/* ux.rec.ooo — AI interface observation panel
   Demo export: 1280×800, 16:10, mp4, 10–15s, under 8MB (alt 960×600). */

:root {
  --rec-bg: #f7f7f7;
  --rec-card-bg: #f2f2f2;
  --rec-card-bg-hover: #eaeaea;
  --rec-card-bg-active: #e8e8e8;
  --rec-display-gutter: #e6e6e6;
  --rec-border: #2a2a2a;
  --rec-text-primary: #111111;
  --rec-text-statement: #2c2c2c;
  --rec-text-secondary: #666666;
  --rec-text-tertiary: #9a9a9a;
  --rec-text-label: #888888;
  --rec-corner-muted: #777777;
  --rec-corner-hover: #444444;
  --rec-signal: #b31818;
  --rec-signal-ring: #5c1010;
  --rec-radius-card: 12px;
  --rec-radius-panel: 6px;
  --rec-pad-page: 32px;
  --rec-hero-pad: 32px;
  --rec-root-max: 1200px;
  --rec-foot-h: 24px;
  --rec-chrome-top: calc(var(--rec-hero-pad) + 4.75rem);
  --rec-chrome-bottom: calc(var(--rec-pad-page) + var(--rec-foot-h) + env(safe-area-inset-bottom, 0px));
  --rec-gap-cards: 36px;
  --rec-col-gap: 40px;
  --rec-card-pad: 0;
  --rec-card-pad-bottom-open: 22px;
  --rec-card-pad-x: 2px;
  --rec-corner-inset: 2px;
  --rec-display-pad: 6px;
  --rec-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --rec-foot-bg: #2c2c2c;
  --rec-foot-fg: #d0d0d0;
}

body[data-theme="dark"] {
  --rec-bg: #111111;
  --rec-card-bg: #171717;
  --rec-card-bg-hover: #202020;
  --rec-card-bg-active: #232323;
  --rec-display-gutter: #181818;
  --rec-border: #9a9a9a;
  --rec-text-primary: #f2f2f2;
  --rec-text-statement: #e8e8e8;
  --rec-text-secondary: #b7b7b7;
  --rec-text-tertiary: #9a9a9a;
  --rec-text-label: #8d8d8d;
  --rec-corner-muted: #c7c7c7;
  --rec-corner-hover: #ffffff;
  --rec-foot-bg: #000000;
  --rec-foot-fg: #bdbdbd;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: clip;
  background: var(--rec-bg);
  color: var(--rec-text-primary);
  font-family: var(--rec-font);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
}

.rec-hero {
  position: fixed;
  top: var(--rec-hero-pad);
  left: var(--rec-hero-pad);
  z-index: 40;
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  max-width: min(calc(100vw - var(--rec-hero-pad) * 2), 34rem);
  font-family: var(--rec-font);
}

.rec-hero__link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.rec-hero__link:focus-visible {
  outline: 1px solid var(--rec-text-primary);
  outline-offset: 2px;
}

.rec-util {
  position: fixed;
  top: 2px;
  left: auto;
  right: 2px;
  bottom: auto;
  z-index: 45;
}

.rec-util__btn {
  border: none;
  background: transparent;
  color: var(--rec-text-label);
  font-family: var(--rec-font);
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
  line-height: 1;
  padding: 0;
  border-radius: 0;
  cursor: pointer;
}

.rec-util__btn:hover,
.rec-util__btn[aria-pressed="true"] {
  color: var(--rec-text-primary);
}

.rec-util__btn:focus-visible {
  outline: 1px solid var(--rec-text-primary);
  outline-offset: 2px;
}

.rec-hero__title {
  margin: 0 0 2px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--rec-text-primary);
}

.rec-hero__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 1.25rem;
}

.rec-hero__tagline {
  margin: 0;
  flex: 1 1 12rem;
  min-width: 0;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--rec-text-secondary);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.rec-hero__product {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rec-text-label);
}

.rec-root {
  min-height: 100vh;
  max-width: var(--rec-root-max);
  min-width: 0;
  margin: 0 auto;
  padding: var(--rec-chrome-top) var(--rec-pad-page) var(--rec-chrome-bottom);
  display: flex;
  flex-direction: column;
}

.rec-layout {
  display: grid;
  grid-template-columns: 3fr 7fr;
  gap: var(--rec-col-gap);
  align-items: start;
  min-width: 0;
  flex: 1;
}

/* Dock wrapper: grid sees rail + stage only (below 1140px). */
.rec-dock {
  display: contents;
}

.rec-dock__backdrop {
  display: none;
}

.rec-rail {
  display: flex;
  flex-direction: column;
  gap: var(--rec-gap-cards);
  align-items: stretch;
}

.rec-empty {
  margin: 0;
  padding: 1rem 0;
  font-size: 13px;
  color: var(--rec-text-secondary);
}

/* Editorial case rail — no card chrome; controls bottom-right */
.rec-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-self: stretch;
  width: 100%;
  border: none;
  border-radius: 0;
  background: transparent;
  padding: 0 var(--rec-card-pad-x);
  padding-bottom: var(--rec-card-pad-bottom-open);
  text-align: left;
  font-family: var(--rec-font);
  color: var(--rec-text-primary);
  cursor: default;
  outline: none;
  transition: none;
}

.rec-card[data-collapsed="true"] {
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-bottom: 0.35rem;
  min-height: 0;
}

.rec-card[data-collapsed="true"] .rec-card__stack {
  display: none;
}

.rec-card[data-collapsed="true"] .rec-card__title {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.01em;
  text-align: left;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rec-card[data-playing="true"] {
  border-left: 1px solid var(--rec-text-primary);
  padding-left: 0.6rem;
  margin-left: calc(-1 * 0.6rem - 1px);
}

.rec-card[data-playing="true"] .rec-card__title {
  color: var(--rec-text-primary);
}

.rec-card[data-playing="true"] .rec-card__statement {
  opacity: 0.92;
}

.rec-card__title {
  margin: 0 0 8px;
  padding-right: 3.25rem;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--rec-text-primary);
}

.rec-card[data-collapsed="true"] .rec-card__title {
  padding-right: 0;
}

.rec-card__stack {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.rec-card__statement {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  max-width: 420px;
  color: var(--rec-text-statement);
}

.rec-card__summary {
  margin: 0;
  font-size: 11.5px;
  font-weight: 400;
  line-height: 1.55;
  max-width: 420px;
  color: var(--rec-text-tertiary);
}

.rec-card__detail {
  flex-shrink: 0;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--rec-border);
  max-width: 420px;
}

.rec-card__detail-sect + .rec-card__detail-sect {
  margin-top: 0.75rem;
}

.rec-card__detail-label {
  margin: 0 0 0.2rem;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--rec-text-label);
}

.rec-card__detail-text {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--rec-text-secondary);
}

.rec-card__meta {
  flex-shrink: 0;
  margin-top: 12px;
  padding-right: 1.5rem;
}

.rec-card__roles {
  margin: 0;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.45;
  color: var(--rec-text-label);
  max-width: 420px;
  letter-spacing: 0.02em;
}

.rec-card__ctx {
  margin: 4px 0 0;
  font-size: 12px;
  font-weight: 400;
  color: var(--rec-text-label);
  letter-spacing: 0.03em;
}

.rec-card__controls {
  position: absolute;
  right: var(--rec-corner-inset);
  bottom: 0;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 0.2rem;
  z-index: 2;
}

.rec-card[data-collapsed="true"] .rec-card__controls {
  position: static;
  flex-shrink: 0;
  margin-left: auto;
}

.rec-card__toggle,
.rec-card__play {
  width: auto;
  min-width: 1.1rem;
  min-height: 1.1rem;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--rec-corner-muted);
  font-family: var(--rec-font);
  font-size: 13px;
  line-height: 1;
  font-weight: 500;
  cursor: pointer;
  box-shadow: none;
}

.rec-card__toggle:hover,
.rec-card__play:hover {
  color: var(--rec-corner-hover);
}

.rec-card__toggle:focus,
.rec-card__play:focus {
  outline: none;
}

.rec-card__toggle:focus-visible,
.rec-card__play:focus-visible {
  outline: 1px solid var(--rec-corner-hover);
  outline-offset: 2px;
}

.rec-stage {
  position: sticky;
  top: var(--rec-chrome-top);
  width: 100%;
  min-width: 0;
}

.rec-display {
  position: relative;
  width: 100%;
  min-width: 0;
  --rec-monitor-ratio: 16 / 10;
  --rec-monitor-max-width: 100%;
  border: 1px solid var(--rec-border);
  border-radius: var(--rec-radius-panel);
  background: var(--rec-display-gutter);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.rec-display[data-idle="true"] {
  cursor: default;
}

.rec-display[data-idle="false"] {
  cursor: pointer;
}

.rec-display:focus {
  outline: none;
}

.rec-display:focus-visible {
  outline: 1px solid var(--rec-text-primary);
  outline-offset: 3px;
}

/* Monitor live indicator — not a control */
.rec-display__signal {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 4;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--rec-signal);
  border: 1px solid var(--rec-signal-ring);
  box-shadow: none;
  pointer-events: none;
}

.rec-display__viewport {
  padding: var(--rec-display-pad);
  width: 100%;
  min-width: 0;
  background: var(--rec-display-gutter);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.rec-display__inner {
  /* Ratio & width driven by JS from video metadata (--rec-* on .rec-display) */
  width: min(100%, var(--rec-monitor-max-width, 100%));
  max-width: 100%;
  margin: 0 auto;
  aspect-ratio: var(--rec-monitor-ratio, 16 / 10);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000000;
  min-height: 0;
}

/* Fill ratio box */
.rec-display__video,
.rec-display__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  background: #000000;
  min-width: 0;
  min-height: 0;
}

/* Base portrait monitor variant: narrow shell + full inner */
.rec-display[data-orientation="portrait"] {
  width: min(36vw, 351px);
  margin-inline: auto;
  background: transparent;
  border-color: transparent;
  overflow: visible;
}

.rec-display[data-orientation="portrait"] .rec-display__viewport {
  padding: 0;
  background: transparent;
}

.rec-display[data-orientation="portrait"] .rec-display__inner {
  width: 100%;
  max-width: 100%;
  margin-inline: auto;
  border: 1px solid var(--rec-border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.08);
}

.rec-display[data-orientation="portrait"] .rec-display__video,
.rec-display[data-orientation="portrait"] .rec-display__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.rec-display[data-orientation="portrait"] .rec-display__caption {
  margin-top: 2px;
}

.rec-display[data-orientation="landscape"] .rec-display__inner {
  max-width: 100%;
}

.rec-display__video[hidden] {
  display: none !important;
}

.rec-display__image[hidden] {
  display: none !important;
}

.rec-display__placeholder {
  padding: 1.5rem;
  text-align: center;
  max-width: 22rem;
}

.rec-display__placeholder[hidden] {
  display: none;
}

.rec-display__placeholder-text {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: #aaaaaa;
}

.rec-display__caption {
  flex-shrink: 0;
  height: 20px;
  min-height: 20px;
  padding: 0 10px 0 8px;
  border-top: 1px solid var(--rec-border);
  display: flex;
  align-items: center;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--rec-text-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--rec-display-gutter);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rec-foot {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  box-sizing: border-box;
  min-height: calc(var(--rec-foot-h) + env(safe-area-inset-bottom, 0px));
  margin: 0;
  padding: 0 0.75rem env(safe-area-inset-bottom, 0px);
  background: var(--rec-foot-bg);
  color: var(--rec-foot-fg);
  border: none;
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--rec-font);
}

.rec-foot__inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.rec-foot__item {
  color: inherit;
  text-decoration: none;
  flex-shrink: 0;
}

.rec-foot__item:focus-visible {
  outline: 1px solid var(--rec-foot-fg);
  outline-offset: 2px;
}

.rec-foot__dot {
  flex-shrink: 0;
  opacity: 0.65;
  user-select: none;
}

@media (max-width: 1139px) {
  :root {
    --rec-col-gap: 22px;
    --rec-gap-cards: 22px;
  }

  .rec-layout {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .rec-stage {
    position: sticky;
    top: calc(var(--rec-hero-pad) + 3.25rem);
    order: -1;
    z-index: 24;
    width: 100%;
    min-width: 0;
    margin: 0 auto 16px;
    padding-bottom: 8px;
    background: transparent;
  }

  /* Shrink shell first (not only inner) */
  .rec-display {
    width: min(78vw, 760px);
    margin-inline: auto;
  }

  .rec-display__viewport {
    width: 100%;
    min-width: 0;
    padding: 6px;
  }

  .rec-display__inner {
    width: 100%;
    max-width: 100%;
    margin-inline: auto;
    aspect-ratio: var(--rec-monitor-ratio, 16 / 10);
  }

  .rec-display[data-orientation="landscape"] .rec-display__inner {
    width: 100%;
    max-width: 100%;
  }

  .rec-display[data-orientation="portrait"] {
    width: min(48vw, 340px);
    margin-inline: auto;
  }

  .rec-display[data-orientation="portrait"] .rec-display__inner {
    width: 100%;
    max-width: 100%;
  }

  .rec-rail {
    margin-top: 8px;
  }

  .rec-card[data-collapsed="true"] {
    flex-wrap: wrap;
    row-gap: 0.25rem;
  }

  .rec-card[data-collapsed="true"] .rec-card__controls {
    width: 100%;
    justify-content: flex-end;
    margin-left: 0;
  }

  .rec-card__controls {
    gap: 0.15rem;
  }

  /*
   * Mobile + portrait video only: corner mini preview + tap to expand (backdrop).
   * Desktop never sets data-dock-float; landscape mobile keeps inline sticky preview above.
   * No transitions; .rec-display keeps the standard panel border/radius from base rules.
   */
  .rec-dock[data-dock-float="true"] {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 42;
    pointer-events: none;
  }

  .rec-dock[data-dock-float="true"] .rec-dock__backdrop {
    display: block;
    position: absolute;
    inset: 0;
    z-index: 1;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 0;
    background: rgb(0 0 0 / 0.26);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: none;
  }

  .rec-dock[data-dock-float="true"][data-expanded="true"] .rec-dock__backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .rec-dock[data-dock-float="true"] .rec-stage {
    position: absolute;
    z-index: 2;
    top: calc(var(--rec-chrome-top) + 0.35rem);
    right: 12px;
    left: auto;
    width: 118px;
    max-width: min(118px, 28vw);
    min-width: 0;
    margin: 0 auto;
    margin-bottom: 0;
    padding: 0;
    padding-bottom: 0;
    pointer-events: auto;
    box-shadow: none;
    background: transparent;
    order: unset;
    transition: none;
  }

  .rec-dock[data-dock-float="true"][data-expanded="true"] .rec-stage {
    top: 50%;
    left: 50%;
    right: auto;
    width: min(88vw, 380px);
    max-width: min(88vw, 380px);
    transform: translate(-50%, -50%);
    transition: none;
  }

  .rec-dock[data-dock-float="true"]:not([data-expanded="true"]) .rec-display[data-orientation="portrait"] {
    width: 100%;
    max-width: 100%;
    margin-inline: 0;
  }

  .rec-dock[data-dock-float="true"]:not([data-expanded="true"]) .rec-display__caption {
    display: none;
  }

  .rec-dock[data-dock-float="true"]:not([data-expanded="true"]) .rec-display__viewport {
    padding: 3px;
  }

  .rec-dock[data-dock-float="true"]:not([data-expanded="true"]) .rec-display__placeholder {
    padding: 0.5rem;
    max-width: none;
  }

  .rec-dock[data-dock-float="true"]:not([data-expanded="true"]) .rec-display__placeholder-text {
    font-size: 9px;
    line-height: 1.35;
  }

  .rec-foot__inner {
    white-space: normal;
    text-align: center;
    line-height: 1.35;
  }
}

@media (max-width: 768px) {
  :root {
    --rec-pad-page: 18px;
    --rec-col-gap: 16px;
    --rec-gap-cards: 16px;
    --rec-chrome-top: calc(var(--rec-hero-pad) + 2.2rem);
  }

  .rec-root {
    padding-left: var(--rec-pad-page);
    padding-right: var(--rec-pad-page);
  }

  .rec-hero {
    top: 2px;
    left: 2px;
    right: 2px;
    max-width: none;
  }

  .rec-util {
    top: 16px;
    right: 2px;
    left: auto;
    bottom: auto;
  }

  .rec-hero__link {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: nowrap;
    min-width: 0;
  }

  .rec-hero__title {
    margin: 0;
    font-size: 0.78rem;
    line-height: 1.2;
    white-space: nowrap;
    flex: 0 0 auto;
  }

  .rec-hero__row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: nowrap;
    gap: 6px;
    min-width: 0;
    flex: 1 1 auto;
  }

  .rec-hero__tagline {
    font-size: 0.63rem;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1 1 auto;
  }

  .rec-hero__product {
    margin-left: 0;
    font-size: 0.5rem;
    letter-spacing: 0.1em;
    flex: 0 0 auto;
    white-space: nowrap;
  }

  .rec-stage {
    top: calc(var(--rec-hero-pad) + 1.7rem);
    margin-bottom: 10px;
  }

  .rec-display {
    width: min(88vw, 520px);
  }

  .rec-display__viewport {
    padding: 6px;
  }

  .rec-display[data-orientation="landscape"] .rec-display__inner {
    width: 100%;
    max-width: 100%;
  }

  .rec-display[data-orientation="portrait"] {
    width: min(54vw, 280px);
  }

  .rec-display[data-orientation="portrait"] .rec-display__inner {
    width: 100%;
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --rec-pad-page: 12px;
    --rec-chrome-top: calc(var(--rec-hero-pad) + 2rem);
  }

  .rec-stage {
    top: calc(var(--rec-hero-pad) + 1.5rem);
  }

  .rec-util {
    top: 15px;
    right: 2px;
  }

  .rec-display {
    width: min(92vw, 440px);
  }

  .rec-display[data-orientation="portrait"] .rec-display__inner {
    width: 100%;
    max-width: 100%;
  }

  .rec-display[data-orientation="portrait"] {
    width: min(58vw, 250px);
  }
}