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

:root {
    --primary-color: #2563eb;
    --danger-color: #dc2626;
    --success-color: #16a34a;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

input {
    font-size: 1rem;
}

textarea {
    font-size: 1rem;
}

/* Шапка */
.app-header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
}

.app-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--text-primary);
    white-space: nowrap;
    flex-shrink: 0;
}

.header-info {
    display: flex;
    align-items: flex-end;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.progress-section {
    flex: 1;
    min-width: 300px;
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    width: 100%;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #16a34a, #22c55e);
    transition: width 0.5s ease;
}

.header-container > .btn {
    align-self: flex-start;
}

/* Кнопки */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #d1d5db;
}

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

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

/* Основной контент */
.app-main {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.week-container {
    display: grid;
    grid-template-columns: repeat(7, minmax(280px, 1fr));
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

@media (max-width: 1280px) {
    .week-container {
        grid-template-columns: repeat(7, 320px);
        justify-content: start;
    }
}

@media (max-width: 1024px) {
    .week-container {
        grid-template-columns: repeat(7, 300px);
    }
}

/* День недели */
.day-column {
    background-color: var(--bg-white);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
}

.day-column:hover {
    box-shadow: var(--shadow-md);
}

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

.day-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.task-count {
    background-color: var(--bg-light);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    min-width: 2.5rem;
    text-align: center;
}

/* Контейнер для задач */
.tasks-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
    min-height: 200px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.5rem;
}

.tasks-container.drag-over {
    background-color: rgba(37, 99, 235, 0.05);
    border-color: var(--primary-color);
    box-shadow: inset 0 0 8px rgba(37, 99, 235, 0.1);
}

.drag-placeholder {
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 1px;
    margin: 0.5rem 0;
}

/* Карточка задачи */
.task-card {
    background-color: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    padding: 0.75rem;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    transition: all 0.2s ease;
    cursor: grab;
}

.task-card:hover {
    background-color: #eff6ff;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

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

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

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

.task-checkbox {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.125rem;
    cursor: pointer;
    flex-shrink: 0;
}

.task-content {
    flex: 1;
}

.task-text {
    font-size: 0.875rem;
    color: var(--text-primary);
    word-break: break-word;
}

.task-priority {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    margin-top: 0.25rem;
}

.priority-high {
    background-color: #fee2e2;
    color: #dc2626;
}

.priority-medium {
    background-color: #fef3c7;
    color: #d97706;
}

.priority-low {
    background-color: #dcfce7;
    color: #16a34a;
}

.task-actions {
    display: flex;
    gap: 0.25rem;
}

.task-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1rem;
    padding: 0.25rem;
    transition: color 0.2s ease;
}

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

.task-btn.delete:hover {
    color: var(--danger-color);
}

/* Форма редактирования задачи */
.task-edit-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.task-edit-input {
    padding: 0.5rem;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: inherit;
}

.task-edit-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.task-edit-actions .btn {
    flex: 1;
}

/* Кнопка добавления задачи */
.add-task-btn {
    width: 100%;
    padding: 0.75rem;
    border: 2px dashed var(--border-color);
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.add-task-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--bg-light);
}

/* Форма добавления задачи */
.add-task-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    background-color: #fef3c7;
    border-radius: 4px;
    border-left: 4px solid #f59e0b;
}

.add-task-input {
    padding: 0.625rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.add-task-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.add-task-actions .btn {
    flex: 1;
}

/* Пустое состояние */
.empty-state {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-style: italic;
    padding: 2rem 1rem;
    background-color: var(--bg-light);
    border-radius: 4px;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-white);
    border-radius: 8px;
    padding: 2rem;
    max-width: 400px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(2rem);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

.modal-actions .btn {
    flex: 1;
}

/* Toast уведомления */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 2000;
    max-width: 400px;
}

.toast {
    background-color: var(--bg-white);
    border-left: 4px solid var(--primary-color);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    animation: slideInRight 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

@keyframes slideInRight {
    from {
        transform: translateX(2rem);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.25rem;
    padding: 0;
    display: flex;
    align-items: center;
}

.toast-close:hover {
    color: var(--text-primary);
}

/* Адаптив для мобильных */
@media (max-width: 768px) {
    .app-title {
        font-size: 1.5rem;
    }

    .header-container {
        padding: 0 1rem;
    }

    .app-main {
        padding: 0 1rem;
    }

    .week-container {
        gap: 1rem;
        grid-template-columns: repeat(7, 260px);
    }

    .day-column {
        padding: 0.75rem;
    }

    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        max-width: none;
    }
}