:root {
  --bg-1: #ffe8f4;
  --bg-2: #e7f7ff;
  --bg-3: #fff7d9;
  --card: rgba(255, 255, 255, 0.9);
  --text: #20283a;
  --muted: #4c5974;
  --ok: #1c8d44;
  --bad: #c43128;
  --accent: #ff4f87;
  --accent-2: #2a9dff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 20%, var(--bg-3) 0, transparent 38%),
    radial-gradient(circle at 88% 12%, var(--bg-2) 0, transparent 36%),
    radial-gradient(circle at 50% 95%, #f6e6ff 0, transparent 42%),
    linear-gradient(145deg, var(--bg-1), #f5fbff 42%, #fff 100%);
}

.page {
  width: min(880px, 94vw);
  margin: 0 auto;
  padding: 26px 0 40px;
}

.card {
  background: var(--card);
  border-radius: 22px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 18px 48px rgba(31, 43, 66, 0.16);
  backdrop-filter: blur(3px);
}

h1,
h2 {
  margin-top: 0;
  margin-bottom: 8px;
  line-height: 1.15;
}

.subtitle {
  margin-top: 0;
  margin-bottom: 16px;
  color: var(--muted);
}

.tag {
  display: inline-flex;
  margin: 0 0 10px;
  padding: 6px 12px;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: 999px;
  background: linear-gradient(120deg, #ffd0e6, #dff4ff);
  color: #2a2b45;
}

.progress-wrap {
  margin-bottom: 20px;
}

.progress-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.progress-bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: #eff2f9;
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.28s ease;
}

.question-text {
  font-size: 1.14rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.answers {
  display: grid;
  gap: 12px;
}

.answer-btn {
  border: 1px solid #d5ddf0;
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff, #f6f9ff);
  color: var(--text);
  padding: 13px 14px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  transition: transform 0.14s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.answer-btn:hover {
  border-color: #ffc0d9;
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 8px 20px rgba(255, 79, 135, 0.16);
}

.answer-btn:active {
  transform: translateY(0);
}

.feedback {
  min-height: 24px;
  font-weight: 700;
  margin-top: 14px;
}

.feedback.ok {
  color: var(--ok);
}

.feedback.bad {
  color: var(--bad);
}

.question-container {
  animation: pop-in 0.3s ease both;
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card.shake {
  animation: shake 0.28s linear;
}

@keyframes shake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
  75% { transform: translateX(-3px); }
  100% { transform: translateX(0); }
}

video {
  width: 100%;
  border-radius: 14px;
  background: #000;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.26);
}

.hidden {
  display: none;
}

@media (max-width: 640px) {
  .card {
    padding: 18px;
  }

  .question-text {
    font-size: 1.05rem;
  }
}