:root {
  --color-esge-blue: #111d54;
  --color-esge-gold: #f4ca17;
  --color-background: #f4f4f1;
  --color-surface: #ffffff;
  --color-surface-soft: #e9e9e4;
  --color-text: #20211f;
  --color-muted: #6f716c;
  --color-accent: var(--color-esge-blue);
  --color-accent-text: #ffffff;
  --color-focus: var(--color-esge-gold);
  --color-selected: #e5ebf7;
  --shadow-card: 0 0.75rem 2rem rgb(25 27 24 / 7%);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;

  --radius-small: 0.75rem;
  --radius-medium: 1.25rem;
  --radius-large: 1.75rem;
  --transition-fast: 160ms ease;
  --transition-standard: 240ms ease;
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--color-background);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow: hidden;
  background: var(--color-background);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { color: inherit; font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }

img,
a { -webkit-user-drag: none; }

button:focus-visible { outline: 0.25rem solid var(--color-focus); outline-offset: 0.2rem; }

.app-shell {
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  user-select: none;
}

.attract-screen {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  padding: clamp(1.5rem, 5vw, 6rem);
  overflow: hidden;
  border: 0;
  background: var(--color-esge-blue);
  color: #ffffff;
  cursor: pointer;
  text-align: center;
  touch-action: manipulation;
  animation: attract-screen-in var(--transition-standard) both;
}
.attract-screen__content { display: grid; width: min(100%, 124rem); justify-items: center; gap: clamp(1.25rem, 3vw, 3rem); }
.attract-screen__banner { display: block; width: 100%; max-height: min(52vh, 34rem); object-fit: contain; filter: drop-shadow(0 1.25rem 2.5rem rgb(0 0 0 / 25%)); }
.attract-screen__invitation { font-size: clamp(1.4rem, 2.5vw, 3rem); font-weight: 750; letter-spacing: 0.13em; text-transform: uppercase; }
.attract-screen__label { color: var(--color-esge-gold); font-size: clamp(1rem, 1.35vw, 1.45rem); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.attract-screen:active { background: #0d1747; }

@keyframes attract-screen-in { from { opacity: 0; } to { opacity: 1; } }

.app-loading,
.app-error {
  display: grid;
  min-height: 100vh;
  min-height: 100dvh;
  place-items: center;
  padding: var(--space-5);
  color: var(--color-muted);
  font-size: clamp(1.3rem, 1.8vw, 2rem);
}

.app-error > div { max-width: 42rem; text-align: center; }
.app-error h1 { margin: 0 0 var(--space-2); color: var(--color-text); font-size: clamp(2rem, 3vw, 3.5rem); }
.app-error p { margin: 0; }
.retry-button,
.player-retry-button {
  min-height: 4.25rem;
  margin-top: var(--space-4);
  padding: 0 1.6rem;
  border: 0;
  border-radius: var(--radius-medium);
  background: var(--color-esge-blue);
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.connection-status {
  position: fixed;
  z-index: 5;
  right: clamp(1.5rem, 4vw, 5rem);
  bottom: clamp(1.25rem, 3vw, 3rem);
  margin: 0;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-small);
  background: var(--color-esge-blue);
  box-shadow: var(--shadow-card);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}
.connection-status--hidden { visibility: hidden; opacity: 0; }

.kiosk-app {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
}
.kiosk-app--navigation-bottom { grid-template-rows: auto minmax(0, 1fr) auto; }

.app-header {
  z-index: 1;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  justify-content: space-between;
  padding: clamp(1.5rem, 2.5vw, 3rem) clamp(1.5rem, 4vw, 5rem) var(--space-3);
  background: var(--color-background);
  box-shadow: 0 0.75rem 1.5rem rgb(244 244 241 / 88%);
}

.app-heading h1 { margin: 0; color: var(--color-esge-blue); font-size: clamp(2rem, 3.2vw, 4rem); font-weight: 680; letter-spacing: -0.055em; }
.app-heading p { margin: 0.45rem 0 0; color: var(--color-muted); font-size: clamp(1rem, 1.2vw, 1.35rem); }
.app-controls { display: flex; flex: 0 0 auto; align-items: center; gap: var(--space-3); }
.video-count { margin: 0; color: var(--color-muted); font-size: clamp(0.8rem, 0.9vw, 1rem); font-weight: 750; letter-spacing: 0.1em; white-space: nowrap; }

.view-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-1); }
.bottom-navigation {
  display: flex;
  justify-content: center;
  padding: clamp(0.75rem, 1vw, 1rem) clamp(1.5rem, 4vw, 5rem);
  border-top: 1px solid rgb(17 29 84 / 10%);
  background: var(--color-background);
  box-shadow: 0 -0.75rem 1.5rem rgb(244 244 241 / 88%);
}
.bottom-navigation .view-nav { justify-content: center; }
.nav-button,
.back-button,
.author-card,
.letter-button,
.search-initial-button,
.search-control-button,
.search-term-card,
.search-chip,
.video-card { border: 0; cursor: pointer; }

.nav-button {
  min-height: 4.25rem;
  padding: 0 1.5rem;
  border-radius: var(--radius-medium);
  background: transparent;
  color: var(--color-muted);
  font-size: clamp(0.85rem, 1vw, 1rem);
  font-weight: 750;
  letter-spacing: 0.055em;
}
.nav-button[aria-current="page"] { background: var(--color-esge-blue); color: var(--color-accent-text); box-shadow: inset 0 -0.2rem 0 var(--color-esge-gold); }

.catalogue-area {
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  scroll-behavior: smooth;
  touch-action: pan-y;
  padding: var(--space-2) clamp(1.5rem, 4vw, 5rem) clamp(2rem, 4vw, 4rem);
}
.catalogue-view { max-width: 150rem; margin: 0 auto; }

.view-intro { display: flex; align-items: center; gap: var(--space-3); margin: 0 0 var(--space-3); }
.view-intro h2 { margin: 0; font-size: clamp(1.6rem, 2.2vw, 2.75rem); letter-spacing: -0.04em; }
.view-intro p { margin: 0; color: var(--color-muted); font-size: 1.1rem; }

.back-button { min-height: 4rem; padding: 0 1.35rem; border-radius: var(--radius-medium); background: #e8edf7; color: var(--color-esge-blue); font-size: 0.95rem; font-weight: 700; }
.back-button::before { content: "←"; margin-right: 0.65rem; font-size: 1.2em; }

.video-grid,
.author-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1rem, 1.35vw, 1.65rem); }

.video-card {
  display: flex;
  min-height: clamp(14rem, 20vh, 18rem);
  padding: clamp(1.25rem, 1.6vw, 2rem);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  text-align: left;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.video-card__content { display: flex; flex-direction: column; width: 100%; }
.video-card__number { color: var(--color-esge-blue); font-size: 0.8rem; font-weight: 750; letter-spacing: 0.075em; }
.video-card__title { display: -webkit-box; margin: var(--space-2) 0 auto; overflow: hidden; font-size: clamp(1.1rem, 1.3vw, 1.5rem); font-weight: 650; letter-spacing: -0.025em; line-height: 1.23; -webkit-box-orient: vertical; -webkit-line-clamp: 4; }
.video-card__author { margin: var(--space-2) 0 0; color: var(--color-muted); font-size: clamp(0.9rem, 1vw, 1.08rem); }
.video-card[aria-pressed="true"] { background: var(--color-selected); box-shadow: inset 0 0 0 0.18rem var(--color-esge-blue), inset 0 -0.28rem 0 var(--color-esge-gold); }

.author-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 9.5rem;
  padding: 1.5rem;
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  text-align: left;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.author-card__name { font-size: clamp(1.25rem, 1.55vw, 1.75rem); font-weight: 680; letter-spacing: -0.035em; }
.author-card__count { margin-top: var(--space-2); color: var(--color-muted); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.04em; }

.letter-grid { display: flex; flex-wrap: wrap; gap: clamp(0.7rem, 1vw, 1rem); }
.letter-button { display: grid; width: clamp(4rem, 5.1vw, 5.7rem); aspect-ratio: 1; place-items: center; border-radius: var(--radius-medium); background: var(--color-surface); box-shadow: var(--shadow-card); font-size: clamp(1.35rem, 2vw, 2.2rem); font-weight: 700; }
.letter-button[aria-pressed="true"] { background: var(--color-esge-blue); color: var(--color-accent-text); box-shadow: inset 0 -0.25rem 0 var(--color-esge-gold); }

.catalogue-area--search { overflow: hidden; padding-bottom: var(--space-2); }
.search-view { height: 100%; }
.search-split { display: grid; height: 100%; min-height: 0; grid-template-columns: minmax(21rem, 40%) minmax(0, 1fr); gap: clamp(1rem, 1.8vw, 2rem); }
.search-panel { min-width: 0; min-height: 0; }
.search-panel--controls { display: flex; flex-direction: column; padding: clamp(1rem, 1.6vw, 1.6rem); border-radius: var(--radius-large); background: var(--color-surface-soft); }
.search-panel--results { display: flex; flex-direction: column; }
.search-panel__heading { display: flex; flex: 0 0 auto; align-items: baseline; justify-content: space-between; margin-bottom: var(--space-2); }
.search-panel--controls .search-panel__heading { display: block; }
.search-panel__heading h2 { margin: 0; color: var(--color-esge-blue); font-size: clamp(1.35rem, 1.8vw, 2.15rem); letter-spacing: -0.035em; }
.search-panel__heading h2 span { margin-left: 0.4rem; color: var(--color-muted); font-size: 0.7em; }
.search-panel__heading p { margin: 0.3rem 0 0; color: var(--color-muted); font-size: 0.95rem; }
.search-prefix {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-small);
  background: var(--color-surface);
  color: var(--color-esge-blue);
  font-size: clamp(1rem, 1.4vw, 1.5rem);
}
.search-prefix > span { flex: 0 0 auto; color: var(--color-muted); font-size: 0.8em; font-weight: 700; text-transform: uppercase; }
.search-prefix strong { min-width: 0; overflow-wrap: anywhere; letter-spacing: 0.07em; }
.search-prefix-placeholder { color: var(--color-muted); font-size: 0.8em; font-weight: 500; letter-spacing: normal; }
.search-keyboard { display: grid; gap: clamp(0.5rem, 0.6vw, 0.65rem); }
.search-keyboard__row { display: grid; grid-template-columns: repeat(var(--key-count), minmax(0, 1fr)); gap: inherit; }
.search-keyboard__row--numbers { --key-count: 10; }
.search-keyboard__row--1 { --key-count: 10; }
.search-keyboard__row--2 { --key-count: 9; margin: 0 7%; }
.search-keyboard__row--3 { --key-count: 7; margin: 0 16%; }
.search-initial-button {
  min-width: 0;
  min-height: clamp(3.5rem, 3.5vw, 4.25rem);
  border-radius: var(--radius-small);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  color: var(--color-esge-blue);
  font-size: clamp(1.15rem, 1.45vw, 1.65rem);
  font-weight: 750;
}
.search-control-button {
  min-height: 3.5rem;
  padding: 0 1.2rem;
  border-radius: var(--radius-medium);
  background: #e8edf7;
  color: var(--color-esge-blue);
  font-size: 0.95rem;
  font-weight: 750;
  letter-spacing: 0.04em;
}
.search-control-button:disabled { opacity: 0.45; cursor: default; }
.search-panel--controls .search-actions,
.search-result-actions { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-top: var(--space-3); }
.search-panel__scroll { flex: 1 1 auto; min-height: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; touch-action: pan-y; overscroll-behavior: contain; padding: 0 0.3rem var(--space-1) 0; }
.search-hint,
.search-no-terms { margin: var(--space-2) 0; color: var(--color-muted); font-size: 1.05rem; }
.search-selection { margin: 0 0 var(--space-2); }
.search-selection > p { margin: 0 0 var(--space-1); color: var(--color-muted); font-size: 0.9rem; font-weight: 750; letter-spacing: 0.06em; text-transform: uppercase; }
.search-chip-row,
.search-actions { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.search-chip {
  min-height: 3.5rem;
  padding: 0 1.1rem;
  border-radius: 999px;
  background: var(--color-esge-blue);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
}
.search-chip span { margin-left: 0.45rem; color: var(--color-esge-gold); font-size: 1.4em; line-height: 0; }
.search-term-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(0.65rem, 0.85vw, 0.9rem); }
.search-term-card {
  display: flex;
  min-height: clamp(4.5rem, 5.6vw, 5.7rem);
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-small);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  color: var(--color-text);
  font-size: clamp(0.95rem, 1.15vw, 1.2rem);
  font-weight: 680;
  text-align: left;
}
.search-term-card small { margin-top: var(--space-1); color: var(--color-muted); font-size: 0.8rem; font-weight: 750; letter-spacing: 0.05em; text-transform: uppercase; }
.search-actions { margin: 0 0 var(--space-3); }
.search-actions .back-button { min-height: 3.5rem; }
.search-empty { max-width: 50rem; padding: clamp(2rem, 4vw, 4rem); border-radius: var(--radius-large); background: var(--color-surface); box-shadow: var(--shadow-card); }
.search-empty h3 { margin: 0; color: var(--color-esge-blue); font-size: clamp(1.4rem, 2vw, 2rem); }
.search-empty p { margin: var(--space-1) 0 var(--space-3); color: var(--color-muted); font-size: 1.05rem; }
.search-panel--results .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.search-panel--results .video-card { min-height: clamp(11rem, 16vh, 14rem); }

.player-overlay {
  position: fixed;
  z-index: 10;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2vw, 2rem);
  padding: clamp(1.25rem, 2.5vw, 3rem) clamp(1.25rem, 4vw, 5rem) clamp(1.5rem, 3vw, 3.5rem);
  overflow: hidden;
  background: #111210;
  color: #ffffff;
}

.player-header { display: flex; min-width: 0; align-items: flex-start; gap: clamp(1rem, 2vw, 2rem); }
.player-back-button {
  flex: 0 0 auto;
  min-width: 7rem;
  min-height: 4.25rem;
  padding: 0 1.4rem;
  border: 0;
  border-radius: var(--radius-medium);
  background: #ffffff;
  color: #161714;
  cursor: pointer;
  font-size: clamp(0.9rem, 1vw, 1.05rem);
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  touch-action: manipulation;
}
.player-back-button:first-letter { font-size: 1.4em; }
.player-details { min-width: 0; padding: 0.2rem 0; }
.player-details h2 { display: -webkit-box; max-width: 80rem; margin: 0; overflow: hidden; font-size: clamp(1.1rem, 1.55vw, 1.9rem); font-weight: 650; letter-spacing: -0.025em; line-height: 1.22; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.player-details p { margin: 0.4rem 0 0; color: #b8bab4; font-size: clamp(0.9rem, 1vw, 1.1rem); }
.player-bottom-bar {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  min-height: 4.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgb(255 255 255 / 15%);
}
.player-content {
  min-height: 0;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.player-frame-wrap { display: flex; width: 100%; height: 100%; min-width: 0; min-height: 0; align-items: center; justify-content: center; padding: 0 0.25rem 0.25rem; }
.player-frame { display: block; width: auto; height: 100%; max-width: 100%; aspect-ratio: 16 / 9; border: 0; background: #000000; }
.player-content--loading { position: relative; }
.player-content--loading .player-frame-wrap { visibility: hidden; }
.player-state {
  display: grid;
  width: min(100%, 48rem);
  justify-items: center;
  gap: var(--space-2);
  padding: clamp(2rem, 5vw, 5rem);
  border-radius: var(--radius-large);
  background: #1b1e2d;
  color: #ffffff;
  text-align: center;
}
.player-state--loading { position: absolute; inset: 0; width: auto; background: transparent; }
.player-state h3 { margin: 0; font-size: clamp(1.4rem, 2vw, 2.2rem); }
.player-state p { margin: 0; color: #d0d4e1; font-size: clamp(1rem, 1.2vw, 1.25rem); }
.player-retry-button { background: var(--color-esge-gold); color: var(--color-esge-blue); }
.player-spinner { width: 3rem; aspect-ratio: 1; border: 0.28rem solid rgb(255 255 255 / 25%); border-top-color: var(--color-esge-gold); border-radius: 50%; animation: player-spin 800ms linear infinite; }

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

@media (hover: hover) { .player-back-button:hover { background: #e5e6e1; } }
.player-back-button:active { transform: scale(0.975); }

@media (hover: hover) {
  .nav-button:not([aria-current="page"]):hover { background: var(--color-surface-soft); color: var(--color-text); }
  .video-card:hover,
  .author-card:hover,
  .letter-button:hover,
  .search-initial-button:hover,
  .search-control-button:not(:disabled):hover,
  .search-term-card:hover { transform: translateY(-0.3rem); box-shadow: 0 1.1rem 2.4rem rgb(25 27 24 / 12%); }
}

.nav-button:active,
.back-button:active,
.video-card:active,
.author-card:active,
.letter-button:active,
.search-initial-button:active,
.search-control-button:not(:disabled):active,
.search-term-card:active,
.search-chip:active,
.retry-button:active,
.player-retry-button:active { transform: scale(0.975); }

.video-card:focus-visible,
.author-card:focus-visible,
.letter-button:focus-visible,
.search-initial-button:focus-visible,
.search-control-button:focus-visible,
.search-term-card:focus-visible,
.search-chip:focus-visible,
.back-button:focus-visible { outline-color: var(--color-esge-gold); }

@media (max-width: 1500px) { .video-grid, .author-grid, .search-term-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 960px) {
  .app-header { flex-direction: column; }
  .app-controls { flex-wrap: wrap; }
  .view-nav { justify-content: flex-start; }
  .bottom-navigation .view-nav { justify-content: center; }
  .video-grid, .author-grid, .search-term-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .player-header { flex-direction: column; }
}
@media (max-height: 850px) and (min-width: 561px) {
  .search-panel--controls { padding: 0.75rem; }
  .search-panel__heading { margin-bottom: 0.5rem; }
  .search-panel__heading p { margin-top: 0.15rem; font-size: 0.85rem; }
  .search-selection { margin-bottom: 0.5rem; }
  .search-prefix { min-height: 3rem; margin-bottom: 0.5rem; padding: 0.4rem 0.8rem; }
  .search-keyboard { gap: 0.45rem; }
  .search-initial-button { min-height: 3rem; font-size: 1.1rem; }
  .search-panel--controls .search-actions,
  .search-result-actions { margin-top: 0.75rem; }
  .search-control-button,
  .search-chip,
  .search-actions .back-button { min-height: 3rem; }
}
@media (max-width: 560px) {
  .video-grid, .author-grid, .search-term-grid { grid-template-columns: 1fr; }
  .search-split { grid-template-columns: 1fr; height: auto; }
  .catalogue-area--search { overflow-y: auto; }
  .search-panel--controls { min-height: 34rem; }
  .search-panel__scroll { min-height: 24rem; }
  .search-prefix { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) { .attract-screen, .player-spinner { animation: none; } }