/* Task Manager - Main Stylesheet */

/* CSS Variables for theming */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --archive-color: #64748b;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --transition: all 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.75rem;
}

/* Navigation */
.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 0.875rem;
}

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

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

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

.btn-secondary:hover {
    background-color: #475569;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-description {
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Filters */
.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Form Elements */
.form-select,
.form-input,
.form-textarea {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition);
    background-color: var(--surface-color);
    color: var(--text-primary);
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* Flash Messages */
.flash-messages {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.flash {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

.flash-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.flash-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* Task Board - Kanban Layout */
.task-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    height: calc(100vh - 250px);
    overflow-x: auto;
}

.column {
    background-color: var(--background-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-width: 280px;
    max-width: 280px;
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.column-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.column-count {
    background-color: var(--surface-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.column-content {
    flex: 1;
    overflow-y: auto;
    padding-right: 0.25rem;
}

/* Task Card */
.task-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 0.75rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

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

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.task-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin: 0;
}

.task-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.75rem;
}

.task-assignee,
.task-deadline,
.task-created-by,
.task-owner {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
}

.task-created-by {
    color: var(--info-color);
}

.task-owner {
    color: var(--warning-color);
}

.task-deadline.overdue {
    color: var(--danger-color);
    font-weight: 600;
}

.task-status {
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.status-todo {
    background-color: #e0e7ff;
    color: #3730a3;
}

.status-in_progress {
    background-color: #dbeafe;
    color: #1e40af;
}

.status-delayed {
    background-color: #fef3c7;
    color: #92400e;
}

.status-resolved {
    background-color: #d1fae5;
    color: #065f46;
}

.task-delay-info {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
}

.delay-reason,
.delay-comment {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.delay-comment {
    font-style: italic;
}

/* Task Menu */
.task-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-top: 0.25rem;
    z-index: 10;
    overflow: hidden;
}

.task-menu.show {
    display: block;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.8125rem;
    transition: var(--transition);
}

.menu-item:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.menu-item.text-danger:hover {
    background-color: #fef2f2;
    color: var(--danger-color);
}

/* Task Detail Page */
.task-detail-container {
    max-width: 900px;
    margin: 0 auto;
}

.task-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.task-detail-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.task-detail-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
    background-color: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

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

/* Info Grid */
.task-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.info-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-card p {
    font-size: 1rem;
    color: var(--text-primary);
}

/* Status Card */
.status-card {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.status-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.current-status {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* Form Container */
.form-container {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.form-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.task-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

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

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background-color: var(--background-color);
    border-radius: var(--radius-md);
}

.checkbox-group label {
    margin: 0;
    font-weight: 400;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--border-color);
}

.empty-state i {
    font-size: 4rem;
    color: var(--border-color);
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .task-board {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        width: 100%;
        justify-content: space-between;
    }

    .nav-link {
        flex: 1;
        justify-content: center;
    }

    .filters {
        flex-direction: column;
        width: 100%;
    }

    .filter-group {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .task-detail-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .task-detail-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .task-board {
        grid-template-columns: 1fr;
        height: auto;
    }

    .column {
        max-width: 100%;
    }
}

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

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.show .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-md);
}

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

/* Drag and Drop Styles */
.task-card {
    cursor: grab;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.task-card.dragging {
    opacity: 0.5;
    transform: rotate(3deg);
    box-shadow: var(--shadow-lg);
}

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

.column-content {
    min-height: 100px;
    transition: background-color 0.2s ease;
}

.column-content.drag-over {
    background-color: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    border: 2px dashed var(--primary-color);
}

/* Task Actions - Direct Buttons */
.task-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.btn-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: var(--radius-sm);
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.8125rem;
    font-weight: 400;
    transition: var(--transition);
    text-decoration: none;
    gap: 0.375rem;
}

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

.btn-action.btn-view {
    background-color: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

.btn-action.btn-view:hover {
    background-color: var(--info-color);
    color: white;
}

.btn-action.btn-edit {
    background-color: rgba(99, 102, 241, 0.1);
    color: #4f46e5;
}

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

.btn-action.btn-status {
    background-color: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.btn-action.btn-status:hover {
    background-color: #7c3aed;
    color: white;
}

.btn-action.btn-backlog {
    background-color: rgba(16, 185, 129, 0.1);
    color: #15803d;
}

.btn-action.btn-backlog:hover {
    background-color: var(--success-color);
    color: white;
}

.btn-action.btn-archive {
    background-color: rgba(100, 116, 139, 0.1);
    color: #475569;
}

.btn-action.btn-archive:hover {
    background-color: var(--secondary-color);
    color: white;
}

.btn-action.btn-delete {
    background-color: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

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

/* Task Actions Archive - Buttons for archived tasks */
.task-actions-archive {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.btn-action.btn-todo {
    background-color: rgba(16, 185, 129, 0.1);
    color: #15803d;
    font-weight: 400;
}

.btn-action.btn-todo:hover {
    background-color: var(--success-color);
    color: white;
}

.btn-action.btn-backlog {
    background-color: rgba(245, 158, 11, 0.1);
    color: #d97706;
    font-weight: 400;
}

.btn-action.btn-backlog:hover {
    background-color: var(--warning-color);
    color: white;
}

/* Task Actions Backlog - Buttons for backlog tasks */
.task-actions-backlog {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.btn-action.btn-main-pool {
    background-color: rgba(16, 185, 129, 0.1);
    color: #15803d;
    font-weight: 400;
}

.btn-action.btn-main-pool:hover {
    background-color: var(--success-color);
    color: white;
}

.btn-action.btn-archive {
    background-color: rgba(100, 116, 139, 0.1);
    color: #475569;
    font-weight: 400;
}

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

/* Task Menu Dropdown */
.btn-group {
    position: relative;
}

.task-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 150px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    margin-top: 0.25rem;
    z-index: 10;
    overflow: hidden;
    display: none;
}

.task-menu.show {
    display: block;
}

.task-menu .menu-item {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    text-align: left;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--transition);
}

.task-menu .menu-item:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}