:root {
    --oxford-blue: #0b132bff;
    --space-cadet: #1c2541ff;
    --yinmn-blue: #3a506bff;
    --verdigris: #5bc0beff;
    --white: #ffffff;
    --light-gray: #f7f7f7;
    --dark-gray: #333333;
}

body {
    margin: 0;
    padding: 0;
    background: linear-gradient(175deg, var(--oxford-blue), var(--space-cadet), var(--yinmn-blue), var(--verdigris));
    font-family: "Arial", sans-serif;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    color: var(--dark-gray);
}

header {
    background-color: var(--oxford-blue);
    color: var(--white);
    padding: 10px;
    text-align: center;
}

header h1 {
    font-size: 50px;
    font-weight: bold;
    color: var(--verdigris);
    margin: 0;
    padding: 20px 0;
    display: inline-block;
}

header h1:hover {
    color: var(--white);
    border-radius: 5px;
    transition: all 0.5s ease-in-out;
}
h1, h2, h3 {
    margin: 10px 0;
}

.container-body {
    width: 60%;
    margin: 15px auto;
    padding: 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    text-align: left;
}

.container-tittle, .container-form, .container-answer {
    margin-bottom: 20px;
}

.container-form {
    margin-top: 20px;
}

.container-answer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.container-answer input[type="text"] {
    width: 80%;
    text-align: center;
}

.container-categorias {
    width: 100px;
    padding: 5px;
    border-radius: 5px;
}

input[type="number"], input[type="text"] {
    padding: 10px;
    border: 1px solid var(--space-cadet);
    border-radius: 5px;
    font-size: 1rem;
}

input[type="text"] {
    width: 90%;
    max-width: 1123px;
    margin-bottom: 15px;
}

input[type="text"]::placeholder {
    color: var(--dark-gray);
    font-style: italic;
    opacity: 0.8;
}

fieldset {
    border: 1px solid var(--space-cadet);
    border-radius: 8px;
    padding: 15px;
    background-color: var(--light-gray);
}

legend {
    color: var(--space-cadet);
    font-weight: bold;
    padding: 0 10px;
}

label {
    display: inline-block;
    margin: 10px 0;
    font-size: 1rem;
}

h3 {
    margin: 0 0 10px 0;
}

.checkboxs {
    display: grid;
}

#sumar, #restar{
    display: inline-block;
}

.buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

button {
    padding: 10px 15px;
    background-color: var(--space-cadet);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

button:hover {
    background-color: var(--yinmn-blue);
    transform: scale(1.05);
}

/*Strongs password*/
.password-strength {
    width: 50%;
    height: 10px;
    background-color: #e0e0e0;
    border-radius: 5px;
    position: relative;
    overflow: hidden;
}
  
.strength-bar {
    height: 100%;
    width: 0;
    background-color: #f00; /* Rojo por defecto */
    transition: width 0.5s, background-color 0.5s;
}
  
.strength-bar.good {
    background-color: #ffa500; /* Naranja */
}
  
.strength-bar.strong {
    background-color: #0f0; /* Verde */
}

#strength-label {
    margin: 5px;
}

/* CopyBoard Message */
.hidden {
    display: none;
    opacity: 0;
    transition: opacity 0.8s ease;
}

#notification {
    position: fixed;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #5bc0be; /* Color de fondo */
    color: white; /* Color del texto */
    padding: 10px 20px;
    border-radius: 5px;
    font-size: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: opacity 0.8s ease, visibility 0.3s ease;
    z-index: 1000;
    opacity: 0;
}

footer {
    background-color: var(--oxford-blue);
    color: var(--white);
    padding: 15px 0;
    font-size: 0.9rem;
    margin-top: auto;
}

footer p {
    margin: 0;
}

footer a {
    color: var(--verdigris);
    text-decoration: none;
    font-weight: bold;
}

footer a:hover {
    text-decoration: underline;
}