@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Sarabun:wght@300;400;500;600;700;800&display=swap');

/* --- Reset & Root Variables --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', 'Sarabun', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:root {
    /* Theme Light (Default) */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-sidebar: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active-bg: #1e293b;
    --sidebar-active-text: #ffffff;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    --primary-color: #6366f1; /* Indigo */
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    
    --success-color: #10b981; /* Emerald */
    --success-light: #d1fae5;
    --success-dark: #065f46;
    
    --warning-color: #f59e0b; /* Amber */
    --warning-light: #fef3c7;
    --warning-dark: #92400e;
    
    --danger-color: #ef4444; /* Rose */
    --danger-light: #fee2e2;
    --danger-dark: #991b1b;
    
    --info-color: #0ea5e9; /* Sky */
    --info-light: #e0f2fe;
    --info-dark: #075985;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

[data-theme="dark"] {
    /* Theme Dark */
    --bg-primary: #0b0f19;
    --bg-secondary: #131c2e;
    --bg-sidebar: #090d16;
    --sidebar-text: #64748b;
    --sidebar-active-bg: #1e293b;
    --sidebar-active-text: #38bdf8;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    
    --border-color: #1e293b;
    --border-hover: #334155;
    
    --primary-color: #38bdf8; /* Sky-Blue for high visibility in dark mode */
    --primary-hover: #0ea5e9;
    --primary-light: rgba(56, 189, 248, 0.15);
    
    --success-color: #34d399;
    --success-light: rgba(52, 211, 153, 0.15);
    --success-dark: #065f46;
    
    --warning-color: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --warning-dark: #92400e;
    
    --danger-color: #f87171;
    --danger-light: rgba(248, 113, 113, 0.15);
    --danger-dark: #991b1b;
    
    --info-color: #38bdf8;
    --info-light: rgba(56, 189, 248, 0.15);
    --info-dark: #075985;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    transition: background-color var(--transition-normal);
}

/* --- Utilities --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }
.m-0 { margin: 0; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.pointer { cursor: pointer; }

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- Layout --- */
.sidebar-container {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--sidebar-text);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--sidebar-active-bg);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 18px;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.sidebar-title span {
    font-size: 11px;
    color: var(--primary-color);
    display: block;
    font-weight: 500;
}

.sidebar-menu {
    list-style: none;
    padding: 24px 16px;
    flex-grow: 1;
    overflow-y: auto;
}

.sidebar-item {
    margin-bottom: 6px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.sidebar-link:hover {
    background-color: var(--sidebar-active-bg);
    color: #ffffff;
}

.sidebar-item.active .sidebar-link {
    background-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.main-container {
    margin-left: 260px;
    flex-grow: 1;
    min-width: 0; /* Prevents flex items from breaking container width */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- Topbar & RBAC Switcher --- */
.topbar {
    height: 70px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
    transition: background-color var(--transition-normal);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Role Switcher Styles */
.role-switcher {
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.role-switcher-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0 10px;
}

.role-btn {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.role-btn.active {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    font-weight: 700;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

/* Theme Switcher Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    background-color: var(--bg-primary);
    border-color: var(--border-hover);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 1px solid var(--border-color);
    padding-left: 20px;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.user-info {
    line-height: 1.2;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role-badge {
    font-size: 11px;
    font-weight: 500;
    color: var(--primary-color);
}

/* --- Content Panels --- */
.content-area {
    padding: 32px;
    flex-grow: 1;
}

.panel {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.panel-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.panel-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* --- Filter & Controls Area --- */
.filter-bar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 16px;
    transition: background-color var(--transition-normal);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
    min-width: 150px;
}

.filter-group.search-group {
    flex-grow: 2;
    min-width: 220px;
}

.filter-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.filter-input {
    width: 100%;
    height: 40px;
    padding: 0 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color var(--transition-fast);
}

.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* --- KPI Dashboard --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.kpi-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.kpi-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.kpi-icon-wrapper.primary { background-color: var(--primary-light); color: var(--primary-color); }
.kpi-icon-wrapper.success { background-color: var(--success-light); color: var(--success-color); }
.kpi-icon-wrapper.warning { background-color: var(--warning-light); color: var(--warning-color); }
.kpi-icon-wrapper.danger { background-color: var(--danger-light); color: var(--danger-color); }
.kpi-icon-wrapper.info { background-color: var(--info-light); color: var(--info-color); }

.kpi-content {
    display: flex;
    flex-direction: column;
}

.kpi-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
}

.kpi-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

/* --- Charts Area --- */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

@media (max-width: 992px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    min-height: 320px;
    display: flex;
    flex-direction: column;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.chart-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.chart-type-select {
    height: 34px;
    padding: 0 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.chart-type-select:focus {
    border-color: var(--primary-color);
}

.chart-body {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Custom SVG Chart Styling */
.chart-svg-container {
    width: 100%;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-bar-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chart-bar-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.chart-bar-label {
    width: 140px;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-bar-wrapper {
    flex-grow: 1;
    background-color: var(--bg-primary);
    height: 18px;
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.chart-bar-fill {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: var(--radius-full);
    transition: width 0.8s ease-out;
}

.chart-bar-value {
    width: 35px;
    font-size: 12px;
    font-weight: 600;
    text-align: right;
    color: var(--text-secondary);
}

/* --- Table Styles --- */
.table-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-controls {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.responsive-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.responsive-table th {
    background-color: var(--bg-primary);
    padding: 14px 20px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.responsive-table td {
    padding: 16px 20px;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.responsive-table tbody tr:hover td {
    background-color: var(--bg-primary);
}

/* --- Progress Bar --- */
.progress-container {
    width: 100px;
    background-color: var(--border-color);
    height: 8px;
    border-radius: var(--radius-full);
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}

.progress-bar {
    height: 100%;
    background-color: var(--success-color);
    border-radius: var(--radius-full);
}

.progress-text {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    display: inline-block;
    vertical-align: middle;
    width: 35px;
}

/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
}

/* Priority Badges */
.badge-priority-veryhigh { background-color: var(--danger-light); color: var(--danger-dark); }
.badge-priority-high { background-color: var(--warning-light); color: var(--warning-dark); }
.badge-priority-medium { background-color: var(--primary-light); color: var(--primary-color); }
.badge-priority-low { background-color: var(--bg-primary); color: var(--text-secondary); border: 1px solid var(--border-color); }

/* Status Badges - Projects & Tasks */
.badge-status-notstarted { background-color: var(--border-color); color: var(--text-secondary); }
.badge-status-ongoing { background-color: var(--info-light); color: var(--info-dark); }
.badge-status-completed { background-color: var(--success-light); color: var(--success-dark); }
.badge-status-overdue { background-color: var(--danger-light); color: var(--danger-dark); }
.badge-status-onhold { background-color: var(--warning-light); color: var(--warning-dark); }
.badge-status-cancelled { background-color: #cbd5e1; color: #475569; }

/* Status Badges - Actions & Milestones */
.badge-status-open { background-color: var(--info-light); color: var(--info-dark); }
.badge-status-pending { background-color: var(--warning-light); color: var(--warning-dark); }

/* Overdue Indicator Dot */
.overdue-indicator-dot {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--danger-color);
    font-weight: 700;
    font-size: 12px;
}

.overdue-indicator-dot::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--danger-color);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.5; }
}

/* --- Kanban Board View --- */
.task-view-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.view-tabs {
    display: flex;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 4px;
}

.view-tab {
    padding: 8px 16px;
    border: none;
    background: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-tab.active {
    background-color: var(--bg-primary);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.kanban-board {
    display: grid;
    grid-template-columns: repeat(5, minmax(240px, 1fr));
    gap: 16px;
    align-items: start;
    overflow-x: auto;
    padding-bottom: 12px;
}

.kanban-column {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: calc(100vh - 280px);
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-normal);
}

.kanban-column-header {
    padding: 16px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.column-task-count {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
}

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

.kanban-cards-wrapper.drag-over {
    background-color: var(--primary-light);
}

/* Kanban Cards */
.task-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    cursor: grab;
    position: relative;
    user-select: none;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.task-card:active {
    cursor: grabbing;
}

.task-card.dragging {
    opacity: 0.4;
    border: 2px dashed var(--primary-color);
    background-color: var(--bg-secondary);
}

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

.task-card-project {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary-color);
}

.task-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.task-card-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.task-card-info-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.task-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.task-card-owner {
    font-size: 11px;
    font-weight: 600;
    background-color: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    max-width: 100px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-card-handle {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
    color: var(--text-muted);
}

.task-card-fallback-select {
    width: 100%;
    margin-top: 8px;
    font-size: 11px;
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

/* Mobile Card View List */
.mobile-card-list {
    display: none;
    flex-direction: column;
    gap: 16px;
}

/* Mobile Card styles */
.mobile-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
}

.mobile-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.mobile-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-card-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.mobile-card-row {
    display: flex;
    justify-content: space-between;
}

.mobile-card-label {
    font-weight: 500;
    color: var(--text-muted);
}

.mobile-card-value {
    color: var(--text-primary);
    font-weight: 600;
}

.mobile-card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

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

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

.btn-danger {
    background-color: var(--danger-color);
    color: #ffffff;
}

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

.btn-icon {
    width: 34px;
    height: 34px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-icon.delete-btn:hover {
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-floating {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-lg);
    display: none; /* Shows on mobile */
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border: none;
    cursor: pointer;
    z-index: 80;
}

/* --- Modals & Overlays --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

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

.modal {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp var(--transition-normal);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

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

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

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background-color: var(--bg-primary);
}

/* Forms in Modal */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 576px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group.col-span-2 {
    grid-column: span 2;
}

@media (max-width: 576px) {
    .form-group.col-span-2 {
        grid-column: span 1;
    }
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input {
    height: 42px;
    padding: 0 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    width: 100%;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    min-height: 80px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    resize: vertical;
    width: 100%;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* --- Settings Panel Specific --- */
.settings-grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

.settings-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-right: 1px solid var(--border-color);
    padding-right: 20px;
}

@media (max-width: 768px) {
    .settings-nav {
        border-right: none;
        padding-right: 0;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 16px;
        flex-direction: row;
        overflow-x: auto;
    }
}

.settings-nav-item {
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.settings-nav-item:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.settings-nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.settings-content {
    min-height: 300px;
}

.settings-section {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.settings-section.active {
    display: block;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    width: 100%;
}

.empty-state-icon {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.empty-state-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

/* --- Toasts --- */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 350px;
}

.toast {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: toastSlideIn var(--transition-fast);
}

.toast-success { border-left-color: var(--success-color); }
.toast-danger { border-left-color: var(--danger-color); }
.toast-warning { border-left-color: var(--warning-color); }

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

.toast-message {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

/* Confirmation Dialog Overlay */
.confirm-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 250;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.confirm-dialog-overlay.active {
    display: flex;
}

.confirm-dialog {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp var(--transition-fast);
}

.confirm-dialog-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.confirm-dialog-message {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.confirm-dialog-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.4);
    z-index: 350;
    display: none;
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* --- Mobile Responsive Rules --- */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .sidebar-container {
        transform: translateX(-100%);
    }
    
    .sidebar-container.open {
        transform: translateX(0);
    }
    
    .main-container {
        margin-left: 0;
    }
    
    .topbar {
        padding: 0 16px;
    }
    
    .content-area {
        padding: 16px;
    }
    
    .role-switcher-container {
        display: none; /* Hide default on mobile top panel to avoid clutter, or we can make a mobile-friendly view */
    }
    
    .responsive-table {
        display: none; /* Hide traditional tables on mobile */
    }
    
    .mobile-card-list {
        display: flex; /* Show card lists on mobile */
    }
    
    .btn-floating {
        display: flex; /* Sticky add button on mobile */
    }
    
    .kanban-board {
        grid-template-columns: repeat(5, minmax(280px, 1fr)); /* Force columns on mobile with horizontal scroll */
        padding-bottom: 24px;
    }
}

/* Print CSS Stylesheet */
@media print {
    body {
        background: white !important;
        color: black !important;
    }
    
    .sidebar-container,
    .topbar,
    .filter-bar,
    .btn,
    .btn-floating,
    .view-tabs,
    .table-controls,
    .modal-overlay,
    .toast-container,
    .role-switcher {
        display: none !important;
    }
    
    .main-container {
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .content-area {
        padding: 0 !important;
    }
    
    .panel {
        display: none !important;
    }
    
    .panel#reports-panel {
        display: block !important;
    }
    
    .responsive-table {
        display: table !important;
        width: 100% !important;
    }
    
    .responsive-table th, 
    .responsive-table td {
        border: 1px solid #ccc !important;
        padding: 8px !important;
        font-size: 11px !important;
    }
    
    .responsive-table th {
        background-color: #f1f1f1 !important;
        color: #000 !important;
    }
    
    .report-print-header {
        display: block !important;
        margin-bottom: 20px;
        border-bottom: 2px solid #333;
        padding-bottom: 10px;
    }
    
    .report-print-title {
        font-size: 20px;
        font-weight: bold;
    }
    
    .report-print-meta {
        font-size: 12px;
        color: #666;
        margin-top: 5px;
    }
}

.report-print-header {
    display: none;
}

/* ============================================================
   AVATAR GROUP — stacked circular avatars for project members
   ============================================================ */
.avatar-group {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 0;
}

.avatar-chip {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    border: 2px solid var(--bg-secondary);
    margin-left: -6px;
    cursor: default;
    transition: transform var(--transition-fast), z-index 0s;
    z-index: 1;
    flex-shrink: 0;
    letter-spacing: 0;
    text-transform: uppercase;
    box-shadow: 0 1px 4px rgba(0,0,0,0.18);
}

.avatar-chip:first-child {
    margin-left: 0;
}

.avatar-chip:hover {
    transform: scale(1.18) translateY(-2px);
    z-index: 10;
}

/* Gold star dot for PM/Project Lead */
.avatar-pm-dot {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background: #f59e0b;
    border-radius: 50%;
    border: 1.5px solid var(--bg-secondary);
    display: block;
}

/* Overflow chip (+N more) */
.avatar-chip-more {
    background: var(--text-muted) !important;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* ============================================================
   MEMBER CHECKBOX PANEL — multi-select in project form
   ============================================================ */
.member-checkbox-panel {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 200px;
    overflow-y: auto;
}

.member-checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: 1px solid transparent;
    user-select: none;
}

.member-checkbox-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

.member-checkbox-item input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--primary-color);
    flex-shrink: 0;
    cursor: pointer;
}

.member-checkbox-item:has(input:checked) {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

.member-checkbox-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.member-checkbox-role {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}