/* Self-hosted variable fonts (SIL OFL 1.1). No remote fetch. */
@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("./fonts/inter-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("./fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url("./fonts/jetbrains-mono-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "JetBrains Mono Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url("./fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* Generated from src/tokens/tokens.ts. Do not edit. */

:root,
[data-theme="light"] {
  color-scheme: light;
  --ad-color-bg: #FAF9F7;
  --ad-color-surface: #FFFFFF;
  --ad-color-surface-raised: #FFFFFF;
  --ad-color-surface-sunken: #F3F1EE;
  --ad-color-surface-hover: #E9E6E1;
  --ad-color-text: #1D1C1A;
  --ad-color-text-muted: #5E5A53;
  --ad-color-text-on-accent: #FFFFFF;
  --ad-color-border: #DAD7D1;
  --ad-color-border-strong: #827D73;
  --ad-color-accent: #2B4BC4;
  --ad-color-accent-hover: #223D9F;
  --ad-color-accent-subtle: #E8EDFC;
  --ad-color-accent-text: #223D9F;
  --ad-color-agent: #8E2C86;
  --ad-color-agent-subtle: #F7E8F5;
  --ad-color-agent-text: #7A2273;
  --ad-color-danger: #B42318;
  --ad-color-danger-subtle: #FDECEA;
  --ad-color-danger-text: #A11D14;
  --ad-color-warning: #92520A;
  --ad-color-warning-subtle: #FDF1DC;
  --ad-color-warning-text: #7A4208;
  --ad-color-success: #1B6B3A;
  --ad-color-success-subtle: #E6F5EC;
  --ad-color-success-text: #175C32;
  --ad-color-focus: #2B4BC4;
  --ad-color-scrim: rgb(29 28 26 / 0.4);
  --ad-shadow-raised: 0 1px 2px rgb(29 28 26 / 0.06), 0 2px 16px rgb(29 28 26 / 0.08);
  --ad-shadow-floating: 0 2px 6px rgb(29 28 26 / 0.08), 0 8px 40px rgb(29 28 26 / 0.16);
}

:root {
  --ad-space-1: 0.25rem;
  --ad-space-2: 0.5rem;
  --ad-space-3: 0.75rem;
  --ad-space-4: 1rem;
  --ad-space-6: 1.5rem;
  --ad-space-8: 2rem;
  --ad-space-12: 3rem;
  --ad-space-16: 4rem;
  --ad-space-24: 6rem;
  --ad-radius-sm: 0.25rem;
  --ad-radius-md: 0.5rem;
  --ad-radius-lg: 0.75rem;
  --ad-radius-full: 9999px;
  --ad-font-family-sans: "Inter Variable", ui-sans-serif, system-ui, sans-serif;
  --ad-font-family-mono: "JetBrains Mono Variable", ui-monospace, "SF Mono", Menlo, monospace;
  --ad-font-size-xs: 0.75rem;
  --ad-font-size-sm: 0.875rem;
  --ad-font-size-md: 1rem;
  --ad-font-size-lg: 1.125rem;
  --ad-font-size-xl: 1.5rem;
  --ad-font-size-2xl: 2rem;
  --ad-line-height-tight: 1.25;
  --ad-line-height-snug: 1.4;
  --ad-line-height-normal: 1.55;
  --ad-font-weight-regular: 400;
  --ad-font-weight-medium: 500;
  --ad-font-weight-semibold: 600;
  --ad-duration-fast: 100ms;
  --ad-duration-base: 160ms;
  --ad-duration-slow: 240ms;
  --ad-easing-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ad-size-control: 2rem;
  --ad-size-control-touch: 2.75rem;
  --ad-size-sidebar: 16rem;
  --ad-size-panel: 20rem;
  --ad-size-topbar: 3rem;
  --ad-size-content: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --ad-color-bg: #141311;
    --ad-color-surface: #1B1A18;
    --ad-color-surface-raised: #232220;
    --ad-color-surface-sunken: #100F0E;
    --ad-color-surface-hover: #2E2C29;
    --ad-color-text: #EDEBE7;
    --ad-color-text-muted: #A9A49A;
    --ad-color-text-on-accent: #0E1633;
    --ad-color-border: #2E2C29;
    --ad-color-border-strong: #7A756B;
    --ad-color-accent: #8EA4FF;
    --ad-color-accent-hover: #A9BAFF;
    --ad-color-accent-subtle: #1E2745;
    --ad-color-accent-text: #B3C2FF;
    --ad-color-agent: #E49BDC;
    --ad-color-agent-subtle: #3A1F37;
    --ad-color-agent-text: #F0B8E9;
    --ad-color-danger: #F2877D;
    --ad-color-danger-subtle: #3B1A17;
    --ad-color-danger-text: #F8A39B;
    --ad-color-warning: #E8B04A;
    --ad-color-warning-subtle: #3A2A0F;
    --ad-color-warning-text: #F0C677;
    --ad-color-success: #6FCF97;
    --ad-color-success-subtle: #14301F;
    --ad-color-success-text: #8BDBAC;
    --ad-color-focus: #A9BAFF;
    --ad-color-scrim: rgb(0 0 0 / 0.6);
    --ad-shadow-raised: 0 1px 2px rgb(0 0 0 / 0.3), 0 2px 16px rgb(0 0 0 / 0.3);
    --ad-shadow-floating: 0 2px 6px rgb(0 0 0 / 0.3), 0 8px 40px rgb(0 0 0 / 0.5);
  }
}

[data-theme="dark"] {
  color-scheme: dark;
  --ad-color-bg: #141311;
  --ad-color-surface: #1B1A18;
  --ad-color-surface-raised: #232220;
  --ad-color-surface-sunken: #100F0E;
  --ad-color-surface-hover: #2E2C29;
  --ad-color-text: #EDEBE7;
  --ad-color-text-muted: #A9A49A;
  --ad-color-text-on-accent: #0E1633;
  --ad-color-border: #2E2C29;
  --ad-color-border-strong: #7A756B;
  --ad-color-accent: #8EA4FF;
  --ad-color-accent-hover: #A9BAFF;
  --ad-color-accent-subtle: #1E2745;
  --ad-color-accent-text: #B3C2FF;
  --ad-color-agent: #E49BDC;
  --ad-color-agent-subtle: #3A1F37;
  --ad-color-agent-text: #F0B8E9;
  --ad-color-danger: #F2877D;
  --ad-color-danger-subtle: #3B1A17;
  --ad-color-danger-text: #F8A39B;
  --ad-color-warning: #E8B04A;
  --ad-color-warning-subtle: #3A2A0F;
  --ad-color-warning-text: #F0C677;
  --ad-color-success: #6FCF97;
  --ad-color-success-subtle: #14301F;
  --ad-color-success-text: #8BDBAC;
  --ad-color-focus: #A9BAFF;
  --ad-color-scrim: rgb(0 0 0 / 0.6);
  --ad-shadow-raised: 0 1px 2px rgb(0 0 0 / 0.3), 0 2px 16px rgb(0 0 0 / 0.3);
  --ad-shadow-floating: 0 2px 6px rgb(0 0 0 / 0.3), 0 8px 40px rgb(0 0 0 / 0.5);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --ad-duration-fast: 0.01ms;
    --ad-duration-base: 0.01ms;
    --ad-duration-slow: 0.01ms;
  }
}


/* Base rules. Components and apps build on these. */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* 14px suits dense app screens. Long reading text, such as page prose, should use --ad-font-size-md. */
body {
  margin: 0;
  background: var(--ad-color-bg);
  color: var(--ad-color-text);
  font-family: var(--ad-font-family-sans);
  font-size: var(--ad-font-size-sm);
  line-height: var(--ad-line-height-normal);
  font-feature-settings: "cv11", "ss03";
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  margin: 0;
  line-height: var(--ad-line-height-tight);
  font-weight: var(--ad-font-weight-semibold);
  text-wrap: balance;
}
h1 { font-size: var(--ad-font-size-2xl); }
h2 { font-size: var(--ad-font-size-xl); }
h3 { font-size: var(--ad-font-size-lg); }
h4 { font-size: var(--ad-font-size-md); }

p { margin: 0; text-wrap: pretty; }

a {
  color: var(--ad-color-accent-text);
  text-underline-offset: 0.2em;
}

code, kbd, pre {
  font-family: var(--ad-font-family-mono);
  font-size: 0.9em;
}

:focus-visible {
  outline: 2px solid var(--ad-color-focus);
  outline-offset: 2px;
}

::selection {
  background: var(--ad-color-accent-subtle);
  color: var(--ad-color-accent-text);
}

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

.ad-skip-link {
  position: absolute;
  inset-block-start: var(--ad-space-2);
  inset-inline-start: var(--ad-space-2);
  z-index: 100;
  padding: var(--ad-space-2) var(--ad-space-4);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface-raised);
  color: var(--ad-color-text);
  box-shadow: var(--ad-shadow-floating);
  transform: translateY(-200%);
}
.ad-skip-link:focus { transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Component styles. They read semantic tokens and set a few local variables. */
:root {
  --ad-control-h: var(--ad-size-control);
}
@media (pointer: coarse) {
  :root {
    --ad-control-h: var(--ad-size-control-touch);
  }
}

/* Button ------------------------------------------------------------ */
.ad-button {
  --button-bg: var(--ad-color-surface);
  --button-bg-hover: var(--ad-color-surface-hover);
  --button-bg-active: var(--ad-color-surface-sunken);
  --button-fg: var(--ad-color-text);
  --button-border: var(--ad-color-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ad-space-2);
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-4);
  border: 1px solid var(--button-border);
  border-radius: var(--ad-radius-md);
  background: var(--button-bg);
  color: var(--button-fg);
  font: inherit;
  font-weight: var(--ad-font-weight-medium);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--ad-duration-fast) var(--ad-easing-out);
}
.ad-button:hover { background: var(--button-bg-hover); }
.ad-button:active { background: var(--button-bg-active); }
.ad-button--sm {
  min-height: 1.75rem;
  padding: 0 var(--ad-space-3);
  font-size: var(--ad-font-size-xs);
}
@media (pointer: coarse) {
  .ad-button--sm { min-height: var(--ad-control-h); }
}
.ad-button--primary {
  --button-bg: var(--ad-color-accent);
  --button-bg-hover: var(--ad-color-accent-hover);
  --button-bg-active: var(--ad-color-accent-hover);
  --button-fg: var(--ad-color-text-on-accent);
  --button-border: transparent;
}
.ad-button--ghost {
  --button-bg: transparent;
  --button-border: transparent;
}
.ad-button--danger {
  --button-bg-hover: var(--ad-color-danger-subtle);
  --button-bg-active: var(--ad-color-danger-subtle);
  --button-fg: var(--ad-color-danger-text);
  --button-border: var(--ad-color-danger);
}
.ad-button:disabled {
  --button-bg: var(--ad-color-surface-sunken);
  --button-bg-hover: var(--ad-color-surface-sunken);
  --button-fg: var(--ad-color-text-muted);
  --button-border: var(--ad-color-border);
  cursor: not-allowed;
}
.ad-button[aria-busy="true"] { cursor: progress; }
.ad-icon-button {
  width: var(--ad-control-h);
  padding: 0;
}
.ad-icon-button.ad-button--sm { width: 1.75rem; }
@media (pointer: coarse) {
  .ad-icon-button.ad-button--sm { width: var(--ad-control-h); }
}
.ad-spinner {
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: ad-spin 700ms linear infinite;
}
@keyframes ad-spin { to { transform: rotate(360deg); } }

/* Field: label, control, hint, error -------------------------------- */
.ad-field {
  display: grid;
  gap: var(--ad-space-1);
}
.ad-field__label {
  font-weight: var(--ad-font-weight-medium);
}
.ad-field__hint {
  color: var(--ad-color-text-muted);
  font-size: var(--ad-font-size-xs);
}
.ad-field__error {
  display: flex;
  align-items: flex-start;
  gap: var(--ad-space-1);
  color: var(--ad-color-danger-text);
  font-size: var(--ad-font-size-xs);
}
.ad-field__error svg { flex: none; margin-top: -0.1em; }

.ad-input {
  width: 100%;
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-3);
  border: 1px solid var(--ad-color-border-strong);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface);
  color: var(--ad-color-text);
  font: inherit;
}
.ad-input::placeholder { color: var(--ad-color-text-muted); opacity: 1; }
.ad-input:hover:not(:disabled) { background: var(--ad-color-surface-sunken); }
/* An invalid field has a thicker line as well as a red one, so color is not the only cue. */
.ad-input[aria-invalid="true"] { border-color: var(--ad-color-danger); box-shadow: inset 0 0 0 1px var(--ad-color-danger); }
.ad-input:disabled {
  background: var(--ad-color-surface-sunken);
  border-color: var(--ad-color-border);
  color: var(--ad-color-text-muted);
  cursor: not-allowed;
}
.ad-textarea {
  min-height: 5rem;
  padding: var(--ad-space-2) var(--ad-space-3);
  resize: vertical;
}
.ad-select { position: relative; display: block; }
.ad-select select { appearance: none; padding-inline-end: var(--ad-space-8); cursor: pointer; }
.ad-select::after {
  content: "";
  position: absolute;
  inset-inline-end: var(--ad-space-3);
  inset-block-start: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border: solid var(--ad-color-text-muted);
  border-width: 0 2px 2px 0;
  transform: translateY(-75%) rotate(45deg);
  pointer-events: none;
}

/* Checkbox and switch ----------------------------------------------- */
.ad-toggle { display: grid; gap: var(--ad-space-1); }
.ad-toggle__row {
  display: flex;
  align-items: center;
  gap: var(--ad-space-3);
  min-height: var(--ad-control-h);
  cursor: pointer;
}
.ad-checkbox,
.ad-switch {
  appearance: none;
  flex: none;
  margin: 0;
  border: 1px solid var(--ad-color-border-strong);
  background: var(--ad-color-surface);
  cursor: pointer;
  transition: background-color var(--ad-duration-fast) var(--ad-easing-out);
}
.ad-checkbox {
  display: grid;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: var(--ad-radius-sm);
}
.ad-checkbox::before {
  content: "";
  width: 0.75rem;
  height: 0.75rem;
  background: var(--ad-color-text-on-accent);
  clip-path: polygon(14% 52%, 0 66%, 38% 100%, 100% 20%, 86% 8%, 38% 72%);
  transform: scale(0);
  transition: transform var(--ad-duration-fast) var(--ad-easing-out);
}
.ad-checkbox:checked { background: var(--ad-color-accent); border-color: var(--ad-color-accent); }
.ad-checkbox:checked::before { transform: scale(1); }
.ad-switch {
  position: relative;
  width: 2.25rem;
  height: 1.375rem;
  border-radius: var(--ad-radius-full);
  background: var(--ad-color-surface-sunken);
}
.ad-switch::before {
  content: "";
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 0.2rem;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: var(--ad-radius-full);
  background: var(--ad-color-text-muted);
  transform: translateY(-50%);
  transition: inset-inline-start var(--ad-duration-base) var(--ad-easing-out);
}
.ad-switch:checked { background: var(--ad-color-accent); border-color: var(--ad-color-accent); }
/* The thumb moves by a logical inset, so it follows the page direction. */
.ad-switch:checked::before {
  background: var(--ad-color-text-on-accent);
  inset-inline-start: calc(100% - 0.875rem - 0.2rem);
}
.ad-checkbox:disabled,
.ad-switch:disabled { background: var(--ad-color-surface-sunken); border-color: var(--ad-color-border); cursor: not-allowed; }
.ad-checkbox:disabled::before { background: var(--ad-color-text-muted); }
.ad-switch:disabled::before { background: var(--ad-color-border); }

/* Overlays: dialog, menu, tooltip, toast ---------------------------- */
@keyframes ad-fade-in { from { opacity: 0; } }
@keyframes ad-pop-in { from { opacity: 0; scale: 0.97; } }

.ad-overlay {
  position: fixed;
  z-index: 50;
  inset: 0;
  background: var(--ad-color-scrim);
  animation: ad-fade-in var(--ad-duration-base) var(--ad-easing-out);
}
.ad-dialog {
  position: fixed;
  z-index: 50;
  inset: 0;
  margin: auto;
  width: min(32rem, calc(100vw - 2rem));
  height: fit-content;
  max-height: calc(100vh - 2rem);
  overflow: auto;
  padding: var(--ad-space-6);
  border: 1px solid var(--ad-color-border);
  border-radius: var(--ad-radius-lg);
  background: var(--ad-color-surface-raised);
  box-shadow: var(--ad-shadow-floating);
  animation: ad-pop-in var(--ad-duration-base) var(--ad-easing-out);
}
.ad-dialog__title { padding-inline-end: var(--ad-space-8); font-size: var(--ad-font-size-lg); }
.ad-dialog__description { margin-top: var(--ad-space-2); color: var(--ad-color-text-muted); }
.ad-dialog__body { margin-top: var(--ad-space-4); }
.ad-dialog__footer { display: flex; justify-content: flex-end; gap: var(--ad-space-2); margin-top: var(--ad-space-6); }
.ad-dialog__close { position: absolute; inset-block-start: var(--ad-space-3); inset-inline-end: var(--ad-space-3); }

/* A tooltip is an inverted surface. The pair text on bg is already checked. */
.ad-tooltip {
  z-index: 60;
  max-width: 16rem;
  padding: var(--ad-space-1) var(--ad-space-2);
  border-radius: var(--ad-radius-sm);
  background: var(--ad-color-text);
  color: var(--ad-color-bg);
  font-size: var(--ad-font-size-xs);
  animation: ad-fade-in var(--ad-duration-fast) var(--ad-easing-out);
}

.ad-menu {
  z-index: 60;
  min-width: 11rem;
  padding: var(--ad-space-1);
  border: 1px solid var(--ad-color-border);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface-raised);
  box-shadow: var(--ad-shadow-floating);
  animation: ad-pop-in var(--ad-duration-fast) var(--ad-easing-out);
}
.ad-menu__item {
  display: flex;
  align-items: center;
  gap: var(--ad-space-2);
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-3);
  border-radius: var(--ad-radius-sm);
  color: var(--ad-color-text);
  cursor: pointer;
  outline: none;
  user-select: none;
}
.ad-menu__item[data-highlighted] { background: var(--ad-color-surface-hover); }
.ad-menu__item[data-highlighted]:focus-visible,
.ad-menu__item:focus-visible { outline: 2px solid var(--ad-color-focus); outline-offset: -2px; }
.ad-menu__item[data-disabled] { color: var(--ad-color-text-muted); cursor: not-allowed; }
.ad-menu__item--danger { color: var(--ad-color-danger-text); }
.ad-menu__shortcut { margin-inline-start: auto; color: var(--ad-color-text-muted); font-size: var(--ad-font-size-xs); }
.ad-menu__separator { height: 1px; margin: var(--ad-space-1) 0; background: var(--ad-color-border); }

.ad-toast-viewport {
  position: fixed;
  inset-block-end: var(--ad-space-4);
  inset-inline-end: var(--ad-space-4);
  z-index: 70;
  display: grid;
  gap: var(--ad-space-2);
  width: min(24rem, calc(100vw - 2rem));
  margin: 0;
  padding: 0;
  list-style: none;
}
.ad-toast {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: var(--ad-space-3);
  padding: var(--ad-space-3) var(--ad-space-3) var(--ad-space-3) var(--ad-space-4);
  border: 1px solid var(--ad-color-border);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface-raised);
  box-shadow: var(--ad-shadow-floating);
}
.ad-toast[data-state="open"] { animation: ad-pop-in var(--ad-duration-base) var(--ad-easing-out); }
.ad-toast__icon { margin-top: var(--ad-space-1); }
.ad-toast--info .ad-toast__icon { color: var(--ad-color-accent); }
.ad-toast--success .ad-toast__icon { color: var(--ad-color-success); }
.ad-toast--warning .ad-toast__icon { color: var(--ad-color-warning); }
.ad-toast--danger .ad-toast__icon { color: var(--ad-color-danger); }
.ad-toast__title { font-weight: var(--ad-font-weight-medium); }
.ad-toast__description { margin-top: var(--ad-space-1); color: var(--ad-color-text-muted); }

/* Tabs --------------------------------------------------------------- */
.ad-tabs__list { display: flex; gap: var(--ad-space-1); border-bottom: 1px solid var(--ad-color-border); }
.ad-tabs__trigger {
  position: relative;
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-3);
  border: 0;
  background: transparent;
  color: var(--ad-color-text-muted);
  font: inherit;
  cursor: pointer;
}
.ad-tabs__trigger:hover { color: var(--ad-color-text); }
.ad-tabs__trigger[data-state="active"] { color: var(--ad-color-text); font-weight: var(--ad-font-weight-semibold); }
.ad-tabs__trigger[data-state="active"]::after {
  content: "";
  position: absolute;
  inset: auto var(--ad-space-3) -1px;
  height: 2px;
  background: var(--ad-color-accent);
}
.ad-tabs__panel { padding-top: var(--ad-space-4); }

/* App shell ---------------------------------------------------------- */
.ad-shell {
  display: grid;
  grid-template-columns: var(--ad-size-sidebar) minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  grid-template-areas: "sidebar topbar" "sidebar content";
  min-height: 100vh;
}
.ad-shell__sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  gap: var(--ad-space-4);
  padding: var(--ad-space-4) var(--ad-space-3);
  border-inline-end: 1px solid var(--ad-color-border);
  background: var(--ad-color-surface-sunken);
}
.ad-shell__brand { padding: 0 var(--ad-space-3); font-weight: var(--ad-font-weight-semibold); }
.ad-shell__topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: var(--ad-space-3);
  min-height: var(--ad-size-topbar);
  padding: 0 var(--ad-space-6);
  border-bottom: 1px solid var(--ad-color-border);
  background: var(--ad-color-bg);
}
.ad-shell__title { min-width: 0; flex: 0 1 auto; }
.ad-shell__actions { display: flex; align-items: center; gap: var(--ad-space-4); margin-inline-start: auto; }
.ad-shell__content { grid-area: content; min-width: 0; padding: var(--ad-space-8) var(--ad-space-6) var(--ad-space-24); outline: none; }
.ad-shell__menu { display: none; }
/* With the sidebar and the panel both beside it, the content needs room. Below 64rem the panel sits under the content. */
.ad-shell[data-panel] { grid-template-rows: auto 1fr auto; grid-template-areas: "sidebar topbar" "sidebar content" "sidebar panel"; }
@media (min-width: 64rem) {
  .ad-shell[data-panel] { grid-template-columns: var(--ad-size-sidebar) minmax(0, 1fr) var(--ad-size-panel); grid-template-rows: auto 1fr; grid-template-areas: "sidebar topbar topbar" "sidebar content panel"; }
}
.ad-shell__panel { grid-area: panel; min-width: 0; padding: var(--ad-space-6) var(--ad-space-4); border-block-start: 1px solid var(--ad-color-border); background: var(--ad-color-surface-sunken); }
@media (min-width: 64rem) { .ad-shell__panel { border-block-start: 0; border-inline-start: 1px solid var(--ad-color-border); } }
/* On a narrow screen the sidebar sits below the top bar, under the button that opens it. */
@media (max-width: 47.99rem) {
  .ad-shell { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto auto 1fr; grid-template-areas: "topbar" "sidebar" "content"; }
  .ad-shell__menu { display: inline-flex; }
  .ad-shell[data-panel] { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto auto 1fr auto; grid-template-areas: "topbar" "sidebar" "content" "panel"; }
  .ad-shell__sidebar[data-open="false"] { display: none; }
  .ad-shell__sidebar { border-inline-end: 0; border-bottom: 1px solid var(--ad-color-border); }
  .ad-shell__topbar, .ad-shell__content { padding-inline: var(--ad-space-4); }
}
.ad-sidebar-nav { display: grid; gap: var(--ad-space-1); margin: 0; padding: 0; list-style: none; }
.ad-sidebar-nav__link {
  display: flex;
  align-items: center;
  gap: var(--ad-space-2);
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-3);
  border-radius: var(--ad-radius-md);
  color: var(--ad-color-text);
  text-decoration: none;
}
.ad-sidebar-nav__link:hover { background: var(--ad-color-surface-hover); }
.ad-sidebar-nav__link[aria-current="page"] {
  background: var(--ad-color-accent-subtle);
  color: var(--ad-color-accent-text);
  font-weight: var(--ad-font-weight-semibold);
}

/* Toolbar ------------------------------------------------------------ */
.ad-toolbar {
  display: inline-flex;
  align-items: center;
  gap: var(--ad-space-1);
  padding: var(--ad-space-1);
  border: 1px solid var(--ad-color-border);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface);
}
.ad-toolbar__separator { align-self: stretch; width: 1px; margin: var(--ad-space-1); background: var(--ad-color-border); }
.ad-toolbar__group { display: inline-flex; align-items: center; gap: var(--ad-space-1); }
/* Pressed is shown by a thicker ring and a heavier label, as well as by color. */
.ad-button[aria-pressed="true"] {
  box-shadow: inset 0 0 0 1px var(--button-border);
  font-weight: var(--ad-font-weight-semibold);
  --button-bg: var(--ad-color-accent-subtle);
  --button-bg-hover: var(--ad-color-accent-subtle);
  --button-fg: var(--ad-color-accent-text);
  --button-border: var(--ad-color-accent);
}

/* Empty state and file list ------------------------------------------ */
.ad-empty { display: grid; justify-items: center; gap: var(--ad-space-3); padding: var(--ad-space-12) var(--ad-space-6); text-align: center; }
.ad-empty__title { font-size: var(--ad-font-size-lg); }
.ad-empty__description { max-width: 28rem; color: var(--ad-color-text-muted); }
.ad-files { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ad-color-border); }
.ad-file-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto auto;
  align-items: center;
  gap: var(--ad-space-4);
  min-height: 3rem;
  padding: var(--ad-space-1) var(--ad-space-2);
  border-bottom: 1px solid var(--ad-color-border);
}
.ad-file-row:hover { background: var(--ad-color-surface-sunken); }
.ad-file-row__icon { display: inline-flex; color: var(--ad-color-text-muted); }
.ad-file-row__name {
  min-height: 1.5rem;
  overflow: hidden;
  color: var(--ad-color-text);
  font-weight: var(--ad-font-weight-medium);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ad-file-row__meta, .ad-file-row__time { display: inline-flex; align-items: center; gap: var(--ad-space-2); color: var(--ad-color-text-muted); font-size: var(--ad-font-size-xs); }
.ad-file-row__actions { display: inline-flex; }
@media (max-width: 47.99rem) {
  .ad-file-row {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "icon name actions" ". meta meta" ". time time";
  }
  .ad-file-row__icon { grid-area: icon; }
  .ad-file-row__name { grid-area: name; }
  .ad-file-row__meta { grid-area: meta; }
  .ad-file-row__time { grid-area: time; }
  .ad-file-row__actions { grid-area: actions; }
}

/* File table and grid ------------------------------------------------ */
.ad-filetable { width: 100%; table-layout: fixed; border-collapse: collapse; border-top: 1px solid var(--ad-color-border); }
.ad-filetable th, .ad-filetable td { padding: var(--ad-space-1) var(--ad-space-3); border-bottom: 1px solid var(--ad-color-border); text-align: start; vertical-align: middle; }
.ad-filetable th { color: var(--ad-color-text-muted); font-size: var(--ad-font-size-xs); font-weight: var(--ad-font-weight-semibold); }
/* Fixed columns, so a long name is cut by an ellipsis and never widens the page. */
.ad-filetable th:nth-child(1) { width: 36%; }
.ad-filetable th:nth-child(2) { width: 36%; }
.ad-filetable th:nth-child(3) { width: 16%; }
.ad-filetable th:nth-child(4) { width: 12%; }
.ad-filetable td { height: 3rem; }
.ad-filetable td:first-child { overflow: hidden; }
/* The owner chip wraps in its cell. Its name, the word Agent, and who it acts for must all stay in view. */
.ad-filetable .ad-chip { flex-wrap: wrap; row-gap: 0; }
.ad-filetable tbody tr:hover { background: var(--ad-color-surface-sunken); }
.ad-filetable__sort {
  display: inline-flex;
  align-items: center;
  gap: var(--ad-space-1);
  min-height: var(--ad-control-h);
  padding: 0 var(--ad-space-2);
  border: 0;
  border-radius: var(--ad-radius-md);
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}
.ad-filetable__sort:hover { background: var(--ad-color-surface-hover); }
.ad-filetable__arrow { display: inline-block; min-width: 1ch; }
.ad-filetable__name { display: flex; align-items: center; gap: var(--ad-space-3); min-width: 0; }
.ad-filetable__name .ad-file-row__name { min-width: 0; flex: 1 1 auto; }
.ad-filetable td:has(.ad-skeleton) { padding-block: var(--ad-space-3); }
.ad-filegrid-wrap { display: grid; gap: var(--ad-space-4); }
.ad-filegrid-wrap > .ad-field { max-width: 16rem; }
.ad-filegrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: var(--ad-space-4); margin: 0; padding: 0; list-style: none; }
.ad-filegrid__item {
  display: grid;
  align-content: start;
  gap: var(--ad-space-2);
  min-height: 7rem;
  padding: var(--ad-space-3);
  border: 1px solid var(--ad-color-border);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface);
}
.ad-filegrid__head { display: flex; align-items: center; gap: var(--ad-space-2); min-width: 0; }
.ad-filegrid__item .ad-file-row__actions { justify-self: end; }
/* A placeholder is a plain block. The pulse stops when the user asks for reduced motion. */
.ad-skeleton { display: block; height: 1rem; border-radius: var(--ad-radius-sm); background: var(--ad-color-surface-hover); animation: ad-pulse 1.4s ease-in-out infinite; }
.ad-filegrid__item.ad-skeleton { height: auto; min-height: 7rem; border: 1px solid var(--ad-color-border); border-radius: var(--ad-radius-md); }
@keyframes ad-pulse { 50% { opacity: 0.5; } }
@media (max-width: 47.99rem) {
  .ad-filetable, .ad-filetable tbody, .ad-filetable tr { display: block; }
  .ad-filetable thead { display: block; }
  .ad-filetable thead tr { display: flex; flex-wrap: wrap; }
  .ad-filetable thead th:last-child { display: none; }
  .ad-filetable thead th { width: auto; }
  .ad-filetable tbody tr { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "name actions" "owner owner" "time time"; padding-block: var(--ad-space-1); border-bottom: 1px solid var(--ad-color-border); }
  .ad-filetable tbody td { padding: var(--ad-space-1) var(--ad-space-3); border-bottom: 0; }
  .ad-filetable tbody td:nth-child(1) { grid-area: name; }
  .ad-filetable tbody td:nth-child(2) { grid-area: owner; }
  .ad-filetable tbody td:nth-child(3) { grid-area: time; }
  .ad-filetable tbody td:nth-child(4) { grid-area: actions; }
}

/* Presence ----------------------------------------------------------- */
.ad-avatar {
  display: inline-grid;
  flex: none;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--ad-color-border-strong);
  background: var(--ad-color-surface-sunken);
  color: var(--ad-color-text);
  font-size: var(--ad-font-size-xs);
  font-weight: var(--ad-font-weight-medium);
  line-height: 1;
}
.ad-avatar svg { width: 0.9rem; height: 0.9rem; }
.ad-avatar--person { border-radius: var(--ad-radius-full); }
.ad-avatar--agent {
  border-color: var(--ad-color-agent);
  border-radius: var(--ad-radius-sm);
  background: var(--ad-color-agent-subtle);
  color: var(--ad-color-agent-text);
}
.ad-avatar--more { border-radius: var(--ad-radius-full); background: var(--ad-color-surface); color: var(--ad-color-text-muted); }
.ad-chip { display: inline-flex; align-items: center; gap: var(--ad-space-2); max-width: 100%; min-width: 0; }
.ad-chip__name { overflow: hidden; color: var(--ad-color-text); font-weight: var(--ad-font-weight-medium); text-overflow: ellipsis; white-space: nowrap; }
.ad-chip__meta { color: var(--ad-color-text-muted); font-size: var(--ad-font-size-xs); white-space: nowrap; }
/* The word, in a hairline pill. The word carries the meaning, not the color. */
.ad-pill {
  flex: none;
  padding: 0.125rem var(--ad-space-2);
  border: 1px solid var(--ad-color-agent);
  border-radius: var(--ad-radius-full);
  color: var(--ad-color-agent-text);
  font-size: var(--ad-font-size-xs);
  font-weight: var(--ad-font-weight-semibold);
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-transform: uppercase;
}
/* Agent badge: the words, a square avatar, and who the agent acts for. */
.ad-agent-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--ad-space-2);
  max-width: 100%;
  padding: 0.125rem var(--ad-space-2) 0.125rem 0.125rem;
  border: 1px solid var(--ad-color-agent);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-agent-subtle);
  color: var(--ad-color-agent-text);
  font-size: var(--ad-font-size-xs);
}
.ad-agent-badge--compact { padding: 0; border: 0; background: none; }
.ad-agent-badge__label { font-weight: var(--ad-font-weight-semibold); white-space: nowrap; }
.ad-agent-badge__meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Document title: a button that turns into a field. */
.ad-title { display: inline-grid; min-width: 0; max-width: 100%; }
.ad-title__button, .ad-title__input, .ad-title__text {
  min-width: 0;
  padding: var(--ad-space-1) var(--ad-space-2);
  font: inherit;
  font-size: var(--ad-font-size-lg);
  font-weight: var(--ad-font-weight-semibold);
}
.ad-title__button {
  border: 1px solid transparent;
  border-radius: var(--ad-radius-md);
  background: none;
  color: var(--ad-color-text);
  cursor: text;
  text-align: start;
}
.ad-title__button:hover { border-color: var(--ad-color-border-strong); }
.ad-title__text { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ad-title__input {
  width: min(28rem, 100%);
  border: 1px solid var(--ad-color-border-strong);
  border-radius: var(--ad-radius-md);
  background: var(--ad-color-surface-raised);
  color: var(--ad-color-text);
}
.ad-title__input[aria-invalid="true"] { border-color: var(--ad-color-danger-text); }
.ad-title__error { padding-inline: var(--ad-space-2); color: var(--ad-color-danger-text); font-size: var(--ad-font-size-xs); }
.ad-stack { display: inline-flex; align-items: center; gap: var(--ad-space-3); }
.ad-stack__list { display: flex; margin: 0; padding: 0; list-style: none; }
.ad-stack__list li + li { margin-inline-start: -0.25rem; }
.ad-stack__list .ad-avatar { width: 1.75rem; height: 1.75rem; box-shadow: 0 0 0 2px var(--ad-color-bg); }
.ad-stack__summary { color: var(--ad-color-text-muted); font-size: var(--ad-font-size-xs); white-space: nowrap; }

/* Windows High Contrast. Backgrounds become system colors there, so state needs system colors. */
@media (forced-colors: active) {
  .ad-checkbox:checked,
  .ad-switch:checked { background: Highlight; border-color: Highlight; }
  .ad-checkbox::before { background: HighlightText; }
  .ad-switch { background: Canvas; border-color: ButtonText; }
  .ad-switch::before { background: ButtonText; }
  .ad-switch:checked::before { background: HighlightText; }
  .ad-button[aria-busy="true"] { border-style: dashed; }
  .ad-button[aria-pressed="true"] { background: Highlight; color: HighlightText; border-color: Highlight; }
  .ad-tabs__trigger[data-state="active"]::after { background: Highlight; }
  .ad-skeleton { background: GrayText; }
  .ad-filegrid__item { border-color: CanvasText; }
  .ad-agent-badge, .ad-title__button:hover, .ad-title__input { border-color: CanvasText; }
  .ad-agent-badge--compact { border: 0; }
  .ad-menu__item[data-highlighted] { outline: 2px solid Highlight; outline-offset: -2px; }
}

/* Share dialog ------------------------------------------------------- */
.ad-dialog:has(.ad-share) { width: min(36rem, calc(100vw - 2rem)); }
.ad-share { display: grid; gap: var(--ad-space-4); }
.ad-share__invite { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: start; gap: var(--ad-space-3); }
.ad-share__invite .ad-field:first-child { grid-column: 1 / -1; }
.ad-share__invite .ad-button { align-self: end; }
.ad-share__sent { color: var(--ad-color-success-text); font-size: var(--ad-font-size-xs); }
.ad-share__people { display: grid; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ad-color-border); }
.ad-share__people li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ad-space-3);
  padding: var(--ad-space-2) 0;
  border-bottom: 1px solid var(--ad-color-border);
}
.ad-share__people .ad-field { min-width: 9rem; }
.ad-share__controls { display: inline-flex; align-items: center; gap: var(--ad-space-2); }
.ad-share__owner { padding-inline: var(--ad-space-3); color: var(--ad-color-text-muted); }
.ad-share__row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--ad-space-3); }
.ad-share__copy { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: var(--ad-space-3); }
@media (max-width: 30rem) {
  .ad-share__invite, .ad-share__row, .ad-share__copy { grid-template-columns: 1fr; }
}

/* Cursor ------------------------------------------------------------- */
.ad-cursor { position: relative; display: inline-block; width: 0; vertical-align: baseline; user-select: none; }
.ad-cursor__caret { position: absolute; inset-block: -0.2em -0.15em; inset-inline-start: 0; width: 2px; background: var(--ad-color-accent); }
.ad-cursor__tag {
  position: absolute;
  inset-block-end: 1.45em;
  inset-inline-start: 0;
  padding: 0.0625rem var(--ad-space-2);
  border: 1px solid var(--ad-color-accent);
  border-radius: var(--ad-radius-sm) var(--ad-radius-sm) var(--ad-radius-sm) 0;
  background: var(--ad-color-accent);
  color: var(--ad-color-text-on-accent);
  font-size: var(--ad-font-size-xs);
  font-weight: var(--ad-font-weight-medium);
  line-height: 1.3;
  white-space: nowrap;
}
.ad-cursor--agent .ad-cursor__caret { background: var(--ad-color-agent); }
.ad-cursor--agent .ad-cursor__tag { border-color: var(--ad-color-agent); border-radius: var(--ad-radius-sm); background: var(--ad-color-agent-subtle); color: var(--ad-color-agent-text); }