Calendar/wwwroot/css/calendar-layout-css.css

/* styles/layout.css */

/* Main calendar container */
swp-calendar {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--color-background);
  position: relative;
}

/* Calendar container grid */
swp-calendar-container {
  flex: 1;
  display: grid;
  grid-template-columns: 60px 1fr;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  position: relative;
}

/* Time axis (left side) */
swp-time-axis {
  grid-column: 1;
  grid-row: 2;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  position: relative;
  z-index: 2;
}

swp-hour-marker {
  height: var(--hour-height);
  padding: 8px;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: flex-start;
  position: relative;
  
  /* Hour line extending into calendar */
  &::after {
    content: '';
    position: absolute;
    top: 0;
    left: 100%;
    width: 100vw;
    height: 1px;
    background: var(--color-grid-line);
    pointer-events: none;
  }
}

/* Week header */
swp-week-header {
  grid-column: 2;
  grid-row: 1;
  display: grid;
  grid-template-columns: repeat(var(--week-days, 7), 1fr);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 3;
}

swp-day-header {
  padding: 12px;
  text-align: center;
  border-right: 1px solid var(--color-grid-line);
  
  &:last-child {
    border-right: none;
  }
  
  swp-day-name {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
  }
  
  swp-day-date {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 4px;
  }
  
  /* Today indicator */
  &[data-today="true"] {
    swp-day-date {
      color: var(--color-primary);
      background: rgba(33, 150, 243, 0.1);
      border-radius: 50%;
      width: 36px;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 4px auto 0;
    }
  }
}

/* Scrollable content */
swp-scrollable-content {
  grid-column: 2;
  grid-row: 2;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  position: relative;
}

/* All-day events container */
swp-allday-container {
  position: sticky;
  top: 0;
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  min-height: 0;
  z-index: 2;
  
  &:not(:empty) {
    padding: 8px 0;
  }
}

/* Time grid */
swp-time-grid {
  position: relative;
  height: calc(var(--total-hours, 12) * var(--hour-height));
  
  /* Work hours background */
  &::before {
    content: '';
    position: absolute;
    top: calc((var(--work-start-hour) - var(--day-start-hour)) * var(--hour-height));
    height: calc((var(--work-end-hour) - var(--work-start-hour)) * var(--hour-height));
    left: 0;
    right: 0;
    background: var(--color-work-hours);
    pointer-events: none;
  }
}

/* Grid lines */
swp-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  
  /* 15-minute intervals */
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent calc(var(--hour-height) / 4 - 1px),
    var(--color-grid-line-light) calc(var(--hour-height) / 4 - 1px),
    var(--color-grid-line-light) calc(var(--hour-height) / 4)
  );
  
  /* Show stronger lines when dragging */
  &[data-dragging="true"] {
    background-image: repeating-linear-gradient(
      to bottom,
      transparent,
      transparent calc(var(--hour-height) / 4 - 1px),
      rgba(33, 150, 243, 0.2) calc(var(--hour-height) / 4 - 1px),
      rgba(33, 150, 243, 0.2) calc(var(--hour-height) / 4)
    );
  }
}

/* Day columns */
swp-day-columns {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(var(--week-days, 7), 1fr);
}

swp-day-column {
  position: relative;
  border-right: 1px solid var(--color-grid-line);
  
  &:last-child {
    border-right: none;
  }
  
  /* Hover effect for empty slots */
  &:hover {
    background: rgba(0, 0, 0, 0.01);
  }
}

/* Events layer */
swp-events-layer {
  position: absolute;
  inset: 0;
  
  /* Layout modes */
  &[data-layout="overlap"] {
    swp-event {
      width: calc(100% - 16px);
      left: 8px;
    }
  }
  
  &[data-layout="side-by-side"] {
    swp-event {
      width: calc(var(--event-width, 100%) - 16px);
      left: calc(8px + var(--event-offset, 0px));
    }
  }
}

/* Current time indicator */
swp-current-time-indicator {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-current-time);
  pointer-events: none;
  z-index: var(--z-current-time);
  
  /* Time label */
  &::before {
    content: attr(data-time);
    position: absolute;
    left: -55px;
    top: -10px;
    background: var(--color-current-time);
    color: white;
    padding: 2px 6px;
    font-size: 0.75rem;
    border-radius: 3px;
    white-space: nowrap;
  }
  
  /* Animated dot */
  &::after {
    content: '';
    position: absolute;
    right: -4px;
    top: -4px;
    width: 10px;
    height: 10px;
    background: var(--color-current-time);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(255, 0, 0, 0.3);
  }
  
  /* Position based on current time */
  top: calc(var(--current-minutes) * var(--minute-height));
}