@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Orbitron', sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
    transition: 0.3s;
}

.container {
    padding: 20px;
    border-radius: 15px;
    width: 400px;
    text-align: center;
    transition: 0.3s;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.settings {
    display: flex;
    gap: 10px;
}

.settings button {
    font-size: 16px;
    padding: 8px 12px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: 0.3s;
}

.task-input {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

input {
    flex: 1;
    min-width: 200px;
    padding: 10px;
    border-radius: 5px;
    border: none;
    font-size: 16px;
}

button {
    padding: 10px;
    border-radius: 5px;
    border: none;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

ul {
    list-style: none;
    margin-top: 15px;
    padding: 0;
}

li {
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
    border-radius: 8px;
    user-select: none;
}

.completed {
    text-decoration: line-through;
    opacity: 0.6;
}

/* Temas */
body.neon {
    background: black;
    color: white;
}

.neon .container {
    background: rgba(20, 20, 20, 0.9);
    box-shadow: 0px 0px 15px cyan;
}

.neon button {
    background: cyan;
    color: black;
}

.neon h1 {
    font-size: 24px;
    color: cyan;
    text-shadow: 0px 0px 10px cyan;
}

body.dark {
    background: #222;
    color: white;
}

.dark .container {
    background: #333;
    box-shadow: 0px 0px 15px gray;
}

.dark button {
    background: gray;
    color: black;
}

.dark h1 {
    font-size: 24px;
    color: white;
    text-shadow: 0px 0px 10px white;
}

body.light {
    background: white;
    color: black;
}

.light .container {
    background: #f5f5f5;
    box-shadow: 0px 0px 15px rgb(119, 118, 118);
}

.light button {
    background: black;
    color: white;
}

.light h1 {
    font-size: 24px;
    color: black;
    text-shadow: 0px 0px 10px black;
}

/* Notificaciones */
.notification {
    position: fixed;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    background: limegreen;
    color: white;
    padding: 10px;
    border-radius: 5px;
    display: none;
    text-align: center;
}