*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  color-scheme: light;
  background: var(--kkb-canvas);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--kkb-ink);
  background: var(--kkb-canvas);
  font-family: var(--kkb-font-sans);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

button,
input {
  font: inherit;
}

button,
a,
input,
[tabindex] {
  -webkit-tap-highlight-color: color-mix(in srgb, var(--kkb-primary) 18%, var(--kkb-surface));
}

button,
a {
  touch-action: manipulation;
}

a {
  color: var(--kkb-primary-strong);
}

:focus-visible {
  outline: 3px solid var(--kkb-data-accent);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: var(--kkb-radius);
  color: var(--kkb-surface);
  background: var(--kkb-primary-strong);
  font-weight: 750;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.public-header,
.app-header {
  border-bottom: 1px solid var(--kkb-line);
  background: var(--kkb-surface);
}

.public-header__inner,
.app-header__inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--kkb-ink);
  text-decoration: none;
  font-weight: 820;
  letter-spacing: -0.025em;
}

.brand__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: var(--kkb-radius);
  color: var(--kkb-surface);
  background: var(--kkb-primary);
  font-size: 13px;
  letter-spacing: -0.04em;
}

.brand__text {
  display: grid;
  line-height: 1.15;
}

.brand__name {
  font-size: 17px;
}

.brand__sub {
  margin-top: 3px;
  color: var(--kkb-muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.public-header__label {
  color: var(--kkb-muted);
  font-size: 13px;
}

.app-header__actions,
.account {
  display: flex;
  align-items: center;
  gap: 12px;
}

.account__copy {
  display: grid;
  justify-items: end;
  line-height: 1.2;
}

.account__label {
  color: var(--kkb-muted);
  font-size: 11px;
}

.account__name {
  max-width: 220px;
  overflow: hidden;
  font-size: 14px;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-shell {
  width: min(1040px, calc(100% - 40px));
  min-height: calc(100vh - 136px);
  margin: 0 auto;
  padding: 48px 0;
  display: grid;
  place-items: center;
}

.auth-layout {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  overflow: hidden;
  border: 1px solid var(--kkb-line);
  border-radius: calc(var(--kkb-radius) * 2);
  background: var(--kkb-surface);
  box-shadow: 0 20px 52px color-mix(in srgb, var(--kkb-ink) 10%, var(--kkb-surface));
}

.auth-intro {
  padding: clamp(38px, 6vw, 72px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 56px;
  background: color-mix(in srgb, var(--kkb-primary) 8%, var(--kkb-canvas));
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--kkb-primary-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.auth-intro h1,
.workspace-heading h1 {
  margin: 0;
  letter-spacing: -0.04em;
}

.auth-intro h1 {
  max-width: 440px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12;
}

.auth-intro__description {
  max-width: 470px;
  margin: 20px 0 0;
  color: var(--kkb-muted);
  font-size: 16px;
  line-height: 1.75;
}

.security-note {
  margin: 0;
  padding: 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  border: 1px solid color-mix(in srgb, var(--kkb-primary) 24%, var(--kkb-line));
  border-radius: var(--kkb-radius);
  background: var(--kkb-surface);
  color: var(--kkb-muted);
  font-size: 13px;
}

.security-note__icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--kkb-primary-strong);
  background: color-mix(in srgb, var(--kkb-primary) 12%, var(--kkb-surface));
  font-weight: 850;
}

.auth-panel {
  padding: clamp(38px, 6vw, 68px);
  align-self: center;
}

.auth-panel h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.auth-panel__lead {
  margin: 9px 0 28px;
  color: var(--kkb-muted);
  font-size: 14px;
}

.alert {
  margin: 0 0 20px;
  padding: 13px 14px;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  font-size: 13px;
  font-weight: 650;
}

.alert-error {
  border-color: color-mix(in srgb, var(--kkb-danger) 42%, var(--kkb-line));
  color: var(--kkb-danger);
  background: color-mix(in srgb, var(--kkb-danger) 7%, var(--kkb-surface));
}

.field {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

.field label,
.field__label,
.auth-form > label {
  color: var(--kkb-ink);
  font-size: 13px;
  font-weight: 750;
}

.auth-form > label {
  display: block;
  margin-top: 18px;
}

.field input,
.auth-form > input:not([type="hidden"]) {
  min-height: 46px;
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  color: var(--kkb-ink);
  background: var(--kkb-surface);
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.auth-form > input:not([type="hidden"]) {
  margin-top: 8px;
}

.field input:hover,
.auth-form > input:not([type="hidden"]):hover {
  border-color: var(--kkb-muted);
}

.field input:focus,
.auth-form > input:not([type="hidden"]):focus {
  border-color: var(--kkb-data-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--kkb-data-accent) 16%, var(--kkb-surface));
}

.field__hint {
  margin: 0;
  color: var(--kkb-muted);
  font-size: 12px;
}

.button {
  min-height: 42px;
  padding: 9px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  color: var(--kkb-ink);
  background: var(--kkb-surface);
  font-size: 14px;
  font-weight: 750;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.button:hover:not(:disabled) {
  border-color: var(--kkb-muted);
  background: color-mix(in srgb, var(--kkb-canvas) 72%, var(--kkb-surface));
}

.button:active:not(:disabled) {
  transform: translateY(1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.button--primary {
  border-color: var(--kkb-primary);
  color: var(--kkb-surface);
  background: var(--kkb-primary);
}

.button--primary:hover:not(:disabled) {
  border-color: var(--kkb-primary-strong);
  background: var(--kkb-primary-strong);
}

.button--danger {
  border-color: var(--kkb-danger);
  color: var(--kkb-surface);
  background: var(--kkb-danger);
}

.button--danger:hover:not(:disabled) {
  border-color: var(--kkb-danger);
  background: var(--kkb-danger);
}

.button--ghost {
  border-color: var(--kkb-surface);
  background: none;
}

.button--compact {
  min-height: 36px;
  padding: 7px 11px;
  font-size: 13px;
}

.auth-form .button--primary {
  width: 100%;
  min-height: 48px;
  margin-top: 26px;
}

.button__spinner {
  width: 16px;
  height: 16px;
  border: 2px solid color-mix(in srgb, var(--kkb-surface) 48%, var(--kkb-primary));
  border-top-color: var(--kkb-surface);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

.feedback {
  margin: 0 0 20px;
  padding: 13px 14px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  background: var(--kkb-surface);
  font-size: 13px;
}

.feedback--success {
  border-color: color-mix(in srgb, var(--kkb-success) 42%, var(--kkb-line));
  color: var(--kkb-primary-strong);
  background: color-mix(in srgb, var(--kkb-success) 8%, var(--kkb-surface));
}

.feedback--error,
.feedback--permission {
  border-color: color-mix(in srgb, var(--kkb-danger) 42%, var(--kkb-line));
  color: var(--kkb-danger);
  background: color-mix(in srgb, var(--kkb-danger) 7%, var(--kkb-surface));
}

.feedback--warning {
  border-color: color-mix(in srgb, var(--kkb-warning) 42%, var(--kkb-line));
  color: var(--kkb-warning);
  background: color-mix(in srgb, var(--kkb-warning) 8%, var(--kkb-surface));
}

.feedback__icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 850;
}

.feedback__message {
  margin: 1px 0 0;
  color: inherit;
  font-weight: 650;
}

.feedback__request {
  margin-top: 3px;
  color: var(--kkb-muted);
  font-size: 11px;
  user-select: all;
  word-break: break-all;
}

.feedback__close {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 0;
  color: currentColor;
  background: none;
  cursor: pointer;
}

.public-footer {
  min-height: 68px;
  padding: 20px;
  display: grid;
  place-items: center;
  border-top: 1px solid var(--kkb-line);
  color: var(--kkb-muted);
  background: var(--kkb-surface);
  font-size: 12px;
  text-align: center;
}

.workspace {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 56px;
}

.workspace-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.workspace-heading h1 {
  font-size: clamp(27px, 4vw, 36px);
}

.workspace-heading__description {
  margin: 8px 0 0;
  color: var(--kkb-muted);
  font-size: 14px;
}

.workspace-summary {
  min-width: 142px;
  padding: 11px 14px;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  background: var(--kkb-surface);
  text-align: right;
}

.workspace-summary__label {
  display: block;
  color: var(--kkb-muted);
  font-size: 11px;
}

.workspace-summary__value {
  display: block;
  margin-top: 2px;
  color: var(--kkb-data-accent);
  font-size: 18px;
  font-weight: 820;
  font-variant-numeric: tabular-nums;
}

.workspace-summary__time {
  display: block;
  margin-top: 2px;
  color: var(--kkb-muted);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.workspace-toolbar {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.breadcrumbs {
  min-height: 42px;
  padding: 7px 8px;
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
  border: 1px solid var(--kkb-line);
  border-radius: var(--kkb-radius);
  background: var(--kkb-surface);
}

.breadcrumbs__button {
  min-height: 28px;
  max-width: 230px;
  padding: 4px 7px;
  overflow: hidden;
  border: 0;
  border-radius: calc(var(--kkb-radius) / 2);
  color: var(--kkb-primary-strong);
  background: none;
  font-size: 13px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.breadcrumbs__button[aria-current="page"] {
  color: var(--kkb-ink);
  background: color-mix(in srgb, var(--kkb-canvas) 78%, var(--kkb-surface));
  cursor: default;
}

.breadcrumbs__separator {
  color: var(--kkb-muted);
  font-size: 13px;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.workspace-feedback {
  margin-top: 16px;
  margin-bottom: 0;
}

.drop-zone {
  margin-top: 16px;
  padding: 23px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border: 2px dashed color-mix(in srgb, var(--kkb-primary) 42%, var(--kkb-line));
  border-radius: var(--kkb-radius);
  color: var(--kkb-muted);
  background: color-mix(in srgb, var(--kkb-primary) 5%, var(--kkb-surface));
  text-align: center;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease;
}

.drop-zone:hover,
.drop-zone.is-active {
  border-color: var(--kkb-primary);
  background: color-mix(in srgb, var(--kkb-primary) 11%, var(--kkb-surface));
}

.drop-zone__icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--kkb-primary-strong);
  background: var(--kkb-surface);
  font-size: 22px;
  font-weight: 350;
}

.drop-zone__copy {
  display: grid;
  gap: 2px;
  text-align: left;
}

.drop-zone__copy strong {
  color: var(--kkb-ink);
  font-size: 14px;
}

.drop-zone__copy span {
  font-size: 12px;
}

.upload-progress {
  margin-top: 12px;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--kkb-data-accent) 34%, var(--kkb-line));
  border-radius: var(--kkb-radius);
  background: var(--kkb-surface);
}

.upload-progress__head {
  margin-bottom: 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
}

.upload-progress__title {
  font-weight: 750;
}

.upload-progress__detail {
  color: var(--kkb-muted);
  font-variant-numeric: tabular-nums;
}

.progress-track {
  display: block;
  width: 100%;
  height: 8px;
  overflow: hidden;
  appearance: none;
  border: 0;
  border-radius: var(--kkb-radius);
  background: color-mix(in srgb, var(--kkb-data-accent) 12%, var(--kkb-surface));
  color: var(--kkb-data-accent);
}

.progress-track::-webkit-progress-bar {
  border-radius: inherit;
  background: color-mix(in srgb, var(--kkb-data-accent) 12%, var(--kkb-surface));
}

.progress-track::-webkit-progress-value {
  border-radius: inherit;
  background: var(--kkb-data-accent);
}

.progress-track::-moz-progress-bar {
  border-radius: inherit;
  background: var(--kkb-data-accent);
}

.entry-panel {
  min-height: 330px;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid var(--kkb-line);
  border-radius: calc(var(--kkb-radius) + 2px);
  background: var(--kkb-surface);
}

.panel-state {
  min-height: 330px;
  padding: 42px 24px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  color: var(--kkb-muted);
  text-align: center;
}

.panel-state__icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--kkb-primary-strong);
  background: color-mix(in srgb, var(--kkb-primary) 10%, var(--kkb-surface));
  font-size: 23px;
  font-weight: 750;
}

.panel-state--error .panel-state__icon,
.panel-state--permission .panel-state__icon {
  color: var(--kkb-danger);
  background: color-mix(in srgb, var(--kkb-danger) 8%, var(--kkb-surface));
}

.panel-state h2 {
  margin: 5px 0 0;
  color: var(--kkb-ink);
  font-size: 18px;
}

.panel-state p {
  max-width: 480px;
  margin: 0;
  font-size: 13px;
}

.panel-state__request {
  color: var(--kkb-muted);
  font-size: 11px !important;
  user-select: all;
  word-break: break-all;
}

.panel-state__actions {
  margin-top: 8px;
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 4px solid var(--kkb-line);
  border-top-color: var(--kkb-primary);
  border-radius: 50%;
  animation: spin 720ms linear infinite;
}

.file-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.file-table th {
  height: 44px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--kkb-line);
  color: var(--kkb-muted);
  background: color-mix(in srgb, var(--kkb-canvas) 72%, var(--kkb-surface));
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.03em;
  text-align: left;
}

.file-table td {
  height: 58px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--kkb-line);
  font-size: 13px;
  vertical-align: middle;
}

.file-table tbody tr:last-child td {
  border-bottom: 0;
}

.file-table tbody tr:hover {
  background: color-mix(in srgb, var(--kkb-primary) 4%, var(--kkb-surface));
}

.file-table__name {
  width: auto;
}

.file-table__size {
  width: 130px;
}

.file-table__date {
  width: 190px;
}

.file-table__actions {
  width: 82px;
  text-align: right !important;
}

.entry-link {
  max-width: 100%;
  padding: 5px 4px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  border: 0;
  border-radius: calc(var(--kkb-radius) / 2);
  color: var(--kkb-ink);
  background: none;
  font-weight: 700;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.entry-link:hover {
  color: var(--kkb-primary-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-link__icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: calc(var(--kkb-radius) / 2);
  color: var(--kkb-data-accent);
  background: color-mix(in srgb, var(--kkb-data-accent) 9%, var(--kkb-surface));
  font-size: 15px;
  text-decoration: none;
}

.entry-link--folder .entry-link__icon {
  color: var(--kkb-primary-strong);
  background: color-mix(in srgb, var(--kkb-primary) 10%, var(--kkb-surface));
}

.entry-link__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.entry-meta {
  color: var(--kkb-muted);
  font-variant-numeric: tabular-nums;
}

.icon-button {
  width: 34px;
  height: 34px;
  padding: 0;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--kkb-surface);
  border-radius: calc(var(--kkb-radius) / 2);
  color: var(--kkb-muted);
  background: none;
  cursor: pointer;
}

.icon-button:hover {
  border-color: color-mix(in srgb, var(--kkb-danger) 28%, var(--kkb-line));
  color: var(--kkb-danger);
  background: color-mix(in srgb, var(--kkb-danger) 7%, var(--kkb-surface));
}

.dialog {
  width: min(460px, calc(100% - 32px));
  padding: 0;
  border: 1px solid var(--kkb-line);
  border-radius: calc(var(--kkb-radius) + 4px);
  color: var(--kkb-ink);
  background: var(--kkb-surface);
  box-shadow: 0 24px 64px color-mix(in srgb, var(--kkb-ink) 18%, var(--kkb-surface));
}

.dialog::backdrop {
  background: var(--kkb-ink);
  opacity: 0.56;
}

.dialog__body {
  padding: 24px;
}

.dialog__body h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.dialog__description {
  margin: 8px 0 0;
  color: var(--kkb-muted);
  font-size: 13px;
}

.dialog__actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.toast-region {
  position: fixed;
  z-index: 90;
  right: 22px;
  bottom: 22px;
  width: min(390px, calc(100% - 44px));
  pointer-events: none;
}

.toast-region .feedback {
  margin: 0;
  box-shadow: 0 12px 34px color-mix(in srgb, var(--kkb-ink) 16%, var(--kkb-surface));
  pointer-events: auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 820px) {
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .auth-intro {
    gap: 28px;
  }

  .security-note {
    display: none;
  }

  .workspace-heading {
    align-items: start;
  }
}

@media (max-width: 720px) {
  .public-header__inner,
  .app-header__inner,
  .workspace,
  .auth-shell {
    width: min(100% - 28px, 1180px);
  }

  .public-header__label,
  .account__copy,
  .workspace-summary {
    display: none;
  }

  .workspace {
    padding-top: 24px;
  }

  .workspace-heading {
    display: block;
  }

  .workspace-toolbar {
    align-items: stretch;
  }

  .breadcrumbs {
    width: 100%;
  }

  .toolbar-actions {
    width: 100%;
  }

  .toolbar-actions .button {
    flex: 1 1 auto;
  }

  .drop-zone {
    padding: 18px 14px;
  }

  .file-table,
  .file-table tbody,
  .file-table tr,
  .file-table td {
    display: block;
  }

  .file-table thead {
    display: none;
  }

  .file-table tr {
    position: relative;
    padding: 13px 54px 13px 14px;
    border-bottom: 1px solid var(--kkb-line);
  }

  .file-table tbody tr:last-child {
    border-bottom: 0;
  }

  .file-table td {
    width: auto;
    height: auto;
    padding: 2px 0;
    border: 0;
  }

  .file-table__date,
  .file-table__size {
    display: inline;
    margin: 0 8px 0 42px;
    font-size: 11px;
  }

  .file-table__actions {
    position: absolute;
    top: 16px;
    right: 13px;
  }

  .entry-link {
    width: 100%;
  }

  .auth-shell {
    padding: 24px 0;
  }

  .auth-intro,
  .auth-panel {
    padding: 30px 24px;
  }

  .auth-intro h1 {
    font-size: 34px;
  }
}

@media (max-width: 460px) {
  .brand__sub,
  .drop-zone__copy span {
    display: none;
  }

  .app-header__actions {
    gap: 4px;
  }

  .button--compact {
    padding-inline: 9px;
  }

  .dialog__actions {
    flex-direction: column-reverse;
  }

  .dialog__actions .button {
    width: 100%;
  }

  .feedback {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .feedback__close {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}