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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #0f1419;
    min-height: 100vh;
    padding: 20px;
    color: #e4e6eb;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

header {
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.8em;
    color: #e4e6eb;
    font-weight: 600;
}

/* Context Menu */
.context-menu {
    position: fixed;
    background: #1e2936;
    border: 1px solid #2d3748;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    min-width: 150px;
    display: none;
}

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

.context-menu-item {
    padding: 10px 16px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.9em;
    border-bottom: 1px solid #2d3748;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #e4e6eb;
}

.context-menu-item:last-child {
    border-bottom: none;
}

.context-menu-item:hover {
    background: #2d3748;
}

.context-menu-item.danger:hover {
    background: #742a2a;
    color: #feb2b2;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.open {
    display: flex;
}

.modal-content {
    background: #1a2332;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    border: 1px solid #2d3748;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #2d3748;
}

.modal-header h2 {
    font-size: 1.25em;
    font-weight: 600;
    color: #e4e6eb;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.8em;
    color: #8b96a5;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
    line-height: 1;
}

.close-btn:hover {
    background: #2d3748;
    color: #e4e6eb;
}

.modal-content form {
    padding: 20px;
}

/* Form Styles */
.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #a0aec0;
    font-size: 0.875em;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #2d3748;
    border-radius: 6px;
    font-size: 0.95em;
    font-family: inherit;
    transition: all 0.2s;
    background: #0f1419;
    color: #e4e6eb;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

textarea {
    resize: vertical;
}

select option {
    background: #1a2332;
    color: #e4e6eb;
}

/* Button Styles */
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    font-size: 1em;
    background: #4299e1;
    color: white;
}

.btn-primary:hover {
    background: #3182ce;
}

.btn-add {
    padding: 10px 20px;
    font-size: 0.95em;
    background: #4299e1;
    color: white;
}

.btn-add:hover {
    background: #3182ce;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85em;
}

.btn-complete {
    background: #48bb78;
    color: white;
}

.btn-complete:hover {
    background: #38a169;
}

.btn-delete {
    background: #f56565;
    color: white;
}

.btn-delete:hover {
    background: #e53e3e;
}

.btn-edit {
    background: #4299e1;
    color: white;
}

.btn-edit:hover {
    background: #3182ce;
}

/* Overall Progress */
.overall-progress {
    background: #1a2332;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 1px solid #2d3748;
}

.overall-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 600;
    color: #e4e6eb;
}

#overall-percentage {
    color: #4299e1;
}

.task-counter {
    margin-top: 12px;
    text-align: center;
    color: #a0aec0;
    font-size: 0.9em;
}

#completed-count {
    color: #4299e1;
    font-weight: 600;
}

.task-counter {
    margin-top: 12px;
    text-align: center;
    color: #a0aec0;
    font-size: 0.9em;
}

.task-counter span {
    font-weight: 600;
    color: #e4e6eb;
}

/* Tasks Container */
.tasks-container {
    display: grid;
    gap: 16px;
}

.task-card {
    background: #1a2332;
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    cursor: grab;
    transition: all 0.2s;
    border: 2px solid transparent;
    position: relative;
}

.task-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    border-color: #2d3748;
}

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

.task-card.dragging {
    opacity: 0.4;
}

.task-card.drag-over {
    border-color: #4299e1;
    background: #1e3a5f;
}

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

.task-title {
    font-size: 1.1em;
    font-weight: 600;
    color: #e4e6eb;
    flex: 1;
}

.task-size-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 600;
    margin-left: 10px;
    white-space: nowrap;
}

.task-size-badge.small {
    background: #2c5282;
    color: #90cdf4;
}

.task-size-badge.medium {
    background: #7c2d12;
    color: #fed7aa;
}

.task-size-badge.large {
    background: #7c2d12;
    color: #fbb6ce;
}

.task-description {
    color: #a0aec0;
    margin-bottom: 12px;
    font-size: 0.9em;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Progress Bar */
.progress-section {
    margin-bottom: 12px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.85em;
    color: #a0aec0;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: #0f1419;
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #4299e1;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.75em;
}

/* Reward Section */
.reward-section {
    background: #2d3748;
    padding: 12px;
    border-radius: 8px;
    margin-top: 12px;
    font-size: 0.95em;
    border: 1px solid #4a5568;
}

.reward-hidden {
    color: #718096;
    font-style: italic;
}

.reward-revealed {
    color: #68d391;
    font-weight: 600;
    font-size: 1em;
}

/* Task Actions */
.task-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

/* Subtasks */
.subtasks-container {
    margin-top: 12px;
    padding-left: 16px;
    border-left: 2px solid #2d3748;
}

.subtask {
    background: #0f1419;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 8px;
    cursor: grab;
    font-size: 0.9em;
    border: 1px solid #2d3748;
    position: relative;
}

.subtask:hover {
    border-color: #4a5568;
}

.subtask:active {
    cursor: grabbing;
}

.subtask.dragging {
    opacity: 0.4;
}

.subtask-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.subtask-title {
    font-weight: 600;
    color: #e4e6eb;
}

.subtask-progress {
    width: 100%;
    height: 16px;
    background: #1a2332;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 8px;
}

.subtask-progress-fill {
    height: 100%;
    background: #48bb78;
    transition: width 0.3s ease;
}

.subtask-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed #4a5568;
    border-radius: 6px;
    padding: 12px;
    text-align: center;
    color: #718096;
    margin-top: 12px;
    font-size: 0.85em;
    transition: all 0.2s;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    padding: 0;
}

.drop-zone.visible {
    opacity: 1;
    max-height: 100px;
    padding: 12px;
    margin-top: 12px;
}

.drop-zone.drag-over {
    border-color: #4299e1;
    background: #1e3a5f;
    color: #4299e1;
}

/* Completed State */
.completed {
    opacity: 0.85;
}

.completed .task-title {
    text-decoration: line-through;
    color: #a0aec0;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #a0aec0;
}

.empty-state h2 {
    font-size: 1.5em;
    margin-bottom: 8px;
    color: #cbd5e0;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: #a0aec0;
}

.spinner {
    border: 3px solid #2d3748;
    border-top: 3px solid #4299e1;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 1.5em;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

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

    .task-header {
        flex-direction: column;
        gap: 6px;
    }

    .task-size-badge {
        margin-left: 0;
    }

    .task-actions {
        flex-direction: column;
    }

    .task-actions button {
        width: 100%;
    }
}