:root {
  --gradient-sky: linear-gradient(145deg, #4D7CFE 0%, #213071 100%);
  --surface: rgba(255, 255, 255, 0.94);
  --surface-soft: rgba(255, 255, 255, 0.86);
  --text: #0F244A;
  --muted: #4C5B7A;
  --accent: #FFB347;
  --accent-strong: #F86E51;
  --glow: rgba(77, 124, 254, 0.25);
  --shadow: rgba(15, 36, 74, 0.18);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Quicksand', 'Inter', sans-serif;
  min-height: 100vh;
  background: linear-gradient(180deg, #EEF2FF 0%, #F8FBFF 60%, #E9F0FF 100%);
  color: var(--text);
  line-height: 1.7;
}

a {
  color: inherit;
}

.background-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(77, 124, 254, 0.28), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(255, 179, 71, 0.25), transparent 60%),
    radial-gradient(circle at 50% 80%, rgba(77, 124, 254, 0.28), transparent 60%);
  z-index: 0;
  filter: blur(8px);
}

.hero {
  position: relative;
  background: var(--gradient-sky);
  color: #fff;
  padding: 1.8rem 1.2rem 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 24px 48px rgba(16, 37, 76, 0.35);
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  inset: -60% -10% 30% -10%;
  background: radial-gradient(70% 40% at 50% 20%, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0));
  opacity: 0.6;
}

.hero__branding {
  position: relative;
  z-index: 1;
  flex: 1 1 320px;
}

.hero__home {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.85);
}

.hero__home:hover,
.hero__home:focus-visible {
  color: #fff;
}

.hero h1 {
  margin: 0.4rem 0 0;
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
}

.hero__tagline {
  margin: 0.35rem 0 0;
  max-width: 52ch;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.score-chip {
  padding: 0.7rem 1.1rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(15, 36, 74, 0.08);
  min-width: 120px;
  box-shadow: 0 12px 24px rgba(15, 36, 74, 0.08);
}

.stats-panel {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  justify-content: flex-start;
  padding: 0.5rem 0 0;
}

.score-chip__label {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.score-chip__value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

.app-shell {
  position: relative;
  z-index: 1;
  padding: 2rem clamp(1rem, 4vw, 2.5rem) 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.verse-card {
  background: var(--surface);
  border-radius: 28px;
  padding: 1.8rem;
  box-shadow: 0 20px 40px var(--shadow);
  border: 1px solid rgba(77, 124, 254, 0.15);
}

.verse-card__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.verse-reference {
  font-size: 0.92rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.verse-mode {
  font-size: 0.85rem;
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  background: rgba(77, 124, 254, 0.14);
  color: #2A3D6F;
  font-weight: 600;
}

.verse-text {
  margin: 0;
  font-size: clamp(1.2rem, 2.8vw, 1.5rem);
  line-height: 1.6;
  font-weight: 600;
  color: var(--text);
}

.verse-text .blank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5ch;
  padding: 0.25rem 0.5rem;
  margin: 0 0.2rem;
  border-bottom: 3px solid rgba(77, 124, 254, 0.4);
  border-radius: 12px 12px 0 0;
  background: rgba(77, 124, 254, 0.06);
  font-weight: 700;
}

.verse-text .blank--filled {
  background: rgba(255, 179, 71, 0.15);
  border-color: rgba(255, 179, 71, 0.8);
  color: var(--accent-strong);
}

.choices-panel {
  background: var(--surface-soft);
  border-radius: 24px;
  padding: 1.5rem;
  border: 1px solid rgba(77, 124, 254, 0.12);
  box-shadow: 0 18px 36px var(--shadow);
}

.choices-panel__header h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.choices-panel__header p {
  margin: 0.2rem 0 1rem;
  color: var(--muted);
}

.choices-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.choice-card {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 18px;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(15, 36, 74, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  box-shadow: 0 12px 24px rgba(15, 36, 74, 0.06);
}

.choice-card__label {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.choice-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.choice-option {
  border: 1px solid rgba(15, 36, 74, 0.16);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  transition: all 0.2s ease;
}

.choice-option:hover,
.choice-option:focus-visible {
  border-color: rgba(77, 124, 254, 0.5);
  color: rgba(77, 124, 254, 1);
}

.choice-option.is-selected {
  background: rgba(77, 124, 254, 0.15);
  border-color: rgba(77, 124, 254, 0.7);
  color: #203066;
}

.choice-option.is-correct {
  background: rgba(79, 214, 143, 0.2);
  border-color: rgba(79, 214, 143, 0.8);
  color: #1C5A3D;
}

.choice-option.is-incorrect {
  background: rgba(248, 110, 81, 0.18);
  border-color: rgba(248, 110, 81, 0.8);
  color: #6F1A0F;
}

.action-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
}

.action {
  border: 0;
  border-radius: 18px;
  padding: 0.85rem 1.6rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.action:disabled {
  opacity: 0.5;
  cursor: default;
}

.action--primary {
  background: linear-gradient(135deg, #4D7CFE, #6EA5FF);
  color: #fff;
  box-shadow: 0 16px 32px rgba(77, 124, 254, 0.35);
}

.action--ghost {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(15, 36, 74, 0.12);
  color: var(--text);
  box-shadow: 0 12px 20px rgba(15, 36, 74, 0.1);
}

.action:not(:disabled):hover,
.action:not(:disabled):focus-visible {
  transform: translateY(-2px);
}

.action--share {
  background: #fff;
  border: 1px solid rgba(15, 36, 74, 0.14);
  color: var(--text);
  box-shadow: 0 12px 22px rgba(15, 36, 74, 0.08);
}

.share-block {
  margin: 1rem 0 0.5rem;
}

.share-hint {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.tips-deck {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.tip {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 20px;
  padding: 1.2rem 1.3rem;
  border: 1px solid rgba(15, 36, 74, 0.08);
  box-shadow: 0 12px 24px rgba(15, 36, 74, 0.08);
}

.tip__icon {
  font-size: 1.6rem;
}

.tip__title {
  margin: 0.4rem 0 0.2rem;
  font-size: 1.05rem;
  font-weight: 700;
}

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

.site-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 520px) {
  .score-chip {
    flex: 1 1 120px;
  }

  .choices-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }
}