/* ==========================================================================
Base styles: opinionated defaults
========================================================================== */

html {
    color: #222;
    font-size: 1em;
    line-height: 1.4;
}

::-moz-selection {
    background: #b3d4fc;
    text-shadow: none;
}

::selection {
    background: #b3d4fc;
    text-shadow: none;
}

hr {
    display: block;
    height: 1px;
    border: 0;
    border-top: 1px solid #ccc;
    margin: 1em 0;
    padding: 0;
}

audio,
canvas,
iframe,
img,
svg,
video {
    vertical-align: middle;
}

fieldset {
    border: 0;
    margin: 0;
    padding: 0;
}

textarea {
    resize: vertical;
}

/* ==========================================================================
Site styles
========================================================================== */

html,body {
    font-family: "Roboto", "Open Sans", sans-serif;
    font-size: 16px;
    margin: 0;
}

html {
    min-height: 100vh;
    background-color: #333333;
    background-image: linear-gradient(0deg, #81c1e1, #c14beb);
    color: #ffffff;
}

.contain {
    max-width: 1024px;
    padding: 24px;
    margin: 0 auto;
}

.masthead {
    text-align: center;
}

.masthead h1 {
    margin: 0;
    padding: 0;
    font-family: "Doto", system-ui;
}

.masthead .subtitle {
    margin: 0;
    padding: 0;
}

.card {
    background-color: #ffffff;
    color: #333333;
    padding: 2px;
    border-radius: 16px;
    width: 424px;
    margin: 0 auto;
    box-sizing: border-box;
}

.card-border {
    background-color: #464646;
    padding: 13px;
    border-radius: 16px;
    height: 100%;
    box-sizing: border-box;
}

.card-content {
    background-color: #ffffff;
    border-radius: 10px;
    padding: 24px 48px;
    height: 100%;
    box-sizing: border-box;
    overflow-y: auto;
}

.card-design {
    background-color: #3a3a3a;
}
.card-design .card-img {
    margin: 116px auto;
    width: 180px;
}
.card-img img {
    width: 100%;
}

.card .card-icon {
    width: 70px;
    margin: 0 auto;
    padding-bottom: 10px;
}

.card-icon img {
    width: 100%;
    filter: grayscale(0.8);
}

.card .card-title {
    margin: 0;
    font-size: 38px;
    line-height: 1.0;
}

.card .card-body {
    font-size: 23px;
    margin-top: 24px;
}

.card-suggested-module {
    display: flex;
    flex-wrap: wrap;
}

.card-suggested-module a {
    display: block;
    text-decoration: none;
    color: #ffffff;
    background-color: #5a5a5a;
    padding: 2px 8px;
    margin-right: 4px;
    margin-bottom: 4px;
    border-radius: 12px;
    font-size: 12px;
}

.card-contain {
    width: 424px;
    height: 564px;
    margin: 0 auto;
    box-sizing: border-box;
    perspective: 150rem;
    position: relative;
    box-shadow: none;
    background: none;
}

.card-contain .card {
    transition: all 0.3s ease;
    backface-visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.card-contain .card_back {
    transform: rotateY(-180deg);
}

.card-contain.flipped .card_front {
    transform: rotateY(180deg);
}

.card-contain.flipped .card_back {
    transform: rotateY(0deg);
}

.btn {
    position: relative;
    border: none;
    border-radius: 7px;
    border-bottom: 3px solid #999999;
    background-color: #ffffff;
    color: #161616;
    padding: 8px 20px;
    font-size: 16px;
}

.btn,
.btn:focus {
  user-select: auto;
}

.btn:hover:not(:disabled) {
  filter: brightness(1.1);
  -webkit-filter: brightness(1.1);
}

.btn:disabled {
  cursor: auto;
}

.btn:active {
    top: 3px;
    border-width: 4px 0 0;
    border-bottom: none;
    margin-bottom: 3px;
}

/* ==========================================================================
Media queries
========================================================================== */
@media only screen and (min-width: 840px) {
    /* Style adjustments for viewports that meet the condition */
    .contain {
        width: 1300px;
    }
}