/* ═══════════════════════════════════════════════════════
   付费墙样式 — ⑤→⑥ 渐变过渡 + 解锁卡片
   ═══════════════════════════════════════════════════════ */

/* ── Paywall Container ── */
.paywall-container {
  position: relative;
  margin-top: var(--space-xl);
}

/* Hidden content behind paywall */
.paywall-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s var(--ease-out-expo),
              opacity 0.4s var(--ease-out-expo);
}

.paywall-content.unlocked {
  max-height: 20000px;
  opacity: 1;
}

/* ── Gradient fade ── */
.paywall-fade {
  position: relative;
  height: 80px;
  margin-top: -80px;
  background: linear-gradient(to bottom, transparent 0%, var(--bg) 85%);
  z-index: 2;
  pointer-events: none;
  transition: opacity 0.3s;
}

.paywall-content.unlocked ~ .paywall-fade,
.paywall-container.unlocked .paywall-fade {
  opacity: 0;
  height: 0;
  margin-top: 0;
}

/* ── Paywall Card ── */
.paywall-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  margin: var(--space-lg) 0;
  z-index: 3;
  position: relative;
}

.paywall-card .lock-icon {
  font-size: 2.2em;
  margin-bottom: var(--space-sm);
}

.paywall-card h3 {
  font-size: 1.2em;
  color: var(--text-high);
  margin-bottom: var(--space-xs);
}

.paywall-card .locked-modules {
  color: var(--text-muted);
  font-size: 0.9em;
  margin-bottom: var(--space-lg);
}

/* ── Price Buttons ── */
.paywall-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.paywall-btn {
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-size: 0.95em;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--duration-fast);
  text-align: center;
  min-width: 180px;
}

.paywall-btn-single {
  background: var(--surface);
  border: 2px solid var(--accent);
  color: var(--accent);
}

.paywall-btn-single:hover {
  background: var(--accent-dim);
  border-color: #79b8ff;
  color: #79b8ff;
}

.paywall-btn-all {
  background: var(--purple);
  border: 2px solid var(--purple);
  color: #fff;
}

.paywall-btn-all:hover {
  background: #b380f8;
  border-color: #b380f8;
}

.paywall-btn .price {
  display: block;
  font-size: 1.3em;
  margin-bottom: 2px;
}

.paywall-btn .price-label {
  display: block;
  font-size: 0.75em;
  font-weight: 400;
  opacity: 0.8;
}

/* Already unlocked hint */
.paywall-unlocked-hint {
  color: var(--green);
  font-size: 0.85em;
  margin-top: var(--space-md);
  display: none;
}

.paywall-unlocked-hint.show {
  display: block;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .paywall-actions {
    flex-direction: column;
    align-items: center;
  }

  .paywall-btn {
    min-width: 100%;
    max-width: 320px;
  }
}