:root,
html[data-theme="light"] {
  color-scheme: light;
  --black: #fff;
  --ground: #f3f4f7;
  --surface: rgba(255, 255, 255, .9);
  --surface-raised: #f5f6f9;
  --surface-active: #eceef4;
  --ink: #17181d;
  --muted: #747984;
  --muted-strong: #484d57;
  --line: rgba(20, 24, 35, .1);
  --line-strong: rgba(20, 24, 35, .17);
  --primary: #5b6cff;
  --primary-hover: #7684ff;
  --primary-soft: rgba(91, 108, 255, .11);
  --green: #1fa778;
  --green-soft: rgba(31, 167, 120, .1);
  --amber: #d58b2a;
  --amber-soft: rgba(213, 139, 42, .11);
  --red: #df5368;
  --red-soft: rgba(223, 83, 104, .1);
  --glass: rgba(255, 255, 255, .82);
  --shadow: 0 18px 48px rgba(20, 24, 35, .08);
  --font: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --black: #101114;
  --ground: #070809;
  --surface: rgba(22, 23, 26, .9);
  --surface-raised: #1c1e22;
  --surface-active: #24262b;
  --ink: #f2f3f5;
  --muted: #969ba5;
  --muted-strong: #c9cdd4;
  --line: rgba(255, 255, 255, .09);
  --line-strong: rgba(255, 255, 255, .16);
  --primary: #8490ff;
  --primary-hover: #9da6ff;
  --primary-soft: rgba(132, 144, 255, .14);
  --green: #35c994;
  --green-soft: rgba(53, 201, 148, .1);
  --amber: #efb156;
  --amber-soft: rgba(239, 177, 86, .11);
  --red: #f36d7f;
  --red-soft: rgba(243, 109, 127, .11);
  --glass: rgba(17, 18, 21, .84);
  --shadow: 0 24px 64px rgba(0, 0, 0, .34);
}

html {
  background: var(--ground);
  transition: color .22s ease, background-color .22s ease;
}

body {
  background:
    radial-gradient(circle at 78% -12%, rgba(91, 108, 255, .1), transparent 33%),
    radial-gradient(circle at 4% 96%, rgba(30, 194, 174, .06), transparent 30%),
    var(--ground);
  color: var(--ink);
  letter-spacing: -.005em;
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 78% -12%, rgba(118, 89, 255, .14), transparent 35%),
    radial-gradient(circle at 4% 96%, rgba(30, 194, 174, .07), transparent 30%),
    linear-gradient(145deg, #0d0e10, #070809 56%, #030304);
}

::selection { color: #fff; background: var(--primary); }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { border: 2px solid transparent; border-radius: 999px; background: color-mix(in srgb, var(--muted) 58%, transparent); background-clip: padding-box; }

.eyebrow,
.section-index {
  color: var(--primary);
  font-weight: 750;
}

.theme-toggle {
  min-height: 38px;
  margin-left: auto;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 7px 20px rgba(20, 24, 35, .05);
}

.theme-toggle:hover { border-color: color-mix(in srgb, var(--primary) 50%, var(--line)); background: var(--primary-soft); }
.theme-toggle.compact { margin-left: 0; box-shadow: none; }
.theme-icon { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
html[data-theme="light"] .theme-icon-sun,
html[data-theme="dark"] .theme-icon-moon { display: none; }

/* Login */
.login-layout {
  grid-template-columns: minmax(0, 1.28fr) minmax(410px, .72fr);
  background: transparent;
}

.login-brand {
  padding: clamp(32px, 4.5vw, 72px);
  border-right-color: var(--line);
  background:
    radial-gradient(circle at 20% 16%, rgba(42, 206, 194, .16), transparent 27%),
    radial-gradient(circle at 80% 40%, rgba(111, 84, 242, .22), transparent 34%),
    linear-gradient(140deg, color-mix(in srgb, var(--black) 92%, #171a24), var(--black));
}

.brand-mark {
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 15px;
  background: linear-gradient(135deg, #6077ff, #7b58df);
  color: #fff;
  box-shadow: 0 12px 30px rgba(91, 108, 255, .25);
}

.brand-mark.small { border-color: color-mix(in srgb, var(--primary) 38%, var(--line)); background: var(--primary-soft); color: var(--primary); box-shadow: none; }
.login-brand-head { position: relative; z-index: 2; }
.login-brand h1 { font-size: clamp(54px, 6vw, 94px); font-weight: 760; line-height: .92; }
.login-brand h1 span { color: transparent; background: linear-gradient(90deg, #7186ff, #9d64ea 55%, #41cfc2); -webkit-background-clip: text; background-clip: text; }
.login-intro { color: var(--muted-strong); }
.boundary-list { border-top-color: var(--line-strong); }
.login-panel { background: color-mix(in srgb, var(--ground) 84%, transparent); backdrop-filter: blur(24px); }
.login-card { border-color: var(--line); border-radius: 24px; background: var(--glass); box-shadow: var(--shadow); backdrop-filter: blur(26px); }
.login-card-status i { border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.form-title { border-top-color: color-mix(in srgb, var(--primary) 48%, var(--line)); }
.login-role-switch { margin: 18px 0 0; padding: 4px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-raised); }
.login-role-switch button { min-height: 36px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-weight: 700; }
.login-role-switch button.active { background: var(--surface); color: var(--primary); box-shadow: 0 5px 16px rgba(20, 24, 35, .08); }
.login-secondary-actions { margin-top: 16px; display: flex; justify-content: center; gap: 22px; }
.login-secondary-actions .link-button { font-size: 11px; }

/* Controls */
input,
textarea,
select {
  min-height: 42px;
  border-color: var(--line);
  border-radius: 11px;
  background: color-mix(in srgb, var(--black) 86%, var(--ground));
  color: var(--ink);
  transition: border-color .16s ease, box-shadow .16s ease, background-color .16s ease;
}

input::placeholder,
textarea::placeholder { color: color-mix(in srgb, var(--muted) 72%, transparent); }
input:hover,
textarea:hover,
select:hover { border-color: color-mix(in srgb, var(--primary) 42%, var(--line)); }
input:focus,
textarea:focus,
select:focus { border-color: var(--primary); background: var(--black); box-shadow: 0 0 0 4px var(--primary-soft); }

.button {
  min-height: 39px;
  border-radius: 11px;
  transition: transform .16s ease, background-color .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.button:not(:disabled):hover { transform: translateY(-1px); }
.button.primary { border-color: rgba(113, 113, 255, .7); background: linear-gradient(135deg, #6077ff, #7b58df); color: #fff; box-shadow: 0 9px 24px rgba(91, 108, 255, .2); }
.button.primary:hover { border-color: #8190ff; background: linear-gradient(135deg, #7085ff, #8967e9); color: #fff; }
.button.quiet { border-color: var(--line); background: var(--surface); color: var(--ink); box-shadow: none; }
.button.quiet:hover { border-color: color-mix(in srgb, var(--primary) 40%, var(--line)); background: var(--primary-soft); }
.button.danger { border-color: var(--red); background: linear-gradient(135deg, #df5368, #c94760); }
.link-button { border-bottom: 0; color: var(--primary); }

/* Application shell */
.app-layout { grid-template-columns: 264px minmax(0, 1fr); background: transparent; }
.sidebar { border-right-color: var(--line); background: var(--glass); box-shadow: 8px 0 32px rgba(20, 24, 35, .035); backdrop-filter: blur(24px); }
.sidebar-brand { min-height: 76px; border-bottom-color: var(--line); }
.main-nav { gap: 3px; padding: 12px 9px 20px; }
.main-nav button { min-height: 43px; grid-template-columns: 30px 1fr; border-left: 0; border-radius: 12px; color: var(--muted); }
.main-nav button span { color: color-mix(in srgb, var(--muted) 62%, transparent); }
.main-nav button:hover { background: var(--surface-active); color: var(--ink); }
.main-nav button.active { position: relative; border-left: 0; background: linear-gradient(90deg, var(--primary-soft), color-mix(in srgb, var(--primary-soft) 25%, transparent)); color: var(--primary); }
.main-nav button.active::before { position: absolute; top: 11px; bottom: 11px; left: 0; width: 3px; border-radius: 0 4px 4px 0; background: linear-gradient(180deg, var(--primary), #35c9b7); content: ""; }
.main-nav button.active span { color: var(--primary); }
.sidebar-foot { border-top-color: var(--line); }
.role-badge { border-color: var(--line); border-radius: 999px; background: var(--surface-raised); }

.workspace { background: transparent; }
.workspace-header { min-height: 76px; border-bottom-color: var(--line); background: var(--glass); backdrop-filter: blur(24px); }
.workspace-header h1 { font-size: 25px; }
.header-meta { gap: 10px; }
.system-chip { padding: 7px 10px; border-radius: 999px; background: var(--green-soft); }
.system-chip i,
.health-band-head i { box-shadow: 0 0 0 4px var(--green-soft); }
.panel { max-width: 1760px; margin-inline: auto; padding-top: 22px; }
.panel-head { min-height: 72px; margin-bottom: 16px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 20px; background: radial-gradient(circle at 94% 0, rgba(119, 90, 236, .14), transparent 32%), var(--surface); box-shadow: var(--shadow); backdrop-filter: blur(20px); }
.panel-head h2 { font-size: 24px; }

/* Content surfaces */
.health-band-head { border-color: var(--line); border-radius: 16px 16px 0 0; background: var(--surface); }
.metric-grid { gap: 12px; border: 0; border-top: 0; background: transparent; }
.metric { min-height: 148px; border: 1px solid var(--line); border-radius: 17px; background: var(--surface); box-shadow: 0 12px 34px rgba(20, 24, 35, .045); }
.metric:last-child { border-right: 1px solid var(--line); }
.metric:hover { border-color: color-mix(in srgb, var(--primary) 34%, var(--line)); background: var(--surface-raised); }
.metric strong { font-size: clamp(36px, 4vw, 58px); }
.metric:first-child strong { color: var(--primary); }

.account-access-card { margin-bottom: 16px; }
.inline-account-form { padding: 20px 22px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px; align-items: end; border-bottom: 1px solid var(--line); }
.inline-account-form label { margin: 0; }
.account-grant-list { padding: 10px 22px 18px; display: grid; gap: 8px; }
.account-grant { min-height: 62px; padding: 12px 14px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-raised); }
.account-grant strong, .account-grant span { display: block; }
.account-grant span { margin-top: 5px; color: var(--muted); font-size: 11px; }
.account-grant code { color: var(--primary); }

@media (max-width: 720px) {
  .inline-account-form { grid-template-columns: 1fr; }
  .account-grant { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 820px) {
  .login-layout { grid-template-columns: minmax(0, 1fr); }
  .login-brand { min-height: auto; padding: 18px 20px; }
  .login-brand-head { width: 100%; }
  .login-hero,
  .login-brand .boundary-list { display: none; }
  .login-panel { min-height: calc(100vh - 83px); padding: 18px 14px 30px; }
  .app-layout { display: block; }
}

.section-card,
.table-wrap,
.support-workspace,
.project-card,
.node-card,
.update-board { overflow: hidden; border-color: var(--line); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow); }
.card-head,
.support-conversation-head,
.support-reply { border-color: var(--line); background: color-mix(in srgb, var(--surface) 82%, var(--ground)); }
.activity-row:hover,
.record-row:hover,
tbody tr:hover { background: var(--primary-soft); }

table { border-collapse: separate; border-spacing: 0; }
th,
td { border-color: var(--line); }
th { background: color-mix(in srgb, var(--surface) 72%, var(--ground)); color: var(--muted); text-transform: none; }
td { color: var(--muted-strong); }
td > button:not(.button) { border-bottom: 0; color: var(--primary); }
.tag,
.status { border-radius: 999px; }
.tag-domain { border-color: color-mix(in srgb, var(--primary) 40%, var(--line)); color: var(--primary); }
.tag-ip { border-color: color-mix(in srgb, var(--green) 40%, var(--line)); color: var(--green); }
.row-actions button,
.card-actions button { min-height: 30px; border-color: var(--line); border-radius: 9px; background: var(--surface-raised); }
.row-actions button:hover,
.card-actions button:hover { border-color: var(--primary); color: var(--primary); }
.progress { overflow: hidden; border-radius: 999px; }
.progress::-webkit-progress-value { background: linear-gradient(90deg, var(--primary), #35c9b7); }

.project-card,
.node-card { border-radius: 18px; }
.project-card:hover,
.node-card:hover { border-color: color-mix(in srgb, var(--primary) 38%, var(--line)); background: var(--surface-raised); transform: translateY(-2px); }
.update-board { border-top: 1px solid var(--line); background: radial-gradient(circle at 85% 10%, var(--primary-soft), transparent 36%), var(--surface); }
.boundary-note { border-left-color: var(--primary); border-radius: 0 12px 12px 0; }
.quota-customer-summary,
.quota-increase-card { border-color: var(--line); background: linear-gradient(145deg, color-mix(in srgb, var(--surface-raised) 88%, var(--primary-soft)), var(--surface-raised)); }
.quota-increase-card:focus-within { border-color: color-mix(in srgb, var(--primary) 50%, var(--line)); box-shadow: 0 0 0 3px var(--primary-soft); }
.support-message p { border-radius: 14px; background: var(--surface-raised); }
.support-message.customer p { border-color: color-mix(in srgb, var(--primary) 34%, var(--line)); }

/* Drawers and dialogs */
dialog { overflow: hidden; border-color: var(--line); border-radius: 20px; background: var(--surface); box-shadow: 0 28px 90px rgba(0, 0, 0, .38); backdrop-filter: blur(24px); }
dialog::backdrop { background: rgba(0, 0, 0, .62); backdrop-filter: blur(5px); }
.drawer { border-radius: 20px 0 0 20px; }
.drawer header,
.drawer footer { border-color: var(--line); background: color-mix(in srgb, var(--surface) 84%, var(--ground)); }
.drawer header button { border-color: var(--line); border-radius: 12px; background: var(--surface-raised); }
.secret-value { border-color: color-mix(in srgb, var(--primary) 48%, var(--line)); border-radius: 13px; background: var(--surface-raised); color: var(--primary); }

@media (max-width: 820px) {
  .main-nav { background: var(--glass); backdrop-filter: blur(24px); }
  .main-nav button { border-radius: 0; }
  .main-nav button.active { border-top-color: var(--primary); }
  .theme-toggle.compact span { display: none; }
  .theme-toggle.compact { width: 40px; padding: 0; justify-content: center; }
}

@media (max-width: 620px) {
  .theme-toggle { min-height: 36px; padding-inline: 10px; }
  .login-brand h1 { font-size: clamp(42px, 13vw, 62px); }
  .panel-head { padding: 17px; border-radius: 16px; }
  .metric { border-right: 1px solid var(--line); }
  tbody tr { overflow: hidden; border-color: var(--line); border-radius: 14px; }
  .drawer { border-radius: 0; }
}