:root {
  color-scheme: light;
  --ink: #152536;
  --ink-soft: #43576c;
  --muted: #6b7e91;
  --line: #dce5ed;
  --line-strong: #bacbd9;
  --canvas: #f5f8fa;
  --surface: #ffffff;
  --navy: #123d59;
  --navy-dark: #0d3048;
  --blue-pale: #e7f1f7;
  --teal: #157a80;
  --teal-pale: #e5f5f2;
  --amber: #935f13;
  --amber-pale: #fff5dd;
  --red: #ab3a37;
  --red-pale: #fff0ed;
  --radius: 10px;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--canvas); line-height: 1.55; }
button, input, select { font: inherit; }
button { cursor: pointer; }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #74b9cd; outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.clipboard-temp { position: fixed; opacity: 0; pointer-events: none; }
.container { width: min(100% - 2rem, 1180px); margin-inline: auto; }
.muted { color: var(--muted); }
.eyebrow { color: var(--teal); font-size: .73rem; font-weight: 750; letter-spacing: .11em; line-height: 1.3; margin: 0 0 .5rem; text-transform: uppercase; }
.eyebrow-light { color: #85c7d1; }

.brand { display: inline-flex; align-items: center; gap: .6rem; font-size: 1.02rem; font-weight: 750; text-decoration: none; letter-spacing: .01em; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 7px; background: var(--navy); color: #fff; font-size: 1.15rem; line-height: 1; }
.brand-light { color: #fff; }
.brand-light .brand-mark { background: #ffffff1b; border: 1px solid #ffffff44; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.header-nav { display: flex; align-items: center; gap: .2rem; }
.nav-link { padding: .5rem .75rem; border-radius: 6px; font-size: .88rem; font-weight: 600; color: var(--ink-soft); text-decoration: none; white-space: nowrap; }
.nav-link:hover, .nav-link.is-current { background: var(--blue-pale); color: var(--navy); }
.nav-button { border: 0; background: transparent; }
.page-content { padding-block: 2.5rem 4rem; }
.page-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.page-heading h1 { margin: 0 0 .4rem; font-size: clamp(1.8rem, 3vw, 2.35rem); letter-spacing: -.035em; line-height: 1.2; }
.page-heading .muted { margin: 0; font-size: .93rem; }
.heading-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.status-pill { display: inline-flex; align-items: center; min-height: 1.7rem; padding: .2rem .7rem; border-radius: 999px; color: var(--navy); background: var(--blue-pale); font-size: .78rem; font-weight: 700; white-space: nowrap; }
.status-pill.active { color: #17615d; background: var(--teal-pale); }
.status-pill.warning { color: var(--amber); background: var(--amber-pale); }
.status-pill.danger { color: var(--red); background: var(--red-pale); }
.status-pill.muted { color: var(--muted); background: #eef2f5; }
.notice { padding: .8rem 1rem; margin-bottom: 1.25rem; background: var(--blue-pale); border: 1px solid #bfd5e5; border-radius: var(--radius); color: var(--navy); font-size: .9rem; }
.notice-warning { background: var(--amber-pale); border-color: #ebd7a1; color: var(--amber); }
.notice.error { background: var(--red-pale); border-color: #ebc4bf; color: var(--red); }

.button { display: inline-flex; align-items: center; justify-content: center; gap: .35rem; min-height: 2.55rem; padding: .55rem .95rem; border: 1px solid transparent; border-radius: 7px; font-size: .88rem; font-weight: 700; line-height: 1.3; text-align: center; text-decoration: none; transition: background-color .15s, border-color .15s; }
.button:disabled { opacity: .55; cursor: not-allowed; }
.button-primary { background: var(--navy); color: #fff; }
.button-primary:not(:disabled):hover { background: var(--navy-dark); }
.button-secondary { background: #fff; color: var(--navy); border-color: var(--line-strong); }
.button-secondary:not(:disabled):hover { background: var(--blue-pale); border-color: #94b5c9; }
.button-danger { background: #fff; color: var(--red); border-color: #e5b8b3; }
.button-danger:not(:disabled):hover { background: var(--red-pale); }
.button-small { min-height: 2rem; padding: .35rem .65rem; font-size: .77rem; }
.button-full { width: 100%; }
.text-button { width: fit-content; padding: 0; border: 0; background: none; color: var(--teal); font-size: .78rem; font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.icon-button { display: grid; place-items: center; width: 2rem; height: 2rem; padding: 0; border: 0; background: transparent; color: var(--muted); font-size: 1.6rem; line-height: 1; border-radius: 5px; }
.icon-button:hover { background: var(--canvas); color: var(--ink); }

.panel { padding: 1.5rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.panel-heading h2 { margin: 0; font-size: 1.16rem; letter-spacing: -.015em; line-height: 1.25; }
.panel .muted { margin: 0 0 1rem; font-size: .86rem; }
.summary-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; margin-bottom: 1.25rem; }
.summary-tile { display: flex; flex-direction: column; min-height: 8.4rem; padding: 1.25rem 1.4rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.summary-label { color: var(--muted); font-size: .81rem; font-weight: 650; }
.summary-value { margin-top: .4rem; font-size: clamp(1.45rem, 2.8vw, 2.05rem); line-height: 1.25; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.summary-note { margin-top: auto; padding-top: .5rem; color: var(--muted); font-size: .75rem; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(290px, 1fr); gap: 1.25rem; align-items: start; }
.main-column, .side-column { min-width: 0; }
.side-column { display: grid; gap: 1.25rem; }

.assignment-list { display: grid; gap: .75rem; }
.assignment-card { padding: 1rem; border: 1px solid var(--line); border-radius: 8px; }
.assignment-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.assignment-name { font-weight: 750; font-size: 1rem; margin: 0; }
.assignment-period { color: var(--muted); font-size: .75rem; margin: .1rem 0 0; }
.usage-numbers { display: flex; align-items: baseline; gap: .4rem; margin: 1rem 0 .55rem; }
.usage-numbers strong { font-size: 1.5rem; line-height: 1.2; font-variant-numeric: tabular-nums; letter-spacing: -.025em; }
.usage-numbers span { color: var(--muted); font-size: .81rem; }
.progress-track { display: block; width: 100%; height: .5rem; overflow: hidden; border: 0; background: #eaf0f4; border-radius: 999px; appearance: none; }
.progress-track::-webkit-progress-bar { background: #eaf0f4; border-radius: 999px; }
.progress-track::-webkit-progress-value { background: var(--teal); border-radius: 999px; }
.progress-track::-moz-progress-bar { background: var(--teal); border-radius: 999px; }
.progress-track.warning::-webkit-progress-value { background: #c58723; }
.progress-track.warning::-moz-progress-bar { background: #c58723; }
.progress-track.danger::-webkit-progress-value { background: var(--red); }
.progress-track.danger::-moz-progress-bar { background: var(--red); }
.usage-breakdown { display: flex; flex-wrap: wrap; gap: .2rem 1rem; margin-top: .8rem; color: var(--ink-soft); font-size: .78rem; font-variant-numeric: tabular-nums; }
.usage-breakdown strong { color: var(--ink); }
.loading-placeholder, .empty-state { padding: 2rem 1rem; color: var(--muted); text-align: center; background: var(--canvas); border: 1px dashed var(--line-strong); border-radius: 7px; font-size: .86rem; }
.subscription-field { margin-top: 1rem; }
.feedback { min-height: 1.1rem; margin: .4rem 0 0; color: var(--teal); font-size: .77rem; }

.field { display: grid; gap: .4rem; }
.field label { color: var(--ink-soft); font-size: .8rem; font-weight: 700; }
.field input, .field select, .field textarea, .filter-row input { width: 100%; min-width: 0; min-height: 2.6rem; padding: .55rem .72rem; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--ink); background: #fff; outline: none; }
.field input:focus, .field select:focus, .field textarea:focus, .filter-row input:focus { border-color: var(--teal); box-shadow: 0 0 0 3px #157a8026; }
.field textarea { resize: vertical; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .77rem; line-height: 1.5; }
.field input[readonly] { background: var(--canvas); color: var(--ink-soft); }
.field-hint { margin: -.1rem 0 0; color: var(--muted); font-size: .73rem; }
.form-stack { display: grid; gap: 1rem; }
.form-message { padding: .7rem .8rem; border-radius: 6px; background: var(--teal-pale); color: #17615d; font-size: .82rem; }
.form-message.error { background: var(--red-pale); color: var(--red); }
.checkbox-field label { display: inline-flex; align-items: center; gap: .5rem; font-size: .86rem; }
.checkbox-field input { width: 1rem; height: 1rem; accent-color: var(--teal); }

.admin-stats { display: flex; flex-wrap: wrap; gap: 1.5rem; padding: .9rem 1.25rem; margin-bottom: 1.25rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.admin-stats div { display: flex; align-items: baseline; gap: .55rem; }
.admin-stats span { color: var(--muted); font-size: .78rem; }
.admin-stats strong { font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.admin-layout { display: grid; grid-template-columns: minmax(0, 1.85fr) minmax(235px, .75fr); align-items: start; gap: 1.25rem; }
.filter-row { margin-bottom: .85rem; }
.filter-row input { max-width: 21rem; font-size: .83rem; }
.users-list { display: grid; gap: .75rem; }
.user-row { padding: 1rem; border: 1px solid var(--line); border-radius: 8px; }
.user-row-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.user-identity { display: flex; align-items: center; gap: .7rem; min-width: 0; }
.user-avatar { display: grid; place-items: center; flex: none; width: 2.1rem; height: 2.1rem; border-radius: 7px; background: var(--blue-pale); color: var(--navy); font-size: .82rem; font-weight: 750; }
.user-title { margin: 0; font-size: .9rem; font-weight: 750; overflow-wrap: anywhere; }
.user-subtitle { margin: .1rem 0 0; color: var(--muted); font-size: .73rem; }
.user-actions, .assignment-actions { display: flex; flex-wrap: wrap; gap: .35rem; justify-content: flex-end; }
.user-meta { display: flex; flex-wrap: wrap; gap: .35rem 1.25rem; margin: .8rem 0 .7rem; font-size: .76rem; color: var(--ink-soft); }
.user-meta strong { color: var(--ink); font-weight: 650; }
.admin-assignments { display: grid; gap: .35rem; }
.admin-assignment { display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .45rem .6rem; background: var(--canvas); border-radius: 5px; }
.admin-assignment-main { min-width: 0; color: var(--ink-soft); font-size: .74rem; }
.admin-assignment-main strong { color: var(--ink); }
.admin-assignment-main small { display: block; color: var(--muted); font-size: .69rem; }
.admin-empty-assignment { color: var(--muted); font-size: .76rem; }
.link-action { padding: .2rem .3rem; border: 0; background: transparent; color: var(--navy); font-size: .72rem; font-weight: 700; text-decoration: underline; text-underline-offset: 2px; }
.link-action.danger { color: var(--red); }
.nodes-list { display: grid; gap: .65rem; }
.node-item { padding: .7rem .8rem; border: 1px solid var(--line); border-radius: 7px; }
.node-name { display: flex; align-items: center; gap: .5rem; font-size: .87rem; font-weight: 750; }
.node-dot { width: .43rem; height: .43rem; border-radius: 50%; background: var(--teal); }
.node-dot.off { background: var(--muted); }
.node-hostname { display: block; margin-top: .15rem; color: var(--muted); font-size: .72rem; overflow-wrap: anywhere; }
.node-state { display: block; margin-top: .15rem; color: var(--muted); font-size: .7rem; }
.node-actions { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .45rem; }
.node-profiles { display: grid; gap: .3rem; margin-top: .6rem; padding-top: .55rem; border-top: 1px solid var(--line); }
.node-profile { display: flex; align-items: flex-start; justify-content: space-between; gap: .3rem; padding: .25rem 0; }
.node-profile-name { min-width: 0; font-size: .72rem; overflow-wrap: anywhere; }
.node-profile-name small { display: block; color: var(--muted); font-size: .65rem; }
.panel-footnote { margin: 1rem 0 0 !important; padding-top: .85rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .73rem !important; }
.pagination { display: flex; align-items: center; justify-content: flex-end; gap: .7rem; margin-top: 1rem; color: var(--muted); font-size: .77rem; }

.dialog { width: min(100% - 1.5rem, 490px); max-height: min(90vh, 800px); padding: 0; border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); background: var(--surface); box-shadow: 0 20px 60px #10283e29; overflow-y: auto; }
#profile-dialog { width: min(100% - 1.5rem, 620px); }
.dialog::backdrop { background: #09243891; }
.dialog-body { padding: 1.35rem; }
.dialog-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.dialog-heading h2 { margin: 0; font-size: 1.15rem; }
.dialog .muted { margin: 0; font-size: .82rem; }
.dialog-actions { display: flex; justify-content: flex-end; gap: .5rem; padding-top: .35rem; }
.form-columns { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }

.login-page { background: #fff; }
.login-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr); min-height: 100vh; }
.login-intro { display: flex; flex-direction: column; justify-content: space-between; padding: clamp(2rem, 5vw, 5rem); color: #fff; background: var(--navy); position: relative; overflow: hidden; }
.login-intro::after { content: ""; position: absolute; width: 70vw; height: 70vw; max-width: 850px; max-height: 850px; left: -38vw; bottom: -38vw; border: 1px solid #ffffff24; border-radius: 50%; box-shadow: 0 0 0 85px #ffffff09, 0 0 0 180px #ffffff07; pointer-events: none; }
.login-intro > * { position: relative; z-index: 1; }
.login-intro-copy { max-width: 32rem; }
.login-intro-copy h1 { margin: 0 0 1.25rem; font-size: clamp(2.5rem, 4.5vw, 4.5rem); line-height: 1.15; letter-spacing: -.055em; }
.login-intro-copy > p:last-child { margin: 0; max-width: 26rem; color: #c4dce7; line-height: 1.8; font-size: .95rem; }
.login-intro-foot { color: #92b9c8; font-size: .75rem; letter-spacing: .08em; }
.login-panel { display: grid; place-items: center; padding: 2rem; }
.login-card { width: min(100%, 370px); }
.login-card h2 { margin: 0 0 .4rem; font-size: 1.8rem; letter-spacing: -.03em; }
.login-card > .muted { margin: 0 0 2rem; font-size: .86rem; }
.login-card .button { margin-top: .5rem; }
.login-help { margin-top: 1.5rem; color: var(--muted); text-align: center; font-size: .77rem; }

@media (max-width: 950px) {
  .content-grid, .admin-layout { grid-template-columns: 1fr; }
  .nodes-list { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}
@media (max-width: 680px) {
  .container { width: min(100% - 1.5rem, 1180px); }
  .page-content { padding-block: 1.5rem 3rem; }
  .page-heading { flex-direction: column; gap: .7rem; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .summary-tile { min-height: 7.2rem; padding: 1rem; }
  .summary-tile:first-child { grid-column: 1 / -1; min-height: 6.5rem; }
  .summary-value { font-size: 1.5rem; }
  .panel { padding: 1.1rem; }
  .header-inner { min-height: 4rem; }
  .brand { font-size: .86rem; }
  .nav-link { padding: .45rem .42rem; font-size: .75rem; }
  .login-layout { grid-template-columns: 1fr; }
  .login-intro { min-height: 14rem; padding: 1.5rem; }
  .login-intro-copy h1 { font-size: 2rem; margin-bottom: .5rem; }
  .login-intro-copy > p:last-child, .login-intro-foot { display: none; }
  .login-panel { padding: 2.3rem 1.5rem; align-items: start; }
  .user-row-top { flex-direction: column; }
  .user-actions { justify-content: flex-start; }
}
@media (max-width: 390px) {
  .brand span:last-child { display: none; }
  .heading-actions { width: 100%; }
  .heading-actions .button { flex: 1; }
  .form-columns { grid-template-columns: 1fr; }
  .admin-assignment { align-items: flex-start; flex-direction: column; }
}