:root {
    --filled: 30 30 30; /* dark surface */
    --contrast-filled: 240 240 240;
    --color: 240 240 240; /* light foreground */
    --contrast-color: 0 0 0;
    --active-bg: rgb(var(--color)/0.1);
    --selected-bg: rgb(var(--color)/0.2);

    --ff-primary: "Space Mono", monospace;
    --fw-regular: 400;
    --fw-semi-bold: 500;
    --fw-bold: 700;

    --fs-300: 0.8125rem;
    --fs-400: 0.875rem;
    --fs-500: 0.9375rem;
    --fs-600: 1.3rem;
    --fs-700: 1.875rem;
    --fs-800: 2.5rem;
    --fs-900: 3.5rem;

    --fs-body: var(--fs-400);
    --fs-primary-heading: var(--fs-800);
    --fs-secondary-heading: var(--fs-700);
    --fs-nav: var(--fs-500);
    --fs-button: var(--fs-300);

    --clr-primary-400: hsl(228, 39%, 23%);
    --clr-ring: #0a5e66;
    --clr-red: #c00;
    --row-width: 900px;

    --clr-bg-body: #121212;
    --clr-surface-raised: #1e1e1e;
    --clr-hover-surface: #2a2a2a;
    --clr-focus-accent: #FFFF00;
    --clr-focus-accent-fg: #000;
    --clr-spotify: #1DB954;
    --clr-placeholder: #8a8a8a;
    --clr-placeholder-focus: #4b5563;
    --clr-text-muted: #777;
    --clr-text-subtle: #555;
    --clr-text-dim: #ccc;
    --clr-border-dim: #333;
}
.button--primary {
    text-decoration: none;
    color: rgb(var(--color));
    font-family: var(--ff-primary);

    border: 0.125rem solid rgb(var(--color));
    font-weight: var(--fw-bold);
    padding: 0.5rem 0.75rem;
    border-radius: 0;
    box-shadow: .25rem .25rem 0 rgb(var(--color));
    background-color: rgb(var(--filled));
    cursor: pointer;

    transition: all 0.1s ease-in-out;
}

.button--primary:hover {
    text-decoration: underline;
    background-color: var(--clr-hover-surface);
}

.button--primary:active {
    transform: translate(0.125rem, 0.125rem);
    box-shadow: 0.125rem 0.125rem 0rem rgb(var(--color));
}

.button--primary:focus-visible {
    background-color: var(--clr-focus-accent);
    color: var(--clr-focus-accent-fg);
    outline: 0.125rem dashed rgb(var(--color));
    outline-offset: 0.25rem;
}


.input--primary {
    border: 0.125rem solid rgb(var(--color));
    border-radius: 0;
    padding: 0.75rem 1rem;
    background-color: rgb(var(--filled));
    box-shadow: 0.25rem 0.25rem 0rem rgb(var(--color));

    font-family: var(--ff-primary);
    font-size: 1rem;
    font-weight: var(--fw-bold, 700);
    color: rgb(var(--color));

    transition: all 0.1s ease-in-out;
    outline: none;
}

.input--primary::placeholder {
    color: var(--clr-placeholder);
    opacity: 0.8;
    font-weight: normal;
}

.input--primary:hover {
    background-color: var(--clr-hover-surface);
}

.input--primary:focus {
    background-color: var(--clr-focus-accent);
    color: var(--clr-focus-accent-fg);

    transform: translate(0.125rem, 0.125rem);
    box-shadow: 0.125rem 0.125rem 0rem rgb(var(--color));
}

.input--primary:focus::placeholder {
    color: var(--clr-placeholder-focus);
}

body {
    background-color: var(--clr-bg-body);
    color: #f0f0f0;
    font-family: 'Space Mono', monospace;
    overflow-x: clip;
}

h1 {
    margin-bottom: 0.5rem;
}

.container {
    display: grid;
    min-height: 100vh;
    grid-template-rows: auto 1fr auto;
    gap: 20px;
    justify-items: center;
    text-align: center;
}

.content-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 0.75rem;
    padding-top: 2rem;
}

header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 100%;
    padding-right: 0.5rem;
}

.lang-emoji {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 2rem;
    padding: 0.5rem 0.5rem;
    transition: transform 0.15s ease-in-out;
}

.lang-emoji:hover {
    transform: scale(1.3);
}

.lang-emoji { opacity: 0.35; }
.lang--active { opacity: 1; }

.example-section {
    padding: 0.5rem 1rem 1.5rem;
    width: 100%;
    max-width: 700px;
    text-align: center;
}

.example-section h2 {
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--clr-text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.example-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.playlist-card {
    border: 0.125rem solid var(--clr-border-dim);
    box-shadow: 0.25rem 0.25rem 0 var(--clr-spotify);
    padding: 1.25rem;
    min-width: 160px;
    background: var(--clr-surface-raised);
    text-align: left;
}

.playlist-card-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--clr-spotify);
    margin-bottom: 0.75rem;
}

.playlist-card ol {
    list-style: decimal inside;
    padding: 0;
}

.playlist-card li {
    padding: 0.3rem 0;
    font-size: 0.875rem;
    color: var(--clr-text-dim);
    border-bottom: 1px solid var(--clr-hover-surface);
}

.playlist-card li:last-child {
    border-bottom: none;
}

.example-arrow {
    font-size: 2rem;
    color: var(--clr-spotify);
    font-weight: 700;
    flex-shrink: 0;
}

.site-footer {
    width: 100%;
    max-width: 700px;
    padding: 1.5rem 1rem;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--clr-text-muted);
    text-align: center;
}

.site-footer__links {
    list-style: none;
    padding: 0.75rem 0 0;
    margin: 0.75rem 0 0;
    border-top: 1px solid var(--clr-hover-surface);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.25rem 1.5rem;
}

.site-footer__links li {
    text-align: center;
}

.site-footer__links li:first-child {
    text-align: left;
    padding-left: 3rem;
}

.site-footer__links li:last-child {
    text-align: right;
    padding-right: 3rem;
    white-space: nowrap;
}

.site-footer__links a {
    color: inherit;
    text-decoration: none;
}

.site-footer__links a:hover {
    text-decoration: underline;
}

.lang-form {
    display: inline;
}

.message--success {
    color: var(--clr-spotify);
}

.message--error {
    color: #e74c3c;
}

.reverse-form {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    width: min(700px, 90vw);
}

.reverse-form .input--primary {
    min-width: 0;
}

.reverse-form .button--primary {
    align-self: center;
}

.info-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0.75rem 0.5rem 0.75rem 1.5rem;
    gap: 1rem;
}

.info-header__title {
    font-size: var(--fs-600);
    margin: 0;
}

.info-header__langs {
    display: flex;
    justify-content: flex-end;
}

.info-content {
    width: min(700px, 90vw);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-bottom: 3rem;
    line-height: 1.7;
    justify-self: start;
    padding-left: 1.5rem;
}

.info-last-updated {
    margin-top: 1rem;
    font-size: var(--fs-300);
    color: var(--clr-text-muted);
}

.info-back {
    margin-top: 1.5rem;
    align-self: flex-start;
    font-size: var(--fs-300);
}