:root {
    --font-family: Arial, Helvetica, sans-serif;
    --light-bg-color: #f9f9f9;
    --light-text-color: #333;
    --dark-bg-color: #161618;
    --dark-text-color: #f9f9f9;
    --header-footer-color-light: #555;
    --header-footer-color-dark: #cccccc;
    --link-color-light: #7d7d7d;
    --link-color-dark: #dcdcdc;
    --border-color-light: #ddd;
    --border-color-dark: #555;
    --card-bg-light: #fff;
    --card-bg-dark: #252528;
    --button-bg-light: #343434;
    --button-text-color-light: rgb(222, 222, 222);
    --button-bg-dark: #f0f0f0;
    --button-text-color-dark: rgb(37, 37, 37);
    --transition-duration: 0.3s;
    --padding: 8px;
    --border-radius: 8px;
    --box-shadow-light: rgba(0, 0, 0, 0.1);
    --box-shadow-dark: rgba(0, 0, 0, 0.2);
    --dim-text: 0.9;
    --default-margin: 8px
}

body {
    --bg-color: var(--dark-bg-color);
    --text-color: var(--dark-text-color);
    --card-bg-color: var(--card-bg-dark);
    --border-color: var(--border-color-dark);
    --button-bg-color: var(--button-bg-dark);
    --button-text-color: var(--button-text-color-dark);
    --header-footer-color: var(--header-footer-color-dark);
    --link-color: var(--link-color-dark)
}

body.light {
    --bg-color: var(--light-bg-color);
    --text-color: var(--light-text-color);
    --card-bg-color: var(--card-bg-light);
    --border-color: var(--border-color-light);
    --button-bg-color: var(--button-bg-light);
    --button-text-color: var(--button-text-color-light);
    --header-footer-color: var(--header-footer-color-light);
    --link-color: var(--link-color-light)
}

body {
    font-family: var(--font-family);
    margin: var(--default-margin)auto;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-duration), color var(--transition-duration);
    width: 80%;
    height: 100%
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--default-margin)auto;
    color: var(--header-footer-color);
    margin-top: 8px
}

header div {
    display: flex;
    align-items: center;
    justify-content: space-between
}

header img {
    height: 32px
}

header nav ul {
    list-style: none;
    display: flex;
    gap: 1rem
}

header a {
    text-decoration: none;
    color: var(--link-color);
    font-weight: bold;
    transition: color var(--transition-duration)
}

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: var(--default-margin)auto;
    color: var(--header-footer-color);
    margin-top: auto;
    margin-bottom: 8px
}

p {
    font-size: 14px;
    opacity: var(--dim-text)
}

.hero {
    width: 100%;
    height: 86vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center
}

.hero img {
    width: 176px;
    border-radius: 50%;
    margin: 16px
}

.hero h1,
.hero h4 {
    margin: 0
}

.hero h4 {
    margin-bottom: 16px;
    color: #b1b1b1
}

.hero p {
    margin: 2px;
    color: #b1b1b1
}

.hero button {
    margin-top: 16px
}

.icon-link {
    display: flex;
    justify-content: center;
    margin: var(--default-margin)auto
}

.icon-link a {
    font-size: 28px;
    color: rgb(170, 170, 170);
    padding: 8px;
    transition: color var(--transition-duration)
}

.icon-link a:hover {
    color: var(--link-color)
}

.container {
    margin: auto
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
    padding: 10px 0
}

.card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: 0 2px 4px var(--box-shadow-light);
    transition: box-shadow var(--transition-duration);
    display: flex;
    flex-direction: column;
    justify-content: space-between
}

.card h3 {
    margin-bottom: 2px
}

.card button {
    width: 100%;
    margin-top: auto
}

.card:hover {
    box-shadow: 0 4px 8px var(--box-shadow-dark)
}

button {
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    padding: var(--padding)20px;
    border-radius: 32px;
    transition: background-color var(--transition-duration);
    font-weight: bold;
    border: none;
    cursor: pointer
}

.theme-switch input {
    display: none
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 28px;
    height: 18px
}

.slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #a5a5a5;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-duration)
}

.slider:before {
    position: absolute;
    left: -1px;
    bottom: 1px;
    content: '🌘';
    font-size: 14px;
    transition: transform var(--transition-duration), content var(--transition-duration)
}

input:checked+.slider {
    background-color: #7e7e7e
}

input:checked+.slider:before {
    transform: translateX(10px);
    content: '☀️'
}

.badge {
    border-color: #536adb;
    border-style: solid;
    border-width: 2px;
    border-radius: 4px;
    padding: 2px 8px;
    text-wrap: nowrap
}