/* ---- QR student page (play.html) ------------------------------------------
   Self-contained on purpose: styles.css (163 KB) is the teacher site and is
   NOT loaded here. Tokens below mirror styles.css :root and the per-level
   table in DESIGN.md — keep the values in sync if those change. */

:root {
  --macaw-blue: #1cb0f6;
  --macaw-blue-shadow: #1899d6;
  --deep-blue: #2b70c9;
  --canvas: #ffffff;
  --ink: #3c3c3c;
  --radius-control: 16px;
  --radius-card: 18px;
  --font-display: "Fredoka", "Nunito", "Segoe UI", sans-serif;
  --font-ui: "Nunito", "Segoe UI", "Noto Sans", Arial, sans-serif;
}

/* Per-level colors (DESIGN.md "Per-level theme system"). Beginner = L1. */
body {
  --level-accent: #ffc800;
  --level-accent-shadow: #d49a00;
  --level-accent-soft: #fff3cc;
  --content-day-bg: #ffd43b;
  --content-day-shadow: #c78f00;
  --content-day-text: #8a6400;
  --content-week-tint: #ffe9a8;
}

body[data-level="Level 2"] {
  --level-accent: #ff4b4b;
  --level-accent-shadow: #d83434;
  --level-accent-soft: #ffe8e8;
  --content-day-bg: #ff7676;
  --content-day-shadow: #e85555;
  --content-day-text: #a83838;
  --content-week-tint: #ffcfcf;
}

body[data-level="Level 3"] {
  --level-accent: #1cb0f6;
  --level-accent-shadow: #1899d6;
  --level-accent-soft: #e8f6ff;
  --content-day-bg: #45c0f7;
  --content-day-shadow: #2aa6e3;
  --content-day-text: #135f95;
  --content-week-tint: #c6e7ff;
}

body[data-level="Level 4"] {
  --level-accent: #ce82ff;
  --level-accent-shadow: #9f55d8;
  --level-accent-soft: #f4e3ff;
  --content-day-bg: #da99ff;
  --content-day-shadow: #ad6ce0;
  --content-day-text: #71399f;
  --content-week-tint: #e6c9ff;
}

/* Site-wide hard rule: no italics anywhere. */
*,
*::before,
*::after {
  box-sizing: border-box;
  font-style: normal !important;
  font-synthesis: none;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
}

body {
  background: var(--level-accent-soft);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-text-size-adjust: 100%;
}

button {
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

.play {
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 760px;
  margin: 0 auto;
  padding: 16px 16px 32px;
}

/* (A) solo mode: the player + title block sits in the vertical middle of the
   screen; the header stays on top. */
.play[data-solo] {
  display: flex;
  flex-direction: column;
}

.play[data-solo] .play-player {
  margin: auto 0;
}

/* Spacer that mirrors what is above the block (padding-top 16 + header 52 +
   its margin 14 = 82 = padding-bottom 32 + 50), so the block is centered on
   the whole screen rather than on the space under the header. */
.play[data-solo]::after {
  content: "";
  flex: none;
  height: 50px;
}

/* ---- Header: level name + month badge (like the content page banner) --- */
.play-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 52px;
  margin-bottom: 14px;
}

.play-level {
  font-family: "Sniglet", var(--font-display);
  font-weight: 800;
  font-size: 32px;
  line-height: 1;
  color: var(--level-accent-shadow);
}

.play-month:empty,
.play-level:empty {
  display: none;
}

.play-month {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--level-accent);
  color: var(--canvas);
  font-family: "Manrope", var(--font-display);
  font-weight: 800;
  font-size: 26px;
  line-height: 1;
}

/* ---- Player stage -------------------------------------------------------- */
.play-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: linear-gradient(
    160deg,
    var(--content-day-bg),
    var(--level-accent)
  );
  box-shadow: 0 7px 0 var(--content-day-shadow);
  /* Own layer so the rounded clip also cuts the cross-origin iframe
     (NOTES.md "Rounded-corner dark seam"). */
  transform: translateZ(0);
}

.play[data-state="playing"] .play-stage,
.play[data-state="ended"] .play-stage {
  background: #000;
}

.play-frame,
.play-frame > div {
  position: absolute;
  inset: 0;
}

/* Square iframe overscanned 1px past the rounded clip (no dark seam). */
.play-frame iframe {
  position: absolute;
  top: -1px;
  left: -1px;
  width: calc(100% + 2px);
  height: calc(100% + 2px);
  border: 0;
}

.play-click-layer {
  position: absolute;
  inset: 0;
  z-index: 2;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.play-start {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  display: grid;
  place-items: center;
  width: 104px;
  height: 104px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--canvas);
  color: var(--level-accent-shadow);
  box-shadow:
    0 7px 0 var(--content-day-shadow),
    0 12px 24px rgba(0, 0, 0, 0.18);
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: transform 0.12s ease;
}

.play-start:active {
  transform: translate(-50%, calc(-50% + 4px));
}

.play-start svg {
  width: 56px;
  height: 56px;
  margin-left: 6px; /* optical centering of the triangle */
  fill: currentColor;
}

.play-start:focus-visible,
.play-btn:focus-visible {
  outline: 3px solid var(--deep-blue);
  outline-offset: 3px;
}

/* ---- Message card (empty / error / invalid / game) ----------------------
   Shown in place of the 16:9 stage, which is too short for an emoji + title
   + text + 56px button on a phone, so the stage grows to fit it. */
.play[data-card] .play-stage {
  aspect-ratio: auto;
  min-height: 220px;
  background: var(--canvas);
}

/* The (empty) absolute frame would otherwise sit over the in-flow card and
   swallow taps on its buttons. */
.play[data-card] .play-frame {
  display: none;
}

.play-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 220px;
  padding: 24px 20px;
  text-align: center;
}

.play-card-emoji {
  font-size: 52px;
  line-height: 1;
}

.play-card-title {
  margin: 0;
  font-family: "Sniglet", var(--font-display);
  font-weight: 800;
  font-size: 26px;
  line-height: 1.15;
  color: var(--macaw-blue);
}

.play-card-text {
  margin: 0;
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.play-card-title:empty,
.play-card-text:empty {
  display: none;
}

.play-btn {
  min-width: 160px;
  min-height: 56px;
  margin-top: 6px;
  padding: 12px 28px;
  border: 0;
  border-radius: 999px;
  background: var(--macaw-blue);
  color: var(--canvas);
  font-weight: 800;
  font-size: 19px;
  box-shadow: 0 5px 0 var(--macaw-blue-shadow);
  cursor: pointer;
}

.play-btn:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0 var(--macaw-blue-shadow);
}

.play-title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.25;
  text-align: center;
  color: var(--content-day-text);
}

.play-title:empty {
  display: none;
}

/* ---- End of video overlay + Next ---------------------------------------- */
.play-end {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 16px;
  background: rgba(28, 28, 28, 0.62);
}

.play-btn-light {
  background: var(--canvas);
  color: var(--content-day-text);
  box-shadow: 0 5px 0 #dadada;
}

.play-btn-light:active {
  box-shadow: 0 2px 0 #dadada;
}

.play-btn svg,
.play-next-inline svg {
  width: 18px;
  height: 18px;
  margin-left: 4px;
  vertical-align: -2px;
  fill: currentColor;
}

.play-next-row {
  display: flex;
  justify-content: center;
}

.play-next-inline {
  min-height: 56px;
  margin-top: 10px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  background: var(--canvas);
  color: var(--content-day-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 0 var(--content-day-shadow);
  cursor: pointer;
}

.play-next-inline:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--content-day-shadow);
}

/* ---- (B) This month's list ---------------------------------------------- */
.play-list {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 2px dashed var(--content-week-tint);
}

.play-list-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.play-week-row {
  display: grid;
  grid-template-columns: 34px repeat(5, minmax(0, 1fr));
  gap: 6px;
  margin-top: 10px;
}

.play-week {
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--content-week-tint);
  color: var(--content-day-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
}

.play-week-word {
  display: none;
}

.play-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 56px;
  padding: 6px 4px;
  border: 0;
  border-radius: var(--radius-control);
  background: var(--content-day-bg);
  color: var(--content-day-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.1;
  box-shadow: 0 5px 0 var(--content-day-shadow);
  cursor: pointer;
}

.play-item-tool {
  padding: 8px 10px;
  background: var(--canvas);
  font-size: 16px;
  box-shadow: 0 4px 0 #dadada;
}

.play-item:active {
  transform: translateY(3px);
}

.play-item:focus-visible,
.play-next-inline:focus-visible {
  outline: 3px solid var(--deep-blue);
  outline-offset: 3px;
}

/* Not ready yet: flat and faded, still tappable (shows Coming soon). */
.play-item.is-empty {
  background: var(--content-week-tint);
  color: var(--content-day-text);
  box-shadow: none;
  opacity: 0.6;
}

.play-soon {
  margin-top: 2px;
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* What is on the player right now: thick ring + play mark. */
.play-item[aria-current="true"] {
  opacity: 1;
  outline: 4px solid var(--content-day-text);
  outline-offset: 2px;
}

/* Corner badge, so the label ("Mon") keeps its single line. */
.play-item[aria-current="true"]::after {
  content: "▶";
  position: absolute;
  top: -9px;
  right: -9px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  padding-left: 2px;
  border-radius: 50%;
  background: var(--content-day-text);
  color: var(--canvas);
  font-family: var(--font-ui);
  font-size: 11px;
  line-height: 1;
}

@media (min-width: 480px) {
  .play-week-row {
    grid-template-columns: 64px repeat(5, minmax(0, 1fr));
    gap: 8px;
  }

  .play-week-word {
    display: inline;
    font-size: 14px;
  }

  .play-item {
    min-height: 64px;
    font-size: 20px;
  }

  .play-item-tool {
    font-size: 18px;
  }
}

/* ---- Full screen (⛶ enter / ✕ exit) --------------------------------------
   play.js sets .play[data-fullscreen] = "native" (Fullscreen API on the
   stage) or "pseudo" (+ body.play-fullscreen; iPhone Safari has no element
   Fullscreen API). Keyed on attributes, not :fullscreen, so one rule serves
   both and an old browser can't drop it as an unknown selector. */
.play-fs {
  position: absolute;
  z-index: 5; /* over the tap layer (2) and the end overlay (4) */
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: var(--canvas);
  cursor: pointer;
}

.play-fs svg {
  width: 28px;
  height: 28px;
}

.play-fs:focus-visible {
  outline: 3px solid var(--canvas);
  outline-offset: 2px;
}

.play-fs-enter {
  right: 10px;
  bottom: 10px;
}

.play-fs-exit {
  top: 12px;
  right: 12px;
}

/* The stage is the whole screen, black; the picture is the largest 16:9 box
   in its middle (bars at the sides sideways, above/below upright). */
.play[data-fullscreen] .play-stage {
  border-radius: 0;
  box-shadow: none;
  background: #000;
}

.play[data-fullscreen] .play-frame {
  inset: auto;
  top: 50%;
  left: 50%;
  width: min(100vw, calc(100vh * 16 / 9));
  width: min(100vw, calc(100dvh * 16 / 9));
  aspect-ratio: 16 / 9;
  transform: translate(-50%, -50%);
}

body.play-fullscreen {
  overflow: hidden; /* scroll lock */
  background: #000;
}

body.play-fullscreen .play-stage {
  position: fixed;
  inset: 0;
  z-index: 2147483647;
  width: auto;
  aspect-ratio: auto;
}

body.play-fullscreen .play-header,
body.play-fullscreen .play-title,
body.play-fullscreen .play-next-row,
body.play-fullscreen .play-list {
  display: none;
}

/* ---- Phone turned sideways: the video fills the screen ------------------
   Rotating alone already gives a big picture (no ⛶ tap needed). Only while
   a video is on screen. */
@media (orientation: landscape) and (max-height: 500px) {
  .play[data-state="playing"],
  .play[data-state="ended"] {
    max-width: none;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 0;
    display: grid;
    place-items: center;
    background: #000;
  }

  .play[data-state="playing"] .play-header,
  .play[data-state="playing"] .play-title,
  .play[data-state="playing"] .play-next-row,
  .play[data-state="playing"] .play-list,
  .play[data-state="ended"] .play-header,
  .play[data-state="ended"] .play-title,
  .play[data-state="ended"] .play-next-row,
  .play[data-state="ended"] .play-list {
    display: none;
  }

  .play[data-state="playing"] .play-player,
  .play[data-state="ended"] .play-player {
    width: min(100vw, calc(100dvh * 16 / 9));
  }

  .play[data-state="playing"] .play-stage,
  .play[data-state="ended"] .play-stage {
    border-radius: 0;
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .play-start {
    transition: none;
  }
}