/* 页面主体内容区 */
.main-content {
  padding: 60px 20px;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 60vh;
}

.content-container {
  background: var(--color-white);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 10px 30px var(--shadow-light);
  text-align: center;
}

.content-title {
  font-family: 'NavFont', "STXingkai", "Xingkai SC", cursive;
  font-size: 36px;
  color: var(--text-color);
  margin-bottom: 20px;
}

.content-desc {
  color: #666;
  font-size: 16px;
  line-height: 1.6;
}

/* ----------------------------------
   时间大卡片 (Time Card)
---------------------------------- */
.time-card {
  background: var(--color-white);
  border-radius: 20px;
  padding: 30px 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.04);
  position: relative;
  display: flex;
  flex-direction: column;
  margin: 0 auto 50px;
  max-width: 900px;
}

/* macOS风格圆点 */
.card-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 30px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.time-card-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* 左侧 */
.time-card-left {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.time-sentence {
  font-family: "Noto Serif SC", "STSong", "SimSun", serif;
  font-size: 32px;
  color: #333;
  line-height: 1.6;
  margin: 0;
  font-weight: 600;
  letter-spacing: 2px;
}

.since-badge {
  display: inline-flex;
  align-items: center;
  background: var(--google-grey-50);
  border-radius: 50px;
  padding: 6px 16px 6px 6px;
  gap: 12px;
  width: fit-content;
  border: 1px solid var(--google-grey-100);
}

.since-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bilibili-pink);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.since-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.since-label {
  font-size: 10px;
  color: #aaa;
  font-weight: 600;
  letter-spacing: 1px;
}

.since-date {
  font-size: 13px;
  color: #555;
  font-weight: 600;
}

/* 右侧 */
.time-card-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 15px;
}

.days-count {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.days-count .number {
  font-size: 80px;
  font-weight: 800;
  color: #2c3e50;
  line-height: 1;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  letter-spacing: -2px;
}

.days-divider {
  width: 40px;
  height: 4px;
  background: var(--paper-red-400);
  margin: 10px 0;
  border-radius: 2px;
}

.days-count .label {
  font-size: 12px;
  color: #aaa;
  letter-spacing: 6px;
  font-weight: 600;
  margin-right: -6px; /* 平衡 letter-spacing 造成的视觉偏移 */
}

.time-details {
  display: flex;
  gap: 25px;
  margin-top: 10px;
}

.time-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.time-unit .number {
  font-size: 22px;
  font-weight: 700;
  color: #333;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: inline-block;
}

@keyframes tickPop {
  0% { transform: translateY(3px); opacity: 0.5; }
  100% { transform: translateY(0); opacity: 1; }
}

.pop-anim {
  animation: tickPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 页面容器 (SPA 架构) */
.page-section {
  display: none;
}
.page-section.active {
  display: block;
}

.placeholder-text {
  text-align: center;
  color: #888;
  font-size: 16px;
  margin: 100px auto;
  letter-spacing: 2px;
  background: var(--glass-bg-light);
  backdrop-filter: blur(10px);
  padding: 30px 40px;
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  width: max-content;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
.placeholder-text i {
  font-size: 24px;
  color: var(--bilibili-pink);
}

/* 内容分隔线：未完 · 待续 */
.content-divider {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 600px;
  margin: 50px auto;
  color: #ccc;
  font-size: 14px;
  letter-spacing: 4px;
}
.content-divider::before,
.content-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(0, 0, 0, 0.05);
}
.content-divider span {
  padding: 0 20px;
}

/* 底部寄语 */
.content-quote {
  font-size: 28px;
  color: #555;
  margin-bottom: 60px;
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  letter-spacing: 2px;
}

.time-unit .label {
  font-size: 10px;
  color: #aaa;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .time-card {
    padding: 30px;
  }
  .time-sentence {
    font-size: 28px;
  }
  .days-count .number {
    font-size: 64px;
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: 30px 15px;
  }
  .time-card-content {
    flex-direction: column;
    gap: 30px;
    align-items: center;
    text-align: center;
  }
  .time-card-left, .time-card-right {
    align-items: center;
  }
  .time-sentence {
    font-size: 24px;
  }
  .days-count {
    align-items: center;
  }
  .days-count .number {
    font-size: 56px;
  }
  .content-quote {
    font-size: 18px;
    margin-bottom: 40px;
    padding: 0 10px;
  }
  .placeholder-text {
    width: 90%;
    box-sizing: border-box;
    font-size: 14px;
    padding: 20px;
    flex-direction: column;
    text-align: center;
  }
}