:root {
    /* Main variables. */
    --main-color: #1f1f1f;
    --main-text-color: #ffffff;
    --main-green: #006400;
    --main-yellow: #6d6d00;
    --hover-color: #ffd700;

    /* Navbar variables. */
    --nav-color: #000000;
    --nav-text-color: #ffffff;
    --nav-hover-color: #616161;

    /* Common media query variables. */
    --media-phone-max: 576px;
    --media-tablet-max: 800px;
    --media-large-tablet-max: 1024px;
}

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

body {
    background: var(--main-color);
    color: var(--main-text-color);
}

#page-container {
    position: relative;
    min-height: 100vh;
}

#myapp-main {
    padding-bottom: 56px;
}

.dn {
    display: none !important;
}

.center {
    margin: auto;
    text-align: center;
}

.center-btn {
    display: block !important;
    margin: auto !important;
}

.bold {
    font-weight: bold;
}

.w100 {
    width: 100%;
}

.h100 {
    height: 100%;
}

.rounded {
    border-radius: 25px;
}

.red-text {
    color: red;
}

.green-text {
    color: lime;
}

.background {
    background: -webkit-linear-gradient(
        0,
        var(--main-yellow),
        var(--main-green)
    );
    background: linear-gradient(0, var(--main-yellow), var(--main-green));
}

.background-opposite {
    background: -webkit-linear-gradient(
        0,
        var(--main-green),
        var(--main-yellow)
    );
    background: linear-gradient(0, var(--main-green), var(--main-yellow));
}

.text-border {
    text-shadow: -1px -1px 0 var(--nav-color), 1px -1px 0 var(--nav-color),
        -1px 1px 0 var(--nav-color), 1px 1px 0 var(--nav-color);
}

.pointer {
    cursor: pointer;
}

.container {
    margin: 15px auto;
}

.top-text {
    margin: 50px;
    padding: 50px;
}

.top-text h1 {
    font-size: 50px;
}

.top-text p {
    font-size: 25px;
}

.flex {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.flex-wrap {
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.col {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

.jcc {
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.asc {
    -webkit-align-self: center;
    -ms-flex-item-align: center;
    align-self: center;
}

.aic {
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

.remove-a-style {
    text-decoration: none;
    color: var(--main-text-color);
}

.main-button {
    display: inline-block;
    padding: 0.3em 1.2em;
    margin: 0 0.1em 0.1em 0;
    border: 0.1em solid transparent;
    border-radius: 2em;
    text-decoration: none;
    color: var(--main-text-color);
    text-shadow: 0 0.04em 0.04em rgba(0, 0, 0, 0.35);
    text-align: center;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
    background: var(--nav-color);
    cursor: pointer;
    outline: none;
}

.main-button:hover {
    border-color: white;
}

/* Custom navbar CSS */
nav.navbar {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    height: 56px;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    background: var(--nav-color);
    color: var(--nav-text-color);
}

nav.navbar img {
    height: 100%;
    cursor: pointer;
}

nav.navbar ul {
    list-style-type: none;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    height: 100%;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    padding: 0;
}

nav.navbar ul li a {
    display: block;
    text-decoration: none;
    color: var(--nav-text-color);
    text-align: center;
    padding: 15px;
    -webkit-transition: background 500ms ease;
    transition: background 500ms ease;
}

nav.navbar ul li a:hover {
    background: var(--main-green);
}

/* Custom bottombar CSS */
footer.bottombar {
    width: 100%;
    height: 56px;
    position: absolute;
    left: 0;
    bottom: 0;
}

footer.bottombar ul {
    display: inline-grid;
    grid-auto-flow: row;
    grid-gap: 24px;
    justify-items: center;
    margin: auto;
    grid-auto-flow: column;
    list-style-type: square;
}

footer.bottombar ul li a {
    color: white;
    text-decoration: none;
    box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.4);
}

footer.bottombar ul li a:hover {
    color: white;
    text-decoration: none;
    box-shadow: inset 0 -1.2em 0 rgba(255, 255, 255, 0.4);
}

footer.bottombar div {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    height: 100%;
    width: 100%;
    background-color: black;
    line-height: 1.3;
}

/* Custom Input CSS */
.input {
    width: 100%;
    position: relative;
    border-bottom: 2px solid var(--main-text-color);
    margin: 2rem auto 1rem;
    -webkit-transition: 500ms;
    transition: 500ms;
}

.input::after {
    content: '';
    position: relative;
    display: block;
    height: 4px;
    width: 100%;
    background: -webkit-linear-gradient(
        90deg,
        var(--main-yellow),
        var(--main-green)
    );
    background: linear-gradient(90deg, var(--main-yellow), var(--main-green));
    -webkit-transform: scaleX(0);
    -ms-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transform-origin: 0%;
    -ms-transform-origin: 0%;
    transform-origin: 0%;
    -webkit-transition: -webkit-transform 500ms ease;
    transition: transform 500ms ease;
    top: 2px;
}

.input:focus-within {
    border-color: transparent;
}

.input:focus-within::after {
    -webkit-transform: scaleX(1);
    -ms-transform: scaleX(1);
    transform: scaleX(1);
    opacity: 1;
}

.input input {
    outline: none;
    border: none;
    overflow: hidden;
    margin: 0;
    width: 100%;
    padding: 0.25rem 0;
    background: none;
    color: var(--main-text-color);
    font-size: 1.2em;
    font-weight: bold;
    -webkit-transition: border 500ms;
    transition: border 500ms;
}

.input label {
    color: var(--main-text-color);
    font-size: 1.2rem;
    z-index: -1;
    position: absolute;
    -webkit-transform: translateY(-2rem);
    -ms-transform: translateY(-2rem);
    transform: translateY(-2rem);
    -webkit-transform-origin: 0%;
    -ms-transform-origin: 0%;
    transform-origin: 0%;
    -webkit-transition: -webkit-transform 400ms;
    transition: transform 400ms;
    left: 0;
    bottom: -90%;
}

.input:focus-within label,
.input input:not(:placeholder-shown) + label {
    -webkit-transform: scale(0.8) translateY(-5rem);
    -ms-transform: scale(0.8) translateY(-5rem);
    transform: scale(0.8) translateY(-5rem);
    opacity: 1;
}

/* Custom expansionpanel CSS */
.expansion-panel {
    overflow: hidden;
}

.expansion-panel.expansion-panel-sizer {
    position: fixed;
    visibility: hidden;
    user-select: none;
    pointer-events: none;
    top: -1000%;
}

.expansion-panel .expansion-panel-header {
    outline: none;
    position: relative;
}

.expansion-panel .expansion-panel-header,
.expansion-panel .expansion-panel-header div:not(.expansion-panel-arrow) {
    min-height: 40px;
}

.expansion-panel .expansion-panel-content {
    -webkit-transition: height 300ms ease;
    transition: height 300ms ease;
}

.expansion-panel .expansion-panel-header .expansion-panel-arrow {
    -webkit-transition: all 250ms ease;
    transition: all 250ms ease;
    font-size: 20px;
}

.expansion-panel.expansion-panel-expanded
    .expansion-panel-header
    .expansion-panel-arrow {
    position: absolute;
    -webkit-transform: translate(-100%, -50%) rotateZ(180deg);
    -ms-transform: translate(-100%, -50%) rotateZ(180deg);
    transform: translate(-100%, -50%) rotateZ(180deg);
    right: 0;
    top: 50%;
}

.expansion-panel.expansion-panel-collapsed
    .expansion-panel-header
    .expansion-panel-arrow {
    position: absolute;
    -webkit-transform: translate(-100%, -50%);
    -ms-transform: translate(-100%, -50%);
    transform: translate(-100%, -50%);
    right: 0;
    top: 50%;
}

/* Media queries. */
@media all and (max-width: 30em) {
    .main-button {
        display: block;
        margin: 0.2em auto;
    }
}

@media all and (max-width: 700px) {
    .top-text {
        border-radius: 0;
        margin: 0;
        padding: 20px;
    }
}