:root {
  --md-sys-color-primary: #405f91;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d6e3ff;
  --md-sys-color-surface: #f9f9ff;
  --md-sys-color-surface-container: #ededf4;
  --md-sys-color-surface-container-high: #e7e8ef;
  --md-sys-color-on-surface: #1a1b20;
  --md-sys-color-on-surface-variant: #44474e;
  --md-sys-color-outline: #74777f;
  --md-sys-color-error: #ba1a1a;
  --status-up: #2e7d32;
  --status-degraded: #a94f00;
  --status-down: #ba1a1a;
  --status-unknown: #616161;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --radius-card: 16px;
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
body { margin: 0; color: var(--md-sys-color-on-surface); background: var(--md-sys-color-surface); }
a { color: var(--md-sys-color-primary); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .language-dropdown summary:focus-visible { outline: 3px solid #8cabdf; outline-offset: 2px; }
.app-shell { min-height: 100vh; background: var(--md-sys-color-surface); }
.top-bar { min-height: 64px; display: flex; align-items: center; gap: var(--space-6); padding: var(--space-3) clamp(1rem, 4vw, 3rem); background: var(--md-sys-color-surface-container); }
.top-bar nav { display: flex; flex: 1; gap: var(--space-4); }
.top-bar nav a, .brand { color: var(--md-sys-color-on-surface); font-weight: 600; text-decoration: none; }
.brand { font-size: 1.15rem; }
.top-bar form { margin: 0; }
.language-selector { display: flex; align-items: center; gap: var(--space-2); font-size: .875rem; font-weight: 600; }
.language-dropdown { position: relative; width: 150px; font-weight: 400; }
.language-dropdown summary { display: grid; grid-template-columns: 1fr 20px 12px; align-items: center; gap: var(--space-2); min-height: 40px; padding: .5rem .55rem .5rem .75rem; border: 1px solid var(--md-sys-color-outline); border-radius: 8px; background: #fff; cursor: pointer; list-style: none; }
.language-dropdown summary::-webkit-details-marker { display: none; }
.language-dropdown summary::after { content: "▾"; color: var(--md-sys-color-on-surface-variant); }
.language-dropdown[open] summary::after { content: "▴"; }
.language-dropdown img { width: 20px; height: 12px; border: 1px solid rgb(0 0 0 / 22%); object-fit: cover; }
.language-options { position: absolute; z-index: 10; top: calc(100% + 2px); left: 0; width: 100%; padding: 2px; border: 1px solid var(--md-sys-color-outline); border-radius: 4px; background: #fff; box-shadow: 0 4px 10px rgb(0 0 0 / 16%); }
.language-options button { display: grid; grid-template-columns: 1fr 20px; align-items: center; gap: var(--space-2); width: 100%; padding: .45rem .55rem; border-radius: 2px; color: var(--md-sys-color-on-surface); background: transparent; font-weight: 400; text-align: left; }
.language-options button:hover, .language-options button[aria-current="true"] { color: var(--md-sys-color-on-primary); background: var(--md-sys-color-primary); }
.page-container { width: min(1200px, calc(100% - 2rem)); margin: 0 auto; padding: var(--space-8) 0 4rem; }
.page-heading, .section-heading { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); margin-bottom: var(--space-4); }
h1, h2, p { margin-top: 0; } h1 { margin-bottom: var(--space-2); } h2 { font-size: 1.25rem; }
.card { background: var(--md-sys-color-surface-container); border-radius: var(--radius-card); padding: var(--space-6); margin-bottom: var(--space-4); }
.dashboard-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; margin-bottom: var(--space-4); }
.metric-card { display: flex; flex-direction: column; gap: var(--space-2); margin: 0; }
.metric-card strong { font-size: 2rem; }
.response-chart { width: 100%; height: 360px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .8rem; text-align: left; border-bottom: 1px solid #c5c6cd; vertical-align: top; }
th { color: var(--md-sys-color-on-surface-variant); font-size: .85rem; }
.url-cell { max-width: 24rem; overflow-wrap: anywhere; }
button, .button { border: 0; border-radius: 999px; padding: .7rem 1.2rem; background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; display: inline-block; }
button:hover, .button:hover { filter: brightness(.92); }
.button.secondary { color: var(--md-sys-color-primary); background: var(--md-sys-color-primary-container); }
.text-button, .link-button { color: var(--md-sys-color-primary); background: transparent; padding: .35rem; }
.link-button.danger { color: var(--md-sys-color-error); }
.actions, .form-actions, .inline-form, .pagination { display: flex; align-items: center; gap: var(--space-3); }
.actions form { display: inline; }
.status-chip { display: inline-flex; align-items: center; gap: .35rem; border: 1px solid var(--md-sys-color-outline); border-radius: 999px; padding: .25rem .55rem; font-size: .8rem; font-weight: 700; }
.status-up { color: var(--status-up); }.status-down { color: var(--status-down); }.status-warning { color: var(--status-degraded); }.status-unknown { color: var(--status-unknown); }
.customer-tree { display: flex; flex-direction: column; gap: var(--space-3); }
.customer-list-header, .customer-summary { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: var(--space-4); }
.customer-list-header { padding: 0 var(--space-6); color: var(--md-sys-color-on-surface-variant); font-size: .85rem; font-weight: 700; }
.customer-folder { padding: 0; margin: 0; overflow: hidden; }
.customer-summary { padding: var(--space-4) var(--space-6); cursor: pointer; font-weight: 700; list-style: none; }
.customer-summary::-webkit-details-marker { display: none; }
.customer-summary:hover { background: var(--md-sys-color-surface-container-high); }
.customer-name { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.folder-icon { color: var(--md-sys-color-primary); transition: transform .15s ease; }
.customer-folder[open] .folder-icon { transform: rotate(90deg); }
.customer-folder-body { border-top: 1px solid #c5c6cd; padding: var(--space-4) var(--space-6) var(--space-6); }
.customer-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-4); }
.customer-actions form { margin: 0; }
.tree-services { border-left: 3px solid var(--md-sys-color-primary-container); padding-left: var(--space-3); }
.form-card { max-width: 760px; }
.form-stack { display: flex; flex-direction: column; gap: var(--space-4); }
.form-stack.compact { margin-top: var(--space-4); }
.form-grid { display: grid; gap: var(--space-4); }
label { display: flex; flex-direction: column; gap: var(--space-2); font-weight: 600; color: var(--md-sys-color-on-surface-variant); }
input, select, textarea { width: 100%; border: 1px solid var(--md-sys-color-outline); border-radius: 8px; padding: .75rem; background: #fff; color: var(--md-sys-color-on-surface); font: inherit; }
textarea { resize: vertical; }
.field-help { margin: calc(-1 * var(--space-2)) 0 0; color: var(--md-sys-color-on-surface-variant); font-size: .875rem; }
.character-count { align-self: flex-end; }
.auth-card { max-width: 420px; margin: 8vh auto; }
.message.error { padding: var(--space-4); border-left: 4px solid var(--md-sys-color-error); background: #ffdad6; margin-bottom: var(--space-4); }
.detail-grid { display: grid; gap: var(--space-4); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: var(--space-2) var(--space-4); } dt { font-weight: 700; } dd { margin: 0; overflow-wrap: anywhere; }
.timeline { list-style: none; padding: 0; border-left: 2px solid var(--md-sys-color-outline); margin-left: .5rem; }
.timeline li { position: relative; padding: 0 0 var(--space-6) var(--space-6); }
.timeline li::before { content: ""; position: absolute; width: .75rem; height: .75rem; border-radius: 50%; background: var(--md-sys-color-primary); left: -.44rem; top: .25rem; }
.timeline time, .comment time { color: var(--md-sys-color-on-surface-variant); font-size: .85rem; }
.comment { border-bottom: 1px solid #c5c6cd; padding: var(--space-3) 0; }.comment time { margin-left: var(--space-2); }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-weight: 700; color: var(--md-sys-color-primary); }
.pagination { justify-content: center; margin-top: var(--space-4); }
.empty-state { text-align: center; }
@media (min-width: 600px) { .dashboard-grid { grid-template-columns: repeat(2, 1fr); } .form-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 840px) { .dashboard-grid { grid-template-columns: repeat(4, 1fr); } .detail-grid { grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr); } }
@media (max-width: 650px) { .top-bar { align-items: flex-start; flex-wrap: wrap; }.top-bar nav { order: 3; flex-basis: 100%; }.page-heading, .section-heading { align-items: flex-start; flex-direction: column; } }