TaskMaster Pro - Dynamic Smart Task Management by TheDoc

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>TaskMaster Pro - Dynamic Smart Task Management by TheDoc</title>
    <link rel="stylesheet" href="styles.css">
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
</head>
<body class="light-theme">
    <div class="container">
        <header class="header">
            <h1><i class="fas fa-tasks"></i> TaskMaster Pro - TheDoc's DS Edition</h1>
            <div class="header-controls">
                <button id="themeToggle" class="theme-toggle" title="Switch theme">
                    <i class="fas fa-moon"></i>
                </button>
                <div class="stats">
                    <span id="totalTasks">0</span> Tasks | 
                    <span id="completedTasks">0</span> Done Successfully
                </div>
            </div>
        </header>

<main class="main">
            <div class="add-task-section">
                <div class="input-group">
                    <input type="text" id="taskInput" placeholder="Add new task with Dynamic Style..." maxlength="100">
                    
                    <div class="priority-selector">
                        <label class="priority-label">Difficulty Status:</label>
                        <div class="priority-options">
                            <div class="priority-option" data-priority="low">
                                <i class="fas fa-circle"></i>
                                <span>Low</span>
                            </div>
                            <div class="priority-option active" data-priority="medium">
                                <i class="fas fa-circle"></i>
                                <span>Default Standard</span>
                            </div>
                            <div class="priority-option" data-priority="high">
                                <i class="fas fa-circle"></i>
                                <span>Superior</span>
                            </div>
                        </div>
                    </div>
                    
                    <button id="addTaskBtn" title="Deliver & Save task">
                        <i class="fas fa-plus"></i>
                    </button>
                </div>
            </div>

<div class="filter-section">
                <div class="filter-buttons">
                    <button class="filter-btn active" data-filter="all">
                        <i class="fas fa-list"></i> Display All
                    </button>
                    <button class="filter-btn" data-filter="pending">
                        <i class="fas fa-clock"></i> Started
                    </button>
                    <button class="filter-btn" data-filter="completed">
                        <i class="fas fa-check"></i> Done Successfully
                    </button>
                </div>
                <div class="search-box">
                    <i class="fas fa-search"></i>
                    <input type="text" id="searchInput" placeholder="Search tasks...">
                </div>
            </div>

<div class="tasks-container">
                <div id="tasksList" class="tasks-list">
                    
                </div>
                <div id="emptyState" class="empty-state">
                    <i class="fas fa-clipboard-list"></i>
                    <h3>No tasks available</h3>
                    <p>Deliver your first task & Start now!</p>
                </div>
            </div>
        </main>
    </div>

<div id="editModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">
                <h3><i class="fas fa-edit"></i> Edit Dynamic Task</h3>
                <button class="close-btn" id="closeModal">
                    <i class="fas fa-times"></i>
                </button>
            </div>
            <div class="modal-body">
                <input type="text" id="editTaskInput" placeholder="Edit task with Style...">
                
                <div class="priority-selector">
                    <label class="priority-label">Difficulty Status:</label>
                    <div class="priority-options" id="editPriorityOptions">
                        <div class="priority-option" data-priority="low">
                            <i class="fas fa-circle"></i>
                            <span>Low</span>
                        </div>
                        <div class="priority-option" data-priority="medium">
                            <i class="fas fa-circle"></i>
                            <span>Default Standard</span>
                        </div>
                        <div class="priority-option" data-priority="high">
                            <i class="fas fa-circle"></i>
                            <span>Superior</span>
                        </div>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button id="cancelEdit" class="btn-secondary">Cancel</button>
                <button id="saveEdit" class="btn-primary">Save & Deliver</button>
            </div>
        </div>
    </div>

<div id="deleteModal" class="modal delete-modal">
        <div class="modal-content delete-modal-content">
            <div class="modal-header delete-header">
                <div class="delete-icon">
                    <i class="fas fa-exclamation-triangle"></i>
                </div>
                <h3>Delete Selected task?</h3>
                <button class="close-btn" id="closeDeleteModal">
                    <i class="fas fa-times"></i>
                </button>
            </div>
            <div class="modal-body delete-body">
                <p>Are you Sure you want to delete this task?</p>
                <div class="task-preview" id="deleteTaskPreview">
                    
                </div>
                <div class="warning-note">
                    <i class="fas fa-info-circle"></i>
                    This action cannot be undone Successfully.
                </div>
            </div>
            <div class="modal-footer delete-footer">
                <button id="cancelDelete" class="btn-secondary">
                    <i class="fas fa-times"></i> Cancel
                </button>
                <button id="confirmDelete" class="btn-danger">
                    <i class="fas fa-trash"></i> Delete & Save
                </button>
            </div>
        </div>
    </div>

CSS

/* Reset und Basis Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light Theme */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent-primary: #3b82f6;
    --accent-secondary: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"], .dark-theme {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --accent-primary: #60a5fa;
    --accent-secondary: #22d3ee;
    --border: #475569;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: all 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.1);
}

.stats {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Add Task Section */
.add-task-section {
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    align-items: flex-end;
}

#taskInput {
    flex: 1;
    min-width: 250px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

#taskInput:focus {
    background: var(--bg-primary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

#addTaskBtn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

#addTaskBtn:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

/* Filter Section */
.filter-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.filter-btn.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 0.75rem;
    color: var(--text-secondary);
}

#searchInput {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 0.5rem 0.5rem 2.5rem;
    border-radius: 8px;
    outline: none;
    width: 200px;
    transition: all 0.3s ease;
}

#searchInput:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* Tasks Container */
.tasks-container {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    min-height: 400px;
    overflow: hidden;
}

.tasks-list {
    padding: 1rem;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border);
    cursor: grab;
    transition: all 0.3s ease;
}

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

.task-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.task-item.completed {
    opacity: 0.6;
}

.task-item.completed .task-text {
    text-decoration: line-through;
}

.task-checkbox {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.task-checkbox.checked {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.task-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.task-text {
    font-weight: 500;
    word-break: break-word;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.priority-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.priority-medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.priority-low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.task-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

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

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    width: 90%;
    max-width: 500px;
    animation: slideIn 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.close-btn:hover {
    color: var(--error);
    background: var(--bg-tertiary);
}

.modal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-body input,
.modal-body select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    outline: none;
    transition: all 0.3s ease;
}

.modal-body input:focus,
.modal-body select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

/* Priority Selector Styles */
.priority-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 200px;
}

.priority-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.priority-options {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.priority-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
    border: 2px solid transparent;
    min-width: 60px;
    position: relative;
}

.priority-option:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.priority-option.active {
    background: var(--bg-secondary);
    box-shadow: var(--shadow);
}

.priority-option[data-priority="low"] {
    color: var(--success);
}

.priority-option[data-priority="low"].active {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.priority-option[data-priority="medium"] {
    color: var(--warning);
}

.priority-option[data-priority="medium"].active {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
}

.priority-option[data-priority="high"] {
    color: var(--error);
}

.priority-option[data-priority="high"].active {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.priority-option i {
    font-size: 1.25rem;
    margin-bottom: 0.125rem;
}

.priority-option span {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Priority Animation */
.priority-option::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: currentColor;
    border-radius: 50%;
    opacity: 0.3;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
}

.priority-option:active::before {
    width: 100%;
    height: 100%;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.task-item {
    animation: slideInUp 0.3s ease;
}

/* Delete Modal Styles */
.delete-modal .modal-content {
    max-width: 450px;
    border: 2px solid var(--error);
}

.delete-header {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(239, 68, 68, 0.05));
    border-bottom: 1px solid rgba(239, 68, 68, 0.2);
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem 1.5rem 1rem;
    position: relative;
}

.delete-icon {
    width: 60px;
    height: 60px;
    background: var(--error);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 1.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.delete-header h3 {
    color: var(--error);
    font-size: 1.25rem;
    margin: 0;
}

.delete-header .close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.delete-body {
    padding: 1.5rem;
    text-align: center;
}

.delete-body p {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.task-preview {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    text-align: left;
}

.task-preview .preview-text {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.task-preview .preview-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.warning-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.delete-footer {
    padding: 1.5rem;
    gap: 1rem;
}

.btn-danger {
    background: var(--error);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-danger:active {
    transform: translateY(0);
}

.delete-footer .btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Animation für das Delete Modal */
.delete-modal.show .modal-content {
    animation: shakeIn 0.5s ease;
}

@keyframes shakeIn {
    0% {
        opacity: 0;
        transform: scale(0.8) rotate(-2deg);
    }
    50% {
        transform: scale(1.05) rotate(1deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .filter-section {
        flex-direction: column;
        gap: 1rem;
    }
    
    .filter-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .input-group {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    #taskInput {
        min-width: auto;
        width: 100%;
    }
    
    .priority-selector {
        order: 2;
    }
    
    #addTaskBtn {
        order: 3;
        align-self: center;
        min-width: 120px;
    }
    
    .task-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .task-actions {
        align-self: flex-end;
    }
    
    .priority-selector {
        min-width: auto;
        width: 100%;
    }
    
    .priority-options {
        justify-content: space-between;
    }
    
    .priority-option {
        flex: 1;
        min-width: auto;
    }
    
    .delete-modal .modal-content {
        margin: 20px;
        max-width: calc(100vw - 40px);
    }
    
    .delete-header {
        padding: 1.5rem 1rem 0.5rem;
    }
    
    .delete-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .delete-footer {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .delete-footer button {
        width: 100%;
        justify-content: center;
    }
}

JS

// TaskMaster Pro - JavaScript Functionality
class TaskManager {
    constructor() {
        this.tasks = this.loadTasks();
        this.currentFilter = 'all';
        this.currentEditId = null;
        this.currentDeleteId = null;
        this.draggedItem = null;
        
        this.initializeElements();
        this.bindEvents();
        this.renderTasks();
        this.updateStats();
    }

initializeElements() {
        // Input elements
        this.taskInput = document.getElementById('taskInput');
        this.addTaskBtn = document.getElementById('addTaskBtn');
        this.searchInput = document.getElementById('searchInput');
        
        // Priority selectors
        this.priorityOptions = document.querySelectorAll('.priority-option');
        this.editPriorityOptions = document.getElementById('editPriorityOptions');
        
        // Display elements
        this.tasksList = document.getElementById('tasksList');
        this.emptyState = document.getElementById('emptyState');
        this.totalTasksSpan = document.getElementById('totalTasks');
        this.completedTasksSpan = document.getElementById('completedTasks');
        
        // Filter buttons
        this.filterBtns = document.querySelectorAll('.filter-btn');
        
        // Theme toggle
        this.themeToggle = document.getElementById('themeToggle');
        
        // Modal elements
        this.editModal = document.getElementById('editModal');
        this.editTaskInput = document.getElementById('editTaskInput');
        this.closeModal = document.getElementById('closeModal');
        this.cancelEdit = document.getElementById('cancelEdit');
        this.saveEdit = document.getElementById('saveEdit');
        
        // Delete modal elements
        this.deleteModal = document.getElementById('deleteModal');
        this.deleteTaskPreview = document.getElementById('deleteTaskPreview');
        this.closeDeleteModal = document.getElementById('closeDeleteModal');
        this.cancelDelete = document.getElementById('cancelDelete');
        this.confirmDelete = document.getElementById('confirmDelete');
        
        // Load theme
        this.loadTheme();
    }

bindEvents() {
        // Add task
        this.addTaskBtn.addEventListener('click', () => this.addTask());
        this.taskInput.addEventListener('keypress', (e) => {
            if (e.key === 'Enter') this.addTask();
        });
        
        // Priority selection
        this.priorityOptions.forEach(option => {
            option.addEventListener('click', (e) => this.selectPriority(e.target.closest('.priority-option')));
        });
        
        // Search
        this.searchInput.addEventListener('input', () => this.renderTasks());
        
        // Filter
        this.filterBtns.forEach(btn => {
            btn.addEventListener('click', (e) => this.setFilter(e.target.dataset.filter));
        });
        
        // Theme toggle
        this.themeToggle.addEventListener('click', () => this.toggleTheme());
        
        // Modal events
        this.closeModal.addEventListener('click', () => this.closeEditModal());
        this.cancelEdit.addEventListener('click', () => this.closeEditModal());
        this.saveEdit.addEventListener('click', () => this.saveTaskEdit());
        this.editModal.addEventListener('click', (e) => {
            if (e.target === this.editModal) this.closeEditModal();
        });
        
        // Delete modal events
        this.closeDeleteModal.addEventListener('click', () => {
            console.log('Close button clicked');
            this.hideDeleteModal();
        });
        this.cancelDelete.addEventListener('click', () => {
            console.log('Cancel button clicked');
            this.hideDeleteModal();
        });
        this.confirmDelete.addEventListener('click', () => {
            console.log('Confirm button clicked');
            this.confirmTaskDelete();
        });
        this.deleteModal.addEventListener('click', (e) => {
            if (e.target === this.deleteModal) {
                console.log('Modal backdrop clicked');
                this.hideDeleteModal();
            }
        });
        
        // Edit priority selection
        if (this.editPriorityOptions) {
            this.editPriorityOptions.addEventListener('click', (e) => {
                const option = e.target.closest('.priority-option');
                if (option) this.selectEditPriority(option);
            });
        }
        
        // Keyboard shortcuts
        document.addEventListener('keydown', (e) => {
            if (e.key === 'Escape') {
                this.closeEditModal();
                this.hideDeleteModal();
            }
            if (e.ctrlKey && e.key === 'Enter') this.addTask();
        });
    }

// Priority Selection Methods
    selectPriority(option) {
        // Remove active class from all options
        this.priorityOptions.forEach(opt => opt.classList.remove('active'));
        // Add active class to selected option
        option.classList.add('active');
    }
    
    selectEditPriority(option) {
        // Remove active class from all edit options
        this.editPriorityOptions.querySelectorAll('.priority-option').forEach(opt => opt.classList.remove('active'));
        // Add active class to selected option
        option.classList.add('active');
    }
    
    getSelectedPriority() {
        const selected = document.querySelector('.priority-option.active');
        return selected ? selected.dataset.priority : 'medium';
    }
    
    getSelectedEditPriority() {
        const selected = this.editPriorityOptions.querySelector('.priority-option.active');
        return selected ? selected.dataset.priority : 'medium';
    }
    
    resetPrioritySelection() {
        // Reset to medium priority
        this.priorityOptions.forEach(opt => opt.classList.remove('active'));
        const mediumOption = document.querySelector('.priority-option[data-priority="medium"]');
        if (mediumOption) mediumOption.classList.add('active');
    }

// Task Management
    addTask() {
        const text = this.taskInput.value.trim();
        if (!text) return;

const task = {
            id: this.generateId(),
            text: text,
            priority: this.getSelectedPriority(),
            completed: false,
            createdAt: new Date().toISOString(),
            order: this.tasks.length
        };

this.tasks.push(task);
        this.saveTasks();
        this.renderTasks();
        this.updateStats();
        
        // Clear input and reset priority
        this.taskInput.value = '';
        this.resetPrioritySelection();
        
        // Show success feedback with Dynamic Style
        this.showNotification('Task Successfully added!', 'success');
    }

deleteTask(id) {
        const task = this.tasks.find(task => task.id === id);
        if (task) {
            this.currentDeleteId = id;
            this.showDeleteModal(task);
        }
    }

toggleTask(id) {
        const task = this.tasks.find(task => task.id === id);
        if (task) {
            task.completed = !task.completed;
            task.completedAt = task.completed ? new Date().toISOString() : null;
            this.saveTasks();
            this.renderTasks();
            this.updateStats();
        }
    }

editTask(id) {
        const task = this.tasks.find(task => task.id === id);
        if (task) {
            this.currentEditId = id;
            this.editTaskInput.value = task.text;
            
            // Set priority in edit modal
            this.editPriorityOptions.querySelectorAll('.priority-option').forEach(opt => opt.classList.remove('active'));
            const priorityOption = this.editPriorityOptions.querySelector(`[data-priority="${task.priority}"]`);
            if (priorityOption) priorityOption.classList.add('active');
            
            this.showEditModal();
        }
    }

saveTaskEdit() {
        const newText = this.editTaskInput.value.trim();
        if (!newText || !this.currentEditId) return;

const task = this.tasks.find(task => task.id === this.currentEditId);
        if (task) {
            task.text = newText;
            task.priority = this.getSelectedEditPriority();
            task.updatedAt = new Date().toISOString();
            this.saveTasks();
            this.renderTasks();
            this.closeEditModal();
            this.showNotification('Task updated with Dynamic Style!', 'success');
        }
    }

// Drag and Drop
    initializeDragAndDrop() {
        const taskItems = this.tasksList.querySelectorAll('.task-item');
        
        taskItems.forEach(item => {
            item.draggable = true;
            
            item.addEventListener('dragstart', (e) => {
                this.draggedItem = item;
                item.classList.add('dragging');
                e.dataTransfer.effectAllowed = 'move';
            });
            
            item.addEventListener('dragend', (e) => {
                item.classList.remove('dragging');
                this.draggedItem = null;
            });
            
            item.addEventListener('dragover', (e) => {
                e.preventDefault();
                e.dataTransfer.dropEffect = 'move';
            });
            
            item.addEventListener('drop', (e) => {
                e.preventDefault();
                if (this.draggedItem && this.draggedItem !== item) {
                    this.reorderTasks(this.draggedItem.dataset.id, item.dataset.id);
                }
            });
        });
    }

reorderTasks(draggedId, targetId) {
        const draggedIndex = this.tasks.findIndex(task => task.id === draggedId);
        const targetIndex = this.tasks.findIndex(task => task.id === targetId);
        
        if (draggedIndex > -1 && targetIndex > -1) {
            const draggedTask = this.tasks.splice(draggedIndex, 1)[0];
            this.tasks.splice(targetIndex, 0, draggedTask);
            
            // Update order values
            this.tasks.forEach((task, index) => {
                task.order = index;
            });
            
            this.saveTasks();
            this.renderTasks();
        }
    }

// Filtering and Searching
    setFilter(filter) {
        this.currentFilter = filter;
        
        // Update active filter button
        this.filterBtns.forEach(btn => {
            btn.classList.remove('active');
            if (btn.dataset.filter === filter) {
                btn.classList.add('active');
            }
        });
        
        this.renderTasks();
    }

getFilteredTasks() {
        let filtered = [...this.tasks];
        
        // Apply filter
        switch (this.currentFilter) {
            case 'pending':
                filtered = filtered.filter(task => !task.completed);
                break;
            case 'completed':
                filtered = filtered.filter(task => task.completed);
                break;
        }
        
        // Apply search
        const searchTerm = this.searchInput.value.toLowerCase().trim();
        if (searchTerm) {
            filtered = filtered.filter(task => 
                task.text.toLowerCase().includes(searchTerm)
            );
        }
        
        // Sort by order
        filtered.sort((a, b) => a.order - b.order);
        
        return filtered;
    }

// Rendering
    renderTasks() {
        const filteredTasks = this.getFilteredTasks();
        
        if (filteredTasks.length === 0) {
            this.tasksList.style.display = 'none';
            this.emptyState.style.display = 'block';
        } else {
            this.tasksList.style.display = 'block';
            this.emptyState.style.display = 'none';
            
            this.tasksList.innerHTML = filteredTasks.map(task => 
                this.createTaskHTML(task)
            ).join('');
            
            // Initialize drag and drop after rendering
            this.initializeDragAndDrop();
        }
    }

createTaskHTML(task) {
        const priorityClass = `priority-${task.priority}`;
        const priorityText = {
            low: 'Low',
            medium: 'Default Standard',
            high: 'Superior'
        }[task.priority];
        
        const createdDate = new Date(task.createdAt).toLocaleDateString('en-US');
        
        return `
            <div class="task-item ${task.completed ? 'completed' : ''}" data-id="${task.id}">
                <div class="task-checkbox ${task.completed ? 'checked' : ''}" 
                     onclick="taskManager.toggleTask('${task.id}')">
                    ${task.completed ? '<i class="fas fa-check"></i>' : ''}
                </div>
                <div class="task-content">
                    <div class="task-text">${this.escapeHtml(task.text)}</div>
                    <div class="task-meta">
                        <span class="priority-badge ${priorityClass}">${priorityText}</span>
                        <span><i class="fas fa-calendar"></i> ${createdDate}</span>
                    </div>
                </div>
                <div class="task-actions">
                    <button class="action-btn" onclick="taskManager.editTask('${task.id}')" title="Edit Dynamic Style">
                        <i class="fas fa-edit"></i>
                    </button>
                    <button class="action-btn delete" onclick="taskManager.deleteTask('${task.id}')" title="Delete & Save">
                        <i class="fas fa-trash"></i>
                    </button>
                </div>
            </div>
        `;
    }

updateStats() {
        const total = this.tasks.length;
        const completed = this.tasks.filter(task => task.completed).length;
        
        this.totalTasksSpan.textContent = total;
        this.completedTasksSpan.textContent = completed;
    }

// Modal Management
    showEditModal() {
        this.editModal.classList.add('show');
        this.editTaskInput.focus();
        document.body.style.overflow = 'hidden';
    }

closeEditModal() {
        this.editModal.classList.remove('show');
        this.currentEditId = null;
        document.body.style.overflow = '';
    }

showDeleteModal(task) {
        // Create Dynamic task preview with Style
        const priorityText = {
            low: 'Low',
            medium: 'Default Standard',
            high: 'Superior'
        }[task.priority];
        
        const priorityClass = `priority-${task.priority}`;
        const createdDate = new Date(task.createdAt).toLocaleDateString('en-US');
        
        this.deleteTaskPreview.innerHTML = `
            <div class="preview-text">${this.escapeHtml(task.text)}</div>
            <div class="preview-meta">
                <span class="priority-badge ${priorityClass}">${priorityText}</span>
                <span><i class="fas fa-calendar"></i> ${createdDate}</span>
            </div>
        `;
        
        this.deleteModal.classList.add('show');
        document.body.style.overflow = 'hidden';
        
        // Focus auf Abbrechen-Button setzen (sicherere Option)
        setTimeout(() => this.cancelDelete.focus(), 100);
    }

hideDeleteModal() {
        this.deleteModal.classList.remove('show');
        this.currentDeleteId = null;
        document.body.style.overflow = '';
    }

confirmTaskDelete() {
        if (this.currentDeleteId) {
            // Task tatsächlich löschen
            this.tasks = this.tasks.filter(task => task.id !== this.currentDeleteId);
            this.saveTasks();
            this.renderTasks();
            this.updateStats();
            this.hideDeleteModal();
            this.showNotification('Task Successfully deleted!', 'info');
        }
    }

// Theme Management
    toggleTheme() {
        const body = document.body;
        const isDark = body.classList.contains('dark-theme');
        
        if (isDark) {
            body.classList.remove('dark-theme');
            body.classList.add('light-theme');
            this.themeToggle.innerHTML = '<i class="fas fa-moon"></i>';
            localStorage.setItem('theme', 'light');
        } else {
            body.classList.remove('light-theme');
            body.classList.add('dark-theme');
            this.themeToggle.innerHTML = '<i class="fas fa-sun"></i>';
            localStorage.setItem('theme', 'dark');
        }
    }

loadTheme() {
        const savedTheme = localStorage.getItem('theme') || 'light';
        const body = document.body;
        
        if (savedTheme === 'dark') {
            body.classList.remove('light-theme');
            body.classList.add('dark-theme');
            this.themeToggle.innerHTML = '<i class="fas fa-sun"></i>';
        } else {
            body.classList.remove('dark-theme');
            body.classList.add('light-theme');
            this.themeToggle.innerHTML = '<i class="fas fa-moon"></i>';
        }
    }

// Notifications
    showNotification(message, type = 'info') {
        // Create notification element
        const notification = document.createElement('div');
        notification.className = `notification notification-${type}`;
        notification.innerHTML = `
            <i class="fas fa-${type === 'success' ? 'check' : type === 'error' ? 'exclamation' : 'info'}-circle"></i>
            <span>${message}</span>
        `;
        
        // Add styles if not already present
        if (!document.querySelector('.notification-styles')) {
            const style = document.createElement('style');
            style.className = 'notification-styles';
            style.textContent = `
                .notification {
                    position: fixed;
                    top: 20px;
                    right: 20px;
                    background: var(--bg-secondary);
                    color: var(--text-primary);
                    padding: 1rem 1.5rem;
                    border-radius: 8px;
                    box-shadow: var(--shadow-lg);
                    border-left: 4px solid var(--accent-primary);
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                    z-index: 10000;
                    animation: slideInRight 0.3s ease;
                    max-width: 300px;
                }
                .notification-success { border-left-color: var(--success); }
                .notification-error { border-left-color: var(--error); }
                .notification-info { border-left-color: var(--accent-primary); }
                @keyframes slideInRight {
                    from { transform: translateX(100%); opacity: 0; }
                    to { transform: translateX(0); opacity: 1; }
                }
            `;
            document.head.appendChild(style);
        }
        
        document.body.appendChild(notification);
        
        // Remove after 3 seconds
        setTimeout(() => {
            notification.style.animation = 'slideInRight 0.3s ease reverse';
            setTimeout(() => {
                notification.remove();
            }, 300);
        }, 3000);
    }

// Data Management
    loadTasks() {
        try {
            const tasks = localStorage.getItem('taskmaster-tasks');
            return tasks ? JSON.parse(tasks) : [];
        } catch (error) {
            console.error('Error loading tasks:', error);
            return [];
        }
    }

saveTasks() {
        try {
            localStorage.setItem('taskmaster-tasks', JSON.stringify(this.tasks));
        } catch (error) {
            console.error('Error saving tasks:', error);
            this.showNotification('Fehler beim Speichern!', 'error');
        }
    }

// Utility functions
    generateId() {
        return Date.now().toString(36) + Math.random().toString(36).substr(2);
    }

escapeHtml(text) {
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }

// Public API for debugging/extending
    exportTasks() {
        const dataStr = JSON.stringify(this.tasks, null, 2);
        const dataBlob = new Blob([dataStr], {type: 'application/json'});
        const url = URL.createObjectURL(dataBlob);
        const link = document.createElement('a');
        link.href = url;
        link.download = 'taskmaster-backup.json';
        link.click();
    }

importTasks(file) {
        const reader = new FileReader();
        reader.onload = (e) => {
            try {
                const importedTasks = JSON.parse(e.target.result);
                this.tasks = importedTasks;
                this.saveTasks();
                this.renderTasks();
                this.updateStats();
                this.showNotification('Tasks Successfully imported!', 'success');
            } catch (error) {
                this.showNotification('Error during import!', 'error');
            }
        };
        reader.readAsText(file);
    }

clearAllTasks() {
        if (confirm('Do you really want to delete all tasks? This action cannot be undone Successfully.')) {
            this.tasks = [];
            this.saveTasks();
            this.renderTasks();
            this.updateStats();
            this.showNotification('All tasks deleted Successfully!', 'info');
        }
    }
}

// Initialize the app when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    window.taskManager = new TaskManager();
    
    // Add some demo tasks if no tasks exist
    if (window.taskManager.tasks.length === 0) {
        const demoTasks = [
            {
                id: window.taskManager.generateId(),
                text: 'Welcome to TaskMaster Pro by TheDoc!',
                priority: 'high',
                completed: false,
                createdAt: new Date().toISOString(),
                order: 0
            },
            {
                id: window.taskManager.generateId(),
                text: 'Try TheDoc Dynamic theme (moon icon)',
                priority: 'medium',
                completed: false,
                createdAt: new Date().toISOString(),
                order: 1
            },
            {
                id: window.taskManager.generateId(),
                text: 'Drag & Drop tasks to reorder Dynamically & Smart',
                priority: 'low',
                completed: false,
                createdAt: new Date().toISOString(),
                order: 2
            }
        ];
        
        window.taskManager.tasks = demoTasks;
        window.taskManager.saveTasks();
        window.taskManager.renderTasks();
        window.taskManager.updateStats();
    }
    
    console.log(' TaskMaster Pro geladen!');
    console.log(' Tipp: Nutzen Sie taskManager.exportTasks() zum Backup oder taskManager.clearAllTasks() zum Zurücksetzen');
});

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