/* CSS Variables for Premium Styling & Theme Switching */
:root {
    --font-primary: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-secondary: 'Sarabun', sans-serif;
    
    /* Animation Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-round: 9999px;
}

/* Dark Theme Colors (Default) */
body.dark-theme {
    --bg-app: radial-gradient(circle at top right, #1e1b4b 0%, #0f172a 100%);
    --bg-page: #0b0f19;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-hover-bg: rgba(30, 41, 59, 0.95);
    --card-border: rgba(255, 255, 255, 0.06);
    
    --border-color: rgba(255, 255, 255, 0.1);
    --input-bg: rgba(15, 23, 42, 0.8);
    --input-focus-border: #6366f1;
    
    /* Accents & Status Colors */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.15);
    
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.15);
    
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    
    --error: #ef4444;
    --error-light: rgba(239, 68, 68, 0.15);
    
    --info: #06b6d4;
    --info-light: rgba(6, 182, 212, 0.15);
}

/* Light Theme Colors */
body.light-theme {
    --bg-app: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    --bg-page: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-shadow-glow: 0 4px 20px rgba(99, 102, 241, 0.05);
    
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-hover-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.05);
    
    --border-color: rgba(0, 0, 0, 0.08);
    --input-bg: #ffffff;
    --input-focus-border: #4f46e5;
    
    /* Accents & Status Colors */
    --primary: #4f46e5;
    --primary-hover: #3730a3;
    --primary-light: rgba(79, 70, 229, 0.1);
    
    --success: #059669;
    --success-light: rgba(5, 150, 105, 0.1);
    
    --warning: #d97706;
    --warning-light: rgba(217, 119, 6, 0.1);
    
    --error: #dc2626;
    --error-light: rgba(220, 38, 38, 0.1);
    
    --info: #0891b2;
    --info-light: rgba(8, 145, 178, 0.1);
}

/* Global resets & scrollbar customization */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-normal), color var(--transition-normal);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}
::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: var(--radius-round);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Layout Containers */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    gap: 24px;
}

/* Header styling with glassmorphism */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 28px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-normal);
    z-index: 10;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-icon {
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary));
    animation: pulse 3s infinite ease-in-out;
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.logo-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Role Selector Styles */
.role-selector-container {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.15);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.role-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.role-select {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    padding-right: 8px;
}

.role-select optgroup {
    background: var(--bg-page);
    color: var(--text-primary);
}

.role-select option {
    background: var(--bg-page);
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--primary-light);
    color: var(--text-primary);
    border-color: var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(99, 102, 241, 0.25);
    transform: translateY(-2px);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--primary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity var(--transition-fast);
    padding: 6px 12px;
}

.btn-text:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.btn-text.red {
    color: var(--error);
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.theme-toggle {
    padding: 8px;
    width: 38px;
    height: 38px;
}

.theme-icon {
    transition: transform var(--transition-normal);
}

.theme-toggle:hover .theme-icon {
    transform: rotate(30deg);
}

.hidden {
    display: none !important;
}

/* Main Content Area */
.app-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.view-section {
    display: none;
    flex-direction: column;
    gap: 24px;
    animation: fadeIn var(--transition-normal) forwards;
}

.view-section.active {
    display: flex;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.view-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
}

/* Glass Panels */
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 24px;
    transition: all var(--transition-normal);
}

.glass-panel:hover {
    box-shadow: var(--glass-shadow), var(--glass-shadow-glow);
}

/* Stats Dashboard widgets */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--card-accent, var(--primary));
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px 0 rgba(0, 0, 0, 0.15);
}

.stat-card.total { --card-accent: var(--primary); }
.stat-card.todo { --card-accent: var(--info); }
.stat-card.in-progress { --card-accent: var(--warning); }
.stat-card.blocked { --card-accent: var(--error); }
.stat-card.completed { --card-accent: var(--success); }

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: var(--radius-md);
    background: var(--card-accent);
    color: #ffffff;
    opacity: 0.85;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

/* Charts Section Layout */
.charts-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.chart-container h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 18px;
    border-left: 3px solid var(--primary);
    padding-left: 10px;
}

.chart-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 220px;
    margin-bottom: 12px;
}

/* Donut Chart styles */
.donut-center-info {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.donut-center-info .percent {
    font-size: 1.8rem;
    font-weight: 700;
}

.donut-center-info .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
}

.chart-legend {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    font-family: var(--font-secondary);
    font-size: 0.8rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.legend-item:hover {
    opacity: 0.7;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* SVG Chart drawing rules */
.chart-segment {
    transition: stroke-dasharray 1s ease-out, stroke-width 0.2s ease;
    cursor: pointer;
}

.bar-rect {
    transition: height 1s ease-out, y 1s ease-out;
    cursor: pointer;
}

.bar-rect:hover {
    opacity: 0.85;
}

/* Filters Panel */
.filters-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding: 16px 24px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    flex-grow: 1;
    max-width: 400px;
    transition: border-color var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--input-focus-border);
}

.search-icon {
    color: var(--text-muted);
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    width: 100%;
    outline: none;
}

.filter-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-select {
    background: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.filter-select:focus {
    border-color: var(--input-focus-border);
}

/* Tasks Table Styling */
.table-container {
    padding: 0;
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

.count-badge {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-round);
}

.table-scroll-wrapper {
    overflow-x: auto;
}

.tasks-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    text-align: left;
}

.tasks-table th {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.05);
    padding: 14px 24px;
    border-bottom: 2px solid var(--border-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tasks-table td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.tasks-table tr:hover td {
    background: rgba(99, 102, 241, 0.04);
}

.tasks-table tr:last-child td {
    border-bottom: none;
}

.task-title-cell {
    font-weight: 500;
    font-family: var(--font-primary);
    color: var(--text-primary);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.text-center {
    text-align: center !important;
}

/* Priority & Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-round);
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-priority-สูง {
    background: var(--error-light);
    color: var(--error);
}
.badge-priority-กลาง {
    background: var(--warning-light);
    color: var(--warning);
}
.badge-priority-ต่ำ {
    background: var(--success-light);
    color: var(--success);
}

.badge-status-งานใหม่ {
    background: var(--info-light);
    color: var(--info);
}
.badge-status-กำลังดำเนินงาน {
    background: var(--warning-light);
    color: var(--warning);
}
.badge-status-ติดปัญหาอุปสรรค {
    background: var(--error-light);
    color: var(--error);
}
.badge-status-เสร็จสิ้น {
    background: var(--success-light);
    color: var(--success);
}

.table-actions {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.action-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background: var(--border-color);
}

.action-btn.edit:hover {
    color: var(--primary);
}

.action-btn.delete:hover {
    color: var(--error);
}

/* 2. KANBAN BOARD VIEW */
.kanban-header {
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-secondary);
    margin-top: 4px;
}

.member-highlight {
    color: var(--primary);
    font-weight: 700;
    text-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.member-progress-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 250px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 10px 14px;
    border-radius: var(--radius-md);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.progress-bar-bg {
    height: 8px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--radius-round);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--success) 100%);
    transition: width var(--transition-normal) ease;
}

/* Kanban Columns */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: start;
    min-height: calc(100vh - 280px);
}

@media (max-width: 1024px) {
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 640px) {
    .kanban-board {
        grid-template-columns: 1fr;
    }
}

.kanban-column {
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    max-height: calc(100vh - 260px);
    box-shadow: var(--glass-shadow);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 2px solid var(--column-color);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background: rgba(0, 0, 0, 0.1);
}

.column-header.todo { --column-color: var(--info); }
.column-header.in-progress { --column-color: var(--warning); }
.column-header.blocked { --column-color: var(--error); }
.column-header.completed { --column-color: var(--success); }

.column-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.column-count {
    background: var(--column-color);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.kanban-cards-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    overflow-y: auto;
    min-height: 200px;
    transition: background-color var(--transition-fast) ease;
}

.kanban-cards-container.drag-over {
    background-color: rgba(99, 102, 241, 0.08);
    outline: 2px dashed var(--primary);
    outline-offset: -4px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Kanban Cards styling */
.task-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-left: 4px solid var(--priority-color, var(--primary));
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.08);
    cursor: grab;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    user-select: none;
}

.task-card.dragging {
    opacity: 0.4;
    transform: scale(0.95);
    cursor: grabbing;
}

.task-card:hover {
    background: var(--card-hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.task-card.priority-สูง { --priority-color: var(--error); }
.task-card.priority-กลาง { --priority-color: var(--warning); }
.task-card.priority-ต่ำ { --priority-color: var(--success); }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    margin-top: 4px;
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.card-date {
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-date.overdue {
    color: var(--error);
    font-weight: 600;
}

.card-assignee {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-round);
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--text-secondary);
    max-width: 90px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Modals styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 100;
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-box {
    width: 100%;
    max-width: 580px;
    padding: 0;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    animation: slideDown var(--transition-normal) cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.modal-close {
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--error);
}

.modal-form {
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.required {
    color: var(--error);
}

.form-group input[type="text"],
.form-group textarea,
.form-group select,
.form-group input[type="date"] {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-group input[type="text"]:focus,
.form-group textarea:focus,
.form-group select:focus,
.form-group input[type="date"]:focus {
    border-color: var(--input-focus-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 18px;
    margin-top: 6px;
}

/* Backup Modal Specific Styles */
.backup-modal-content {
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.backup-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.backup-section h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.backup-section p.description {
    font-family: var(--font-secondary);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 6px;
}

.w-100 {
    width: 100%;
}

.modal-divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
}

.file-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.08);
    transition: all var(--transition-fast);
}

.file-drop-zone.drag-over {
    border-color: var(--primary);
    background: var(--primary-light);
}

.drop-icon {
    color: var(--text-muted);
}

.file-drop-zone p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.selected-file-info {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-light);
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 6px 12px;
    margin-top: 8px;
    font-size: 0.8rem;
}

.selected-file-info .filename {
    font-weight: 500;
    color: var(--text-primary);
}

.import-options {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-family: var(--font-secondary);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.radio-label input {
    margin-top: 3px;
}

.radio-label strong {
    font-family: var(--font-primary);
    color: var(--text-primary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--toast-color, var(--primary));
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 0.85rem;
    animation: slideIn var(--transition-normal) cubic-bezier(0.16, 1, 0.3, 1) forwards;
    max-width: 350px;
}

.toast.success { --toast-color: var(--success); }
.toast.warning { --toast-color: var(--warning); }
.toast.error { --toast-color: var(--error); }
.toast.info { --toast-color: var(--info); }

.toast-message {
    font-family: var(--font-secondary);
}

/* Footer styling */
.app-footer {
    text-align: center;
    padding: 16px;
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--glass-border);
    margin-top: 12px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px var(--primary)); opacity: 1; }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 14px var(--primary)); opacity: 0.9; }
}

/* Connection Status Badge */
.connection-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.18);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.connection-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all var(--transition-normal);
}

.connection-status.local {
    border-color: rgba(245, 158, 11, 0.2);
    background: rgba(245, 158, 11, 0.05);
}
.connection-status.local .status-dot {
    background: var(--warning);
    box-shadow: 0 0 8px var(--warning);
}
.connection-status.local .status-text {
    color: var(--warning);
}

.connection-status.cloud {
    border-color: rgba(16, 185, 129, 0.2);
    background: rgba(16, 185, 129, 0.08);
}
.connection-status.cloud .status-dot {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: pulse-green 2s infinite ease-in-out;
}
.connection-status.cloud .status-text {
    color: var(--success);
    font-weight: 600;
}

@keyframes pulse-green {
    0% { transform: scale(1); box-shadow: 0 0 6px var(--success); opacity: 1; }
    50% { transform: scale(1.2); box-shadow: 0 0 14px var(--success); opacity: 0.8; }
    100% { transform: scale(1); box-shadow: 0 0 6px var(--success); opacity: 1; }
}

/* Task Due Status Badges */
.badge-due-ยังไม่ถึงกำหนด {
    background: rgba(6, 182, 212, 0.15);
    color: var(--info);
}
.badge-due-ใกล้ถึงกำหนด {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}
.badge-due-เกินกำหนด {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    animation: flash-red 2.5s infinite ease-in-out;
}
.badge-due-เสร็จสิ้นแล้ว {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

@keyframes flash-red {
    0%, 100% { box-shadow: 0 0 0px var(--error); }
    50% { box-shadow: 0 0 8px var(--error); }
}

/* Login Page Overlay */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at top right, #1e1b4b 0%, #090d16 100%);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100000;
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
}

.login-overlay.active {
    display: flex;
    opacity: 1;
}

.login-box {
    width: 100%;
    max-width: 440px;
    padding: 32px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.login-logo-icon {
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary));
    animation: pulse 3s infinite ease-in-out;
}

.login-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #ffffff;
}

.login-header p {
    font-family: var(--font-secondary);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.login-error-msg {
    color: var(--error);
    font-family: var(--font-secondary);
    font-size: 0.8rem;
    background: var(--error-light);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.login-btn {
    padding: 12px;
    font-weight: 600;
}