:root {
    --primary: #5e35b1;
    --primary-light: #7e57c2;
    --primary-dark: #4527a0;
    --secondary: #26a69a;
    --accent: #ff7043;
    --text: #2d3748;
    --text-light: #4a5568;
    --text-lighter: #718096;
    --bg: #f7fafc;
    --bg-panel: #ffffff;
    --border: #e2e8f0;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #f56565;
    --info: #4299e1;
    --low-priority: #a0aec0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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);
}
.my-element {
    transition: all 0.3s;
    -webkit-transition: all 0.3s; /* Safari и Chrome */
    -moz-transition: all 0.3s;    /* Firefox */
    -o-transition: all 0.3s;      /* Opera */
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.5;
}

/* Основная структура */
.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* Сайдбар */
.sidebar {
    border-radius: 0.75rem;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border);
    padding: 1.5rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(94, 53, 177, 0.1);
    color: var(--primary);
}

.nav-item.active {
    font-weight: 500;
}

.nav-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.projects-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1.5rem 0 0.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.add-project {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 1rem;
}

/* Основное содержимое */
.main-content {
    padding: 2rem;
    margin: 0 auto;
    width: 100%;
}

/* Хедер */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 600;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.search-bar {
    position: relative;
    width: 250px;
}

.search-input {
    width: 100%;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background-color: var(--bg-panel);
    font-size: 0.875rem;
}

.search-icon {
    position: absolute;
    left: -2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-lighter);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.notification-badge {
    position: relative;
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--danger);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 600;
}

/* Статистика */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-panel);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

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

.stat-title {
    font-size: 0.875rem;
    color: var(--text-lighter);
    font-weight: 500;
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-change {
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.positive {
    color: rgb(70,40,161);
}

.negative {
    color: var(--danger);
}

/* Основной контент */
.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
}

/* Календарь */
.calendar-card {
    background-color: var(--bg-panel);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

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

.calendar-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calendar-btn {
    background-color: var(--bg);
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

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

.month-year {
    font-weight: 500;
    min-width: 120px;
    text-align: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.day-header {
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-lighter);
    padding: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.calendar-day:hover {
    background-color: var(--bg);
}

.day-number {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.event {
    font-size: 0.7rem;
    padding: 0.15rem 0.25rem;
    border-radius: 0.25rem;
    margin-bottom: 0.15rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.event-primary {
    background-color: rgba(94, 53, 177, 0.1);
    color: var(--primary);
    border-left: 2px solid var(--primary);
}

.event-secondary {
    background-color: rgba(38, 166, 154, 0.1);
    color: var(--secondary);
    border-left: 2px solid var(--secondary);
}

.event-accent {
    background-color: rgba(255, 112, 67, 0.1);
    color: var(--accent);
    border-left: 2px solid var(--accent);
}

.current-day {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
}

.current-day .day-number {
    color: white;
}

/* Список задач */
.tasks-card {
    background-color: var(--bg-panel);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

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

.tasks-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.add-task-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

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

.task-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.filter-btn {
    background-color: var(--bg);
    border: none;
    border-radius: 1rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.task-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    background-color: var(--bg);
    transition: all 0.2s;
}

.task-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.task-checkbox {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 0.25rem;
    cursor: pointer;
    margin-top: 2px;
    transition: all 0.2s;
    position: relative;
}

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

.task-checkbox:checked::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    color: white;
    font-size: 0.7rem;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.task-content {
    flex: 1;
}

.task-title {
    font-weight: 500;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.task-title.completed {
    text-decoration: line-through;
    color: var(--text-lighter);
}

.task-description {
    font-size: 0.8125rem;
    color: var(--text-lighter);
    margin-bottom: 0.25rem;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-lighter);
}

.task-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.task-priority {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.priority-high {
    background-color: var(--danger);
}

.priority-medium {
    background-color: var(--warning);
}

.priority-low {
    background-color: var(--low-priority);
}

.task-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.task-item:hover .task-actions {
    opacity: 1;
}

.task-btn {
    background: none;
    border: none;
    color: var(--text-lighter);
    cursor: pointer;
    font-size: 0.875rem;
    transition: color 0.2s;
}

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

/* Адаптивность */
@media (max-width: 992px) {
    .app-container {
        grid-template-columns: 80px 1fr;
    }

    .sidebar-header span,
    .nav-item span,
    .projects-header span {
        display: none;
    }

    .logo-icon, .nav-icon {
        font-size: 1.25rem;
    }

    .nav-item {
        justify-content: center;
        padding: 0.75rem;
    }

    .add-project {
        margin-left: auto;
        margin-right: auto;
    }
}

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

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

    .search-bar {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: auto;
        top: auto;
        padding: 0.5rem;
        z-index: 100;
        border-right: none;
        border-top: 1px solid var(--border);
    }

    .sidebar-header, .projects-header {
        display: none;
    }

    .nav-menu {
        flex-direction: row;
        justify-content: space-around;
    }

    .nav-item {
        flex-direction: column;
        font-size: 0.75rem;
        gap: 0.25rem;
        padding: 0.5rem;
    }

    .nav-icon {
        font-size: 1.1rem;
    }

    .main-content {
        padding-bottom: 80px;
    }

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

.flash-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--success);
    color: white;
    padding: 12px 24px;
    border-radius: 4px;
    box-shadow: var(--shadow-md);
    z-index: 1000;
    animation: fadeInOut 3s ease-in-out;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateY(-20px); }
    10% { opacity: 1; transform: translateY(0); }
    90% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(-20px); }
}

.all-tasks-btn {
    color: var(--text-light);
    margin-bottom: 10px;
}

.all-tasks-btn:hover,
.all-tasks-btn.active {
    background-color: rgba(94, 53, 177, 0.1);
    color: var(--primary) !important;
    font-weight: 500;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

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

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
}

input[type="text"],
textarea,
select,
input[type="datetime-local"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.875rem;
}

textarea {
    min-height: 80px;
    resize: vertical;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px
}