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-2);
  background: var(--surface); border: 1px solid var(--border);
  padding: 5px 10px; border-radius: 999px;
}
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--good); animation: pulse 2.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.82); } }

/* KPI 統計磚 */
.stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 14px 15px 12px;
  box-shadow: var(--shadow-1);
  display: flex; flex-direction: column; gap: 4px; min-width: 0;
}
.stat .label { font-size: 12px; color: var(--ink-3); display: flex; align-items: center; gap: 6px; }
.stat .value { font-size: 25px; font-weight: 650; letter-spacing: -.025em; line-height: 1.2; }
.stat .value small { font-size: 13px; font-weight: 500; color: var(--ink-3); margin-left: 2px; letter-spacing: 0; }
.stat .foot { display: flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--ink-3); margin-top: 2px; }
.delta { display: inline-flex; align-items: center; gap: 3px; font-weight: 600; font-variant-numeric: tabular-nums; }
.delta.up { color: #006300; }
.delta.down { color: #a62f2f; }
.delta.flat { color: var(--ink-3); }
.stat .spark { margin-top: 6px; height: 30px; }

/* 徽章 */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  height: 21px; padding: 0 8px; border-radius: 999px;
  font-size: 11.5px; font-weight: 600; white-space: nowrap;
  border: 1px solid transparent;
}
.badge .bdot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-good { background: var(--good-bg); color: #0a7c0a; }
.badge-warn { background: var(--warn-bg); color: #8a5c00; }
.badge-serious { background: var(--serious-bg); color: #a2502c; }
.badge-crit { background: var(--crit-bg); color: #a72c2c; }
.badge-info { background: var(--info-bg); color: #1d5ba6; }
.badge-neutral { background: var(--surface-3); color: var(--ink-2); }

.pri { font-weight: 700; font-size: 11px; letter-spacing: .02em; }
.pri-P1 { background: var(--crit-bg); color: #a72c2c; }
.pri-P2 { background: var(--serious-bg); color: #a2502c; }
.pri-P3 { background: var(--info-bg); color: #1d5ba6; }

/* 表格 */
.tbl-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
table.tbl th {
  text-align: left; font-weight: 600; font-size: 11.5px; color: var(--ink-3);
  padding: 9px 12px; border-bottom: 1px solid var(--border);
  background: var(--surface-2); white-space: nowrap;
  position: sticky; top: 0; z-index: 1;
}
table.tbl td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.tbl tbody tr:last-child td { border-bottom: 0; }
table.tbl tbody tr.clickable { cursor: pointer; }
table.tbl tbody tr.clickable:hover { background: var(--brand-050); }
table.tbl td.num, table.tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }

.empty {
  padding: 46px 20px; text-align: center; color: var(--ink-3); font-size: 13px;
}
.empty svg { width: 34px; height: 34px; opacity: .35; margin-bottom: 10px; }

/* 圖表 */
.chart { width: 100%; display: block; overflow: visible; }
.chart text { font-family: var(--font); }
.chart-legend {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  padding: 2px 2px 10px; font-size: 12px; color: var(--ink-2);
}
.chart-legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend .swatch { width: 9px; height: 9px; border-radius: 2.5px; flex: 0 0 9px; }
.chart-tip {
  position: fixed; z-index: 90; pointer-events: none;
  background: #fff; border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-3); border-radius: 8px;
  padding: 8px 10px; font-size: 12px; min-width: 132px;
  opacity: 0; transition: opacity .1s;
}
.chart-tip.show { opacity: 1; }
.chart-tip .tt { font-weight: 600; margin-bottom: 5px; font-size: 11.5px; color: var(--ink-3); }
.chart-tip .tr { display: flex; align-items: center; gap: 7px; margin-top: 3px; }
.chart-tip .tr .sw { width: 8px; height: 8px; border-radius: 2px; }
.chart-tip .tr .tn { flex: 1; color: var(--ink-2); }
.chart-tip .tr .tv { font-weight: 650; font-variant-numeric: tabular-nums; }

.table-toggle { font-size: 11.5px; color: var(--ink-3); background: none; border: 0; cursor: pointer; padding: 3px 6px; border-radius: 5px; }
.table-toggle:hover { background: var(--surface-3); color: var(--ink-2); }

/* 地圖 */
.map-shell { position: relative; background: linear-gradient(180deg,#f7fafd 0%, #eef4fa 100%); border-radius: var(--r-md); overflow: hidden; }
.map-svg { width: 100%; display: block; }
.map-land { fill: #dde5ee; stroke: #cdd8e4; stroke-width: .6; }
.map-grat { stroke: #e6ecf3; stroke-width: .5; fill: none; }
.node-dot { cursor: pointer; transition: r .12s; }
.node-halo { opacity: .22; }
.map-legend {
  position: absolute; left: 12px; bottom: 10px;
  background: rgba(255,255,255,.92); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 11.5px; color: var(--ink-2);
  display: flex; gap: 14px; flex-wrap: wrap;
}
.map-legend .lg { display: inline-flex; align-items: center; gap: 6px; }
.map-legend i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

/* 工單 */
.ticket-layout { display: grid; grid-template-columns: 372px 1fr; gap: 16px; align-items: start; }
@media (max-width: 1180px) { .ticket-layout { grid-template-columns: 1fr; } }

.ticket-list { max-height: calc(100vh - 210px); overflow-y: auto; }
.ticket-row {
  display: block; width: 100%; text-align: left;
  padding: 12px 14px; border: 0; border-bottom: 1px solid var(--border);
  background: none; cursor: pointer;
}
.ticket-row:hover { background: var(--surface-2); }
.ticket-row.active { background: var(--brand-050); box-shadow: inset 3px 0 0 var(--brand); }
.ticket-row .r1 { display: flex; align-items: center; gap: 7px; margin-bottom: 4px; }
.ticket-row .tid { font-size: 11px; color: var(--ink-3); font-family: var(--mono); }
.ticket-row .ttl { font-size: 13.2px; font-weight: 600; line-height: 1.4; margin-bottom: 4px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ticket-row .r3 { display: flex; align-items: center; gap: 8px; font-size: 11.5px; color: var(--ink-3); }

.thread { padding: 4px 0; }
.msg { display: flex; gap: 11px; padding: 14px 0; border-bottom: 1px dashed var(--border); }
.msg:last-child { border-bottom: 0; }
.msg .av { width: 30px; height: 30px; flex: 0 0 30px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; font-weight: 700; color: #fff; }
.msg.customer .av { background: linear-gradient(135deg,#eb6834,#eda100); }
.msg.agent .av { background: linear-gradient(135deg,#2a78d6,#1baf7a); }
.msg.note .av { background: linear-gradient(135deg,#8a94a4,#b3bcc9); }
.msg .body { flex: 1; min-width: 0; }
.msg .mh { display: flex; align-items: baseline; gap: 8px; margin-bottom: 5px; flex-wrap: wrap; }
.msg .mh b { font-size: 13px; }
.msg .mh time { font-size: 11.5px; color: var(--ink-3); }
.msg .text { white-space: pre-wrap; word-break: break-word; font-size: 13.4px; line-height: 1.68; color: #24292f; }
.msg.note .text { background: var(--warn-bg); border-left: 3px solid var(--warning); padding: 9px 11px; border-radius: 0 6px 6px 0; font-size: 13px; }

.composer { border-top: 1px solid var(--border); padding: 13px 16px 16px; background: var(--surface-2); border-radius: 0 0 var(--r-lg) var(--r-lg); }
.composer-tabs { display: flex; gap: 4px; margin-bottom: 9px; }
.composer-tabs button {
  border: 0; background: none; padding: 5px 10px; border-radius: 6px;
  font-size: 12.5px; color: var(--ink-3); cursor: pointer;
}
.composer-tabs button.on { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: var(--shadow-1); }
.composer-actions { display: flex; align-items: center; gap: 8px; margin-top: 9px; flex-wrap: wrap; }

.kv { display: grid; grid-template-columns: 82px 1fr; gap: 7px 10px; font-size: 12.5px; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; color: var(--ink); word-break: break-word; }

/* 時間軸 */
.timeline { position: relative; padding-left: 20px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 5px; bottom: 5px; width: 1px; background: var(--border); }
.tl-item { position: relative; padding: 0 0 16px; }
.tl-item::before {
  content: ""; position: absolute; left: -18px; top: 5px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--axis);
}
.tl-item.crit::before { border-color: var(--critical); }
.tl-item.warn::before { border-color: var(--warning); }
.tl-item.good::before { border-color: var(--good); }
.tl-item .tl-h { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; font-weight: 600; }
.tl-item .tl-t { font-size: 11.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.tl-item .tl-d { font-size: 12.5px; color: var(--ink-2); margin-top: 3px; }

/* 知識庫 */
.kb-layout { display: grid; grid-template-columns: 250px 1fr; gap: 16px; align-items: start; }
@media (max-width: 1080px) { .kb-layout { grid-template-columns: 1fr; } }
.kb-article h4 { margin: 0 0 6px; font-size: 16px; }
.kb-body { white-space: pre-wrap; font-size: 13.5px; line-height: 1.78; color: #2a3038; }
.kb-item { padding: 11px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.kb-item:hover { background: var(--surface-2); }
.kb-item.active { background: var(--brand-050); box-shadow: inset 3px 0 0 var(--brand); }
.kb-item .t { font-size: 13px; font-weight: 600; line-height: 1.45; }
.kb-item .m { font-size: 11.5px; color: var(--ink-3); margin-top: 3px; }

.chip {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: var(--surface-3); color: var(--ink-2); font-size: 11px;
  margin: 0 4px 4px 0;
}

/* 分頁 */
.pager { display: flex; align-items: center; gap: 8px; padding: 11px 16px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--ink-3); }
.pager .spacer { flex: 1; }

/* Toast */
.toasts { position: fixed; right: 18px; bottom: 18px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--brand);
  box-shadow: var(--shadow-3); border-radius: 9px; padding: 11px 14px;
  font-size: 13px; min-width: 250px; max-width: 360px;
  animation: slideIn .22s ease-out;
}
.toast.good { border-left-color: var(--good); }
.toast.warn { border-left-color: var(--warning); }
.toast.crit { border-left-color: var(--critical); }
.toast b { display: block; font-size: 13px; margin-bottom: 2px; }
.toast span { color: var(--ink-2); font-size: 12.5px; }
@keyframes slideIn { from { opacity: 0; transform: translateX(14px); } to { opacity: 1; transform: none; } }

/* 抽屜 / 彈窗 */
.overlay {
  position: fixed; inset: 0; background: rgba(19,23,32,.34);
  z-index: 100; display: flex; align-items: center; justify-content: center; padding: 24px;
  animation: fade .14s ease-out;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow-3);
  width: 100%; max-width: 560px; max-height: 88vh; overflow: auto;
}
.modal-head { display: flex; align-items: center; gap: 10px; padding: 15px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { margin: 0; font-size: 15px; }
.modal-body { padding: 18px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 13px 18px; border-top: 1px solid var(--border); background: var(--surface-2); border-radius: 0 0 var(--r-lg) var(--r-lg); }

/* 節點詳情 */
.node-metrics { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.nm { background: var(--surface-2); border-radius: 8px; padding: 9px 11px; }
.nm .l { font-size: 11px; color: var(--ink-3); }
.nm .v { font-size: 16px; font-weight: 650; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }

.meter { height: 6px; background: var(--surface-3); border-radius: 3px; overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 3px; background: var(--brand); }
.meter i.warn { background: var(--warning); }
.meter i.crit { background: var(--critical); }

/* 日誌 */
.logline { font-family: var(--mono); font-size: 11.8px; white-space: nowrap; }
.code-block {
  background: #f6f8fb; border: 1px solid var(--border); border-radius: 8px;
  padding: 11px 13px; font-family: var(--mono); font-size: 12px;
  overflow-x: auto; color: #2a3038; line-height: 1.6;
}

/* ==========================================================================
   窄螢幕 / 平板 / 手機
   ========================================================================== */

@media (max-width: 980px) {
  .app { flex-direction: column; }
  .sidebar {
    width: 100%; flex: none; height: auto; position: sticky; top: 0;
    border-right: 0; border-bottom: 1px solid var(--border);
  }
  .sidebar-head { padding: 10px 14px; }
  .sidebar-nav {
    display: flex; gap: 4px; overflow-x: auto; overflow-y: hidden;
    padding: 6px 10px 8px; flex: none;
  }
  .sidebar-nav::-webkit-scrollbar { height: 0; }
  .nav-group-label { display: none; }
  .nav-item { width: auto; white-space: nowrap; padding: 7px 11px; margin: 0; }
  .nav-item span:not(.nav-badge) { font-size: 13px; }
  .sidebar-foot { display: none; }
  .topbar { padding: 0 14px; gap: 8px; }
  .topbar .crumb { display: none; }
  .clock { display: none; }
  .content { padding: 14px; }
  .ticket-list { max-height: 420px; }
  .kb-layout > .card:first-child > div[id] { max-height: 320px !important; }
}

@media (max-width: 620px) {
  .g-6, .g-4, .g-3, .g-2 { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
  .user-chip .uname { display: none; }
  .brand-sub { display: none; }
  .brand-name { font-size: 14px; }
  .topbar h1 { font-size: 15px; }
  .card-head { flex-wrap: wrap; }
  .stat .value { font-size: 22px; }
  .filterbar { gap: 8px; }
  .seg { overflow-x: auto; max-width: 100%; }
  .modal { max-height: 92vh; }
  .kv { grid-template-columns: 74px 1fr; }
  .modal .node-metrics { grid-template-columns: repeat(2, 1fr) !important; }
  .tbl-wrap table.tbl { min-width: 600px; }
  .overlay { padding: 12px; }
}

@media print { .sidebar, .topbar, .filterbar { display: none; } }

/* ==========================================================================
   研發後台（RD）主題：沿用同一套版面，改變品牌色以區隔兩個入口
   ========================================================================== */

.theme-rd {
  --brand:     #4a3aa7;
  --brand-600: #3e3090;
  --brand-700: #322678;
  --brand-100: #e5e1f7;
  --brand-050: #f5f3fd;
}
.theme-rd .brand-mark {
  background: linear-gradient(135deg, #4a3aa7 0%, #2a78d6 58%, #1baf7a 100%);
  box-shadow: 0 2px 6px rgba(74, 58, 167, .3);
}
.theme-rd .avatar { background: linear-gradient(135deg, #4a3aa7, #2a78d6); }
.theme-rd .btn-primary { box-shadow: 0 1px 2px rgba(74, 58, 167, .3); }
.theme-rd .login-page {
  background:
    radial-gradient(1200px 600px at 78% -10%, #e9e5f9 0%, rgba(233,229,249,0) 60%),
    radial-gradient(900px 500px at 5% 105%, #e4eefb 0%, rgba(228,238,251,0) 55%),
    var(--plane);
}
.theme-rd .msg.agent .av { background: linear-gradient(135deg, #4a3aa7, #2a78d6); }
.theme-rd .msg.customer .av { background: linear-gradient(135deg, #eb6834, #eda100); }