* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Roboto, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root {
    --color-purple: #5f4f8b;
    --color-light-purple: #b8a0d4;
    --color-text: #141414;
    --color-white: #fff;
    --color-bg: #f4f4f4;
    --color-grey: #d8d8d8;
}

.container {
    width: 80%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

p {
    color: var(--color-text);
    font-size: 1rem;
}

hr {
    width: 100%;
    border: 1px solid #e6e6e6;
    margin: 1rem auto;
}

/******************* NADPIS *******************/

.nadpis {
    width: 100%;
    padding: 20px;
    text-align: center;
}

h1 {
    color: var(--color-purple);
    font-size: 2rem;
    margin-bottom: 10px;
}

a {
    color: var(--color-purple);
    text-decoration: none;
}


/********************* HLAVNÍ OBSAH *********************/
.main-content {
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
    border-radius: 10px;
    margin: auto;
}

/******************* KALKULAČKA *******************/


input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none;     /* skrýt šipky */
  margin: 0;
}

.kalkulacka {
    width: 55%;
    background-color: var(--color-bg);
    padding: 2rem 1rem;
    border-radius: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.kalkulacka h2 {
    color: var(--color-purple);
    font-size: 2rem;
    text-align: center;
}

.kalkulacka .input-output {
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    gap: 1.5rem
}

.napoveda {
    margin-top: 1rem;
    display: none;
}

/***************** INPUT **************************/

.kalkulacka .input-output .input {
    display: flex;
    flex-direction: column;
    min-width: 50%;
}

.kalkulacka .input-output .input p {
    padding-bottom: 0.5rem;
}

.kalkulacka .input-output .input input {
    padding: 1rem;
    border: 1px solid var(--color-purple);
    border-radius: 2rem;
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 1rem;
    min-width: 220px;
    max-width: 250px;
    text-align: right;
}

.kalkulacka .input-output .input input:focus {
    border-color: var(--color-text);
    outline: none;
}

.kalkulacka .input-output .input button {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-purple);
    color: var(--color-white);
    border: none;
    border-radius: 2rem;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 10px;
    min-width: 220px;
    max-width: 250px;
}

.kalkulacka .input-output .input .form-error {
    color: red; 
    text-align: center;
}

/***************** OUTPUT **************************/
.kalkulacka .input-output .output {
    display: flex;
    flex-direction: column;
    margin-right: 1rem;
    min-width: 50%;
}

.kalkulacka .input-output .output .vysledek {
    display: flex;
    align-items: center;
    font-weight: normal;
    background: var(--color-grey);
    border: 1px solid var(--color-purple);
    border-radius: 2rem;
    word-break: break-all;
    min-width: 220px;
    max-width: 250px;
    text-align: right;
    display: block;
    box-sizing: border-box;
    color: var(--color-text);
    margin: 0.5rem 0 1rem; 
    font-size: 1rem;
    height: 52px;
    padding: 1rem;
}

/******************** KONTAKT ********************/
.contact {
    width: 35%;
    padding: 20px;
    margin-left: 20px;
    display: flex;
    flex-direction: column;
}

.contact h2 {
    margin-bottom: 15px;
    text-align: center;
    font-size: 1.8rem;
}

.contact h3 {
    color: var(--color-purple);
    margin-bottom: 10px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: normal;
}

.contact p {
    text-align: justify;
    margin: 1rem auto;
}

.contact .button {
    width: 55%;
    padding: 1rem;
    background-color: var(--color-purple);
    color: var(--color-white);
    border: none;
    border-radius: 2rem;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    margin: 1rem auto;
}
/*************************** TOOLTIP **************************/
.text {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    min-width: 220px;
    max-width: 250px;
}
.tooltip {
  position: relative;
  display: inline-block;
  cursor: help;
}


.tooltip .tooltiptext {
  visibility: hidden;
  width: 240px;
  background-color: #5f4f8b;
  color: #fff;
  text-align: center;
  border-radius: 0.5em;
  padding: 0.7em 1em;
  position: absolute;
  z-index: 10;
  bottom: 125%; 
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.2s;
  font-size: 0.95em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}
/**************************** MODAL WINDOW - KONTAKT **************************/
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    overflow: auto;
    background: rgba(0,0,0,0.4);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--color-white);
    margin: auto;
    padding: 2rem 2.5rem;
    border-radius: 1.5rem;
    box-shadow: 0 4px 32px rgba(0,0,0,0.15);
    max-width: 500px;
    width: 90%;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-content h2 {
    color: var(--color-purple);
    text-align: center;
    margin-bottom: 1rem;
}

.modal-content p {
    margin-bottom: 0.5rem;
}

.modal-content .close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--color-purple);
    cursor: pointer;
    font-weight: bold;
    transition: color 0.2s;
}

.modal-content .close:hover {
    color: #333;
}

.modal-content input,
.modal-content textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--color-purple);
    border-radius: 2rem;
    font-size: 1rem;
    margin-bottom: 1rem;
    box-sizing: border-box;
    resize: none;
}

.modal-content input:focus,
.modal-content textarea:focus {
    border-color: var(--color-text);
    outline: none;
}

.modal-content button {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-purple);
    color: var(--color-white);
    border: none;
    border-radius: 2rem;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 0.5rem;
}


#hlaska {
    display: none;
    color: green;
    margin: 0.5rem 0;
    text-align: center;
}

/**************************** INFORMACE **************************/

.info-kalkulacka {
    display: flex;
    flex-direction: column;
    text-align: justify;
    gap: 1.5rem;
    margin-top: 1rem;
}

.info-kalkulacka h3 {
    color: var(--color-purple);
    font-size: 1.5rem;
}

.info-kalkulacka ul {
    margin: 1rem;
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 1rem;
}

.info-kalkulacka ul li {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.info-line {
    display: none;
}

button:disabled {
    background-color: grey !important;
}

/***************** MEDIA ******************/

/* smaller desktop */

@media (max-width: 1200px) {
    .container {
        width: 95%;
    }

    .kalkulacka, .contact {
        width: 100%;
        margin: 0;
    }

}

/* tablet */
@media (max-width: 900px) {

    .container {
        width: 90%;
        padding: 0rem;
    }

    .main-content {
        flex-direction: column;
        gap: 2rem;
    }

    .kalkulacka, .contact {
        width: 100%;
        margin: .5rem;
    }


    .kalkulacka .input-output .input, 
    .kalkulacka .input-output .output {
        width: 90%;
    }

    .contact p {
        text-align: center;
    }
    .contact .button {
        max-width: 50%;
    }

    .info-line {
        display: block;
    }

    .tablet {
        display: block;
        text-align: center;
        min-width: 220px;
        max-width: 250px;
    }
}

/* mobile */
@media (max-width: 600px) {
    .container {
        width: 100%;
        margin: 0rem ;
    }

    .main-content {
        flex-direction: column;
        gap: 1rem;
    }

    .kalkulacka {
        width: 100%;
    }

    .kalkulacka h2, 
    .contact h2, 
    .contact h3 {
        font-size: 1.5rem;
    }

    .kalkulacka .input-output {
        flex-direction: column;
        padding: 0rem 0rem;
    }

    .kalkulacka .input-output .input, 
    .kalkulacka .input-output .output {
        width: 100%;
    }

    .info-kalkulacka {
        padding: 1rem;
    }

    .contact .button {
        max-width: 80%;
        min-width: 180px;
    }

    hr {
        width: 90%;
    }

    .tablet {
        display: none;
    }

    .mobile {
        display: block;
        text-align: center;
    }

    .kalkulacka .input-output .output .vysledek,
    .kalkulacka .input-output .input input,
    .kalkulacka .input-output .input button,
    .text {
        min-width: 100%;
        max-width: 100%;
    }

    .info-kalkulacka h3,
    .vypocet p,
    .vysledek p {
        text-align: center;
    }

    .vypocet ul li,
    .vysledek ul li {
        text-align: left;
        margin-left: .5rem;
    }

    .vypocet ul,
    .vysledek ul {
        padding: 1.5rem;
    }
}
@media (max-width: 768px) {

    .tooltip .tooltiptext {
    width: auto;
    position: absolute;
    z-index: 10;
    bottom: 125%; 
    left: -300%;
    transform: translateX(-50%);
    }

}