/* ==========================================================================
   Leavewise - Annual Leave Planner
   Dark glassmorphic theme inspired by Apple, Linear, Arc
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0d0d12;
    --bg-secondary: #15151c;
    --bg-tertiary: #1c1c26;

    --glass-bg: rgba(25, 25, 35, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.05);

    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #22d3ee;
    --accent-success: #34d399;
    --accent-warning: #fbbf24;
    --accent-danger: #f87171;

    --selection-bg: rgba(99, 102, 241, 0.25);
    --selection-border: rgba(99, 102, 241, 0.5);

    --leave-bg: rgba(34, 211, 238, 0.15);
    --leave-border: rgba(34, 211, 238, 0.4);

    --bank-holiday-bg: rgba(251, 191, 36, 0.1);
    --bank-holiday-border: rgba(251, 191, 36, 0.3);
    --bank-holiday-selection-bg: rgba(251, 191, 36, 0.35);

    --today-ring: rgba(99, 102, 241, 0.6);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Layout */
    --sidebar-width: 280px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Glass Panel Base */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Overlays & Modals
   ========================================================================== */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-lg);
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    padding: var(--space-lg);
    max-width: 440px;
    width: 100%;
    animation: slideUp var(--transition-normal);
}

.modal-small {
    max-width: 360px;
}

.modal-large {
    max-width: 640px;
    max-height: 80vh;
    overflow-y: auto;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.modal h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.modal h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
}

.selection-summary {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    padding: var(--space-sm) var(--space-md);
    background: var(--glass-highlight);
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-group input[type="number"],
.form-group input[type="text"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group textarea {
    min-height: 200px;
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
}

.form-group .hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-left: var(--space-sm);
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: flex-start;
}

.checkbox-label {
    width: 44px;
    height: 34px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.checkbox-label input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.checkbox-label span {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.checkbox-label:hover {
    border-color: var(--accent-primary);
}

.checkbox-label:has(input:checked) {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-label:has(input:checked) span {
    color: white;
}

/* Year Selector Group */
.year-selector-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: flex-start;
}

.year-option-label {
    width: 52px;
    height: 34px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.year-option-label input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.year-option-label span {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.year-option-label:hover {
    border-color: var(--accent-primary);
}

.year-option-label:has(input:checked) {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.year-option-label:has(input:checked) span {
    color: white;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary:hover {
    background: var(--accent-primary-hover);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--text-muted);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-danger:hover {
    background: var(--accent-danger);
    color: white;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
    background: var(--bg-tertiary);
}

.btn-link {
    background: none;
    border: none;
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.btn-link:hover {
    color: var(--accent-primary-hover);
}

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    margin-top: var(--space-lg);
}

.form-actions {
    margin-top: var(--space-md);
}

.form-actions-secondary {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.btn-danger-text {
    background: none;
    border: none;
    color: var(--accent-danger);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    padding: var(--space-sm);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.btn-danger-text:hover {
    opacity: 1;
    text-decoration: underline;
}

.copy-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

/* ==========================================================================
   Header
   ========================================================================== */

#header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: rgba(13, 13, 18, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.year-badge {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.year-badge.clickable {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.year-badge.clickable:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.year-badge.clickable::after {
    content: ' ▼';
    font-size: 0.625rem;
    opacity: 0.6;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Year Dropdown */
#year-dropdown {
    position: fixed;
    top: 56px;
    left: 140px;
    z-index: 200;
    padding: var(--space-xs);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.year-option {
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

.year-option:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.year-option.active {
    background: var(--accent-primary);
    color: white;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */

#main-content {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    padding-bottom: 120px;
}

/* ==========================================================================
   Mini Year Sidebar (Compact + Expanded Views)
   ========================================================================== */

/* Compact view - positioned above summary panel in bottom right */
#mini-year-compact {
    position: fixed;
    bottom: 250px;
    right: var(--space-xl);
    z-index: 100;
    padding: var(--space-sm) var(--space-md);
    width: 200px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#mini-year-compact:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.compact-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.compact-title {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.expand-icon {
    width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-right: 5px solid var(--text-secondary);
    transition: all var(--transition-fast);
}

#mini-year-compact:hover .expand-icon {
    border-right-color: var(--accent-primary);
}

/* Compact mini year grid - super compressed 4x3 */
#mini-year-compact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}

.compact-month {
    text-align: center;
}

.compact-month-label {
    font-size: 0.5rem;
    color: var(--text-muted);
    margin-bottom: 1px;
    display: block;
}

.compact-month-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0;
}

.compact-day {
    width: 4px;
    height: 4px;
    border-radius: 1px;
    background: var(--bg-tertiary);
}

.compact-day.has-leave {
    background: var(--accent-primary);
}

.compact-day.is-bank-holiday {
    background: var(--holiday-color);
}

.compact-day.is-weekend {
    background: var(--bg-secondary);
}

/* Expanded sidebar - floating overlay from right */
#mini-year-sidebar {
    position: fixed;
    top: 80px;
    right: var(--space-xl);
    z-index: 200;
    width: 520px;
    padding: var(--space-lg);
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    overflow-x: hidden;
    animation: slideInRight var(--transition-normal);
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

#mini-year-sidebar::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

#mini-year-sidebar.hidden {
    display: none;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.sidebar-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

.btn-collapse {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1rem;
    color: var(--text-secondary);
}

.btn-collapse:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.collapse-icon::before {
    content: '×';
}

#sidebar-content {
    display: flex;
    flex-direction: column;
}

#mini-year {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    width: 100%;
}

.mini-month {
    padding: var(--space-xs);
}

.mini-month-name {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 2px;
}

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

.mini-day {
    width: 100%;
    aspect-ratio: 1;
    font-size: 0.5625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border-radius: 2px;
}

.mini-day.empty {
    visibility: hidden;
}

.mini-day.weekend {
    color: var(--text-muted);
    opacity: 0.5;
}

.mini-day.bank-holiday {
    background: var(--accent-warning);
    color: var(--bg-primary);
    font-weight: 600;
}

.mini-day.has-leave {
    background: var(--accent-secondary);
    color: var(--bg-primary);
    font-weight: 600;
}

#bank-holidays-list {
    border-top: 1px solid var(--glass-border);
    padding-top: var(--space-md);
}

#bank-holidays-list h4 {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

#bank-holidays-ul {
    list-style: none;
    font-size: 0.75rem;
    color: var(--text-muted);
}

#bank-holidays-ul li {
    padding: var(--space-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

#bank-holidays-ul li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-warning);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ==========================================================================
   Calendar
   ========================================================================== */

#calendar-container {
    flex: 1;
    min-width: 0;
}

#calendar {
    display: flex;
    flex-direction: column;
    max-width: 900px;
}

/* Weekday Header - Fixed at top of calendar */
.weekday-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: var(--space-sm);
    position: sticky;
    top: 60px;
    background: var(--bg-primary);
    padding: var(--space-sm) 0;
    z-index: 10;
}

.weekday-label {
    text-align: center;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-xs);
}

/* Continuous weeks grid */
.weeks-container {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

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

/* Day Tiles - Compact rectangles */
.day-tile {
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    user-select: none;
}

.day-tile:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--glass-border);
}

.day-tile.empty {
    background: transparent;
    cursor: default;
    pointer-events: none;
}

.day-content {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.day-number {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-primary);
}

.month-indicator {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
}

.day-tile.empty .day-number {
    visibility: hidden;
}

/* Weekend styling */
.day-tile.weekend {
    background: rgba(255, 255, 255, 0.02);
}

.day-tile.weekend .day-number {
    color: var(--text-muted);
}

/* Today */
.day-tile.today {
    box-shadow: inset 0 0 0 2px var(--today-ring);
}

.day-tile.today .day-number {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Bank Holiday */
.day-tile.bank-holiday {
    background: var(--bank-holiday-bg);
    border-color: var(--bank-holiday-border);
}

.day-tile.bank-holiday .day-number {
    color: var(--accent-warning);
}

.bank-holiday-dot {
    width: 4px;
    height: 4px;
    background: var(--accent-warning);
    border-radius: 50%;
}

/* Non-working day */
.day-tile.non-working {
    background: rgba(255, 255, 255, 0.01);
}

.day-tile.non-working .day-number {
    opacity: 0.4;
}

/* Selection States */
.day-tile.selecting {
    background: var(--selection-bg);
    border-color: var(--selection-border);
}

.day-tile.selecting.bank-holiday {
    background: var(--bank-holiday-selection-bg);
    border-color: var(--accent-warning);
}

.day-tile.selection-start,
.day-tile.selection-end {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.day-tile.selection-start .day-number,
.day-tile.selection-end .day-number {
    color: white;
}

.day-tile.selection-start .month-indicator,
.day-tile.selection-end .month-indicator {
    color: rgba(255, 255, 255, 0.8);
}

/* Leave Block */
.day-tile.has-leave {
    background: var(--leave-bg);
    border-color: var(--leave-border);
}

.day-tile.has-leave .day-number {
    color: var(--accent-secondary);
}

.day-tile.leave-start {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.day-tile.leave-end {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.day-tile.leave-middle {
    border-radius: 0;
}

.day-tile.leave-single {
    border-radius: var(--radius-sm);
}

/* Leave Label */
.leave-label {
    position: absolute;
    top: -10px;
    left: 2px;
    font-size: 0.5625rem;
    font-weight: 600;
    color: var(--accent-secondary);
    background: var(--bg-primary);
    padding: 1px 4px;
    border-radius: 2px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    z-index: 5;
}

/* Bank Holiday Label */
.bank-holiday-label {
    position: absolute;
    top: -10px;
    left: 2px;
    font-size: 0.5625rem;
    font-weight: 600;
    color: var(--accent-warning);
    background: var(--bg-primary);
    padding: 1px 4px;
    border-radius: 2px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    z-index: 5;
}

/* Edit controls on hover */
.day-tile.has-leave:hover .leave-edit-btn {
    opacity: 1;
}

.leave-edit-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 10;
}

.leave-edit-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Leave Drag-to-Shift */
body.leave-dragging {
    cursor: ew-resize !important;
    user-select: none;
}

body.leave-dragging * {
    cursor: ew-resize !important;
}

.day-tile.has-leave {
    cursor: ew-resize;
}

.day-tile.dragging {
    opacity: 0.5;
    transform: scale(0.95);
}

.day-tile.drag-preview {
    background: var(--selection-bg) !important;
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   Selection Feedback
   ========================================================================== */

#selection-feedback {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    padding: var(--space-md) var(--space-lg);
    min-width: 200px;
    animation: fadeSlideDown var(--transition-fast);
}

@keyframes fadeSlideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.feedback-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feedback-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
}

.feedback-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.feedback-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feedback-value.highlight {
    color: var(--accent-success);
    font-size: 1.125rem;
}

/* ==========================================================================
   Summary Panel
   ========================================================================== */

#summary-panel {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 100;
    padding: var(--space-lg);
    min-width: 200px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
}

.summary-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.summary-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.summary-value.highlight {
    color: var(--accent-success);
    font-size: 1.5rem;
}

.summary-divider {
    height: 1px;
    background: var(--glass-border);
    margin: var(--space-sm) 0;
}

.summary-row.roi .summary-value {
    color: var(--accent-secondary);
}

/* ==========================================================================
   Undo Toast
   ========================================================================== */

#undo-toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    animation: toastIn var(--transition-normal);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ==========================================================================
   Plan Modal
   ========================================================================== */

#plan-summary-section {
    margin-bottom: var(--space-lg);
}

#plan-days-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-height: 300px;
    overflow-y: auto;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.plan-month-group {
    padding-bottom: var(--space-sm);
}

.plan-month-group:not(:last-child) {
    border-bottom: 1px solid var(--glass-border);
}

.plan-month-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.plan-days {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.plan-day {
    padding: 2px 8px;
    background: var(--leave-bg);
    border: 1px solid var(--leave-border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-secondary);
}

.plan-day .leave-name {
    font-size: 0.625rem;
    color: var(--text-muted);
    margin-left: var(--space-xs);
}

/* Formatted Message */
#plan-message-section {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--glass-border);
}

.formatted-message {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    font-size: 0.875rem;
    line-height: 1.8;
}

.formatted-message .greeting {
    margin-bottom: var(--space-md);
}

.formatted-message .intro {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.formatted-message .leave-list {
    list-style: none;
    margin-bottom: var(--space-md);
}

.formatted-message .leave-list li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.formatted-message .leave-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-secondary);
}

.formatted-message .sign-off {
    color: var(--text-secondary);
}

/* ==========================================================================
   Scrollbar
   ========================================================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 900px) {
    #mini-year-sidebar,
    #mini-year-compact {
        display: none;
    }

    #main-content {
        padding: var(--space-md);
    }
}

@media (max-width: 768px) {
    #header {
        padding: var(--space-sm) var(--space-md);
    }

    .day-tile {
        height: 28px;
    }

    .day-number {
        font-size: 0.75rem;
    }

    #summary-panel {
        bottom: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
        min-width: auto;
    }
}