/* ==========================================================================
   日历组件 (Calendar)
   说明：
   - 提供月视图日历、日期选择、占用信息、容量限制、加载态等能力。
   - 样式设计遵循 zuoekai-ui 的 token / 亮暗模式 / 小屏适配规范。
   - 类名采用 zuoekai-calendar 前缀，避免旧版 calendar-* 全局类名污染。
   ========================================================================== */

:root {
  --zuoekai-calendar-bg: var(--zuoekai-color-surface-panel);
  --zuoekai-calendar-surface-soft: color-mix(in srgb, var(--zuoekai-color-surface-panel) 92%, var(--zuoekai-color-brand-50) 8%);
  --zuoekai-calendar-border: var(--zuoekai-color-border);
  --zuoekai-calendar-border-strong: var(--zuoekai-color-border-strong);
  --zuoekai-calendar-text: var(--zuoekai-color-text);
  --zuoekai-calendar-text-secondary: var(--zuoekai-color-text-secondary);
  --zuoekai-calendar-text-muted: var(--zuoekai-color-text-muted);
  --zuoekai-calendar-hover-bg: color-mix(in srgb, var(--zuoekai-color-brand-500) 8%, var(--zuoekai-color-surface-panel) 92%);
  --zuoekai-calendar-today-bg: color-mix(in srgb, var(--zuoekai-color-brand-500) 14%, var(--zuoekai-color-surface-panel) 86%);
  --zuoekai-calendar-today-border: color-mix(in srgb, var(--zuoekai-color-brand-600) 70%, white 30%);
  --zuoekai-calendar-selected-bg: var(--zuoekai-gradient-primary);
  --zuoekai-calendar-selected-text: var(--zuoekai-color-text-inverse);
  --zuoekai-calendar-weekend-bg: color-mix(in srgb, var(--zuoekai-color-error-600) 7%, var(--zuoekai-color-surface-panel) 93%);
  --zuoekai-calendar-weekend-text: color-mix(in srgb, var(--zuoekai-color-error-600) 84%, black 16%);
  --zuoekai-calendar-disabled-bg: color-mix(in srgb, var(--zuoekai-color-surface-page) 82%, transparent 18%);
  --zuoekai-calendar-disabled-text: var(--zuoekai-color-text-disabled);
  --zuoekai-calendar-other-month-bg: color-mix(in srgb, var(--zuoekai-color-surface-page) 76%, transparent 24%);
  --zuoekai-calendar-shadow: var(--zuoekai-shadow-sm);
  --zuoekai-calendar-shadow-hover: var(--zuoekai-shadow-md);
  --zuoekai-calendar-user-1: linear-gradient(135deg, #3b82f6, #1d4ed8);
  --zuoekai-calendar-user-2: linear-gradient(135deg, #f59e0b, #d97706);
  --zuoekai-calendar-user-3: linear-gradient(135deg, #10b981, #047857);
  --zuoekai-calendar-user-4: linear-gradient(135deg, #ef4444, #dc2626);
  --zuoekai-calendar-user-5: linear-gradient(135deg, #8b5cf6, #7c3aed);
  --zuoekai-calendar-user-6: linear-gradient(135deg, #06b6d4, #0891b2);
  --zuoekai-calendar-user-7: linear-gradient(135deg, #ec4899, #db2777);
  --zuoekai-calendar-user-8: linear-gradient(135deg, #84cc16, #65a30d);
}

.zuoekai-calendar {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  background: var(--zuoekai-calendar-bg);
  border: 1px solid var(--zuoekai-calendar-border);
  border-radius: var(--zuoekai-radius-lg);
  box-shadow: var(--zuoekai-shadow-md, 0 4px 16px rgba(0, 0, 0, 0.10));
  overflow: hidden;
  transition:
    box-shadow var(--zuoekai-motion-duration-normal) var(--zuoekai-motion-ease-out),
    transform var(--zuoekai-motion-duration-normal) var(--zuoekai-motion-ease-out);
}

/* 日历整体 hover：微上浮 + 品牌光晕阴影，与卡片风格统一 */
.zuoekai-calendar:hover {
  box-shadow: var(--zuoekai-shadow-brand-glow, 0 10px 22px rgba(79, 70, 229, 0.28));
  transform: translateY(-2px);
}

/* 日历头部 - 品牌渐变 banner 风格（与 card header--banner 统一） */
.zuoekai-calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px 28px;             /* 底部留出空间供下方内容覆盖 */
  background: var(--zuoekai-gradient-primary);
  border-bottom: none;
  position: relative;
  box-shadow:
    0 6px 20px rgba(79, 70, 229, 0.35),
    0 2px 6px rgba(0, 0, 0, 0.12);
}

/* 导航按钮 - 白色半透明风格（配合渐变 banner） */
.zuoekai-calendar__nav-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--zuoekai-radius-md);
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  cursor: pointer;
  transition:
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    transform var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-calendar__nav-button:hover {
  background: rgba(255, 255, 255, 0.28);
  border-color: rgba(255, 255, 255, 0.45);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

.zuoekai-calendar__nav-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  box-shadow: none;
}

.zuoekai-calendar__title-wrap {
  flex: 1;
  min-width: 0;
  text-align: center;
}

/* 标题 - 白色（配合渐变 banner） */
.zuoekai-calendar__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
}

/* 副标题 - 半透明白色 */
.zuoekai-calendar__subtitle {
  margin: 4px 0 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
}

.zuoekai-calendar__weekdays,
.zuoekai-calendar__days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

/* weekdays 区域 - 白色卡片覆盖 banner 底部，形成层叠冲击感 */
.zuoekai-calendar__weekdays {
  padding: 0 8px;
  background: var(--zuoekai-calendar-surface-soft);
  border-bottom: 1px solid var(--zuoekai-calendar-border);
  position: relative;
  z-index: 1;
  margin-top: -12px;
  border-top-left-radius: var(--zuoekai-radius-lg);
  border-top-right-radius: var(--zuoekai-radius-lg);
  box-shadow:
    0 -6px 16px rgba(0, 0, 0, 0.12),
    0 -2px 4px rgba(0, 0, 0, 0.06);
}

.zuoekai-calendar__weekday {
  padding: 12px 4px;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--zuoekai-calendar-text-secondary);
}

.zuoekai-calendar__weekday:nth-child(6),
.zuoekai-calendar__weekday:nth-child(7) {
  color: var(--zuoekai-calendar-weekend-text);
}

.zuoekai-calendar__body {
  position: relative;
}

.zuoekai-calendar__days {
  gap: 4px;
  padding: 8px;
  min-height: 360px;
  background: var(--zuoekai-calendar-bg);
}

.zuoekai-calendar__day {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  min-height: 90px;
  padding: 8px 6px;
  border: 1px solid transparent;
  border-radius: var(--zuoekai-radius-md);
  background: var(--zuoekai-calendar-bg);
  color: var(--zuoekai-calendar-text);
  cursor: pointer;
  overflow: hidden;
  transition:
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    transform var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-calendar__day:hover:not(.zuoekai-calendar__day--disabled):not(.zuoekai-calendar__day--other-month) {
  background: var(--zuoekai-calendar-hover-bg);
  border-color: var(--zuoekai-calendar-border-strong);
  box-shadow: var(--zuoekai-calendar-shadow-hover);
  transform: translateY(-1px);
}

.zuoekai-calendar__day--other-month {
  background: var(--zuoekai-calendar-other-month-bg);
  color: var(--zuoekai-calendar-text-muted);
  opacity: 0.42;
  cursor: default;
}

.zuoekai-calendar__day--disabled {
  background: var(--zuoekai-calendar-disabled-bg);
  color: var(--zuoekai-calendar-disabled-text);
  cursor: not-allowed;
}

.zuoekai-calendar__day--disabled::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 4px,
    color-mix(in srgb, var(--zuoekai-color-border) 38%, transparent 62%) 4px,
    color-mix(in srgb, var(--zuoekai-color-border) 38%, transparent 62%) 8px
  );
  opacity: 0.18;
  pointer-events: none;
}

.zuoekai-calendar__day--today {
  background: var(--zuoekai-calendar-today-bg);
  border-color: var(--zuoekai-calendar-today-border);
}

.zuoekai-calendar__day--today .zuoekai-calendar__day-number::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  border-radius: 50%;
  vertical-align: middle;
  background: var(--zuoekai-calendar-today-border);
}

.zuoekai-calendar__day--selected {
  background: var(--zuoekai-calendar-selected-bg);
  border-color: transparent;
  color: var(--zuoekai-calendar-selected-text);
  box-shadow: var(--zuoekai-shadow-brand-glow);
}

.zuoekai-calendar__day--weekend {
  background: var(--zuoekai-calendar-weekend-bg);
  color: var(--zuoekai-calendar-weekend-text);
}

/* 周末被选中时，选中样式优先于周末底色 */
.zuoekai-calendar__day--weekend.zuoekai-calendar__day--selected {
  background: var(--zuoekai-calendar-selected-bg);
  color: var(--zuoekai-calendar-selected-text);
  box-shadow: var(--zuoekai-shadow-brand-glow);
}

.zuoekai-calendar__day--occupied {
  border-color: color-mix(in srgb, var(--zuoekai-color-brand-600) 18%, var(--zuoekai-calendar-border) 82%);
}

.zuoekai-calendar__day--occupied::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--zuoekai-calendar-user-gradient, var(--zuoekai-calendar-user-1));
  opacity: 0.1;
  pointer-events: none;
}

.zuoekai-calendar__day--multiple::after {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--zuoekai-calendar-user-gradient);
  opacity: 0.14;
  border-radius: inherit;
  pointer-events: none;
}

.zuoekai-calendar__day-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 100%;
}

.zuoekai-calendar__day-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.zuoekai-calendar__day-number {
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.zuoekai-calendar__day-capacity {
  font-size: 10px;
  color: inherit;
  opacity: 0.76;
}

.zuoekai-calendar__occupancy {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.zuoekai-calendar__rest-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.zuoekai-calendar__user-tag,
.zuoekai-calendar__account-tag,
.zuoekai-calendar__status-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 11px;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.zuoekai-calendar__user-tag {
  color: #fff;
  font-weight: 700;
  background: var(--zuoekai-calendar-user-1);
}

.zuoekai-calendar__user-tag[data-color-index="1"] { background: var(--zuoekai-calendar-user-1); }
.zuoekai-calendar__user-tag[data-color-index="2"] { background: var(--zuoekai-calendar-user-2); }
.zuoekai-calendar__user-tag[data-color-index="3"] { background: var(--zuoekai-calendar-user-3); }
.zuoekai-calendar__user-tag[data-color-index="4"] { background: var(--zuoekai-calendar-user-4); }
.zuoekai-calendar__user-tag[data-color-index="5"] { background: var(--zuoekai-calendar-user-5); }
.zuoekai-calendar__user-tag[data-color-index="6"] { background: var(--zuoekai-calendar-user-6); }
.zuoekai-calendar__user-tag[data-color-index="7"] { background: var(--zuoekai-calendar-user-7); }
.zuoekai-calendar__user-tag[data-color-index="8"] { background: var(--zuoekai-calendar-user-8); }

.zuoekai-calendar__account-tag {
  background: color-mix(in srgb, var(--zuoekai-color-info-600) 10%, transparent 90%);
  color: var(--zuoekai-color-info-600);
  border: 1px solid color-mix(in srgb, var(--zuoekai-color-info-600) 24%, transparent 76%);
}

.zuoekai-calendar__status-tag {
  border: 1px solid transparent;
}

.zuoekai-calendar__status-tag[data-status="pending"],
.zuoekai-calendar__status-tag[data-status="processing"],
.zuoekai-calendar__status-tag[data-status="pending_admin_approval"] {
  background: color-mix(in srgb, var(--zuoekai-color-warning-600) 12%, transparent 88%);
  color: var(--zuoekai-color-warning-600);
  border-color: color-mix(in srgb, var(--zuoekai-color-warning-600) 24%, transparent 76%);
}

.zuoekai-calendar__status-tag[data-status="approved"],
.zuoekai-calendar__status-tag[data-status="confirmed"] {
  background: color-mix(in srgb, var(--zuoekai-color-success-600) 12%, transparent 88%);
  color: var(--zuoekai-color-success-600);
  border-color: color-mix(in srgb, var(--zuoekai-color-success-600) 24%, transparent 76%);
}

.zuoekai-calendar__status-tag[data-status="rejected"],
.zuoekai-calendar__status-tag[data-status="cancelled"] {
  background: color-mix(in srgb, var(--zuoekai-color-error-600) 12%, transparent 88%);
  color: var(--zuoekai-color-error-600);
  border-color: color-mix(in srgb, var(--zuoekai-color-error-600) 24%, transparent 76%);
}

.zuoekai-calendar__status-tag[data-status="expired"] {
  background: color-mix(in srgb, var(--zuoekai-color-text-muted) 16%, transparent 84%);
  color: var(--zuoekai-calendar-text-muted);
  border-color: color-mix(in srgb, var(--zuoekai-color-text-muted) 20%, transparent 80%);
}

.zuoekai-calendar__helper {
  padding: 12px 16px 16px;
  border-top: 1px solid var(--zuoekai-calendar-border);
  font-size: 12px;
  line-height: 1.6;
  color: var(--zuoekai-calendar-text-secondary);
}

.zuoekai-calendar__loading,
.zuoekai-calendar__empty,
.zuoekai-calendar__error {
  position: absolute;
  inset: 8px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  text-align: center;
  border-radius: var(--zuoekai-radius-md);
  background: color-mix(in srgb, var(--zuoekai-color-surface-panel) 90%, transparent 10%);
  backdrop-filter: blur(6px);
}

.zuoekai-calendar__loading-text,
.zuoekai-calendar__empty-text,
.zuoekai-calendar__error-text {
  margin: 0;
  font-size: 13px;
  color: var(--zuoekai-calendar-text-secondary);
}

.zuoekai-calendar__error-text {
  color: var(--zuoekai-color-error-600);
}

.zuoekai-calendar__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--zuoekai-calendar-border);
}

.zuoekai-calendar__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--zuoekai-calendar-text-secondary);
}

.zuoekai-calendar__legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--zuoekai-calendar-border-strong);
}

.zuoekai-calendar__legend-dot--today { background: var(--zuoekai-calendar-today-border); }
.zuoekai-calendar__legend-dot--selected { background: var(--zuoekai-color-brand-600); }
.zuoekai-calendar__legend-dot--occupied { background: var(--zuoekai-color-info-600); }
.zuoekai-calendar__legend-dot--weekend { background: var(--zuoekai-color-error-600); }

@media (max-width: 768px) {
  .zuoekai-calendar {
    border-radius: var(--zuoekai-radius-md);
  }

  .zuoekai-calendar__header {
    padding: 14px;
  }

  .zuoekai-calendar__nav-button {
    width: 36px;
    height: 36px;
  }

  .zuoekai-calendar__title {
    font-size: 16px;
  }

  .zuoekai-calendar__days {
    gap: 3px;
    padding: 6px;
    min-height: 320px;
  }

  .zuoekai-calendar__day {
    min-height: 78px;
    padding: 6px 4px;
  }

  .zuoekai-calendar__weekday {
    padding: 10px 2px;
    font-size: 11px;
  }

  .zuoekai-calendar__day-number {
    font-size: 13px;
  }

  .zuoekai-calendar__user-tag,
  .zuoekai-calendar__account-tag,
  .zuoekai-calendar__status-tag {
    padding: 2px 5px;
    font-size: 10px;
  }
}

@media (max-width: 560px) {
  .zuoekai-calendar__header {
    gap: 8px;
    padding: 12px;
  }

  .zuoekai-calendar__subtitle {
    display: none;
  }

  .zuoekai-calendar__days {
    min-height: 280px;
  }

  .zuoekai-calendar__day {
    min-height: 66px;
    padding: 5px 3px;
  }

  .zuoekai-calendar__day-capacity {
    display: none;
  }

  .zuoekai-calendar__occupancy {
    gap: 2px;
  }

  .zuoekai-calendar__rest-item {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .zuoekai-calendar__user-tag,
  .zuoekai-calendar__account-tag,
  .zuoekai-calendar__status-tag {
    width: 100%;
    max-width: none;
    padding: 1px 4px;
    font-size: 9px;
  }

  .zuoekai-calendar__legend {
    padding: 10px 12px 14px;
    gap: 6px 10px;
  }
}