/*
 * Nova Stream — a ten-foot interface.
 *
 * Written for the browsers televisions actually ship: Tizen 5.5 and webOS 5 carry Chromium 68-69.
 * So no :has(), no :is()/:where(), no :focus-visible, no nesting, no logical properties, no
 * clamp()/min()/max(), no aspect-ratio, and no gap inside flex containers (grid gap is fine) —
 * every one of those is younger than that engine and would silently drop the rule.
 *
 * Sizes are in vw/vh rather than px: one stylesheet then reads the same from three metres away on a
 * 55-inch screen and from half a metre on a laptop.
 */

:root {
  --brand: #e50a5c;
  --brand-dim: #8c0937;
  --bg: #07070c;
  --bg-raised: #14141f;
  --bg-card: #1b1b2a;
  --text: #f4f4f8;
  --text-dim: #a0a0b4;
  --focus: #ffffff;
  --line: #3a3a50;
  --ok: #3ddc84;
  --warn: #ffb300;
  --bad: #ff5252;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 1.6vh;
  line-height: 1.45;
  overflow: hidden;
}

.app {
  height: 100%;
  width: 100%;
}

.screen {
  height: 100%;
  width: 100%;
  padding: 4vh 5vw;
}

.screen[hidden] {
  display: none;
}

/* ---------------------------------------------------------------- brand */

.brand {
  color: var(--brand);
  font-weight: 800;
  letter-spacing: 0.35em;
  margin: 0;
  text-transform: uppercase;
}

.brand-xl {
  font-size: 7vh;
}

.brand-l {
  font-size: 5vh;
}

.brand-s {
  font-size: 2.6vh;
}

.tagline {
  color: var(--text-dim);
  font-size: 3vh;
  margin: 2vh 0 6vh 0;
}

.hint {
  color: var(--text-dim);
  font-size: 1.8vh;
  margin: 4vh 0 0 0;
}

/* The splash is read from across the room before anything else, so its lettering is a fifth larger
   than the same classes elsewhere. */
.screen-splash .brand-xl {
  font-size: 8.4vh;
}

.screen-splash .tagline {
  font-size: 3.6vh;
}

.screen-splash .button {
  font-size: 2.9vh;
}

.screen-splash .hint {
  font-size: 2.2vh;
}

.hint-bottom {
  bottom: 2vh;
  left: 5vw;
  margin: 0;
  position: absolute;
}

/* ---------------------------------------------------------------- buttons */

.button {
  background: var(--bg-raised);
  border: 0.4vh solid transparent;
  border-radius: 0.8vh;
  color: var(--text);
  cursor: pointer;
  display: inline-block;
  font-family: inherit;
  font-size: 2.4vh;
  font-weight: 600;
  padding: 1.6vh 4vw;
  text-decoration: none;
}

.button-primary {
  background: var(--brand);
  color: #ffffff;
}

.button-ghost {
  background: transparent;
  border-color: var(--line);
  font-size: 1.9vh;
  padding: 1vh 1.8vw;
}

/* Focus is drawn by a class the script sets, not by :focus-visible: that pseudo-class arrived in
   Chromium 86 and would leave a television with no visible cursor at all. */
.is-focused {
  border-color: var(--focus);
  box-shadow: 0 0 0 0.5vh rgba(255, 255, 255, 0.25);
  outline: none;
}

/* ---------------------------------------------------------------- splash */

.screen-splash {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.splash-inner {
  max-width: 60vw;
}

/* ---------------------------------------------------------------- welcome */

.screen-welcome {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.welcome-inner {
  max-width: 70vw;
  width: 100%;
}

.welcome-kicker {
  color: var(--text-dim);
  font-size: 2.4vh;
  margin: 0 0 1vh 0;
}

.welcome-registered {
  color: var(--text);
  font-size: 2.8vh;
  margin: 4vh 0 0 0;
}

/* Spacing by margin, not by gap: flex gap arrived in Chromium 84, after the televisions' 68-69. */
.welcome-actions .button + .button {
  margin-left: 2vw;
}

.card {
  background: var(--bg-raised);
  border-radius: 1.4vh;
  display: flex;
  align-items: center;
  margin: 3vh auto 5vh auto;
  max-width: 46vw;
  padding: 3vh 3vw;
  text-align: left;
}

.card-avatar {
  flex: 0 0 auto;
  height: 14vh;
  margin-right: 2.5vw;
  width: 14vh;
}

.card-avatar img,
.top-bar-avatar img {
  border-radius: 50%;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.initials {
  align-items: center;
  background: var(--brand-dim);
  border-radius: 50%;
  color: #ffffff;
  display: flex;
  font-weight: 700;
  height: 100%;
  justify-content: center;
  width: 100%;
}

.card-avatar .initials {
  font-size: 5vh;
}

.card-fields {
  flex: 1 1 auto;
  min-width: 0;
}

.field-name {
  font-size: 3.4vh;
  font-weight: 700;
  margin: 0;
}

.field {
  color: var(--text-dim);
  font-size: 2.2vh;
  margin: 0.6vh 0 0 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.field-channel {
  color: var(--brand);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------------------------------------------------------------- catalogue */

.screen-catalog {
  display: block;
  overflow-y: auto;
  position: relative;
  /* The grid still scrolls — the remote moves the focus and the focused tile is scrolled into
     view — but no scrollbar is drawn: a television has no pointer to drag it with. */
  scrollbar-width: none;
}

.screen-catalog::-webkit-scrollbar {
  display: none;
}

.top-bar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 4vh;
}

.top-bar-right {
  align-items: center;
  display: flex;
}

.viewer {
  color: var(--text-dim);
  font-size: 2vh;
  margin-right: 1.2vw;
}

.viewer-traits {
  font-size: 1.7vh;
}

.viewer-traits:empty {
  display: none;
}

.top-bar-avatar {
  height: 4.6vh;
  margin-right: 1.2vw;
  width: 4.6vh;
}

.top-bar-avatar .initials {
  font-size: 1.8vh;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 3vh 2vw;
  padding-bottom: 8vh;
}

/* CSS grid reached Chromium in 57; older television engines (webOS 4.x runs 53) lay the tiles out
   by floats instead. Four to a row either way, so the arrow keys meet the same geometry. */
@supports not (display: grid) {
  .grid {
    overflow: hidden;
  }

  .grid > .tile {
    float: left;
    margin: 0 2% 3vh 0;
    width: 23%;
  }
}

.tile {
  background: var(--bg-card);
  border: 0.4vh solid transparent;
  border-radius: 1.2vh;
  overflow: hidden;
  padding: 0;
  /* The frame the "For you" badge is placed against. */
  position: relative;
}

/* Laid over the corner of the cover rather than into the body: a tile with the badge then keeps the
   height of a tile without one, and the row of buttons stays level. */
.tile-badge {
  background: var(--brand);
  border-radius: 0.6vh;
  color: #ffffff;
  font-size: 1.6vh;
  font-weight: 700;
  left: 0.8vw;
  padding: 0.3vh 0.7vw;
  position: absolute;
  top: 1.2vh;
}

.tile-cover {
  display: block;
  height: 22vh;
  width: 100%;
}

.tile-cover svg {
  display: block;
  height: 100%;
  width: 100%;
}

.tile-body {
  padding: 1.6vh 1.2vw;
}

.tile-title {
  font-size: 2.2vh;
  font-weight: 700;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tile-meta {
  color: var(--text-dim);
  font-size: 1.7vh;
  margin: 0.4vh 0 1.4vh 0;
}

.tile-buy {
  background: var(--brand);
  border: 0.4vh solid transparent;
  border-radius: 0.8vh;
  color: #ffffff;
  cursor: pointer;
  display: block;
  font-family: inherit;
  font-size: 2vh;
  font-weight: 700;
  padding: 1.1vh 0;
  width: 100%;
}

/* The control of a title the viewer's age closes: the size and place of the buy button, so the grid
   and the remote meet the same geometry, but drawn as something that is not for sale. */
.tile-locked {
  background: transparent;
  border: 0.4vh solid var(--line);
  border-radius: 0.8vh;
  color: var(--text-dim);
  cursor: pointer;
  display: block;
  font-family: inherit;
  font-size: 2vh;
  font-weight: 700;
  padding: 1.1vh 0;
  width: 100%;
}

.tile-owned {
  color: var(--ok);
  display: block;
  font-size: 2vh;
  font-weight: 700;
  padding: 1.1vh 0;
  text-align: center;
}

/* ---------------------------------------------------------------- purchase modal */

.modal {
  background: rgba(3, 3, 8, 0.86);
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  left: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 10;
}

.modal[hidden] {
  display: none;
}

.modal-box {
  background: var(--bg-raised);
  border-radius: 1.6vh;
  max-width: 64vw;
  padding: 4vh 3vw;
  width: 100%;
}

.modal-title {
  font-size: 3.2vh;
  font-weight: 700;
  margin: 0 0 3vh 0;
}

.modal-body {
  display: flex;
  align-items: center;
}

.modal-qr {
  background: #ffffff;
  border-radius: 1vh;
  flex: 0 0 auto;
  height: 28vh;
  margin-right: 2.5vw;
  padding: 1vh;
  width: 28vh;
}

/* A window with no code to scan — a title closed by age — drops the white square altogether. */
.modal-qr[hidden] {
  display: none;
}

.modal-qr img {
  height: 100%;
  image-rendering: auto;
  width: 100%;
}

.modal-qr-empty {
  align-items: center;
  color: #444444;
  display: flex;
  font-size: 1.8vh;
  height: 100%;
  justify-content: center;
  text-align: center;
}

.modal-copy {
  flex: 1 1 auto;
  min-width: 0;
}

.modal-status {
  font-size: 2.4vh;
  margin: 0 0 1.5vh 0;
}

.modal-status.is-ok {
  color: var(--ok);
}

.modal-status.is-warn {
  color: var(--warn);
}

.modal-status.is-bad {
  color: var(--bad);
}

.modal-actions {
  margin-top: 3vh;
  text-align: right;
}

.modal-actions .button {
  margin-left: 1.5vw;
}