/* Variables de colores */
:root {
    --color-primario: rgb(38, 186, 165);
    --color-secundario: rgb(55, 95, 122);
    --color-primario-claro: rgb(58, 206, 185);
    --color-primario-clarito: rgb(185, 231, 224);
    --color-primario-oscuro: rgb(28, 166, 145);
    --color-secundario-claro: rgb(75, 115, 142);
    --color-secundario-oscuro: rgb(35, 75, 102);
    
    --color-accent: rgb(255, 193, 7);
    --color-accent-border: rgb(174, 132, 3);

    --color-success: rgb(40, 167, 69);
    --color-warning: rgb(255, 152, 0);
    --color-info: rgb(23, 162, 184);
    --color-light: rgb(248, 249, 250);
    --color-dark: rgb(52, 58, 64);
    --color-white: rgb(255, 255, 255);
    --color-gray: rgb(108, 117, 125);
    --color-gray-light: rgb(233, 236, 239);
    --sombra-suave: 0 4px 6px rgba(0, 0, 0, 0.1);
    --sombra-media: 0 6px 12px rgba(0, 0, 0, 0.15);
    --sombra-fuerte: 0 10px 20px rgba(0, 0, 0, 0.2);
    --border-radius: 12px;
    --border-radius-circulo: 50%;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-secundario) 100%);
    min-height: 100vh;
    color: var(--color-dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header con logotipo */
.header {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: var(--sombra-media);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, var(--color-primario), var(--color-secundario));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 24px;
    font-weight: bold;
    box-shadow: var(--sombra-suave);
}

.logo-text {
    font-size: 28px;
    font-weight: bold;
    color: var(--color-secundario);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.optimism-image {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-circulo);
    object-fit: cover;
    border: 3px solid var(--color-primario);
    box-shadow: var(--sombra-suave);
}

/* Panel de entrada */
.input-panel {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 1px;  /*espacio despues de los inputs*/
    margin-bottom: 2px;
    box-shadow: var(--sombra-media);
    text-align: center;
}

.input-panel h2 {
    color: var(--color-secundario);
    margin-bottom: 1px;
    font-size: 24px;
    font-weight: 600;
}

.input-group {
    display: flex;
    gap: 15px;
    justify-content: center;
    align-items: flex-end;
    flex-wrap: nowrap;
    margin-bottom: 25px;
    width: 90%;
    margin-left: auto;
    margin-right: auto;
}

.input-field {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    min-width: 150px;
}

.input-field.dividendo {
    flex: 2;
}

.input-field.divisor {
    flex: 1;
}

.input-field label {
    font-weight: 600;
    color: var(--color-secundario);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-field input {
    padding: 12px 15px;
    border: 2px solid var(--color-gray-light);
    border-radius: var(--border-radius);
    font-size: 20px;
    text-align: center;
    width: 100%;
    transition: all 0.3s ease;
    background: var(--color-white);
}

.input-field input:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 0 0 3px rgba(38, 186, 165, 0.1);
    transform: translateY(-2px);
}

/* Estilos para mensajes de error */
.input-field input.error {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.error-container {
    min-height: 0px;
    margin-top: 2px;
    line-height: 1.2; 
}

.error-message {
    color: #dc3545;
    font-size: 12px;
    margin: 0;
    font-weight: 500;
    text-align: center;
    animation: fadeIn 0.6s ease;
    
}
.alert-error {
    border-left-color: #dc3545;
    background: linear-gradient(135deg, #fff 0%, #fff5f5 100%);
    
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* .btn-iniciar {
    background: linear-gradient(45deg, var(--color-primario), var(--color-primario-claro));
    color: var(--color-white);
    border: none;
    padding: 12px 12px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--sombra-suave);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    align-self: flex-start;
    margin-bottom: 5px;
} */

/* .btn-iniciar {
    background: linear-gradient(45deg, var(--color-primario), var(--color-primario-claro));
    color: var(--color-white);
    border: none;
    padding: 1px 12px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--sombra-suave);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    align-self: flex-start;  
    margin-top: 25px;        
    margin-bottom: 0;        
    /* Quitar flex: 1 
    height: 46px; 
} */

.btn-iniciar {
    background: linear-gradient(45deg, var(--color-primario), var(--color-primario-claro));
    color: var(--color-white);
    border: none;
    padding: 0 16px;              /* Cambio aquí */
    height: 45px;                 /* Nuevo */
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--sombra-suave);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    align-self: flex-start;
    margin-top: 28px;
    margin-bottom: 0;

    display: flex;
    align-items: center;
    justify-content: center;
}



.btn-iniciar::before {
    content: '';
    display: block;
    height: 20px; /* Altura aproximada del label */
    /*margin-bottom: 8px; /* Spacing entre label e input */
}

.btn-iniciar:hover {
    transform: translateY(-3px);
    box-shadow: var(--sombra-media);
    background: linear-gradient(45deg, var(--color-primario-oscuro), var(--color-primario));
}

/* Panel de control (botones en la parte superior) */
.control-panel {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 3px;
    margin-bottom: 5px;
    box-shadow: var(--sombra-media);
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.control-btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--sombra-suave);
    min-width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Iconos para pantallas pequeñas */
.control-btn::before {
    display: none;
    font-size: 18px;
}

.btn-reiniciar::before {
    content: "↺";
}

.btn-atras::before {
    content: "◀";
}

.btn-siguiente::before {
    content: "▶";
}

.btn-resolver-todo::before {
    content: "⏭";
}

/* Ocultar texto en pantallas pequeñas */
.btn-text {
    display: inline;
}

.btn-reiniciar {
    background: var(--color-primario-claro);
    color: var(--color-white);
}

.btn-atras {
    background: var(--color-primario);
    color: var(--color-white);
}

.btn-siguiente {
    background: var(--color-secundario);
    color: var(--color-white);
}

.btn-resolver-todo {
    background: var(--color-secundario-claro);
    color: var(--color-white);
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--sombra-media);
}

.control-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Panel de división */
.division-grid {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 1px; /* espacio entre */
    box-shadow: var(--sombra-media);
    display: none;
}

.grid-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

/* Cuadrícula tipo cuaderno */
.cuaderno-matriz {
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--sombra-fuerte);
    border: 3px solid var(--color-secundario);
}

.cuadro-celda {
    width: 50px;
    height: 50px;
    border: 1px solid var(--color-secundario-claro);
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    background: var(--color-white);
    transition: all 0.3s ease;
    position: relative;
    padding: 2px;
}

.cuadro-celda:hover {
    background: var(--color-primario-clarito);
    transform: scale(1.08);
}

/* Resaltados con círculos simples */
.resaltado-dividendo {
    background-color: var(--color-primario) !important;
    color: var(--color-white) !important;
    font-weight: bold;
    border-radius: 50%;
    padding: 2px 4px;
}

.resaltado-divisor {
    background-color: var(--color-secundario) !important;
    color: var(--color-white) !important;
    font-weight: bold;
    border-radius: 50%;
    padding: 2px 4px;
}

.resaltado-cociente {
    background-color: var(--color-success) !important;
    color: var(--color-white) !important;
    font-weight: bold;
    border-radius: 50%;
    padding: 2px 4px;
}

.resaltado-residuo {
    background-color: var(--color-warning) !important;
    color: var(--color-white) !important;
    font-weight: bold;
    border-radius: 50%;
    padding: 2px 4px;

    
}

.resaltado-bajada {
    background-color: var(--color-accent) !important;
    color: var(--color-dark) !important;
    font-weight: bold;
    border-radius: 50%;
    padding: 2px 4px;
}

.redondear{
   /* Cambiamos solo el border-radius (de 50% a 5px) */
    border-radius: 5px !important; 
    padding: 3px 6px !important;
    /* Aseguramos que el elemento se comporte como inline-block */
    display: inline-block;
    line-height: 1;
    
}
/* Animaciones */
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: var(--sombra-suave);
    }
    50% {
        transform: scale(1.1);
        box-shadow: var(--sombra-media);
    }
    100% {
        transform: scale(1);
        box-shadow: var(--sombra-suave);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-5px);
    }
    60% {
        transform: translateY(-3px);
    }
}

/* Panel de explicación (parte inferior) */
.explanation-panel {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 5px;
    box-shadow: var(--sombra-media);
    margin-bottom: 2px;
}

.explanation-content {
    display: flex;
    flex-direction: column;
    gap: 1px; 
    align-items: center;
}

.explanation-line {
    background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-secundario) 100%);
    color: var(--color-white);
    padding: 15px 25px;
    border-radius: var(--border-radius);
    text-align: center;
    font-size: 15px;
    line-height: 1.4;
    box-shadow: var(--sombra-suave);
    max-width: 600px;
    width: 100%;
}

.explanation-line strong {
    color: var(--color-accent);
    font-size: 18px;
}

.explanation-line em {
    font-style: normal;
    opacity: 0.9;
}

/* Panel de resultado final */
.result-panel {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--sombra-media);
    text-align: center;
    display: none;
}

.result-panel h3 {
    color: var(--color-secundario);
    margin-bottom: 20px;
    font-size: 24px;
}

.result-content {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.result-item {
    background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-primario-claro) 100%);
    color: var(--color-white);
    padding: 20px;
    border-radius: var(--border-radius);
    min-width: 150px;
    box-shadow: var(--sombra-suave);
}

.result-item h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.result-item .value {
    font-size: 24px;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .input-group {
        flex-direction: row;
        gap: 10px;
        flex-wrap: nowrap;
        align-items: flex-end;
        width: 95%;
        margin-left: auto;
        margin-right: auto;

    }
    
    .input-field.dividendo {
        flex: 3;
    }
    
    .input-field.divisor {
        flex: 1;
    }
    
    .input-field {
        min-width: 120px;
    }
    
    .input-field input {
        width: 100%;
        padding: 12px 15px;
        font-size: 18px;
    }
    
  
    
    .control-panel {
        flex-direction: row;
        align-items: center;
        gap: 8px;
    }
    
    .control-btn {
        width: 50px;
        height: 50px;
        padding: 0;
        font-size: 0;
        min-width: 50px;
    }
    
    /* Mostrar solo iconos en pantallas pequeñas */
    .control-btn::before {
        display: block;
        font-size: 20px;
    }
    
    /* Ocultar texto en pantallas pequeñas */
    .btn-text {
        display: none;
    }
    
    .cuadro-celda {
        width: 40px;
        height: 40px;
        font-size: 16px;
        padding: 1px;
    }
    
    .result-content {
        flex-direction: column;
        align-items: center;
    }
    
    /* Ajustar padding para evitar distorsiones */
    .division-grid {
        padding: 15px;
    }
    
    .explanation-panel {
        padding: 3px;
    }
    
    .explanation-line {
        padding: 5px 18px;
        font-size: 14px;
        
    }
}

@media (max-width: 480px) {
    .btn-iniciar {
        padding: 0 10px; /* Ajustar padding para pantallas pequeñas */
        height: 35px; /* Ajustar altura */
        font-size: 14px; /* Reducir tamaño de fuente */
        margin-top: 24px; /* Ajustar margen superior */
    }
    .input-group {
        gap: 8px;
        align-items: start;
    }
    
    .input-field {
        min-width: 100px;
    }
    
    .input-field input {
        width: 100%;
        padding: 4px 10px;
        font-size: 20px;
        border-radius: 5px;
        border: solid 1px var(--color-primario-oscuro);
    }

    
    .cuadro-celda {
        width: 35px;
        height: 35px;
        font-size: 14px;
        padding: 1px;
    }
    
    .explanation-line {
        font-size: 12px;
        padding: 3px 3px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
    }
    
    .control-btn::before {
        font-size: 18px;
    }
    
    /* Mantener texto oculto en pantallas muy pequeñas */
    .btn-text {
        display: none;
    }
}

/* Contenedor para alertas personalizadas */
.alert-container {
    margin-bottom: 20px;
}

.alert {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 15px 20px;
    margin-bottom: 10px;
    box-shadow: var(--sombra-media);
    border-left: 4px solid;
    animation: slideIn 0.3s ease;
}


.alert-info {
    border-left-color: var(--color-info);
    background: linear-gradient(135deg, #fff 0%, #f0f9ff 100%);
}

.alert-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.alert-message {
    flex: 1;
    color: red;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
}

.alert-close {
    background: none;
    border: none;
    font-size: 20px;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.alert-close:hover {
    background: #f0f0f0;
    color: #666;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}