/* wordLoot — dark + yellow theme (matches Chrome extension) */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0a10;
  --bg-elevated: #0e0e16;
  --bg-card: #12121c;
  --bg-alt: #0c0c14;
  --border: rgba(255, 255, 255, 0.08);
  --border-yellow: rgba(255, 235, 59, 0.35);
  --text: #f5f5f7;
  --text-muted: rgba(255, 255, 255, 0.62);
  --text-dim: rgba(255, 255, 255, 0.38);
  --accent: #ffeb3b;
  --accent-hover: #fff176;
  --accent-dim: rgba(255, 235, 59, 0.12);
  --font-display: "Segoe UI", system-ui, sans-serif;
  --font-sans: "Segoe UI", system-ui, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

a,
a:link,
a:visited,
a:hover,
a:active,
a:focus {
  color: inherit;
  text-decoration: none;
}

button,
.btn,
.navbar__logo,
.navbar__link,
.navbar__btn,
.navbar__cta,
.footer__links a,
.footer__email,
.show-card,
.platform-logo,
.compound__nav,
.compound__dot,
.demo-mode-btn,
.script-toggle__btn,
.review-modes-demo__tab {
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.section {
  padding: 5.5rem 0;
}

.section--alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
  text-align: center;
}

.section__title {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
  margin-bottom: 3rem;
  line-height: 1.7;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 16, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar--scrolled {
  background: rgba(10, 10, 16, 0.96);
  box-shadow: var(--shadow);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, 92vw);
  margin-inline: auto;
  padding: 0.9rem 0;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-decoration: none;
}

.navbar__logo:link,
.navbar__logo:visited,
.navbar__logo:hover,
.navbar__logo:active,
.navbar__logo:focus {
  text-decoration: none;
}

.navbar__logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar__link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--accent);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-left: 0.35rem;
}

.navbar__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.navbar__btn--ghost {
  color: var(--text);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
}

.navbar__btn--ghost:hover {
  border-color: rgba(255, 235, 59, 0.55);
  color: var(--accent);
  background: rgba(255, 235, 59, 0.08);
}

.navbar__btn--primary,
a.navbar__btn--primary,
a.navbar__btn--primary:link,
a.navbar__btn--primary:visited,
a.navbar__btn--primary:hover,
a.navbar__btn--primary:active,
a.navbar__btn--primary:focus {
  background: var(--accent);
  color: #0a0a10;
  border-color: var(--accent);
}

.navbar__btn--primary:hover,
a.navbar__btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #0a0a10;
}

button.navbar__link {
  background: none;
  border: none;
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.navbar__cta {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #0a0a10;
  transition: background var(--transition);
}

.navbar__cta:hover {
  background: var(--accent-hover);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.navbar__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--accent);
  transition: transform var(--transition), opacity var(--transition);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Hero ── */
.hero {
  padding: 7.5rem 0 4rem;
}

.hero--home {
  padding: 8.5rem 0 5rem;
  overflow: visible;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 3.5rem;
  align-items: center;
  overflow: visible;
}

.hero__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.35rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 480px;
  line-height: 1.75;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.hero__platforms {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.platform-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.75rem;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.platform-pill img {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

a.platform-pill:hover {
  border-color: var(--border-yellow);
  color: var(--accent);
  background: rgba(255, 235, 59, 0.08);
}

.platform-logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
  border: none;
  background: none;
  padding: 0;
}

.platform-logo img {
  width: 96px;
  height: 96px;
  object-fit: contain;
  display: block;
  transition: opacity var(--transition), transform var(--transition);
}

.platform-logo:hover img {
  opacity: 0.85;
  transform: scale(1.06);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
}

.btn--primary,
a.btn--primary,
a.btn--primary:link,
a.btn--primary:visited,
a.btn--primary:hover,
a.btn--primary:active,
a.btn--primary:focus {
  background: var(--accent);
  color: #0a0a10;
  padding: 0.9rem 1.65rem;
}

.btn--primary:hover:not(:disabled),
a.btn--primary:hover:not(:disabled) {
  background: var(--accent-hover);
  color: #0a0a10;
}

.btn--primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn--outline {
  background: transparent;
  color: var(--text);
  padding: 0.9rem 1.65rem;
  border: 1px solid var(--border-yellow);
}

.btn--outline:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

.btn--full {
  width: 100%;
}

/* ── Subtitle demo mockup ── */
.demo-player {
  background: var(--bg-card);
  border: 1px solid var(--border-yellow);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.demo-player__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.demo-player__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.demo-player__dot--red { background: #ff5f57; }
.demo-player__dot--yellow { background: #ffeb3b; }
.demo-player__dot--green { background: #28c840; }

.demo-player__screen {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(160deg, #1a1028 0%, #0d0d18 45%, #12100a 100%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
  --demo-sub-size: 24px;
  --demo-sub-bottom: 15%;
  overflow: hidden;
}

.demo-player__scene {
  position: absolute;
  inset: 0;
}

.demo-player__scene--solo {
  background:
    linear-gradient(to top, rgba(10, 10, 16, 0.75) 0%, rgba(10, 10, 16, 0.15) 45%, transparent 70%),
    url("../solo.webp") center / cover no-repeat;
}

.demo-player__scene--mob {
  overflow: hidden;
  background: #0a0a10;
}

.demo-player__scene--mob::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(10, 10, 16, 0.8) 0%, rgba(10, 10, 16, 0.2) 40%, transparent 70%);
  pointer-events: none;
}

.demo-mob-gif,
.demo-mob-freeze {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.demo-mob-freeze {
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  transition: none;
}

.demo-player--listen.is-paused .demo-mob-freeze {
  opacity: 1;
}

.demo-player--listen.is-paused .demo-mob-gif {
  visibility: hidden;
}

.demo-pause-badge {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 4;
  transform: translate(-50%, -50%);
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: rgba(10, 10, 16, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  backdrop-filter: blur(6px);
}

.demo-player__screen--listen {
  aspect-ratio: 16 / 11;
}

.demo-subtitle__en--lg {
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.45;
}

.demo-player__screen--listen .demo-subtitle__en {
  bottom: 7%;
}

.demo-subtitle__jp .hl--listen {
  color: #fff;
  font-weight: inherit;
  text-shadow: 0 0 8px #000, 0 2px 4px #000;
  transition: color 0.75s ease, text-shadow 0.75s ease;
}

.demo-subtitle__line .hl--listen {
  color: #fff;
  font-weight: inherit;
  text-shadow: 0 0 8px #000, 0 2px 4px #000;
  transition: color 0.75s ease, text-shadow 0.75s ease;
}

.demo-player--listen.is-highlighting .hl--listen,
.demo-player--listen.is-collecting .hl--listen {
  color: var(--accent);
  font-weight: 800;
  text-shadow: 0 0 14px rgba(255, 235, 59, 0.8), 0 0 4px #000;
  opacity: 1;
  animation: none;
}

.demo-fly-word {
  position: fixed;
  z-index: 20;
  color: var(--accent);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 800;
  text-shadow: 0 0 12px rgba(255, 235, 59, 0.8), 0 2px 4px #000;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: transform 0.85s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.85s ease;
}

.demo-particle {
  position: fixed;
  pointer-events: none;
  z-index: 20;
}

.demo-chip--empty {
  opacity: 0.55;
  font-weight: 600;
}

.demo-chip--arrive {
  animation: chip-in 0.35s ease-out;
}

@keyframes chip-in {
  from { transform: scale(0.4); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.demo-subtitle {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.demo-subtitle__line,
.demo-subtitle__jp {
  position: absolute;
  left: 5%;
  right: 5%;
  bottom: var(--demo-sub-bottom);
  font-size: var(--demo-sub-size);
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 8px #000, 0 2px 4px #000;
  margin: 0;
  line-height: 1.45;
  text-align: center;
}

.demo-subtitle__line .hl:not(.hl--listen),
.demo-subtitle__jp .hl:not(.hl--listen) {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(255, 235, 59, 0.5);
}

.demo-subtitle__en {
  position: absolute;
  left: 5%;
  right: 5%;
  bottom: 8%;
  margin: 0;
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.75);
  text-shadow: 0 1px 3px #000;
  text-align: center;
}

.demo-wordLoot {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 3;
  background: rgba(10, 10, 16, 0.88);
  border: 1px solid var(--border-yellow);
  border-radius: 14px;
  padding: 10px 12px;
  min-width: 110px;
  backdrop-filter: blur(8px);
  pointer-events: auto;
}

.demo-wordLoot__title {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.demo-wordLoot__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  align-items: flex-start;
}

.demo-wordLoot__hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  text-align: right;
}

.demo-chip-row {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.demo-chip-row.is-arrive {
  animation: chip-in 0.35s ease-out;
}

.demo-chip {
  display: inline-block;
  width: fit-content;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(255, 235, 59, 0.12);
  border: 1px solid rgba(255, 235, 59, 0.45);
  color: var(--accent);
  font-weight: 700;
  line-height: 1.2;
  cursor: default;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.demo-chip-detail {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 4;
  width: max-content;
  max-width: 220px;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(18, 18, 26, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  pointer-events: none;
}

.demo-chip-row:hover .demo-chip {
  background: rgba(255, 235, 59, 0.2);
  border-color: rgba(255, 235, 59, 0.65);
}

.demo-chip-row:hover .demo-chip-detail {
  display: block;
}

.demo-settings-wrap {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 6;
  pointer-events: auto;
}

.demo-player-wrap {
  position: relative;
  overflow: visible;
  isolation: isolate;
}

.demo-settings {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(10, 10, 16, 0.82);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 13px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

.demo-cue {
  position: absolute;
  z-index: 8;
  color: var(--accent);
  pointer-events: none;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.45));
  animation: demo-cue-bounce 1.45s ease-in-out infinite;
}

.demo-cue--settings {
  /* Tip aims at settings gear (top-left of video) */
  top: -2.6rem;
  left: -4.75rem;
}

.demo-cue--bag {
  /* Tip aims at wordLoot box (top-right of video) */
  top: -0.35rem;
  right: -4.75rem;
  animation-name: demo-cue-bounce-bag;
}

.demo-cue__svg {
  display: block;
  width: clamp(5.5rem, 11vw, 7.5rem);
  height: auto;
}

@keyframes demo-cue-bounce {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(5px, 7px);
  }
}

@keyframes demo-cue-bounce-bag {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-5px, 7px);
  }
}

.demo-settings-panel {
  margin-top: 6px;
  width: min(188px, 68vw);
  background: rgba(10, 10, 16, 0.94);
  border: 1px solid rgba(255, 235, 59, 0.35);
  border-radius: 10px;
  padding: 9px 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
}

.demo-settings-panel__title {
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.demo-settings-panel__label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 9px;
  margin-bottom: 4px;
}

.demo-settings-modes {
  display: flex;
  gap: 4px;
  margin-bottom: 9px;
}

.demo-mode-btn {
  flex: 1;
  padding: 4px 5px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: transparent;
  color: rgba(255, 255, 255, 0.85);
}

.demo-mode-btn.is-active {
  border-color: rgba(255, 235, 59, 0.7);
  background: rgba(255, 235, 59, 0.18);
  color: var(--accent);
}

.demo-settings-range {
  width: 100%;
  accent-color: var(--accent);
  margin-bottom: 9px;
  height: 14px;
}

.demo-settings-check {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  margin-bottom: 8px;
  cursor: pointer;
}

.demo-settings-check:last-child {
  margin-bottom: 0;
}

.demo-settings-check input {
  margin-top: 1px;
  accent-color: var(--accent);
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

.demo-settings-check strong {
  display: block;
  color: #fff;
  font-size: 10px;
  font-weight: 600;
}

.demo-settings-check small {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 8px;
  margin-top: 1px;
  line-height: 1.3;
}

/* ── Feature blocks ── */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-block--reverse .feature-block__visual {
  order: 2;
}

.feature-block--reverse .feature-block__content {
  order: 1;
}

.feature-block__label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.feature-block__title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.feature-block__text {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.feature-list li {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding-left: 1.25rem;
  position: relative;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-yellow);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.feature-card__words {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.word-row {
  background: var(--accent-dim);
  border: 1px solid var(--border-yellow);
  border-radius: 10px;
  padding: 10px 12px;
}

.word-row__jp {
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 800;
}

.word-row__meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 3px;
}

.wordLoot-panel-demo {
  text-align: center;
}

.wordLoot-panel-demo__count {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.wordLoot-panel-demo__label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
}


.review-modes-demo {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.review-modes-demo__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.review-modes-demo__tabs {
  display: flex;
  gap: 0.5rem;
}

.review-modes-demo__tab {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

.review-modes-demo__tab--active {
  border-color: var(--border-yellow);
  color: var(--accent);
  background: var(--accent-dim);
}

.review-modes-demo__flash.flashcard {
  min-height: 220px;
}

.review-modes-demo__flash .flashcard__inner {
  min-height: 220px;
}

.review-modes-demo__flash .flashcard__text {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
}

.review-modes-demo__flash .flashcard__text--answer {
  font-size: clamp(1.15rem, 3vw, 1.55rem);
}

.review-modes-demo__learn {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.review-modes-demo__learn[hidden],
#demoFlashPanel[hidden] {
  display: none !important;
}

.review-modes-demo__prompt-label {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
}

.review-modes-demo__prompt {
  margin: 0;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--accent);
  text-align: center;
}

.review-modes-demo .learn__choices {
  grid-template-columns: 1fr;
}

.review-modes-demo .learn__feedback {
  text-align: center;
  min-height: 1.4em;
}

/* ── Pricing ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 720px;
  margin-inline: auto;
}

.pricing-grid--single {
  grid-template-columns: 1fr;
  max-width: 420px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
}

.pricing-card--featured {
  border-color: var(--border-yellow);
  box-shadow: 0 0 0 1px rgba(255, 235, 59, 0.15), var(--shadow);
  position: relative;
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #0a0a10;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
}

.pricing-card__name {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.pricing-card__price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.pricing-card__price span,
.pricing-card__unit {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.pricing-features {
  list-style: none;
  margin-bottom: 1.75rem;
}

.pricing-features li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
  padding-left: 1.1rem;
  position: relative;
}

.pricing-features li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.pricing-features li.na {
  opacity: 0.4;
  text-decoration: line-through;
}

/* ── Testimonials ── */
.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.testimonial {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.testimonial__text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.testimonial__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--border-yellow);
  display: grid;
  place-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent);
}

.testimonial__name {
  font-size: 0.82rem;
  font-weight: 600;
}

/* ── Compound progress carousel ── */
.compound {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  margin-top: 0.25rem;
}

.compound__carousel {
  position: relative;
  display: block;
}

.compound__viewport {
  width: 100%;
  overflow: hidden;
  padding: 0.15rem 0;
  outline: none;
  touch-action: pan-y;
  user-select: none;
}

.compound__track {
  display: flex;
  align-items: stretch;
  gap: 0.85rem;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.compound__slide {
  position: relative;
  flex: 0 0 min(760px, 62vw);
  aspect-ratio: 21 / 9;
  min-height: 220px;
  max-height: 300px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0a0a10;
  cursor: pointer;
  opacity: 0.48;
  transition:
    opacity 0.45s ease,
    border-color 0.3s ease,
    box-shadow 0.45s ease;
  filter: saturate(0.85);
}

.compound__slide.is-current {
  opacity: 1;
  cursor: default;
  border-color: var(--border-yellow);
  box-shadow: var(--shadow);
  filter: none;
}

.compound__slide.is-prev,
.compound__slide.is-next {
  opacity: 0.58;
}

.compound__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.compound__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(105deg, rgba(10, 10, 16, 0.12) 18%, rgba(10, 10, 16, 0.72) 58%, rgba(10, 10, 16, 0.94) 100%),
    linear-gradient(to top, rgba(10, 10, 16, 0.7) 0%, transparent 42%);
  opacity: 0.55;
  transition: opacity 0.35s ease;
}

.compound__slide.is-current .compound__shade {
  opacity: 1;
}

.compound__math {
  position: absolute;
  z-index: 2;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(52%, 360px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.15rem 1.4rem 1.15rem 0.75rem;
  pointer-events: none;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.compound__slide.is-current .compound__math {
  opacity: 1;
  transform: translateX(0);
}

.compound__show {
  margin: 0 0 0.55rem;
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.compound__formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  font-size: 0.86rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  transition: opacity 0.25s ease;
}

.compound__chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.48rem;
  border-radius: 7px;
  background: rgba(255, 235, 59, 0.14);
  border: 1px solid rgba(255, 235, 59, 0.45);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
}

.compound__formula-op {
  color: var(--accent);
  font-weight: 800;
}

.compound__divider {
  width: 22px;
  height: 2px;
  margin: 0.65rem 0 0.55rem;
  background: rgba(255, 235, 59, 0.65);
  border-radius: 2px;
  transform-origin: left center;
  transition: transform 0.35s ease;
}

.compound__total {
  margin: 0;
  font-size: clamp(3rem, 7vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--accent);
  text-shadow: 0 0 24px rgba(255, 235, 59, 0.35);
  font-variant-numeric: tabular-nums;
}

.compound__total.is-ticking {
  animation: compound-pulse 0.45s ease;
}

.compound__result-label {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}

.compound__note {
  margin: 0.4rem 0 0;
  max-width: 24ch;
  font-size: 0.72rem;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.55);
}

.compound__nav {
  position: absolute;
  top: 50%;
  z-index: 4;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(10, 10, 16, 0.96);
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  text-decoration: none;
  opacity: 1;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

.compound__nav--prev { left: max(2.25rem, calc(env(safe-area-inset-left) + 1.5rem)); }
.compound__nav--next { right: max(2.25rem, calc(env(safe-area-inset-right) + 1.5rem)); }

.compound__nav:hover:not(:disabled) {
  background: rgba(255, 235, 59, 0.92);
  border-color: var(--accent);
  color: #0a0a10;
  transform: translateY(-50%) scale(1.06);
}

.compound__nav:disabled {
  opacity: 0.35;
  cursor: default;
}

.compound__dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.9rem;
}

.compound__dot {
  width: 10px;
  height: 10px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.compound__dot:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: scale(1.12);
}

.compound__dot.is-active {
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 235, 59, 0.22);
  transform: scale(1.15);
}

@keyframes compound-pulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.06); filter: brightness(1.15); }
  100% { transform: scale(1); filter: none; }
}

/* ── FAQ ── */
.faq__list {
  max-width: 680px;
  margin-inline: auto;
}

.faq__item {
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.faq__item:first-child {
  border-top: 1px solid var(--border);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 1.25rem 1.15rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── CTA banner ── */
.cta-banner {
  padding: 5rem 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
  border-top: 1px solid var(--border);
}

.cta-banner__title {
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 0.85rem;
}

.cta-banner__text {
  color: var(--text-muted);
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 2rem;
}

/* ── Auth pages ── */
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 6rem 1rem 3rem;
}

.auth-card {
  width: min(400px, 100%);
  background: var(--bg-card);
  border: 1px solid var(--border-yellow);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

.auth-card__title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  color: var(--accent);
}

.auth-card__subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.auth-message {
  font-size: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.auth-message--error {
  background: rgba(255, 80, 80, 0.12);
  border: 1px solid rgba(255, 80, 80, 0.35);
  color: #ff8a8a;
}

.auth-message--success {
  background: var(--accent-dim);
  border: 1px solid var(--border-yellow);
  color: var(--accent);
}

.auth-divider {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 1.25rem 0;
  position: relative;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 42%;
  height: 1px;
  background: var(--border);
}

.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

.google-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color var(--transition);
}

.google-btn:hover {
  border-color: var(--border-yellow);
}

.google-btn img {
  width: 18px;
  height: 18px;
}

.auth-footer {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--accent);
}

/* ── Form ── */
.form__group {
  margin-bottom: 1.1rem;
}

.form__label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

.form__input {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.75rem 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

.form__input:focus {
  border-color: var(--border-yellow);
}

.form__password-wrap {
  position: relative;
}

.form__password-wrap .form__input {
  padding-right: 2.75rem;
}

.form__password-toggle {
  position: absolute;
  right: 0.45rem;
  top: 50%;
  transform: translateY(-50%);
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  display: grid;
  place-items: center;
  border-radius: 6px;
  padding: 0;
}

.form__password-toggle:hover,
.form__password-toggle:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  background: var(--bg-elevated);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr auto auto;
  align-items: start;
  gap: 2rem;
}

.footer__nav-side {
  display: flex;
  gap: 2rem;
  align-items: start;
}

.footer__brand {
  font-weight: 800;
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.footer__tagline {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer__email {
  display: inline-block;
  margin-top: 0.45rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__email:hover {
  color: var(--accent);
}

.footer__socials {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.footer__social {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  background: var(--bg-card);
  transition: color var(--transition), border-color var(--transition), transform var(--transition);
}

.footer__social:hover {
  color: var(--accent);
  border-color: var(--border-yellow);
  transform: translateY(-2px);
}

.footer__social svg {
  width: 17px;
  height: 17px;
  display: block;
}

.footer__col-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--accent);
}

.footer__bottom {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.legal-page {
  padding-top: 6.5rem;
}

.legal-page__inner {
  max-width: 760px;
}

.legal-page__updated {
  margin: -0.5rem 0 2rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.legal-content h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
}

.legal-content h3 {
  margin: 1.35rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

.legal-content p,
.legal-content li {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.legal-content p + p {
  margin-top: 0.85rem;
}

.legal-content ul {
  margin: 0.75rem 0 1rem;
  padding-left: 1.25rem;
}

.legal-content li + li {
  margin-top: 0.45rem;
}

.legal-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  color: var(--accent-hover);
}

/* ── Loading overlay ── */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-overlay.active {
  display: flex;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 235, 59, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero__grid,
  .feature-block,
  .testimonials,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .feature-block--reverse .feature-block__visual,
  .feature-block--reverse .feature-block__content {
    order: unset;
  }

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 1.25rem;
    text-align: left;
  }

  .footer__brand-block {
    grid-column: 1 / -1;
    text-align: center;
  }

  .footer__socials {
    justify-content: center;
  }

  .footer__nav-explore,
  .footer__nav-side {
    justify-self: stretch;
  }

  .footer__nav-explore {
    padding-left: 1.25rem;
  }

  .footer__nav-side {
    flex-direction: column;
    gap: 1.25rem;
  }

  .footer__links {
    align-items: flex-start;
  }

  .footer__bottom {
    justify-content: center;
    text-align: center;
  }

  .compound {
    width: 100vw;
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
  }

  .compound__slide {
    flex-basis: min(88vw, 420px);
    aspect-ratio: 16 / 10;
    min-height: 210px;
    max-height: 260px;
  }

  .compound__math {
    width: 100%;
    justify-content: flex-end;
    padding: 0.9rem 1rem 1rem;
    background: linear-gradient(to top, rgba(10, 10, 16, 0.96) 0%, rgba(10, 10, 16, 0.78) 55%, transparent 100%);
  }

  .compound__shade {
    background: linear-gradient(to top, rgba(10, 10, 16, 0.55) 0%, transparent 50%);
  }

  .compound__nav {
    width: 48px;
    height: 48px;
    font-size: 1.65rem;
  }

  .compound__note {
    display: none;
  }
}

@media (max-width: 768px) {
  .navbar {
    background: #0a0a10;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: none;
  }

  .navbar--scrolled {
    background: #0a0a10;
  }

  .navbar__toggle {
    display: flex;
    z-index: 102;
  }

  .navbar.navbar--menu-open {
    background: #0a0a10;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .navbar__nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 5.5rem 1.5rem 2rem;
    background: #0a0a10;
    background-color: #0a0a10;
    visibility: hidden;
    pointer-events: none;
    opacity: 1;
    transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    transition: none;
    z-index: 101;
  }

  .navbar__nav::before {
    content: "";
    position: absolute;
    inset: 0;
    background: #0a0a10;
    z-index: -1;
  }

  .navbar__nav--open {
    visibility: visible;
    pointer-events: auto;
  }

  .navbar__link {
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
  }

  .navbar__actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin: 1.25rem 0 0;
  }

  .navbar__btn {
    width: 100%;
    padding: 0.85rem 1rem;
  }

  .navbar__cta {
    margin-top: 1rem;
  }

  body.menu-open {
    overflow: hidden;
  }

  /* Let settings panel extend past the demo frame on small screens */
  .demo-player {
    overflow: visible;
  }

  .demo-player__screen {
    overflow: visible;
  }

  .demo-player__scene {
    overflow: hidden;
    border-radius: 0 0 16px 16px;
  }

  .demo-settings-panel {
    z-index: 8;
  }

  /* Homepage mobile layout */
  body:has(.hero--home) .hero--home {
    text-align: center;
    padding-top: 6.5rem;
    padding-bottom: 3rem;
  }

  body:has(.hero--home) .hero__title,
  body:has(.hero--home) .hero__eyebrow {
    text-align: center;
  }

  body:has(.hero--home) .hero__subtitle,
  body:has(.hero--home) .hero__platforms,
  body:has(.hero--home) .section__eyebrow,
  body:has(.hero--home) .feature-block__label,
  body:has(.hero--home) #features .feature-block__text,
  body:has(.hero--home) .feature-block--reverse .feature-block__text,
  body:has(.hero--home) #pricing > .container > .section__subtitle,
  body:has(.hero--home) .cta-banner__text {
    display: none;
  }

  body:has(.hero--home) .hero__actions {
    flex-wrap: nowrap;
    justify-content: center;
    gap: 0.55rem;
  }

  body:has(.hero--home) .hero__actions .btn {
    flex: 1 1 0;
    min-width: 0;
    padding: 0.75rem 0.55rem;
    font-size: 0.72rem;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }

  body:has(.hero--home) .section__title,
  body:has(.hero--home) .section__subtitle,
  body:has(.hero--home) .feature-block__content,
  body:has(.hero--home) .feature-block__title,
  body:has(.hero--home) .feature-list,
  body:has(.hero--home) .cta-banner,
  body:has(.hero--home) .cta-banner__title,
  body:has(.hero--home) .faq__list,
  body:has(.hero--home) .testimonial,
  body:has(.hero--home) .pricing-card {
    text-align: center;
  }

  body:has(.hero--home) .compound__math {
    padding: 0.95rem 1.1rem 1.1rem 20%;
    align-items: flex-start;
  }

  body:has(.hero--home) .feature-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 22rem;
    margin-inline: auto;
  }

  body:has(.hero--home) .feature-list li {
    width: 100%;
    box-sizing: border-box;
    padding-left: 0;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 0.45rem;
    text-align: left;
  }

  body:has(.hero--home) .feature-list li::before {
    position: static;
    flex-shrink: 0;
    width: 1em;
    text-align: center;
    line-height: 1.45;
  }

  body:has(.hero--home) .section {
    padding: 3.5rem 0;
  }

  body:has(.hero--home) .cta-banner {
    padding: 3.25rem 0;
  }

  body:has(.hero--home) .container {
    width: min(1120px, 100%);
    padding-inline: 1.35rem;
  }

  body:has(.hero--home) .navbar__inner {
    width: min(1120px, 100%);
    padding-inline: 1.35rem;
  }

  body:has(.hero--home) .pricing-features {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  body:has(.hero--home) .pricing-features li {
    text-align: center;
    padding-left: 0;
  }

  body:has(.hero--home) .pricing-features li::before {
    display: none;
  }

  body:has(.hero--home) .testimonial__author {
    justify-content: center;
  }

  body:has(.hero--home) .demo-player-wrap {
    margin-top: 1.75rem;
  }

  body:has(.hero--home) .demo-cue {
    display: none;
  }

  body:has(.hero--home) .faq__question,
  body:has(.hero--home) .faq__answer {
    text-align: center;
  }

  /* Supported shows — mobile */
  body:has(#showsGrid) .shows-hero .section__subtitle,
  body:has(#showsGrid) .shows-count {
    display: none;
  }

  .footer__tagline {
    display: none;
  }
}

/* Review page */
.review-gate {
  text-align: center;
  max-width: 560px;
  margin-inline: auto;
}

.review-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.review-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.review-stat__value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}

.review-stat__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.session-setup {
  margin: 0 0 1.15rem;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.55rem;
}

.session-setup__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
}

.session-setup__toggle:hover {
  border-color: var(--border-yellow);
  color: var(--accent);
}

.session-setup__toggle[aria-expanded="true"] {
  border-color: var(--border-yellow);
  color: var(--accent);
  background: var(--accent-dim);
}

.session-setup__chevron {
  transition: transform 0.2s ease;
}

.session-setup__toggle[aria-expanded="true"] .session-setup__chevron {
  transform: rotate(180deg);
}

.session-setup__panel {
  display: grid;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
  text-align: left;
}

.session-setup__panel[hidden] {
  display: none;
}

.session-setup__manual {
  display: grid;
  gap: 1rem;
}

.session-setup__manual[hidden] {
  display: none;
}

.session-setup__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
}

.session-setup__label {
  min-width: 6.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.session-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.1rem;
}

.session-check {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.session-check input {
  accent-color: var(--accent);
  width: 1rem;
  height: 1rem;
}

.session-setup__summary {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.session-empty {
  margin: 0 0 1.25rem;
  text-align: center;
  color: var(--text-muted);
}

.review-tabs {
  display: flex;
  gap: 0.5rem;
}

.review-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.review-toolbar__controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.review-tab {
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-weight: 700;
  cursor: pointer;
}

.review-tab--active {
  border-color: var(--border-yellow);
  color: var(--accent);
  background: var(--accent-dim);
}

.script-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.script-toggle__btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.5rem 0.95rem;
  cursor: pointer;
}

.script-toggle__btn--active {
  background: var(--accent);
  color: #0a0a10;
}

.review-panel {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
}

.study-progress {
  margin-bottom: 1.25rem;
}

.study-progress__track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.study-progress__fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 0.25s ease;
}

.study-progress__label {
  margin-top: 0.45rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
  font-weight: 600;
}

.flash-stage {
  position: relative;
}

.flash-stage.is-complete .flash-study {
  filter: blur(1.5px);
  opacity: 0.35;
  pointer-events: none;
  user-select: none;
}

.flash-done-banner {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  padding: 1rem;
  pointer-events: auto;
}

.flash-done-banner[hidden] {
  display: none !important;
}

.flash-done-banner__card {
  position: relative;
  z-index: 6;
  width: min(420px, 100%);
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(14, 14, 22, 0.96);
  box-shadow: var(--shadow);
  pointer-events: auto;
  animation: flash-done-in 0.35s ease;
}

.flash-done-banner__card .btn {
  pointer-events: auto;
  cursor: pointer;
}

@keyframes flash-done-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.flash-study {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: center;
}

.nav-arrow {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background var(--transition), opacity var(--transition), border-color var(--transition);
}

.nav-arrow:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-yellow);
}

.nav-arrow--disabled,
.nav-arrow:disabled {
  opacity: 0.5;
  cursor: default;
}

.flashcard {
  all: unset;
  box-sizing: border-box;
  display: block;
  width: 100%;
  perspective: 1400px;
  cursor: pointer;
  min-height: 280px;
}

.flashcard__inner {
  position: relative;
  width: 100%;
  min-height: 280px;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.flashcard__inner.is-flipped,
.flashcard--flipped .flashcard__inner {
  transform: rotateY(180deg);
}

.flashcard__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem 1.5rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background:
    linear-gradient(160deg, rgba(255, 235, 59, 0.06), transparent 42%),
    var(--bg-card);
  box-shadow: var(--shadow);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  text-align: center;
}

.flashcard__face--back {
  transform: rotateY(180deg);
}

.flashcard__hint {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
}

.flashcard__text {
  font-size: clamp(2rem, 6vw, 3.1rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  word-break: break-word;
}

.flashcard__text--answer {
  font-size: clamp(1.45rem, 4vw, 2.2rem);
}

.flashcard__sub {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 600;
  min-height: 1.2em;
}

.flashcard__tap {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.study-done {
  text-align: center;
  padding: 3rem 1.25rem;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.study-done__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(185, 246, 202, 0.15);
  color: #b9f6ca;
  font-size: 1.8rem;
  font-weight: 800;
}

.study-done__title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
}

.study-done__text {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.learn-study {
  max-width: 640px;
  margin-inline: auto;
}

.learn__prompt-label {
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.learn__prompt {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 1.5rem;
  line-height: 1.3;
  word-break: break-word;
}

.learn__choices {
  display: grid;
  gap: 0.75rem;
}

.learn__choice {
  width: 100%;
  text-align: left;
  padding: 1rem 1.15rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 1rem;
  font-weight: 650;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform 0.12s ease;
}

.learn__choice:hover:not(:disabled) {
  border-color: var(--border-yellow);
  background: rgba(255, 235, 59, 0.06);
}

.learn__choice:disabled {
  cursor: default;
}

.learn__choice--correct {
  border-color: rgba(185, 246, 202, 0.65);
  background: rgba(185, 246, 202, 0.12);
  color: #b9f6ca;
}

.learn__choice--wrong {
  border-color: rgba(255, 138, 128, 0.65);
  background: rgba(255, 138, 128, 0.12);
  color: #ff8a80;
}

.learn__feedback {
  margin-top: 1rem;
  text-align: center;
  font-weight: 700;
}

.learn__continue-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 1.5rem;
  min-height: 52px;
}

.learn__continue {
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s ease;
}

.learn__continue-wrap.is-visible .learn__continue {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.learn__continue:disabled {
  cursor: default;
}

.learn__feedback--ok {
  color: #b9f6ca;
}

.learn__feedback--bad {
  color: #ff8a80;
}

@media (max-width: 720px) {
  .review-stats {
    grid-template-columns: 1fr;
  }

  .session-setup__row {
    flex-direction: column;
    align-items: flex-start;
  }

  .flash-study {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  #flashcard {
    grid-column: 1 / -1;
    order: 1;
    min-height: 240px;
  }

  .flashcard__inner {
    min-height: 240px;
  }

  #flashPrevBtn {
    order: 2;
    justify-self: stretch;
    width: 100%;
    border-radius: 12px;
  }

  #flashNextBtn {
    order: 3;
    justify-self: stretch;
    width: 100%;
    border-radius: 12px;
  }
}

/* Supported shows */
.shows-hero {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  margin-bottom: 1.75rem;
}

.shows-hero__logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 6px;
  flex-shrink: 0;
}

.shows-count {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.shows-toolbar {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
  max-width: 520px;
}

.shows-search-label {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.shows-search-input {
  width: 100%;
  padding: 0.72rem 0.82rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  outline: none;
}

.shows-search-input:focus {
  border-color: var(--border-yellow);
  box-shadow: 0 0 0 2px rgba(255, 235, 59, 0.18);
}

.shows-grid {
  display: grid;
  gap: 1rem;
}

.shows-group {
  display: grid;
  gap: 0.75rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--border);
}

.shows-group__title {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.shows-group__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.85rem;
}

.shows-empty {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-muted);
  background: var(--bg-card);
}

.show-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.show-card:link,
.show-card:visited,
.show-card:hover,
.show-card:active,
.show-card:focus {
  color: inherit;
  text-decoration: none;
}

.show-card:hover {
  border-color: var(--border-yellow);
  background: rgba(255, 235, 59, 0.05);
  transform: translateY(-1px);
}

.show-card__media {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.show-card__media img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.show-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.show-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.show-card__meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}