:root,
html.light,
.k-theme--light {
  color-scheme: light;
  --surface-bg: #f0f0f0;
  --surface-card: #ffffff;
  --surface-raised: #e8e8e8;
  --surface-border: #cccccc;
  --surface-divider: #dddddd;
  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-disabled: #737373;
  --text-on-volt: #050505;
  --color-volt: #72b300;
  --color-error: #d93025;
  --color-success: #008f5a;
  --color-info: #0052cc;
  --color-warning: #e68a00;
  --font-display: "Syne", sans-serif;
  --font-ui: "Manrope", sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --radius-sm: 4px;
  --radius-md: 6px;
  --shadow-card: 0 2px 8px rgb(0 0 0 / 6%);
  --color-bg-base: var(--surface-bg);
  --color-bg-surface: var(--surface-card);
  --color-bg-input: var(--surface-card);
  --color-text-primary: var(--text-primary);
  --color-text-secondary: var(--text-secondary);
  --color-action-fill: var(--color-volt);
  --color-action-text: var(--text-on-volt);
  --color-focus-ring: var(--color-volt);
}

html.dark,
.k-theme--dark {
  color-scheme: dark;
  --surface-bg: #050505;
  --surface-card: #141414;
  --surface-raised: #1c1c1c;
  --surface-border: #363636;
  --surface-divider: #292929;
  --text-primary: #e1e1e1;
  --text-secondary: #999999;
  --text-disabled: #888888;
  --color-error: #ff4d00;
  --color-success: #00e08f;
  --color-info: #2e9aff;
  --color-warning: #ffb800;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--surface-bg); color: var(--text-primary); font-family: var(--font-ui); font-variant-numeric: tabular-nums; }
body { min-height: 100vh; }
a { color: inherit; text-underline-offset: 0.2em; }
button, input, select, textarea { font: inherit; letter-spacing: 0; }
button, a, input, select, textarea, summary { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--color-volt); color: var(--text-on-volt); }
:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
.k-table-wrap:focus-visible { outline-offset: -2px; }
* { scrollbar-color: var(--surface-border) var(--surface-bg); scrollbar-width: thin; }
.k-brand-title { font-family: var(--font-display); letter-spacing: 0; }
.k-page-header__title, .heading-ui-page { font: 700 1.75rem/1.2 var(--font-ui); letter-spacing: 0; }
.heading-ui-section { font: 700 1.25rem/1.3 var(--font-ui); }
.k-panel__title, .heading-ui-panel { font: 600 1rem/1.4 var(--font-ui); letter-spacing: 0; }
.k-panel { min-width: 0; background: var(--surface-card); border-block: 1px solid var(--surface-border); }
.k-panel__header { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); padding: var(--space-5) var(--space-5) 0; }
.k-panel__title { margin: 0; }
.k-panel__subtitle { margin: var(--space-2) 0 0; color: var(--text-secondary); font-size: 0.875rem; line-height: 1.5; }
.k-panel__body { padding: var(--space-5); }
.k-page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); }
.k-page-header__title { margin: 0; }
.k-page-header__description { margin: var(--space-3) 0 0; max-width: 65ch; color: var(--text-secondary); line-height: 1.5; }
.k-page-header__actions, .k-form-actions { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.k-filter-bar { display: grid; gap: var(--space-4); padding-block: var(--space-4); border-bottom: 1px solid var(--surface-divider); margin-bottom: var(--space-4); }
.k-button, .k-link-button {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; min-width: 44px; max-width: 100%; padding: 0.65rem 0.9rem;
  border: 1px solid var(--surface-border); border-radius: var(--radius-sm);
  background: var(--surface-card); color: var(--text-primary); font-size: 0.875rem; font-weight: 600;
  text-align: center; text-decoration: none; cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease;
}
.k-button:hover:not(:disabled), .k-link-button:hover { background: var(--surface-raised); border-color: var(--text-secondary); }
.k-button--primary { background: var(--color-volt); border-color: var(--color-volt); color: var(--text-on-volt); }
.k-button--primary:hover:not(:disabled) { background: var(--color-volt); border-color: var(--text-primary); }
.k-button--primary:focus-visible { outline-color: var(--text-primary); box-shadow: 0 0 0 4px var(--color-volt); }
.k-button--destructive { color: var(--text-primary); border-color: var(--color-error); }
.k-button--destructive .k-icon { color: var(--color-error); }
.k-button--ghost { background: transparent; border-color: transparent; }
.k-button--icon { width: 44px; height: 44px; padding: 0; flex: 0 0 44px; }
.k-button:disabled, .k-link-button[aria-disabled="true"] { background: var(--surface-raised); border-color: var(--surface-border); color: var(--text-disabled); cursor: not-allowed; }
.k-button[aria-busy="true"] { cursor: progress; }
.k-input, .k-select {
  display: block; width: 100%; min-width: 0; min-height: 44px; padding: 0.65rem 0.75rem;
  border: 1px solid var(--surface-border); border-radius: var(--radius-sm); background: var(--surface-card); color: var(--text-primary);
  font-size: 0.875rem; caret-color: var(--text-primary); transition: border-color 150ms ease;
}
.k-input::placeholder { color: var(--text-secondary); opacity: 1; }
.k-input:hover:not(:disabled), .k-select:hover:not(:disabled) { border-color: var(--text-secondary); }
.k-input:focus, .k-select:focus { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; border-color: var(--text-primary); }
.k-input:disabled, .k-select:disabled { background: var(--surface-raised); color: var(--text-disabled); cursor: not-allowed; }
.k-input[readonly] { background: var(--surface-bg); }
textarea.k-input { resize: vertical; min-height: 96px; }
.k-input.invalid, .k-select.invalid, .k-input[aria-invalid="true"] { border-color: var(--color-error); }
.k-field { display: grid; gap: var(--space-2); min-width: 0; align-content: start; }
.k-field label { color: var(--text-primary); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0; text-transform: none; line-height: 1.5; }
.k-field__hint { color: var(--text-secondary); font-size: 0.8125rem; line-height: 1.5; }
.k-field__error, .validation-message { color: var(--text-primary); font-size: 0.8125rem; }
.k-field__error { padding-left: var(--space-2); border-left: 1px solid var(--color-error); }
.k-checkbox { width: 20px; height: 20px; margin: 0; accent-color: var(--color-volt); flex: 0 0 20px; }
label:has(> .k-checkbox) { display: inline-flex; align-items: center; gap: var(--space-3); min-height: 44px; font-size: 0.875rem; cursor: pointer; }
label:has(> .k-checkbox:disabled) { color: var(--text-disabled); cursor: not-allowed; }
.k-table-wrap { overflow: auto; max-width: 100%; }
.k-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.k-table th, .k-table td { border-bottom: 1px solid var(--surface-divider); padding: 0.75rem; text-align: left; vertical-align: top; }
.k-table th { background: var(--surface-bg); color: var(--text-secondary); font-size: 0.8125rem; font-weight: 600; }
.k-table td { max-width: 32rem; overflow-wrap: anywhere; }
.k-table tbody tr:hover { background: var(--surface-raised); }
.k-table__row--interactive { cursor: pointer; }
.k-table tbody tr.k-table__row--selected { background: color-mix(in srgb, var(--color-volt) 12%, var(--surface-card)); }
.k-table td.k-table__numeric, .k-table th.k-table__numeric { text-align: right; white-space: nowrap; }
.k-table .k-input, .k-table .k-select { min-width: 8rem; }
.k-badge { display: inline-flex; align-items: center; gap: var(--space-1); border-radius: var(--radius-sm); padding: 0.25rem 0.5rem; font-size: 0.75rem; font-weight: 600; line-height: 1.5; }
.k-badge--default { background: var(--surface-raised); color: var(--text-primary); }
.k-badge--volt { background: var(--color-volt); color: var(--text-on-volt); }
.k-badge--success, .k-badge--warning, .k-badge--error, .k-badge--info { color: var(--text-primary); border: 1px solid var(--status-color); background: color-mix(in srgb, var(--status-color) 8%, var(--surface-card)); }
.k-badge--success, .k-alert--success { --status-color: var(--color-success); }
.k-badge--warning, .k-alert--warning { --status-color: var(--color-warning); }
.k-badge--error, .k-alert--error { --status-color: var(--color-error); }
.k-badge--info, .k-alert--info { --status-color: var(--color-info); }
.k-alert { display: flex; align-items: flex-start; gap: var(--space-3); padding: var(--space-4); margin-block: var(--space-3); border: 1px solid var(--surface-border); border-radius: var(--radius-sm); background: var(--surface-card); color: var(--text-primary); font-size: 0.875rem; line-height: 1.5; }
.k-alert > .k-icon { color: var(--status-color); margin-top: 0.1rem; }
.k-alert > div { flex: 1; min-width: 0; }
.k-alert p { margin: 0; }
.k-empty-state { display: grid; justify-items: center; gap: var(--space-3); padding: var(--space-8) var(--space-4); text-align: center; }
.k-empty-state__title { margin: 0; font-size: 1rem; font-weight: 600; }
.k-empty-state__body { margin: 0; max-width: 65ch; color: var(--text-secondary); line-height: 1.5; }
.k-loading { display: flex; align-items: center; gap: var(--space-3); min-height: 80px; padding: var(--space-5); color: var(--text-secondary); font-size: 0.875rem; }
.k-spinner { display: inline-block; width: 18px; height: 18px; flex: 0 0 18px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: k-spin 800ms linear infinite; }
@keyframes k-spin { to { transform: rotate(360deg); } }
.k-icon { display: inline-block; width: 18px; height: 18px; flex: 0 0 18px; background-color: currentColor; mask-size: contain; mask-repeat: no-repeat; mask-position: center; }
.k-icon--search { mask-image: url("icons/search.svg"); }
.k-icon--rotate-ccw { mask-image: url("icons/rotate-ccw.svg"); }
.k-icon--download { mask-image: url("icons/download.svg"); }
.k-icon--plus { mask-image: url("icons/plus.svg"); }
.k-icon--trash-2 { mask-image: url("icons/trash-2.svg"); }
.k-icon--x { mask-image: url("icons/x.svg"); }
.k-icon--check { mask-image: url("icons/check.svg"); }
.k-icon--circle-check { mask-image: url("icons/circle-check.svg"); }
.k-icon--circle-alert { mask-image: url("icons/circle-alert.svg"); }
.k-icon--info { mask-image: url("icons/info.svg"); }
.k-icon--sun { mask-image: url("icons/sun.svg"); }
.k-icon--moon { mask-image: url("icons/moon.svg"); }
.k-icon--chevron-left { mask-image: url("icons/chevron-left.svg"); }
.k-icon--chevron-right { mask-image: url("icons/chevron-right.svg"); }
.k-icon--arrow-up { mask-image: url("icons/arrow-up.svg"); }
.k-icon--arrow-down { mask-image: url("icons/arrow-down.svg"); }
.k-icon--save { mask-image: url("icons/save.svg"); }
.k-icon--log-out { mask-image: url("icons/log-out.svg"); }
.k-disclosure { border-block: 1px solid var(--surface-divider); margin-block: var(--space-4); }
.k-disclosure summary { min-height: 44px; padding: var(--space-3) var(--space-2); font-size: 0.875rem; font-weight: 600; cursor: pointer; }
.k-disclosure__body { padding: var(--space-4) var(--space-2); }
.k-disclosure__body > :first-child { margin-top: 0; }
.k-pagination { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-3); margin-top: var(--space-4); font-size: 0.8125rem; }
.k-dialog { width: min(32rem, calc(100% - 2rem)); max-height: calc(100dvh - 2rem); padding: var(--space-5); border: 1px solid var(--surface-border); border-radius: var(--radius-md); background: var(--surface-card); color: var(--text-primary); box-shadow: 0 16px 48px rgb(0 0 0 / 20%); }
.k-dialog::backdrop { background: rgb(0 0 0 / 55%); }
.k-dialog__header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.k-dialog h2 { margin: 0; font: 600 1.125rem/1.4 var(--font-ui); }
.k-dialog__body { padding-block: var(--space-4); line-height: 1.6; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.k-login-body, .k-login-shell { background: var(--surface-bg); }
.k-login-shell { position: relative; display: grid; min-height: 100vh; place-items: center; padding: var(--space-4); isolation: isolate; }
.k-login-grid-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.k-login-stage { width: min(100%, 28rem); }
.k-login-panel { display: grid; gap: var(--space-5); padding: var(--space-8); border: 1px solid var(--surface-border); border-radius: var(--radius-md); background: var(--surface-card); }
.k-login-panel__header { display: grid; gap: var(--space-2); }
.k-login-panel__eyebrow { margin: 0; color: var(--text-secondary); font-size: 0.875rem; }
.k-login-panel__title { margin: 0; font: 800 2.5rem/1.1 var(--font-display); letter-spacing: 0; }
.k-login-grid { display: grid; gap: var(--space-4); }
.k-login-actions { margin-top: var(--space-2); }
.k-login-submit { width: 100%; }
fieldset { min-width: 0; border: 0; padding: 0; margin: 0; }
legend { margin-bottom: var(--space-4); }
@media (max-width: 720px) {
  .k-page-header, .k-panel__header { align-items: stretch; flex-direction: column; }
  .k-page-header__title { font-size: 1.5rem; }
  .k-panel__body, .k-panel__header { padding-inline: var(--space-4); }
  .k-login-panel { padding: var(--space-5); }
  .k-table { min-width: 36rem; }
  .k-dialog .k-form-actions > * { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}