Calendar/wwwroot/css/calendar.css

/* Base CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Grid measurements */
    --hour-height: 60px;
    --minute-height: 1px;
    --snap-interval: 15;
    --day-column-min-width: 250px;
    --week-days: 7;
    
    /* Time boundaries */
    --day-start-hour: 7;
    --day-end-hour: 19;
    --work-start-hour: 8;
    --work-end-hour: 17;
    
    /* Colors */
    --color-primary: #2196f3;
    --color-grid-line: #e0e0e0;
    --color-grid-line-light: rgba(0, 0, 0, 0.03);
    --color-work-hours: rgba(0, 100, 0, 0.02);
    --color-current-time: #ff0000;
    
    /* Event colors */
    --color-event-meeting: #e3f2fd;
    --color-event-meeting-border: #2196f3;
    --color-event-meal: #fff3e0;
    --color-event-meal-border: #ff9800;
    --color-event-work: #f3e5f5;
    --color-event-work-border: #9c27b0;
    
    /* UI colors */
    --color-background: #ffffff;
    --color-surface: #f5f5f5;
    --color-text: #333333;
    --color-text-secondary: #666666;
    --color-border: #e0e0e0;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-surface);
}

/* Custom elements default display */
swp-calendar,
swp-calendar-nav,
swp-calendar-container,
swp-time-axis,
swp-week-header,
swp-scrollable-content,
swp-time-grid,
swp-day-columns,
swp-day-column,
swp-events-layer,
swp-event,
swp-loading-overlay,
swp-week-container,
swp-grid-lines {
    display: block;
}

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

/* Navigation bar */
swp-calendar-nav {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 20px;
    padding: 12px 16px;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

swp-nav-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

swp-nav-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    background: var(--color-background);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 150ms ease;
    min-width: 40px;
    height: 36px;
}

swp-nav-button:hover {
    background: var(--color-surface);
    border-color: var(--color-text-secondary);
}

/* Search container */
swp-search-container {
    display: flex;
    align-items: center;
    position: relative;
    justify-self: end;
}

swp-search-icon {
    position: absolute;
    left: 12px;
    pointer-events: none;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
}

swp-search-icon svg {
    width: 16px;
    height: 16px;
}

swp-search-container input[type="search"] {
    padding: 8px 36px 8px 36px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: var(--color-surface);
    font-size: 0.875rem;
    width: 200px;
    transition: all 150ms ease;
}

swp-search-container input[type="search"]::-webkit-search-cancel-button {
    display: none;
}

swp-search-container input[type="search"]:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-background);
    width: 250px;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

swp-search-container input[type="search"]::placeholder {
    color: var(--color-text-secondary);
}

swp-search-clear {
    position: absolute;
    right: 8px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: all 150ms ease;
    color: var(--color-text-secondary);
}

swp-search-clear:hover {
    background: rgba(0, 0, 0, 0.1);
}

swp-search-clear svg {
    width: 12px;
    height: 12px;
}

swp-search-clear[hidden] {
    display: none;
}

swp-view-button {
    padding: 8px 16px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 150ms ease;
}

swp-view-button:not(:last-child) {
    border-right: 1px solid var(--color-border);
}

swp-view-button[data-active="true"] {
    background: var(--color-primary);
    color: white;
}

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

/* Week container for sliding */
swp-week-container {
    grid-column: 2;
    display: grid;
    grid-template-rows: auto 1fr;
    position: relative;
    width: 100%;
    transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

swp-week-container.slide-out-left {
    transform: translateX(-100%);
}

swp-week-container.slide-out-right {
    transform: translateX(100%);
}

swp-week-container.slide-in-left {
    transform: translateX(-100%);
}

swp-week-container.slide-in-right {
    transform: translateX(100%);
}

/* Time axis */
swp-time-axis {
    grid-column: 1;
    grid-row: 1;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    position: sticky;
    left: 0;
    z-index: 4;
    padding-top: 80px; /* Match header height */
}

swp-hour-marker {
    height: var(--hour-height);
    padding: 0 8px 8px 8px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: flex-start;
    position: relative;
}

swp-hour-marker::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 {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 3;
    height: 80px; /* Fixed height */
}

swp-day-header {
    padding: 12px;
    text-align: center;
    border-right: 1px solid var(--color-grid-line);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

swp-day-header: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;
}

swp-day-header[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 {
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    position: relative;
}

/* Time grid */
swp-time-grid {
    position: relative;
    height: calc(12 * var(--hour-height));
}

swp-time-grid::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;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent,
        transparent calc(var(--hour-height) / 4 - 1px),
        rgba(0, 0, 0, 0.03) calc(var(--hour-height) / 4 - 1px),
        rgba(0, 0, 0, 0.03) calc(var(--hour-height) / 4)
    );
}

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

swp-day-column {
    position: relative;
    border-right: 1px solid var(--color-grid-line);
}

swp-day-column:last-child {
    border-right: none;
}

swp-events-layer {
    position: absolute;
    inset: 0;
}

/* Events */
swp-event {
    position: absolute;
    border-radius: 4px;
    overflow: hidden;
    cursor: move;
    transition: box-shadow 150ms ease, transform 150ms ease;
    z-index: 10;
    left: 1px;
    right: 1px;
    padding: 8px;
}

swp-event[data-type="meeting"] {
    background: var(--color-event-meeting);
    border-left: 4px solid var(--color-event-meeting-border);
}

swp-event[data-type="meal"] {
    background: var(--color-event-meal);
    border-left: 4px solid var(--color-event-meal-border);
}

swp-event[data-type="work"] {
    background: var(--color-event-work);
    border-left: 4px solid var(--color-event-work-border);
}

swp-event:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
    z-index: 20;
}

swp-event-time {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.8;
    margin-bottom: 4px;
}

swp-event-title {
    display: block;
    font-size: 0.875rem;
    line-height: 1.3;
}

/* Loading */
swp-loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

swp-loading-overlay[hidden] {
    display: none;
}

swp-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Week info styles */
swp-week-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

swp-week-number {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

swp-date-range {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

swp-view-selector {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}