/* 组件样式 - 卡片、Tab、按钮、抽屉、日历、Toast */

/* ===== 通用按钮 ===== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-body);
  font-weight: var(--weight-medium);
  transition: background-color var(--duration-fast) linear,
              transform var(--duration-fast) linear;
  min-height: 44px;
  cursor: pointer;
}

.button:active {
  transform: scale(0.98);
}

.button--primary {
  background-color: var(--color-tech);
  color: white;
}

.button--primary:active {
  background-color: #1746B0;
}

.button--secondary {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

/* 图标按钮 */
.icon-button {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: background-color var(--duration-fast) linear;
}

.icon-button:active {
  background-color: var(--color-divider);
}

/* ===== 版次切换器 ===== */
.edition-switcher {
  display: flex;
  position: relative;
  background-color: var(--color-divider);
  margin: 0 var(--spacing-lg) var(--spacing-md);
  border-radius: var(--radius-md);
  padding: 3px;
}

.edition-switcher__btn {
  flex: 1;
  padding: var(--spacing-sm) 0;
  font-size: var(--font-caption);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  position: relative;
  z-index: 2;
  transition: color var(--duration-normal) var(--ease-standard);
}

.edition-switcher__btn.is-active {
  color: white;
}

.edition-switcher__indicator {
  position: absolute;
  top: 3px;
  left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background-color: var(--color-tech);
  border-radius: var(--radius-sm);
  transition: transform var(--duration-normal) var(--ease-standard);
  z-index: 1;
}

.edition-switcher__indicator.is-evening {
  transform: translateX(100%);
}

/* ===== 今日导读 ===== */
.greeting-block {
  padding: var(--spacing-lg) 0;
}

.greeting {
  font-size: var(--font-greeting);
  font-weight: var(--weight-medium);
  line-height: 1.4;
  color: var(--color-text-primary);
}

/* ===== 今日总览卡片 ===== */
.briefing-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-card);
}

.briefing-card__title {
  font-size: var(--font-subtitle);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
}

.briefing-card__content {
  font-size: var(--font-body);
  line-height: 1.7;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.top-focus {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px dashed var(--color-border);
}

.top-focus__label {
  font-size: var(--font-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-warning);
  margin-bottom: var(--spacing-sm);
}

.top-focus__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.top-focus__list li {
  position: relative;
  padding-left: var(--spacing-md);
  font-size: var(--font-body);
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.top-focus__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-error);
}

/* ===== 领域 Tab ===== */
.section-tabs {
  position: sticky;
  top: 104px;  /* Header 高度 + 版次切换器高度 */
  z-index: 50;
  display: flex;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-tab);
}

.section-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm) 0;
  font-size: var(--font-caption);
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--duration-normal) var(--ease-standard);
}

.section-tab.is-active {
  color: var(--color-text-primary);
  font-weight: var(--weight-semibold);
}

.section-tab__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-text-tertiary);
  transition: background-color var(--duration-normal) var(--ease-standard);
}

.section-tab.is-active .section-tab__dot[data-color="policy"] { background-color: var(--color-policy); }
.section-tab.is-active .section-tab__dot[data-color="tech"] { background-color: var(--color-tech); }
.section-tab.is-active .section-tab__dot[data-color="livelihood"] { background-color: var(--color-livelihood); }
.section-tab.is-active .section-tab__dot[data-color="global"] { background-color: var(--color-global); }

.section-tabs__indicator {
  position: absolute;
  bottom: 0;
  left: var(--spacing-sm);
  width: calc(25% - var(--spacing-sm) * 2 / 4);
  height: 2px;
  background-color: var(--color-tech);
  border-radius: 1px;
  transition: transform var(--duration-normal) var(--ease-standard);
}

/* ===== 子区块 ===== */
.subsection {
  margin-bottom: var(--spacing-xl);
}

.subsection__title {
  font-size: var(--font-subtitle);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.subsection__title::before {
  content: '';
  width: 3px;
  height: 16px;
  background-color: var(--color-tech);
  border-radius: 2px;
}

/* ===== 重要资讯卡片 ===== */
.highlights-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.highlight-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--duration-fast) linear;
  display: block;
  text-decoration: none;
  color: inherit;
}

.highlight-card:active {
  transform: scale(0.98);
}

.highlight-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-tag);
  font-weight: var(--weight-medium);
  background-color: var(--color-tech-light);
  color: var(--color-tech);
}

.tag--policy { background-color: var(--color-policy-light); color: var(--color-policy); }
.tag--tech { background-color: var(--color-tech-light); color: var(--color-tech); }
.tag--livelihood { background-color: var(--color-livelihood-light); color: var(--color-livelihood); }
.tag--global { background-color: var(--color-global-light); color: var(--color-global); }

.highlight-card__title {
  font-size: var(--font-title);
  font-weight: var(--weight-semibold);
  line-height: 1.4;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.highlight-card__summary {
  font-size: var(--font-body);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.highlight-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-caption);
  color: var(--color-text-tertiary);
}

.highlight-card__source {
  font-weight: var(--weight-medium);
}

.highlight-card__link {
  color: var(--color-link);
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: var(--weight-medium);
}

/* ===== 快速浏览列表 ===== */
.quick-news-list {
  display: flex;
  flex-direction: column;
}

.quick-news-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-divider);
}

.quick-news-item:last-child {
  border-bottom: none;
}

.quick-news-item__tag {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-size: var(--font-small);
  font-weight: var(--weight-medium);
  background-color: var(--color-tech-light);
  color: var(--color-tech);
  min-width: 32px;
  text-align: center;
}

.quick-news-item__content {
  flex: 1;
  min-width: 0;
}

.quick-news-item__title {
  font-size: var(--font-body);
  color: var(--color-text-primary);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quick-news-item__source {
  flex-shrink: 0;
  font-size: var(--font-small);
  color: var(--color-text-tertiary);
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  color: var(--color-text-tertiary);
}

.empty-state__icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state__text {
  font-size: var(--font-body);
}

/* ===== 异常态 ===== */
.error-fallback {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.error-fallback__icon {
  font-size: 48px;
  opacity: 0.6;
}

.error-fallback__message {
  font-size: var(--font-body);
  color: var(--color-text-secondary);
  max-width: 280px;
}

/* ===== 骨架屏 ===== */
.skeleton-screen {
  padding: var(--spacing-lg) 0;
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-divider) 0%,
    var(--color-border) 50%,
    var(--color-divider) 100%
  );
  background-size: 200% 100%;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  animation: shimmer 1.5s linear infinite;
}

.skeleton--greeting {
  height: 32px;
  width: 80%;
}

.skeleton--briefing {
  height: 16px;
  width: 100%;
}

.skeleton--briefing:nth-child(3) {
  width: 90%;
}

.skeleton--tabs {
  height: 40px;
  width: 100%;
  margin: var(--spacing-xl) 0;
}

.skeleton--card {
  height: 120px;
  width: 100%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== 历史抽屉 ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 200;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.drawer-overlay.is-visible {
  opacity: 1;
}

.history-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 85%;
  max-width: 360px;
  background-color: var(--color-surface);
  z-index: 201;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-standard);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-drawer);
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

.history-drawer.is-open {
  transform: translateX(0);
}

.history-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.history-drawer__title {
  font-size: var(--font-subtitle);
  font-weight: var(--weight-semibold);
}

.history-drawer__calendar {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
  -webkit-overflow-scrolling: touch;
}

.history-drawer__footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.history-drawer__tip {
  font-size: var(--font-caption);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xs);
}

.history-drawer__tip--secondary {
  color: var(--color-text-tertiary);
  font-size: var(--font-small);
}

/* ===== 日历组件 ===== */
.calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.calendar__nav-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
}

.calendar__nav-btn:active {
  background-color: var(--color-divider);
}

.calendar__nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.calendar__month {
  font-size: var(--font-subtitle);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}

.calendar__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin-bottom: var(--spacing-sm);
}

.calendar__weekday {
  text-align: center;
  font-size: var(--font-small);
  color: var(--color-text-tertiary);
  padding: var(--spacing-xs) 0;
}

.calendar__days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar__day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: var(--font-caption);
  color: var(--color-text-primary);
  position: relative;
  cursor: pointer;
  transition: background-color var(--duration-fast) linear;
}

.calendar__day:active {
  background-color: var(--color-divider);
}

.calendar__day.is-empty {
  cursor: default;
  pointer-events: none;
}

.calendar__day.is-disabled {
  color: var(--color-text-tertiary);
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.calendar__day.is-today {
  border: 1px solid var(--color-tech);
  font-weight: var(--weight-semibold);
}

.calendar__day.is-selected {
  background-color: var(--color-tech);
  color: white;
}

.calendar__day.is-selected.is-today {
  border-color: white;
}

.calendar__day-dots {
  display: flex;
  gap: 2px;
  margin-top: 2px;
  height: 4px;
}

.calendar__day-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-tech);
}

.calendar__day-dot--morning { background-color: var(--color-warning); }
.calendar__day-dot--evening { background-color: var(--color-global); }

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  bottom: calc(80px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.toast {
  background-color: rgba(17, 24, 39, 0.92);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-caption);
  max-width: 80vw;
  text-align: center;
  box-shadow: var(--shadow-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-normal) var(--ease-standard),
              transform var(--duration-normal) var(--ease-standard);
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast--success { background-color: rgba(16, 185, 129, 0.92); }
.toast--error { background-color: rgba(220, 38, 38, 0.92); }

/* ===== 返回今日按钮 ===== */
.back-to-today {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-tech);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-caption);
  font-weight: var(--weight-medium);
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.3);
  transition: transform var(--duration-fast) linear;
}

.back-to-today:active {
  transform: translateX(-50%) scale(0.95);
}