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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    background: white;
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

header h1 {
    color: #333;
    font-size: 28px;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-danger:hover {
    background: #c82333;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
    min-height: 200px;
}

.project-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.project-card h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 22px;
}

.project-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.project-actions {
    display: flex;
    gap: 8px;
}

.btn-edit {
    background: #28a745;
    color: white;
    padding: 8px 16px;
    font-size: 14px;
}

.btn-edit:hover {
    background: #218838;
}

.task-count {
    color: #666;
    font-size: 14px;
}

/* Kanban Board */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.kanban-column {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-height: 500px;
}

.column-header {
    color: #333;
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #667eea;
}

.tasks-container {
    min-height: 400px;
}

.task-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    cursor: move;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Green background for completed tasks */
.task-card.task-done {
    background: #d4edda;
    border-color: #a8d5ba;
}

.task-card:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

.task-card.dragging {
    opacity: 0.5;
    transform: rotate(2deg);
}

.task-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 10px;
}

.task-title {
    color: #333;
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

.task-buttons {
    display: flex;
    gap: 5px;
}

.task-edit {
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
}

.task-edit:hover {
    background: #218838;
}

.task-delete {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 12px;
}

.task-delete:hover {
    background: #c82333;
}

.task-info {
    margin-bottom: 8px;
}

.task-label {
    color: #666;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 3px;
}

.task-value {
    color: #333;
    font-size: 14px;
}

.task-requirements {
    color: #555;
    font-size: 13px;
    line-height: 1.5;
    white-space: pre-wrap;
}

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

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

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    animation: slideDown 0.3s ease;
}

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

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 20px;
}

.close:hover {
    color: #000;
}

.modal-content h2 {
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

/* Drag and Drop States */
.tasks-container.drag-over {
    background: #f0f0f0;
    border: 2px dashed #667eea;
    border-radius: 8px;
}

/* Notes Section */
.notes-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    padding: 25px;
    margin-top: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid #667eea;
}

.notes-header h2 {
    color: #333;
    font-size: 24px;
    margin: 0;
}

.notes-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.note-card {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.note-card:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    border-color: #667eea;
}

.note-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.note-from {
    color: #333;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 3px;
}

.note-date {
    color: #666;
    font-size: 13px;
    font-weight: 600;
}

.note-buttons {
    display: flex;
    gap: 8px;
}

.note-edit {
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.3s ease;
}

.note-edit:hover {
    background: #218838;
}

.note-delete {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.3s ease;
}

.note-delete:hover {
    background: #c82333;
}

.note-content {
    color: #333;
    font-size: 15px;
    line-height: 1.6;
    white-space: pre-wrap;
}

.notes-empty {
    text-align: center;
    color: #999;
    padding: 40px;
    font-size: 16px;
}

/* Responsive Design */
@media (max-width: 968px) {
    .kanban-board {
        grid-template-columns: 1fr;
    }

    header {
        flex-direction: column;
        gap: 15px;
    }

    header h1 {
        font-size: 24px;
    }
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        margin: 20% auto;
        padding: 20px;
    }
}

/* Empty State */
.empty-state {
    background: white;
    border-radius: 10px;
    text-align: center;
    color: #666;
    padding: 60px 40px;
    font-size: 18px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    grid-column: 1 / -1;
}