:root {
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #4a6286;
  --accent: #19205F;
  --accent-soft: #e8f1ff;
  --border: #c7d8ef;
  --success: #16a34a;
  --hidden: #0f172a;
  --page-bg: #f2f4f7;
  --panel-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
  --control-bg: #f3f8ff;
  --toggle-ghost: transparent;
  --surface-muted: #eef4ff;
  --hidden-bg: #19205F;
  --cloze-outline: #9cb7db;
  --return-bg: #e1ecff;
  --return-border: #86a7d8;
  --return-text: #173a7a;
  --return-shadow: 0 6px 16px rgba(23, 58, 122, 0.2);
  --focus-ring: rgba(23, 58, 122, 0.35);
}

body.theme-dark {
  --surface: #0f1a33;
  --ink: #edf3ff;
  --muted: #b2c2dd;
  --accent: #7fa5ec;
  --accent-soft: rgba(127, 165, 236, 0.2);
  --border: #2f4367;
  --success: #4ade80;
  --hidden: #081121;
  --page-bg: #081121;
  --panel-shadow: 0 10px 30px rgba(3, 6, 12, 0.55);
  --control-bg: #16233f;
  --toggle-ghost: rgba(255, 255, 255, 0.08);
  --surface-muted: #142544;
  --hidden-bg: #e8f1ff;
  --cloze-outline: #4a6694;
  --return-bg: rgba(127, 165, 236, 0.22);
  --return-border: rgba(163, 191, 238, 0.62);
  --return-text: #e6efff;
  --return-shadow: 0 6px 16px rgba(7, 14, 28, 0.5);
  --focus-ring: rgba(163, 191, 238, 0.48);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  background: var(--page-bg);
  color: var(--ink);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(48, 55, 66, 0.34);
  opacity: 0;
  transition: opacity 360ms ease;
  pointer-events: none;
  z-index: 0;
}

body.is-audio-playing::before {
  opacity: 0.4;
}

#appRoot,
.access-gate {
  position: relative;
  z-index: 1;
}

.is-hidden {
  display: none;
}

.access-gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.access-gate.is-hidden {
  display: none;
}

.access-gate__card {
  width: min(420px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--panel-shadow);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.access-gate__title {
  margin: 0;
}

.access-gate__hint {
  margin: 0;
  color: var(--muted);
}

.access-gate__label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
}

.access-gate__input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 1rem;
  background: var(--surface);
  color: var(--ink);
}

.access-gate__input:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.access-gate__error {
  margin: 0;
  color: #dc2626;
  font-size: 0.95rem;
}

.page-header {
  background: #f2f4f7;
  border-bottom: 1px solid transparent;
}

.page-header__inner {
  max-width: 745px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  position: relative;
}

.page-header h1 {
  margin: 0 0 8px;
  font-size: 1.55rem;
  color: var(--accent);
}

.page-header p {
  margin: 0;
  color: var(--muted);
}

.theme-toggle {
  position: absolute;
  top: 24px;
  right: 16px;
  border: 1px solid var(--border);
  background: var(--control-bg);
  color: var(--ink);
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.theme-toggle:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.menu {
  max-width: 745px;
  margin: 0 auto;
  padding: 28px 16px 24px;
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.menu.is-hidden {
  display: none;
}

.menu__panel {
  background: var(--surface);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: var(--panel-shadow);
}

.menu__header-subtext {
  margin: 0 0 14px;
  color: #141b52;
  font-size: 1rem;
  font-weight: 500;
}

.menu__tabs {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}

.menu__tab {
  border: none;
  outline: none;
  background: transparent;
  color: #848dac;
  padding: 8px 2px;
  border-bottom: 3px solid transparent;
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.25;
  cursor: pointer;
}

.menu__tab.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  border-bottom-width: 4px;
}

.menu__title {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.menu__select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 1rem;
  background: var(--surface);
  color: var(--ink);
  margin-bottom: 16px;
}

.menu__select:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.menu__details {
  min-height: 220px;
  color: var(--muted);
}

.menu__empty {
  margin: 0;
}

.menu__error {
  margin: 0;
  color: #dc2626;
}

.details {
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.details__title {
  margin: 0;
}

.details__meta {
  margin: 0;
}

.details__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.details__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.details__label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  color: var(--ink);
}

.details__input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.95rem;
  width: 140px;
}

.details__begin {
  border: none;
  background: var(--accent);
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-start;
}

.details__begin:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise {
  max-width: 745px;
  margin: 0 auto 40px;
  padding: 12px 16px 132px;
  position: relative;
}

.exercise.is-hidden {
  display: none;
}

.exercise__top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  margin: 0 0 14px;
}

.exercise__heading {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}

.exercise__menu-button {
  border: none;
  background: transparent;
  box-shadow: none;
  border-radius: 10px;
  padding: 4px;
  min-width: 0;
  color: #0a1f4f;
  flex: 0 0 auto;
}

.exercise__menu-button-icon {
  width: 22px;
  height: 22px;
  display: block;
  line-height: 1;
}

.exercise__menu-button:hover {
  background: color-mix(in srgb, #0a1f4f 7%, transparent);
}

.exercise__menu-button:focus {
  outline: 3px solid color-mix(in srgb, #0a1f4f 30%, white 70%);
  outline-offset: 3px;
}

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

.exercise__title {
  margin: 0 0 14px;
  text-align: center;
  color: var(--accent);
  font-size: clamp(0.94rem, 1.53vw, 1.23rem);
  font-weight: 700;
}

.exercise__player {
  display: none;
}

.exercise__progress {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1 1 auto;
  min-width: 72px;
  margin: 0;
}

.exercise__progress-count {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  min-width: 2.5rem;
  line-height: 1;
}

.exercise__progress-track {
  flex: 1;
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--page-bg) 82%, #596579 18%);
}

.exercise__progress-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: #4285f4;
  transition: width 220ms ease;
}

.exercise__stage-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.exercise__stage-button {
  border: 1px solid #b8c0cc;
  border-radius: 8px;
  background: #f4f6f9;
  color: #06184f;
  min-height: 36px;
  padding: 7px 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.exercise__stage-button-icon {
  width: 16px;
  height: 16px;
  display: block;
  flex: 0 0 auto;
}

.exercise__stage-button:hover:not(:disabled) {
  background: #e8edf4;
  border-color: #8f9bac;
}

.exercise__stage-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  filter: grayscale(1);
}

.exercise__stage-button:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise__text {
  background: var(--surface);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 28px;
  white-space: pre-wrap;
  overflow: auto;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.exercise__drawer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100vw;
  min-height: 92px;
  background: rgba(0, 0, 0, 0.58);
  border-radius: 0;
  box-shadow: 0 -10px 32px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(10px);
  z-index: 15;
  display: grid;
  place-items: center;
}

.exercise.is-hidden .exercise__drawer {
  display: none;
}

.exercise__audio-button {
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 2px solid #eff2fb;
  background: #f6f7fd;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  cursor: pointer;
}

.exercise__audio-button img {
  width: 28px;
  height: 28px;
  display: block;
}

.exercise__audio-button:hover {
  background: #eef1fb;
  border-color: #e4e9f8;
}

.exercise__audio-button.is-playing {
  background: #e9edfb;
  border-color: #dce4fb;
}

.exercise__audio-button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.exercise__audio-button:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.toggle-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.toggle-button--ghost {
  background: var(--surface);
}

.toggle-button:hover {
  background: var(--control-bg);
}

.toggle-button--return {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 8px 14px;
  border-color: var(--return-border);
  background: var(--return-bg);
  color: var(--return-text);
  font-weight: 600;
  box-shadow: var(--return-shadow);
}

.toggle-button--return:hover {
  background: color-mix(in srgb, var(--return-bg) 70%, white 30%);
  border-color: color-mix(in srgb, var(--return-border) 80%, white 20%);
}

.toggle-button__icon {
  font-family: 'Material Symbols Outlined', sans-serif;
  font-size: 1.1rem;
  line-height: 1;
  font-variation-settings: 'FILL' 0, 'wght' 500, 'GRAD' 0, 'opsz' 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2em;
  overflow: hidden;
  white-space: nowrap;
}

.toggle-button:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise__content {
  width: 100%;
  padding: 0 72px;
  color: var(--ink);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 500;
  line-height: 1.55;
  text-align: center;
}

.exercise__content.is-speech-correct {
  color: var(--success);
}

.exercise__content.is-speech-correct .cloze-word,
.cloze-word.is-speech-correct,
.speech-word.is-speech-correct {
  color: var(--success);
}

.speech-word {
  transition: color 0.16s ease;
}

.exercise__mic-button {
  width: 58px;
  height: 58px;
  border: none;
  border-radius: 999px;
  background: #06184f;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  grid-area: 1 / 1;
}

.exercise__mic-button-icon {
  width: 28px;
  height: 28px;
  display: block;
}

.exercise__mic-button:hover {
  background: #0b226a;
}

.exercise__mic-button.is-listening {
  background: #123798;
  box-shadow: 0 0 0 8px rgba(80, 119, 244, 0.18);
}

.exercise__mic-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.exercise__mic-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.62);
  outline-offset: 3px;
}

.exercise__success-next {
  grid-area: 1 / 1;
  justify-self: center;
  margin-left: 168px;
  min-height: 42px;
  border: none;
  border-radius: 8px;
  background: #ffffff;
  color: #06184f;
  padding: 10px 18px;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
}

.exercise__success-next:hover {
  background: #eef2ff;
}

.exercise__success-next:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.62);
  outline-offset: 3px;
}

.exercise__content--vtt {
  display: grid;
  row-gap: 1.5lh;
  align-content: start;
}

.vtt-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: 100%;
  padding: 0;
}

.vtt-cue__speaker {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.vtt-cue__line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
}

.vtt-cue__jump {
  appearance: none;
  border: none;
  background: #002060;
  color: #ffffff;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 1.35rem;
  width: 2.5rem;
  padding: 0;
  outline: none;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  flex: 0 0 auto;
}

.vtt-cue__jump:hover {
  background: #002a7f;
}

.vtt-cue__jump:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 32, 96, 0.35);
}

.vtt-cue__jump-icon {
  display: block;
  width: 0.92rem;
  height: 0.92rem;
}

.vtt-cue__text {
  display: block;
  min-height: 0.7rem;
  font-size: inherit;
  line-height: inherit;
  border-radius: 8px;
  padding: 1px 6px;
  transition: background 0.2s ease;
}

.vtt-cue__text.is-active {
  background: color-mix(in srgb, var(--accent-soft) 88%, transparent);
}

.media-card {
  width: 100%;
  border: 1px solid color-mix(in srgb, #a4c5ff 35%, transparent);
  border-radius: 0;
  background: linear-gradient(160deg, #0e1f48 0%, #0a1635 58%, #08122b 100%);
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: #e8f0ff;
  box-shadow:
    0 16px 34px rgba(2, 8, 25, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 0 1px rgba(138, 177, 255, 0.12);
}

.media-card__progress-row {
  padding: 0 clamp(8px, 2.8vw, 18px);
}

.media-card__time-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 0 clamp(8px, 2.8vw, 18px);
}

.media-card__transport-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2.8vw, 20px);
  padding: 2px clamp(4px, 2vw, 14px) 0;
}

.media-card__time {
  font-size: clamp(0.78rem, 2.6vw, 0.92rem);
  color: rgba(228, 240, 255, 0.9);
  white-space: nowrap;
}

.media-card__time--elapsed {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.media-card__time--duration {
  color: rgba(195, 214, 248, 0.92);
  flex-shrink: 0;
}

.media-card__speed-toggle {
  border: 1px solid rgba(201, 221, 255, 0.5);
  background: rgba(12, 26, 54, 0.55);
  color: #eaf2ff;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.1;
  min-width: 58px;
  text-align: center;
  cursor: pointer;
  flex-shrink: 0;
}

.media-card__progress {
  --progress-percent: 0%;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  width: 100%;
  margin: 4px 0;
  height: 14px;
  cursor: pointer;
}

.media-card__progress::-webkit-slider-runnable-track {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0.95) 0 var(--progress-percent),
    rgba(198, 218, 255, 0.35) var(--progress-percent) 100%
  );
}

.media-card__progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(180deg, #66a8ff 0%, #2b69e8 100%);
  border: 2px solid #dcecff;
  box-shadow: 0 2px 8px rgba(5, 18, 43, 0.5);
  margin-top: -4px;
}

.media-card__progress::-moz-range-track {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0.95) 0 var(--progress-percent),
    rgba(198, 218, 255, 0.35) var(--progress-percent) 100%
  );
}

.media-card__progress::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(180deg, #66a8ff 0%, #2b69e8 100%);
  border: 2px solid #dcecff;
  box-shadow: 0 2px 8px rgba(5, 18, 43, 0.5);
}

.media-card__nav-button,
.media-card__play {
  border: none;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  min-height: 46px;
}

.media-card__nav-button {
  width: clamp(46px, 12vw, 56px);
  border-radius: 999px;
  background: linear-gradient(180deg, #4b5f88 0%, #233a67 24%, #152a4f 70%, #0f223f 100%);
  box-shadow:
    inset 0 1px 0 rgba(214, 226, 248, 0.35),
    inset 0 -1px 0 rgba(9, 20, 40, 0.55),
    0 8px 18px rgba(3, 13, 35, 0.45);
  flex: 0 0 auto;
}

.media-card__play {
  flex: 1;
  min-width: clamp(160px, 48vw, 300px);
  max-width: clamp(200px, 56vw, 360px);
  min-height: 52px;
  border-radius: 12px;
  background: linear-gradient(180deg, #2f4f95 0%, #1c3368 100%);
  box-shadow: 0 12px 24px rgba(6, 24, 64, 0.55);
}

.media-card__play .material-symbols-outlined {
  font-size: 2.8rem;
  line-height: 1;
}

.media-card__nav-button .material-symbols-outlined {
  font-size: 1.4rem;
  line-height: 1;
}

.media-card__play.is-playing {
  background: linear-gradient(180deg, #4669b1 0%, #294986 100%);
}

.media-card__nav-button:focus-visible,
.media-card__play:focus-visible,
.media-card__progress:focus-visible,
.media-card__speed-toggle:focus-visible,
.toggle-button:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise__player .media-card {
  --player-overlay-border: color-mix(in srgb, #9ec0ff 30%, transparent);
  width: 100vw;
  max-width: 100vw;
  border-color: var(--player-overlay-border);
  border-radius: 0;
  padding-top: 14px;
  padding-bottom: 14px;
  backdrop-filter: blur(5px);
}

.exercise__player .media-card__progress {
  --progress-percent: 0%;
}

.exercise__player .media-card__progress::-webkit-slider-runnable-track,
.exercise__player .media-card__progress::-moz-range-track {
  background: linear-gradient(
    to right,
    #ffffff 0 var(--progress-percent),
    rgba(190, 211, 248, 0.32) var(--progress-percent) 100%
  );
}
.cloze-word {
  border: 1px solid #b6dbc2;
  background: transparent;
  color: #168a3a;
  font: inherit;
  font-size: 1em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: baseline;
  line-height: 1.2;
  padding: 1px 6px;
  margin: 0 1px;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.cloze-word::after {
  content: "";
  display: none;
}

.cloze-word.is-hidden {
  background: #fcf4da;
  color: transparent;
  border-color: #ebb41c;
  min-width: 1.75em;
  box-shadow: none;
}

.cloze-word.is-hidden::after {
  content: "";
  display: block;
  position: absolute;
  inset: 50% auto auto 50%;
  width: 1em;
  height: 1em;
  transform: translate(-50%, -50%);
  background: center / contain no-repeat url("assets/padlock-gold.svg");
}

.cloze-word.is-unlocked,
.cloze-word:not(.is-hidden) {
  background: #eaf8ef;
  border-color: #b6dbc2;
  color: #168a3a;
}

.cloze-word.is-unlocked::after,
.cloze-word:not(.is-hidden)::after {
  display: none;
}

.cloze-word:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise-complete-popup.is-hidden {
  display: none;
}

.exercise-complete-popup {
  display: none !important;
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: min(560px, calc(100% - 24px));
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--panel-shadow);
  padding: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.exercise-complete-popup__message {
  margin: 0;
  font-weight: 700;
  color: var(--ink);
}


.exercise-complete-popup__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.exercise-complete-popup__button:hover {
  background: var(--control-bg);
}

.exercise-complete-popup__button:focus {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.exercise-complete-popup__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

@media (min-width: 901px) {
  .menu {
    grid-template-columns: 640px;
    justify-content: center;
  }

  .menu__panel,
  .exercise__top-row,
  .exercise__heading,
  .exercise__text {
    width: 640px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 640px) {
  .exercise-complete-popup {
    flex-direction: column;
    align-items: stretch;
  }

  .exercise__heading {
    align-items: center;
  }

  .exercise__title {
    text-align: center;
  }

  .exercise__text {
    min-height: 280px;
    padding: 24px;
  }

  .exercise__audio-button {
    left: 18px;
    width: 46px;
    height: 46px;
  }

  .exercise__audio-button img {
    width: 25px;
    height: 25px;
  }

  .exercise__content {
    padding: 0 52px;
    font-size: clamp(1.25rem, 5.2vw, 1.65rem);
  }

  .exercise__top-row {
    gap: 8px;
  }

  .exercise__progress {
    gap: 8px;
  }

  .exercise__progress-count {
    min-width: 2rem;
    font-size: 0.82rem;
  }

  .exercise__stage-actions {
    gap: 6px;
  }

  .exercise__stage-button {
    min-height: 34px;
    padding: 7px 8px;
    font-size: 0.86rem;
  }

  .exercise__stage-button-icon {
    width: 14px;
    height: 14px;
  }

  .exercise-complete-popup__actions {
    width: 100%;
  }

  .exercise-complete-popup__actions > button {
    flex: 1;
    justify-content: center;
  }

  .media-card {
    border-radius: 0;
    padding: 14px 10px 12px;
    gap: 10px;
  }

  .media-card__transport-row {
    gap: clamp(8px, 2.2vw, 14px);
  }

  .media-card__play {
    min-width: clamp(136px, 46vw, 250px);
    min-height: 50px;
  }
}

@media (max-width: 480px) {
  .media-card {
    padding: 12px 8px 10px;
  }

  .media-card__time-row {
    padding: 0 6px;
  }

  .media-card__transport-row {
    gap: 8px;
    padding-inline: 2px;
  }

  .media-card__play {
    min-width: clamp(120px, 42vw, 210px);
    min-height: 46px;
  }

  .media-card__nav-button {
    width: clamp(40px, 12vw, 48px);
    min-height: 42px;
  }
}