/* === base.css === */
/**
 * Base styles - CSS variables, container, header, navigation
 */

.tg-calendar {
    /* CSS Variables */
    --tg-primary-color: #3b82f6;
    --tg-primary-rgb: 59, 130, 246;
    --tg-cell-height: 60px;
    --tg-font-header: 14px;
    --tg-font-event: 12px;

    /* Base styles */
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    user-select: none;
    overflow-x: hidden;

    /* Main container layout */
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e7eb;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Disable text selection during range selection */
.tg-calendar.tg-selecting {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* View container */
.tg-view-container {
    min-height: 0;
    background: white;
    flex: 1;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* Header styles */
.tg-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid #e5e7eb;
    background: white;
}

.tg-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: #1f2937;
}

/* View switch buttons */
.tg-view-switch {
    display: flex;
    background: #f3f4f6;
    padding: 4px;
    border-radius: 8px;
}

.tg-view-btn {
    padding: 4px 12px;
    font-size: 14px;
    border-radius: 6px;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s;
    color: #6b7280;
}

.tg-view-btn:hover {
    color: #374151;
}

.tg-view-btn.tg-active {
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    color: var(--tg-primary-color);
    font-weight: 500;
}

/* Navigation buttons */
.tg-nav {
    display: flex;
    gap: 8px;
}

.tg-nav-btn {
    padding: 4px 12px;
    font-size: 14px;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
    background: #f9fafb;
    cursor: pointer;
    transition: all 0.2s;
}

.tg-nav-btn:hover {
    background: #f3f4f6;
}

.tg-nav-btn.tg-today {
    background: rgba(var(--tg-primary-rgb), 0.1);
    color: var(--tg-primary-color);
    border-color: rgba(var(--tg-primary-rgb), 0.2);
}

.tg-nav-btn.tg-today:hover {
    background: rgba(var(--tg-primary-rgb), 0.2);
}

/* Grid layout helpers */
.tg-grid-7 {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

/* Disabled state */
.tg-disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
}


/* === month.css === */
/**
 * Month view styles
 */

/* Month body container - grid layout to distribute row heights evenly */
.tg-month-body {
    overflow-y: auto;
    flex: 1;
    min-height: 0; /* Required for flex child to respect overflow */
    display: grid;
    grid-auto-rows: 1fr; /* All rows get equal height */
}

/* Month header */
.tg-month-header {
    display: grid;
    border-bottom: 1px solid #e5e7eb;
    background: #f9fafb;
}

.tg-month-header-cell {
    padding: 8px;
    text-align: center;
    font-size: 12px;
    font-weight: bold;
    color: #9ca3af;
}

/* Month row - height controlled by parent grid (grid-auto-rows: 1fr) */
.tg-month-row {
    display: grid;
    position: relative;
    min-height: var(--tg-row-min-height, 80px); /* Minimum height per row */
    border-bottom: 1px solid #e5e7eb;
}

/* Month cell */
.tg-month-cell {
    height: 100%;
    padding: 4px;
    border-right: 1px solid #e5e7eb;
    position: relative;
    z-index: 1;
}

.tg-month-cell:last-child {
    border-right: none;
}

/* Date number in month cell */
.tg-date-number {
    text-align: right;
    font-size: 12px;
    padding: 4px;
}

.tg-date-number.tg-current-month {
    color: #374151;
}

.tg-date-number.tg-other-month {
    color: #d1d5db;
}

.tg-date-number.tg-today {
    color: var(--tg-primary-color);
    font-weight: bold;
}

/* Event count badge */
.tg-event-count-badge {
    position: absolute;
    bottom: 2px;
    right: 2px;
    background: var(--tg-primary-color);
    color: white;
    border-radius: 10px;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: bold;
    min-width: 18px;
    text-align: center;
}

/* Disabled month cell */
.tg-month-cell.tg-disabled {
    opacity: 0.5;
    pointer-events: none;
    background-color: #f9fafb;
}

.tg-month-cell.tg-disabled .tg-date-number {
    color: #9ca3af;
    text-decoration: line-through;
}

/* Range preview for month view */
.tg-month-cell.tg-range-preview {
    background-color: rgba(var(--tg-primary-rgb), 0.15);
    position: relative;
}

.tg-month-cell.tg-range-preview::before {
    content: "";
    position: absolute;
    inset: 0;
    border: 2px solid rgba(var(--tg-primary-rgb), 0.4);
    pointer-events: none;
    box-sizing: border-box;
}

/* "+N more" indicator */
.tg-more-indicator {
    position: absolute;
    font-size: 11px;
    color: var(--tg-primary-color, #3b82f6);
    padding: 2px 6px;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    z-index: 5;
}

.tg-more-indicator:hover {
    background-color: rgba(var(--tg-primary-rgb, 59, 130, 246), 0.1);
}

/* More events popover */
.tg-more-popover {
    position: fixed;
    z-index: 1000;
    background: white;
    border-radius: 8px;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.15),
        0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e7eb;
    min-width: 200px;
    max-width: 280px;
    max-height: 300px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tg-more-popover-header {
    padding: 10px 12px;
    font-weight: 600;
    font-size: 13px;
    color: #374151;
    border-bottom: 1px solid #e5e7eb;
    background: #f9fafb;
}

.tg-more-popover-list {
    overflow-y: auto;
    padding: 4px 0;
    flex: 1;
}

.tg-more-popover-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-size: 12px;
    color: #374151;
    transition: background-color 0.15s;
}

.tg-more-popover-item:hover {
    background-color: #f3f4f6;
}

.tg-more-popover-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tg-more-popover-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}


/* === time.css === */
/**
 * Time view (week/day) styles
 */

/* Time grid container - scrollable wrapper */
.tg-time-grid-container {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
}

/* Time header */
.tg-time-header {
    display: flex;
    padding-left: 60px;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    background: white;
    z-index: 30;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.tg-time-header-cell {
    flex: 1;
    text-align: center;
    padding: 8px;
    border-right: 1px solid #f3f4f6;
    font-size: var(--tg-font-header);
}

.tg-time-header-cell .tg-header-date {
    font-weight: bold;
    font-size: 18px;
}

.tg-time-header-cell.tg-today {
    background-color: rgba(var(--tg-primary-rgb), 0.1);
    color: var(--tg-primary-color);
}

.tg-time-header-cell.tg-disabled {
    opacity: 0.5;
    pointer-events: none;
    background-color: #f9fafb;
}

/* Time body */
.tg-time-body {
    display: flex;
    position: relative;
    min-height: calc(var(--tg-cell-height) * 24);
}

/* Time axis */
.tg-time-axis {
    width: 60px;
    flex-shrink: 0;
    background: #fafafa;
    border-right: 1px solid #e5e7eb;
    position: sticky;
    left: 0;
    z-index: 20;
    height: 100%;
}

.tg-time-axis-label {
    position: absolute;
    width: 100%;
    height: var(--tg-cell-height);
    text-align: right;
    padding-right: 8px;
    color: #9ca3af;
    font-size: 11px;
    pointer-events: none;
    /* Use transform for GPU-accelerated positioning */
    will-change: transform;
}

.tg-time-axis-label.custom {
    font-weight: bold;
}

/* Day columns */
.tg-day-column {
    flex: 1;
    position: relative;
    border-right: 1px solid #e5e7eb;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent calc(var(--tg-cell-height) - 1px),
        #f3f4f6 var(--tg-cell-height)
    );
}

/* Range preview for time view */
.tg-time-range-preview {
    position: absolute;
    background-color: rgba(var(--tg-primary-rgb), 0.15);
    border: 2px dashed rgba(var(--tg-primary-rgb), 0.8);
    pointer-events: none;
    z-index: 15;
    border-radius: 4px;
    box-sizing: border-box;
}

/* Column-level range preview for multi-day selection */
.tg-day-column.tg-range-preview {
    background-color: rgba(var(--tg-primary-rgb), 0.08);
    position: relative;
}

.tg-day-column.tg-range-preview::before {
    content: "";
    position: absolute;
    inset: 0;
    border-left: 3px solid rgba(var(--tg-primary-rgb), 0.5);
    border-right: 3px solid rgba(var(--tg-primary-rgb), 0.5);
    pointer-events: none;
    box-sizing: border-box;
}


/* === events.css === */
/**
 * Event styles - event blocks, bars, drag/resize handles
 *
 * Performance note: Events use CSS custom properties with transform
 * for GPU-accelerated positioning instead of top/left properties.
 */

/* Event base styles */
.tg-event-base {
    position: absolute;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: var(--tg-font-event);
    color: white;
    cursor: grab;
    z-index: 10;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    transition:
        opacity 0.2s,
        box-shadow 0.1s,
        filter 0.1s;
    /* GPU acceleration for smooth transforms */
    will-change: transform;
    /* Base position for transform - JS sets translate() */
    top: 0;
    left: 0;
}

.tg-event-base:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    filter: brightness(1.05);
}

.tg-event-base:active {
    cursor: grabbing;
}

.tg-event-base.tg-is-dragging-source {
    opacity: 0.3;
    filter: grayscale(0.3);
}

/* Month view event bar */
.tg-event-bar {
    height: 26px;
    line-height: 26px;
}

/* Time view event block */
.tg-event-block {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    line-height: 1.3;
    padding-top: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    /* Height set via CSS custom property */
    white-space: normal;
}

.tg-event-block .tg-time-text {
    font-size: 10px;
    opacity: 0.9;
    margin-bottom: 0;
}

/* Event title */
.tg-event-title {
    font-weight: bold;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Resize handles */
.tg-resize-handle {
    position: absolute;
    z-index: 20;
    opacity: 0;
    transition: opacity 0.2s;
}

.tg-event-base:hover .tg-resize-handle {
    opacity: 1;
}

.tg-resize-handle:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

/* Horizontal resize handles (month view) */
.tg-resize-h {
    top: 0;
    bottom: 0;
    width: 12px;
    cursor: col-resize;
}

.tg-resize-h.tg-left {
    left: 0;
}

.tg-resize-h.tg-right {
    right: 0;
}

/* Vertical resize handle (time view) */
.tg-resize-v {
    left: 0;
    right: 0;
    height: 8px;
    cursor: row-resize;
}

.tg-resize-v.tg-top {
    top: 0;
    bottom: auto;
}

.tg-resize-v.tg-bottom {
    bottom: 0;
    top: auto;
}

/* Ghost element for drag preview */
.tg-ghost-event {
    position: absolute;
    background-color: rgba(var(--tg-primary-rgb), 0.15);
    border: 2px dashed rgba(var(--tg-primary-rgb), 0.8);
    border-radius: 4px;
    z-index: 5;
    pointer-events: none;
    box-sizing: border-box;
}

/* Drag proxy */
#tg-drag-proxy {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    visibility: hidden;
    opacity: 0.9;
    transform-origin: top left;
}

/* =============================================================================
   All-day Events Section (Week/Day views)
   ============================================================================= */

.tg-allday-section {
    display: flex;
    flex-direction: row;
    border-bottom: 1px solid var(--tg-border-color, #e5e7eb);
    background-color: var(--tg-bg-color, #fff);
    min-height: 28px;
}

.tg-allday-spacer {
    flex-shrink: 0;
    width: 60px; /* Match time axis width */
    border-right: 1px solid var(--tg-border-color, #e5e7eb);
}

.tg-allday-events-container {
    flex: 1;
    position: relative;
    min-height: 28px;
}

/* All-day event bar (spanning style like month view) */
.tg-allday-event {
    position: absolute;
    height: 22px;
    line-height: 22px;
    border-radius: 3px;
    padding: 0 6px;
    font-size: 12px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    cursor: grab;
    box-sizing: border-box;
}

.tg-allday-event:hover {
    filter: brightness(1.05);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.tg-allday-event:active {
    cursor: grabbing;
}

/* =============================================================================
   Cross-Midnight Event Styles (Time view)
   Events that span multiple days show as segmented blocks
   ============================================================================= */

/* Base styling for segmented events */
.tg-event-block.tg-event-segmented {
    /* Visual indicator that this is part of a multi-day event */
}

/* First segment: event start - has rounded top corners */
.tg-event-block.tg-event-segment-first {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom: 2px dashed rgba(255, 255, 255, 0.5);
}

/* Last segment: event end - has rounded bottom corners */
.tg-event-block.tg-event-segment-last {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-top: 2px dashed rgba(255, 255, 255, 0.5);
}

/* Middle segments: no rounded corners */
.tg-event-block.tg-event-segment-middle {
    border-radius: 0;
    border-top: 2px dashed rgba(255, 255, 255, 0.5);
    border-bottom: 2px dashed rgba(255, 255, 255, 0.5);
}

/* Continuation indicator: event continues from previous day */
.tg-event-block.tg-event-continuation {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

/* Continued indicator: event continues to next day */
.tg-event-block.tg-event-continued {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

/* Combined: middle segment (continuation + continued) */
.tg-event-block.tg-event-continuation.tg-event-continued {
    border-radius: 0;
}

/* Visual enhancement: subtle indicator for cross-midnight events */
.tg-event-block.tg-event-continuation::before,
.tg-event-block.tg-event-continued::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    opacity: 0.7;
}

/* Top arrow indicator for continuation from previous day */
.tg-event-block.tg-event-continuation::before {
    top: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid rgba(255, 255, 255, 0.6);
}

/* Bottom arrow indicator for continuation to next day */
.tg-event-block.tg-event-continued::after {
    bottom: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid rgba(255, 255, 255, 0.6);
}