/* Workspace layout; colors and controls inherit the shared design system. */
.light-workspace {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font: var(--weight-normal) var(--font-size-sm)/var(--line-height-body) var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
.light-workspace *, .light-workspace *::before, .light-workspace *::after { box-sizing: border-box; }
.light-workspace [hidden] { display: none !important; }
.light-workspace button:not(.btn), .light-workspace input, .light-workspace textarea, .light-workspace select { font: inherit; }
.light-workspace button { cursor: pointer; }
.light-workspace button:disabled { cursor: not-allowed; }
.light-workspace .nex-summarize-page a:not(.btn) { color: var(--color-accent-strong); text-underline-offset: 3px; }
.light-workspace :focus-visible { outline: var(--focus-ring-width) solid var(--color-focus); outline-offset: var(--focus-ring-offset); }
.light-workspace .workspace-icon { display: block; width: 18px; height: 18px; flex-shrink: 0; }
.light-workspace .workspace-skip-link { position: fixed; left: 16px; top: -100px; z-index: 1000; padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm); background: var(--color-surface); }
.light-workspace .workspace-skip-link:focus { top: 8px; }

/* Page and form hierarchy. */
.light-workspace .nex-summarize-page { padding: var(--space-8) var(--space-6) var(--space-16); container-type: inline-size; container-name: workspace; }
.light-workspace .nex-summarize-page__inner { max-width: 1100px; margin: 0 auto; }
.light-workspace .nex-section-header { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-2); font-size: var(--font-size-xs); font-weight: var(--weight-bold); letter-spacing: var(--letter-spacing-label); text-transform: uppercase; }
.light-workspace .nex-section-num { color: var(--color-accent-strong); }
.light-workspace .nex-section-label { color: var(--color-text-secondary); }
.light-workspace .nex-summarize__headline { margin: 0; font-family: var(--font-editorial); font-size: var(--fs-display-md); font-weight: var(--weight-heavy); line-height: 1.16; letter-spacing: var(--letter-spacing-heading); }
.light-workspace .workspace-subtitle { margin: 9px 0 var(--space-6); font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.light-workspace .nex-form-shell { display: flex; flex-direction: column; }
.light-workspace .summary-workspace { width: 100%; min-width: 0; margin: 0; order: 0; }
.light-workspace .workspace-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-1-5); margin-bottom: var(--space-3); background: var(--color-surface); border: var(--border-width) solid var(--color-border); border-radius: var(--radius-control); }
.light-workspace .source-method__options { display: flex; flex-wrap: wrap; gap: var(--space-1-5); }
.light-workspace .source-method__option, .light-workspace .workspace-preferences-button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; }
.light-workspace .source-method__option .workspace-icon, .light-workspace .workspace-preferences-button .workspace-icon { width: 16px; height: 16px; }
.light-workspace .workspace-preferences-button { margin-left: auto; }
.light-workspace .summary-panel { padding: var(--space-7) var(--space-7) 0; border: var(--border-width) solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.light-workspace .summary-grid { display: grid; grid-template-columns: minmax(0, 1.85fr) minmax(300px, 1fr); gap: var(--space-7); }
.light-workspace .workspace-document, .light-workspace .workspace-preferences { min-width: 0; }
.light-workspace .workspace-preferences { border-left: var(--border-width) solid var(--color-border); padding-left: var(--space-7); scroll-margin-top: 88px; }
.light-workspace .workspace-preferences:focus { outline: var(--focus-ring-width) solid var(--color-focus); outline-offset: calc(var(--focus-ring-offset) * 2); border-radius: var(--radius-sm); }
.light-workspace .workspace-section-heading { display: flex; align-items: center; gap: 9px; margin: 0 0 var(--space-4-5); font-size: var(--font-size-sm); font-weight: var(--weight-bold); line-height: var(--line-height-body); letter-spacing: var(--letter-spacing-heading); }
.light-workspace .workspace-section-heading .workspace-icon { color: var(--color-accent); }

/* File, text and URL sources share one predictable input area. */
.light-workspace .nex-drop-zone { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; min-height: 268px; padding: var(--space-7) var(--space-5); border: var(--border-width) dashed var(--color-accent-border); border-radius: var(--radius-control); background: var(--color-accent-soft); text-align: center; transition: border-color 150ms ease, background-color 150ms ease; }
.light-workspace .nex-drop-zone:hover, .light-workspace .nex-drop-zone.is-drag-over { border-color: var(--color-accent); background: var(--color-accent-soft); }
.light-workspace .nex-drop-zone:focus-within { outline: var(--focus-ring-width) solid var(--color-focus); outline-offset: var(--focus-ring-offset); }
.light-workspace .nex-drop-zone.has-invalid-file { border-color: var(--color-danger); }
.light-workspace .nex-drop-zone__icon, .light-workspace .workspace-url-icon { display: flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: var(--radius-card); background: var(--color-accent-soft); color: var(--color-accent); margin-bottom: var(--space-3); }
.light-workspace .nex-drop-zone__icon .workspace-icon { width: 25px; height: 25px; }
.light-workspace .nex-drop-zone__hint { margin: 0; font-size: var(--font-size-sm); line-height: var(--line-height-body); font-weight: var(--weight-bold); }
.light-workspace .nex-drop-zone__hint > span { display: block; margin-top: var(--space-0-75); color: var(--color-text-secondary); font-size: var(--font-size-xs); font-weight: var(--weight-normal); }
.light-workspace .nex-drop-zone__hint .nex-drop-zone__action { color: var(--color-accent-strong); font-weight: var(--weight-semibold); }
.light-workspace .workspace-upload-limit { margin: 5px 0 0; color: var(--color-text-muted); font-size: var(--font-size-xs); }
.light-workspace #pdf { position: absolute; inset: 0; z-index: 1; opacity: 0; width: 100%; height: 100%; padding: 0; cursor: pointer; }
.light-workspace .nex-drop-zone__file-row { position: relative; z-index: 2; display: flex; justify-content: center; flex-wrap: wrap; gap: var(--space-1-5); max-width: 100%; margin-top: var(--space-4); pointer-events: none; }
.light-workspace .nex-drop-zone__filename { flex-basis: 100%; font-weight: var(--weight-semibold); overflow-wrap: anywhere; }
.light-workspace .nex-drop-zone__file-meta { flex-basis: 100%; color: var(--color-text-secondary); font-size: var(--font-size-xs); margin-bottom: var(--space-1-5); }
.light-workspace .nex-drop-zone__file-row button { position: relative; pointer-events: auto; }
.light-workspace .summary-workspace input:not([type="file"]):not([type="hidden"]):not([type="checkbox"]),
.light-workspace .summary-workspace textarea, .light-workspace .summary-workspace select { display: block; width: 100%; min-width: 0; min-height: var(--control-height); padding: var(--space-2-5) var(--space-3); border: var(--border-width) solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); font-size: var(--font-size-sm); line-height: var(--line-height-body); box-shadow: none; }
.light-workspace .summary-workspace input::placeholder, .light-workspace .summary-workspace textarea::placeholder { color: var(--color-text-muted); opacity: 1; }
/* Keep control boundaries distinct even when shared error styles apply in dark mode. */
.light-workspace .nex-form-shell form.summary-workspace input:not([type="file"]):not([type="hidden"]):not([type="checkbox"]),
.light-workspace .nex-form-shell form.summary-workspace textarea#text,
.light-workspace .nex-form-shell form.summary-workspace select { border-color: var(--color-border-strong); }
.light-workspace .summary-workspace [aria-invalid="true"] { border-color: var(--color-danger); }
.light-workspace .summary-workspace textarea { min-height: 268px; max-height: 420px; resize: vertical; line-height: 1.7; }
.light-workspace .workspace-editor-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-1) var(--space-3); margin: var(--space-2) 0 0; font-size: var(--font-size-xs); color: var(--color-text-secondary); }
.light-workspace .workspace-url-panel { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; min-height: 268px; border-radius: var(--radius-control); background: var(--color-bg-secondary); padding: var(--space-6); }
.light-workspace .workspace-title-field { margin-top: var(--space-4-5); }
.light-workspace .summary-workspace label:not(.visually-hidden), .light-workspace .summary-workspace legend { display: block; padding: 0; margin: 0 0 var(--space-1-5); font-size: var(--font-size-xs); font-weight: var(--weight-semibold); color: var(--color-text); }
.light-workspace .label-hint { color: var(--color-text-secondary); font-weight: var(--weight-normal); }
.light-workspace .privacy-note, .light-workspace .workspace-help { color: var(--color-text-secondary); font-size: var(--font-size-xs); line-height: var(--line-height-body); margin: var(--space-2) 0 0; }

/* Preferences use the existing select and depth values. */
.light-workspace .summary-controls-grid { display: grid; gap: var(--space-4); }
.light-workspace .summary-workspace select { padding-right: 30px; cursor: pointer; }
.light-workspace .depth-field, .light-workspace .synthesis-opt-in { border: 0; padding: 0; margin: var(--space-4-5) 0 0; min-width: 0; }
.light-workspace .depth-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-1-5); }
.light-workspace .depth-option { min-width: 0; }
.light-workspace #depth_description { min-height: 35px; }
.light-workspace .workspace-more-preferences { margin-top: var(--space-3); border-top: var(--border-width) solid var(--color-border); }
.light-workspace .workspace-more-preferences > summary { cursor: pointer; min-height: var(--control-height); padding: var(--space-3) 0; font-size: var(--font-size-xs); font-weight: var(--weight-semibold); }
.light-workspace .workspace-more-preferences > summary > span { margin-left: 7px; color: var(--color-text-muted); font-size: var(--font-size-xs); font-weight: var(--weight-normal); }
.light-workspace .workspace-more-preferences[open] { padding-bottom: var(--space-4); }
.light-workspace .synthesis-opt-in label.synthesis-opt-in__choice { display: flex; gap: 9px; align-items: flex-start; }
.light-workspace .synthesis-opt-in input { width: 16px; height: 16px; flex-shrink: 0; margin: var(--space-0-5) 0 0; accent-color: var(--color-accent); }

/* Actions and actual generation feedback. */
.light-workspace .summary-panel__footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3) var(--space-5); border-top: var(--border-width) solid var(--color-border); padding: var(--space-4) 0; margin-top: var(--space-6); }
.light-workspace .workspace-usage-note { display: flex; align-items: center; gap: var(--space-2); margin: 0; color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.light-workspace .workspace-usage-note .workspace-icon { width: 16px; height: 16px; }
.light-workspace .summary-actions-group { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2-5); margin-left: auto; }
.light-workspace .summary-submit-button, .light-workspace .summary-nutshell-button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; }
.light-workspace .summary-submit-button .workspace-icon, .light-workspace .summary-nutshell-button .workspace-icon { width: 16px; height: 16px; }
.light-workspace .submit-status { width: 100%; margin: 0; color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.light-workspace .submit-status:empty { display: none; }
.light-workspace .nutshell-panel { border-top: var(--border-width) solid var(--color-border); padding: var(--space-5) 0 var(--space-6); }
.light-workspace .nutshell-panel__header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.light-workspace .nutshell-badge { display: flex; align-items: center; gap: var(--space-2); font-weight: var(--weight-bold); }
.light-workspace .nutshell-badge .workspace-icon { color: var(--color-accent); }
.light-workspace .nutshell-copy-btn, .light-workspace .nutshell-error__retry-btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); }
.light-workspace .nutshell-copy-btn svg, .light-workspace .nutshell-error__icon svg { width: 18px; height: 18px; flex-shrink: 0; }
.light-workspace .nutshell-text { white-space: pre-wrap; line-height: 1.8; margin: var(--space-4) 0 0; overflow-wrap: anywhere; }
.light-workspace .nutshell-loading { align-items: center; gap: var(--space-3); color: var(--color-text-secondary); margin-top: var(--space-4); }
.light-workspace .nutshell-spinner { width: 18px; height: 18px; border: var(--border-width-strong) solid var(--color-border); border-top-color: var(--color-accent); border-radius: 50%; animation: workspace-spin .8s linear infinite; flex-shrink: 0; }
.light-workspace .nutshell-error { align-items: flex-start; gap: var(--space-3); padding: var(--space-4); margin-top: var(--space-4); border: var(--border-width) solid var(--color-danger); border-radius: var(--radius-sm); color: var(--color-danger); }
.light-workspace .nutshell-error__content { flex: 1; min-width: 0; }
.light-workspace .nutshell-error__message { color: var(--color-text-secondary); margin: var(--space-2) 0 0; }

/* Real account limits and privacy stay visible below the workspace. */
.light-workspace .workspace-privacy-note { order: 1; color: var(--color-text-muted); font-size: var(--font-size-xs); margin: var(--space-3) 0 0; }
.light-workspace .student-trial { order: 2; }
.light-workspace .student-trial[data-blocked="0"] { display: flex; align-items: baseline; flex-wrap: wrap; gap: var(--space-1) var(--space-3); padding: 0; border: 0; border-radius: 0; background: transparent; margin: var(--space-3) 0 0; font-size: var(--font-size-xs); }
.light-workspace .student-trial[data-blocked="0"] p { margin: 0; }
.light-workspace .student-trial small { font-size: var(--font-size-xs); }
.light-workspace .student-trial[data-blocked="1"] { order: -1; }
.light-workspace .summary-workspace[data-trial-blocked="1"] .workspace-toolbar { display: none; }

/* The shared logout script retains its existing accessible dialog. */
.light-workspace.modal-open { overflow: hidden; }
.light-workspace .confirmation-modal { position: fixed; inset: 0; z-index: 900; display: flex; align-items: center; justify-content: center; padding: var(--space-6); background: var(--color-overlay); }
.light-workspace .confirmation-modal__backdrop { position: absolute; inset: 0; }
.light-workspace .confirmation-modal__dialog { position: relative; width: min(100%, 440px); padding: var(--space-7); border: var(--border-width) solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); }
.light-workspace .confirmation-modal__eyebrow { color: var(--color-text-secondary); font-size: var(--font-size-xs); text-transform: uppercase; letter-spacing: var(--letter-spacing-label); }
.light-workspace .confirmation-modal__title { font-size: var(--fs-heading-md); margin: var(--space-2) 0; }
.light-workspace .confirmation-modal__message { color: var(--color-text-secondary); }
.light-workspace .confirmation-modal__actions { display: flex; justify-content: flex-end; gap: var(--space-3); margin-top: var(--space-6); }

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

@media (max-width: 1100px) {
  .light-workspace .summary-panel { padding: var(--space-6) var(--space-6) 0; }
  .light-workspace .summary-grid { grid-template-columns: minmax(0, 1.5fr) minmax(290px, 1fr); gap: var(--space-6); }
  .light-workspace .workspace-preferences { padding-left: var(--space-6); }
  .light-workspace .summary-panel__footer { align-items: flex-start; }
}
@container workspace (max-width: 720px) {
  .light-workspace .summary-grid { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
  .light-workspace .workspace-preferences { border-left: 0; border-top: var(--border-width) solid var(--color-border); padding: var(--space-6) 0 0; }
  .light-workspace .summary-controls-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .light-workspace .summary-panel__footer { flex-direction: column; }
  .light-workspace .summary-actions-group { width: 100%; margin-left: 0; }
  .light-workspace .summary-actions-group > button { flex: 1; }
}
@media (max-width: 768px) {
  .light-workspace .summary-workspace input:not([type="file"]):not([type="hidden"]):not([type="checkbox"]), .light-workspace .summary-workspace textarea, .light-workspace .summary-workspace select { font-size: var(--font-size-md); min-height: var(--control-height); }
}
@media (max-width: 540px) {
  .light-workspace .nex-summarize-page { padding: var(--space-6) var(--space-4) var(--space-12); }
  .light-workspace .nex-summarize__headline { font-size: var(--fs-heading-lg); max-width: 360px; }
  .light-workspace .workspace-subtitle { font-size: var(--font-size-xs); max-width: 330px; margin-bottom: var(--space-5); }
  .light-workspace .workspace-toolbar { flex-wrap: wrap; gap: var(--space-1); }
  .light-workspace .source-method__options { width: 100%; gap: var(--space-0-75); }
  .light-workspace .source-method__option { flex: 1; min-width: 0; gap: var(--space-1-5); }
  .light-workspace .workspace-preferences-button { width: 100%; margin: 0; border-top-color: var(--color-border); }
  .light-workspace .summary-panel { padding: var(--space-5) var(--space-4) 0; }
  .light-workspace .nex-drop-zone { min-height: 235px; padding: var(--space-6) var(--space-4); }
  .light-workspace .nex-drop-zone__hint > span { font-size: var(--font-size-xs); max-width: 240px; }
  .light-workspace .workspace-url-panel { padding: var(--space-5) var(--space-4); }
  .light-workspace .summary-controls-grid { grid-template-columns: minmax(0, 1fr); }
  .light-workspace .workspace-section-heading { margin-bottom: var(--space-4); }
  .light-workspace .summary-actions-group { flex-direction: column; align-items: stretch; gap: var(--space-2); }
  .light-workspace .summary-actions-group > button { width: 100%; flex: none; }
  .light-workspace .workspace-usage-note { font-size: var(--font-size-xs); }
  .light-workspace .nutshell-error { flex-wrap: wrap; }
  .light-workspace .nutshell-error__retry-btn { margin-left: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  .light-workspace *, .light-workspace *::before, .light-workspace *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}