/* ==========================================================================
   DESIGN SYSTEM & CUSTOM VARIABLES (Dark Premium Glassmorphism Theme)
   ========================================================================== */
:root {
    --bg-main: #0a0d16;
    --bg-sidebar: #101524;
    --bg-panel: rgba(22, 28, 45, 0.4);
    --bg-panel-hover: rgba(22, 28, 45, 0.6);
    --bg-card: rgba(30, 41, 59, 0.5);
    --bg-card-hover: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-focus: rgba(139, 92, 246, 0.4);
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Accent Palette */
    --primary: #8b5cf6;
    --primary-glow: rgba(139, 92, 246, 0.15);
    --primary-hover: #7c3aed;
    
    --todo-color: #3b82f6;
    --todo-bg: rgba(59, 130, 246, 0.1);
    
    --inprogress-color: #8b5cf6;
    --inprogress-bg: rgba(139, 92, 246, 0.1);
    
    --review-color: #f59e0b;
    --review-bg: rgba(245, 158, 11, 0.1);
    
    --done-color: #10b981;
    --done-bg: rgba(16, 185, 129, 0.1);
    
    --danger-color: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-hover: #dc2626;

    --low-priority: #10b981;
    --medium-priority: #f59e0b;
    --high-priority: #ef4444;

    /* Shadows & Radius */
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --font-sans: 'Outfit', 'Sarabun', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   APP CONTAINER LAYOUT
   ========================================================================== */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 36px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    border-radius: var(--radius-sm);
    color: white;
    box-shadow: 0 0 16px rgba(139, 92, 246, 0.4);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.menu-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.menu-item.active {
    color: white;
    background: linear-gradient(90deg, var(--primary-glow) 0%, rgba(139, 92, 246, 0) 100%);
    border-left: 3px solid var(--primary);
    padding-left: 13px; /* adjusts for border */
}

/* User Switcher */
.user-switcher-container {
    margin-top: auto;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.switcher-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 8px;
    padding-left: 4px;
}

.custom-select-wrapper select {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 10px;
    font-family: var(--font-sans);
    font-size: 13.5px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.custom-select-wrapper select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

/* Sidebar Footer User Badge */
.sidebar-footer {
    display: flex;
    align-items: center;
}

.current-user-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 8px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.02);
}

.current-user-badge .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.current-user-badge .info .name {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-primary);
}

.current-user-badge .info .role {
    font-size: 11px;
    color: var(--text-muted);
}

/* Main Content Area Styling */
.main-content {
    margin-left: 280px;
    flex-grow: 1;
    padding: 40px;
    max-width: 1600px;
    width: calc(100vw - 280px);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.content-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

.system-status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.15);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 12px;
    color: #34d399;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    display: inline-block;
    position: relative;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 50%;
    background-color: #10b981;
    animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(3); opacity: 0; }
}

/* ==========================================================================
   GLASSMORPHISM PANELS & METRICS
   ========================================================================== */
.panel-glass {
    background-color: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
}

/* Stats Dashboard cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    border-color: rgba(255,255,255,0.12);
}

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

.stat-title {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-icon-bg {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.bg-purple { background-color: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.bg-blue { background-color: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.bg-amber { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.bg-green { background-color: rgba(16, 185, 129, 0.15); color: #34d399; }

.stat-value {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* Dashboard Grid Layout (2 Column) */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    margin-bottom: 32px;
}

.dashboard-panel {
    padding: 28px;
}

.panel-header {
    margin-bottom: 24px;
}

.panel-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.panel-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ==========================================================================
   FORMS & INPUTS
   ========================================================================== */
.task-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

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

label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

input[type="text"],
input[type="date"],
select,
textarea {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 12px 14px;
    font-family: var(--font-sans);
    font-size: 14px;
    transition: all 0.2s ease;
}

select option {
    background-color: #101524;
    color: var(--text-primary);
}

input[type="text"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
    background-color: rgba(255, 255, 255, 0.05);
}

textarea {
    resize: none;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
}

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

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.btn-danger {
    background-color: var(--danger-bg);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

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

/* ==========================================================================
   TEAM PERFORMANCE TRACKER
   ========================================================================== */
.team-progress-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.progress-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13.5px;
}

.progress-user {
    display: flex;
    align-items: center;
    gap: 8px;
}

.progress-user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.06);
    font-size: 13px;
}

.progress-stats-txt {
    color: var(--text-muted);
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 100px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6 0%, var(--primary) 100%);
    border-radius: 100px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Overdue Alerts Section */
.overdue-alerts-section {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 20px;
}

.overdue-alerts-section h3 {
    font-size: 14px;
    color: #f87171;
    margin-bottom: 12px;
}

.overdue-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.overdue-item {
    background-color: rgba(239, 68, 68, 0.04);
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    animation: slideIn 0.3s ease;
}

.overdue-item-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.overdue-task-title {
    font-weight: 600;
}

.overdue-task-meta {
    font-size: 11px;
    color: var(--text-muted);
}

.overdue-days-badge {
    color: #f87171;
    background-color: rgba(239, 68, 68, 0.1);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
}

/* ==========================================================================
   TASKS MANAGEMENT TABLE
   ========================================================================== */
.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filter-bar {
    display: flex;
    gap: 12px;
}

.search-box {
    position: relative;
    width: 220px;
}

.search-box input {
    padding-left: 36px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.filter-bar select {
    width: auto;
    padding: 8px 30px 8px 12px;
    font-size: 13px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Table */
.table-container {
    overflow-x: auto;
    margin-top: 10px;
}

.tasks-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13.5px;
}

.tasks-table th {
    color: var(--text-muted);
    font-weight: 600;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.tasks-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.tasks-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.01);
}

.actions-col {
    width: 80px;
    text-align: center;
}

.btn-icon-only {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11.5px;
    font-weight: 600;
}

.badge-outline {
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background-color: transparent;
}

.badge-outline strong {
    color: var(--text-primary);
    margin-right: 4px;
}

/* Status Badges */
.status-todo { background-color: var(--todo-bg); color: #93c5fd; }
.status-inprogress { background-color: var(--inprogress-bg); color: #c084fc; }
.status-review { background-color: var(--review-bg); color: #fde047; }
.status-done { background-color: var(--done-bg); color: #6ee7b7; }

/* Priority Tags */
.priority-dot-container {
    display: flex;
    align-items: center;
    gap: 6px;
}
.priority-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.prio-high { background-color: var(--high-priority); box-shadow: 0 0 8px var(--high-priority); }
.prio-medium { background-color: var(--medium-priority); box-shadow: 0 0 8px var(--medium-priority); }
.prio-low { background-color: var(--low-priority); box-shadow: 0 0 8px var(--low-priority); }

/* Empty State */
.empty-table-state {
    padding: 48px;
    text-align: center;
}

.empty-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.empty-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.empty-table-state p {
    color: var(--text-muted);
    font-size: 13px;
}

/* ==========================================================================
   KANBAN BOARD VIEW
   ========================================================================== */
.kanban-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
}

.active-member-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.avatar-large {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.active-member-info .title {
    font-size: 18px;
    font-weight: 600;
}

.active-member-info .subtitle {
    font-size: 12.5px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.kanban-stats-badges {
    display: flex;
    gap: 8px;
}

/* Kanban Board Layout Grid */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: start;
}

.kanban-column {
    background-color: rgba(16, 21, 35, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    max-height: 75vh;
}

.column-header {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 14.5px;
}

.column-header .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.bg-todo { background-color: var(--todo-color); }
.bg-inprogress { background-color: var(--inprogress-color); }
.bg-review { background-color: var(--review-color); }
.bg-done { background-color: var(--done-color); }

.column-header .column-title {
    flex-grow: 1;
}

.card-count {
    font-size: 11px;
    background-color: rgba(255,255,255,0.06);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 10px;
}

.kanban-cards-container {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    flex-grow: 1;
    min-height: 150px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.kanban-cards-container.drag-over {
    background-color: rgba(139, 92, 246, 0.05);
    border: 2px dashed rgba(139, 92, 246, 0.3);
}

/* Kanban Cards Styling */
.task-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px;
    cursor: grab;
    user-select: none;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    position: relative;
    animation: scaleUp 0.2s ease-out;
}

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

.task-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    background-color: var(--bg-card-hover);
}

.task-card.dragging {
    opacity: 0.4;
    transform: scale(0.95);
    border-color: var(--primary);
}

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

.card-title {
    font-size: 14.5px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-desc {
    font-size: 12.5px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 12px;
}

.card-deadline {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
}

.card-deadline.near-deadline {
    color: #f87171;
    font-weight: 600;
}

.card-assignee-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    background-color: rgba(255,255,255,0.1);
}

/* ==========================================================================
   NAVIGATION TAB MECHANICS
   ========================================================================== */
.tab-content {
    display: none;
}

.tab-content.active-tab {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleUp {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(10px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   MODAL WINDOW STYLING
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.modal-content {
    width: 100%;
    max-width: 580px;
    padding: 32px;
    position: relative;
    border-radius: var(--radius-lg);
}

.animate-pop {
    animation: popIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

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

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
}

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

.modal-footer .right-buttons {
    display: flex;
    gap: 12px;
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
}

.toast {
    background: rgba(16, 21, 35, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: toastSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-left: 4px solid var(--primary);
}

.toast.toast-success { border-left-color: #10b981; }
.toast.toast-error { border-left-color: #ef4444; }
.toast.toast-warning { border-left-color: #f59e0b; }

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

.toast.fade-out {
    animation: toastFadeOut 0.3s forwards ease-in;
}

@keyframes toastFadeOut {
    to { transform: translateX(100px); opacity: 0; }
}

/* ==========================================================================
   RESPONSIVE DESIGN (Adaptive styling)
   ========================================================================== */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .kanban-column {
        max-height: 60vh;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100vw;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 16px;
    }
    
    .sidebar-header {
        margin-bottom: 16px;
    }
    
    .sidebar-menu {
        flex-direction: row;
        margin-bottom: 16px;
    }
    
    .user-switcher-container {
        margin-top: 0;
        margin-bottom: 12px;
        padding: 8px 0;
    }
    
    .sidebar-footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        width: 100vw;
        padding: 20px;
    }
    
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .kanban-board {
        grid-template-columns: 1fr;
    }
    
    .flex-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .filter-bar {
        width: 100%;
        flex-direction: column;
    }
    
    .search-box {
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}