/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Sarabun:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

/* Design System & Custom Properties */
:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
    --bg-glass: rgba(15, 23, 42, 0.45);
    --bg-glass-hover: rgba(30, 41, 59, 0.6);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.15);
    
    --primary: #6366f1; /* Indigo */
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.4);
    
    --success: #10b981; /* Emerald */
    --success-glow: rgba(16, 185, 129, 0.2);
    --warning: #f59e0b; /* Amber */
    --warning-glow: rgba(245, 158, 11, 0.2);
    --danger: #ef4444; /* Rose */
    --danger-glow: rgba(239, 68, 68, 0.2);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dark: #0f172a;
    
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glow-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables Override */
[data-theme="light"] {
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #f1f5f9 100%);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-hover: rgba(255, 255, 255, 0.95);
    --border-glass: rgba(0, 0, 0, 0.06);
    --border-glow: rgba(99, 102, 241, 0.08);
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    --card-shadow: 0 8px 32px 0 rgba(99, 102, 241, 0.05);
    --primary-glow: rgba(99, 102, 241, 0.15);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Sarabun', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-main);
    min-height: 100vh;
    padding-bottom: 50px;
    transition: background var(--transition-smooth), color var(--transition-smooth);
    background-attachment: fixed;
}

/* Main Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* Header & Glassmorphism Navigation */
header {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 20px 32px;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--card-shadow);
    flex-wrap: wrap;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--success));
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.25rem;
    box-shadow: var(--glow-shadow);
}

.brand-title h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, #ffffff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .brand-title h1 {
    background: linear-gradient(90deg, var(--text-main), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-title p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Controls (Role Switch & Theme Mode) */
.controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.role-selector-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.2);
    padding: 6px 12px;
    border-radius: 50px;
    border: 1px solid var(--border-glass);
}

[data-theme="light"] .role-selector-wrapper {
    background: rgba(0, 0, 0, 0.05);
}

.role-selector-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.role-select {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding-right: 24px;
    cursor: pointer;
    outline: none;
    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 center;
    background-size: 14px;
}

/* Theme Toggle Switch */
.theme-btn {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition-fast);
}

.theme-btn:hover {
    background: var(--primary);
    color: white;
    transform: rotate(15deg);
}

/* Glassmorphism General Cards */
.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.card-glass:hover {
    border-color: var(--border-glow);
}

/* Notifications Bar */
.notification-banner {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideDown 0.4s ease-out;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fca5a5;
    font-size: 0.9rem;
}

.notification-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
}

/* Supervisor View Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 350px 1fr;
    }
}

/* Statistics Widgets */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-widget {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-data h3 {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.1;
}

.stat-data p {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.bg-indigo { background: var(--primary); box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4); }
.bg-emerald { background: var(--success); box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4); }
.bg-amber { background: var(--warning); box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4); }
.bg-rose { background: var(--danger); box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4); }

/* Left Sidebar Panel (Forms & Team list) */
.sidebar-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.panel-section {
    padding: 24px;
}

.panel-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Custom Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

[data-theme="light"] .form-control {
    background: rgba(255, 255, 255, 0.8);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border: none;
    color: white;
    padding: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--glow-shadow);
    transition: var(--transition-fast);
}

.btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    background: var(--bg-glass-hover);
}

/* Quick Add Team Input */
.flex-input-group {
    display: flex;
    gap: 8px;
}

.flex-input-group .form-control {
    flex: 1;
}

.btn-icon-add {
    background: var(--primary);
    border: none;
    color: white;
    width: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
}

/* Team Workload List */
.team-member-item {
    margin-bottom: 16px;
}

.member-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.9rem;
    font-weight: 600;
}

.member-name {
    display: flex;
    align-items: center;
    gap: 8px;
}

.member-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #475569;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: white;
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

[data-theme="light"] .progress-bar-bg {
    background: rgba(0, 0, 0, 0.05);
}

.progress-bar-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--success) 100%);
    width: 0%;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.member-delete-btn {
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition-fast);
}

.member-delete-btn:hover {
    opacity: 1;
}

/* Global Task View Directory */
.directory-panel {
    padding: 24px;
}

.directory-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-select {
    min-width: 150px;
}

/* Task Directory Table */
.table-responsive {
    overflow-x: auto;
}

.task-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.task-table th,
.task-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-glass);
}

.task-table th {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.task-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .task-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.01);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-todo { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-in_progress { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-review { background: rgba(139, 92, 246, 0.15); color: #a78bfa; border: 1px solid rgba(139, 92, 246, 0.3); }
.badge-done { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }

.badge-low { background: rgba(71, 85, 105, 0.15); color: #cbd5e1; border: 1px solid rgba(71, 85, 105, 0.3); }
.badge-medium { background: rgba(99, 102, 241, 0.15); color: #818cf8; border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-high { background: rgba(239, 68, 68, 0.15); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }

.overdue-warning {
    color: var(--danger);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.overdue-warning::before {
    content: '⚠️';
}

/* Kanban Board Styling */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    align-items: start;
}

.kanban-column {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    min-height: 500px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .column-header {
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
}

.column-title {
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.column-count {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
}

[data-theme="light"] .column-count {
    background: rgba(0, 0, 0, 0.05);
}

/* Column Specific Header Borders */
.todo-col .column-header { border-bottom-color: var(--primary); }
.in_progress-col .column-header { border-bottom-color: var(--warning); }
.review-col .column-header { border-bottom-color: #8b5cf6; }
.done-col .column-header { border-bottom-color: var(--success); }

.kanban-cards-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 100px;
}

.kanban-cards-area.drag-over {
    background: rgba(99, 102, 241, 0.05);
    border: 2px dashed var(--primary);
    border-radius: var(--radius-sm);
}

/* Kanban Cards */
.kanban-card {
    background: var(--bg-glass-hover);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 16px;
    cursor: grab;
    user-select: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.kanban-card.overdue-card {
    background: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.2);
}

.kanban-card.overdue-card:hover {
    border-color: var(--danger);
    box-shadow: 0 10px 15px rgba(239, 68, 68, 0.1);
}

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

.kanban-card.dragging {
    opacity: 0.4;
    transform: scale(0.95);
}

.kanban-card:hover {
    border-color: var(--border-glow);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.card-title {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 8px;
    line-height: 1.3;
}

.card-details {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.75rem;
}

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

.card-actions-wrapper {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px solid var(--border-glass);
}

.card-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.card-btn:hover {
    color: var(--text-main);
}

.card-btn.edit:hover { color: var(--primary); }
.card-btn.delete:hover { color: var(--danger); }

/* Quick Status Move buttons for Mobile */
.mobile-move-buttons {
    display: flex;
    gap: 4px;
}

.btn-move {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.7rem;
}

/* Modal Styling */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
    padding: 16px;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--bg-gradient);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 500px;
    padding: 24px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 12px;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* Add Task Board Buttons */
.btn-add-column {
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed var(--border-glass);
    color: var(--text-muted);
    width: 100%;
    padding: 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 12px;
    transition: var(--transition-fast);
}

.btn-add-column:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-color: var(--primary);
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive adjustments */
@media (max-width: 640px) {
    header {
        padding: 16px;
        flex-direction: column;
        align-items: stretch;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .role-selector-wrapper {
        justify-content: space-between;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
    }
    
    .kanban-board {
        grid-template-columns: 1fr;
    }
}