body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: bisque;
    overflow: hidden;
    position: relative;
}

/* Fondo animado con íconos matemáticos */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.math-icon {
    position: absolute;
    font-size: 24px;
    color: rgba(139, 69, 19, 0.3);
    animation: floatDiagonal 8s linear infinite;
    user-select: none;
    font-weight: bold;
}

@keyframes floatDiagonal {
    0% {
        transform: translate(-50px, 100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translate(100px, -100px) rotate(360deg);
        opacity: 0;
    }
}

.CalculadoraNormal{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: red;
    border-radius: 10px;
    width: 20vw;
    height: 45vh;
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
}

.CalculadoraCientifica{
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: #2c5aa0;
    border-radius: 10px;
    width: 45vw;
    height: 51vh;
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
}

/* Estados para transiciones entre calculadoras */
.CalculadoraNormal.fade-out,
.CalculadoraCientifica.fade-out {
    opacity: 0;
    transform: scale(0.95);
}

.CalculadoraNormal.fade-in,
.CalculadoraCientifica.fade-in {
    opacity: 1;
    transform: scale(1);
}

.CalculadoraCientifica input{
    margin-bottom: 15px;
    width: 95%;
    padding: 15px;
    font-size: 20px;
    text-align: right;
    border: 2px solid #333;
    border-radius: 8px;
    background-color: #fff;
}

.CalculadoraCientifica .BotonesContainer {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr;
    grid-gap: 15px;
    width: 100%;
    height: 100%;
    flex-grow: 1;
}

.Menu{
    background-color: #2c3e50;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 25vw;
    transform: translateX(-100%);
    opacity: 0;
    transition: transform 0.5s ease-in-out, opacity 0.5s ease-in-out;
    z-index: 1200;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
}

.Menu.show {
    transform: translateX(0);
    opacity: 1;
}

.menu-header {
    background-color: #34495e;
    padding: 20px;
    border-bottom: 2px solid #3498db;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1000;
    pointer-events: auto;
}

.menu-header h1 {
    color: white;
    margin: 0;
    font-size: 24px;
    flex: 1;
}

.clear-btn {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    z-index: 1003;
    pointer-events: auto;
    min-width: 60px;
    flex-shrink: 0;
}

.clear-btn:hover {
    background-color: #c0392b;
    transform: translateY(-50%) scale(1.05);
}

.historial-container {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.historial-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.historial-item {
    background-color: #ecf0f1;
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s;
    border-left: 4px solid #3498db;
}

.historial-item:hover {
    background-color: #d5dbdb;
    transform: translateX(5px);
}

.historial-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.historial-operation {
    font-size: 16px;
    color: #2c3e50;
    flex: 1;
    margin-right: 10px;
}

.historial-tipo {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 70px;
    text-align: center;
    flex-shrink: 0;
}

.historial-result {
    font-size: 18px;
    font-weight: bold;
    color: #27ae60;
}

.historial-time {
    font-size: 12px;
    color: #7f8c8d;
    margin-top: 5px;
}

.copyright {
    background-color: #2c3e50;
    padding: 15px 20px;
    border-top: 1px solid #34495e;
    margin-top: auto;
}

.copyright p {
    margin: 0;
    font-size: 11px;
    color: #95a5a6;
    text-align: center;
    letter-spacing: 0.5px;
}

.numeros-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(4, 1fr);
    grid-gap: 8px;
}

.funciones-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(5, 1fr);
    grid-gap: 8px;
    align-content: start;
}

.controles-section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding-left: 20px;
}

.numeros-section button,
.funciones-section button,
.controles-section button {
    width: 100%;
    height: 100%;
    min-height: 50px;
    font-size: 16px;
    font-weight: bold;
    border: 2px solid #333;
    border-radius: 8px;
    background-color: #f0f0f0;
    cursor: pointer;
    transition: all 0.2s;
}

.numeros-section button:hover,
.funciones-section button:hover,
.controles-section button:hover {
    background-color: #e0e0e0;
    transform: scale(1.05);
}

.funciones-section button {
    background-color: #e3f2fd;
    border-color: #2196F3;
}

.funciones-section button:hover {
    background-color: #bbdefb;
}

.CalculadoraNormal input{
    margin-bottom: 15px;
    width: 95%;
    padding: 15px;
    font-size: 20px;
    text-align: right;
    border: 2px solid #333;
    border-radius: 8px;
    background-color: #fff;
}

.BotonesContainer {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 8px;
    justify-content: center;
    width: 100%;
    height: 100%;
    flex-grow: 1;
}

.BotonesContainer button {
    width: 100%;
    height: 100%;
    min-height: 50px;
    font-size: 18px;
    font-weight: bold;
    border: 2px solid #333;
    border-radius: 8px;
    background-color: #f0f0f0;
    cursor: pointer;
    transition: all 0.2s;
}

.BotonesContainer button:hover {
    background-color: #e0e0e0;
    transform: scale(1.05);
}

.BotonesContainer button:active {
    background-color: #d0d0d0;
    transform: scale(0.95);
}

header{
    position: fixed;
    top: 10px;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    width: 100%;
}

:root{
    --clr: #262433
}

.Historial{
    display: flex;
    justify-content: flex-start;
    align-items: center;
    order: -1;
    margin-left: 1%;
    background-color: #fff;
    height: 8vh;
    width: 3.5vw;
    border-radius: 20px;
    z-index: 1100;
}

.Historial ion-icon{
    font-size: 36px;
    cursor: pointer;
    margin-left: 8px;
}

.navigation {
    width: 10%;
    height: 70px;
    background: #fff;
    position: relative;
    display: flex;
    justify-content: center;
    z-index: 1;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    padding-right: 30px;
    margin-right: 20px;
}

.navigation ul {
    display: flex;
    width: 140px;
}

.navigation ul li {
    position: relative;
    list-style: none;
    width: 70px;
    height: 70px;
    z-index: 1;
}

.navigation ul li a {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    width: 100%;
    height: 100%;
    text-align: center;
    font-weight: 500;
}

.navigation ul li a .icon {
    position: relative;
    display: block;
    line-height: normal;
    font-size: 1.5em;
    text-align: center;
    transition: 0.5s;
    color: #000;
    opacity: 0.75;
}

.navigation ul li.active a .icon {
    transform: translateY(-8px);
    opacity: 1;
    color: #29fd;
}

.indicator {
    position: absolute;
    top: -10px;
    width: 70px;
    height: 70px;
    border-bottom-left-radius: 35px;
    border-bottom-right-radius: 35px;
    border: 6px solid var(--clr);
    background: var(--clr);
    cursor: pointer;
    transition: 0.5s;
}

.indicator::before {
    content: "";
    position: absolute;
    top: 4px;
    left: -25.75px;
    width: 20px;
    height: 20px;
    border-top-right-radius: 20px;
    box-shadow: 4px -6px 0 2px var(--clr);
}

.indicator::after {
    content: "";
    position: absolute;
    top: 4px;
    right: -25.75px;
    width: 20px;
    height: 20px;
    border-top-left-radius: 20px;
    box-shadow: -4px -6px 0 2px var(--clr);
    z-index: -1;
}

.navigation ul li:nth-child(2).active ~ .indicator {
    transform: translateX(calc(70px * 1));
}

.navigation ul li:nth-child(3).active ~ .indicator {
    transform: translateX(calc(70px * 2));
}

.navigation ul li:nth-child(4).active ~ .indicator {
    transform: translateX(calc(70px * 3));
}

.navigation ul li:nth-child(5).active ~ .indicator {
    transform: translateX(calc(70px * 4));
}

.indicator span {
    position: absolute;
    bottom: 3px;
    width: 60px;
    height: 60px;
    border: 4px solid #29fd;
    background: #fff;
    border-radius: 50%;
    transform-origin: bottom;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    transform: scale(0.85);
}