:root {
  --bg-gradient-start: #ffdde1;
  --bg-gradient-end: #ee9ca7;
  --card-bg: #ffffff;
  --accent: #e85a8b;
  --accent-soft: #f8b9cf;
  --accent-dark: #c63c6b;
  --text-main: #2c2c34;
  --text-muted: #5e5e6a;
  --border-soft: #f1c3d3;
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.08);
  --radius-lg: 24px;
  --radius-pill: 999px;
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --max-width: 640px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-main);
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  min-height: 100%;
}

body {
  display: flex;
  justify-content: center;
  align-items: stretch;
}

/* App layout */

.app {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 32px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  text-align: center;
  margin-bottom: 20px;
}

.app-title {
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 2.2rem;
  margin: 0 0 8px;
  color: var(--accent-dark);
  letter-spacing: 0.04em;
}

.app-subtitle {
  margin: 0;
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Card */

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 20px 18px 20px;
  margin: 12px auto 16px;
  max-width: var(--max-width);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-header {
  display: flex;
  justify-content: flex-end;
}

/* Badge / progress */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 600;
}

/* Question area */

.question-container {
  min-height: 90px;
  margin-top: 4px;
  position: relative;
  padding: 8px 0 4px;
}

.question-container.empty #question-text {
  display: none;
}

.question-placeholder {
  margin: 0;
  font-size: 1.0rem;
  color: var(--text-muted);
  text-align: center;
}

.question-text {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.6;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.question-text.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Helper & status */

.helper-text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
}

.status-message {
  margin: 4px 0 0;
  font-size: 0.88rem;
  text-align: center;
  color: var(--accent-dark);
  min-height: 1.3em;
}

/* Buttons */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 8px;
}

.btn {
  border-radius: var(--radius-pill);
  border: none;
  padding: 10px 18px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
  font-weight: 600;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(200, 63, 112, 0.4);
}

.btn-primary:hover:not(:disabled),
.btn-secondary:hover:not(:disabled) {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: #f6f2f6;
  color: var(--accent-dark);
  border: 1px solid var(--border-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px dashed var(--border-soft);
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
  transform: none;
}

/* Footer */

.app-footer {
  text-align: center;
  margin-top: auto;
  padding-top: 12px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.9);
}

/* Responsive */

@media (min-width: 768px) {
  .app {
    padding: 32px 20px 40px;
  }

  .card {
    padding: 24px 28px 22px;
  }

  .app-title {
    font-size: 2.4rem;
  }

  .question-text {
    font-size: 1.2rem;
  }

  .app-subtitle {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .card {
    padding: 18px 14px 16px;
  }

  .controls {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}