body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 100vh;
    margin: 0;
    background: linear-gradient(to right, white, #0055a4, #d52b1e);
    overflow-y: auto;
}

.container {
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    width: 450px;
    text-align: center;
    margin: 20px 0;
}

h1 {
    font-size: 2rem;
    color: #d32f2f;
    cursor: pointer;
    transition: color 0.3s ease;
}

h1:hover {
    color: #b71c1c;
}

.input-container {
    display: flex;
    margin-bottom: 20px;
}

#taskInput {
    flex: 1;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-right: 10px;
    font-size: 16px;
}

#addTaskBtn {
    padding: 12px 20px;
    background-color: #d32f2f;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#addTaskBtn:hover {
    background-color: #b71c1c;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 10px;
    transition: background-color 0.3s ease;
    word-break: break-word;
}

li.completed {
    background-color: #f0f0f0;
    color: #888;
}

li .buttons {
    display: flex;
    gap: 5px;
    flex-shrink: 0;
}

li button {
    background-color: #d32f2f;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 14px;
    flex-shrink: 0;
}

li button.complete-btn {
    background-color: #4caf50;
}

li button.complete-btn:hover {
    background-color: #45a049;
}

li button.edit-btn {
    background-color: #ffc107;
}

li button.edit-btn:hover {
    background-color: #e0a800;
}

li button:hover {
    background-color: #b71c1c;
}

.completed-tasks {
    margin-top: 20px;
}

#completedHeader {
    cursor: pointer;
    color: #d32f2f;
    font-size: 1.2rem;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

#completedHeader:hover {
    color: #b71c1c;
}

#completedHeader .arrow {
    transition: transform 0.3s ease;
}

#completedHeader .arrow.rotated {
    transform: rotate(180deg);
}

#completedList {
    display: none;
    margin-top: 10px;
}

#completedList.visible {
    display: block;
}

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

.popup.visible {
    display: flex;
}

.popup-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    width: 350px;
    text-align: center;
}

.popup-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.popup-buttons button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#saveEditBtn {
    background-color: #4caf50;
    color: white;
}

#saveEditBtn:hover {
    background-color: #45a049;
}

#cancelEditBtn {
    background-color: #d32f2f;
    color: white;
}

#cancelEditBtn:hover {
    background-color: #b71c1c;
}