:root {
    --header-height: 68px;
    --footer-height: 68px;
    --content-max-width: 640px;
    --ease-fast: 0.2s ease;
    --ease-press: 0.1s ease;
    --icon-size: 1.5rem;
}

:root[data-theme="dark"] {
    --bg: #0b0b0f;
    --surface: #252534;
    --muted: #383859;
    --text: #f5f6fa;
    --input-text: grey;
    --accent: #5b8cff;
    --ring: #3a5bd8;

    --btn-fg: var(--text);
    --btn-bg-hover: color-mix(in oklab, var(--text) 10%, transparent);
}

:root[data-theme="light"] {
    --bg: #0b0b0f;
    --surface: #9d9ddd;
    --muted: #7272b7;
    --text: #0a0a0a;
    --input-text: #0a0a0a;
    --accent: #565eff;
    --ring: #121d43;

    --btn-fg: var(--text);
    --btn-bg-hover: color-mix(in oklab, var(--text) 12%, transparent);
}

* {
    box-sizing: border-box;
}

input,
textarea,
button,
label,
select,
option {
    margin: 0;
    padding: 0;
    border: none;
    box-shadow: none;
    outline: none;
}

html,
body,
#app {
    height: 100%;
}

header {
    width: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
}

body {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: stretch;
}

form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 220px;
}

section {
    place-items: center;
    width: 100%;
    max-width: 350px;
}

.center {
    align-self: center;
}

input,
option {
    padding: 0.25rem;
}

select {
    padding-top: 0.2rem;
    padding-bottom: 0.2rem;
}

input::placeholder {
    font-style: italic;
    color: color-mix(in oklab, var(--input-text) 70%, grey);
}

select:disabled {
    background-color: var(--muted);
    font-style: italic;
    opacity: 1;
}

input:disabled,
select:disabled {
    background-color: var(--muted);
    color: color-mix(in oklab, var(--input-text) 70%, grey);
    font-style: italic;
    opacity: 1;
}

.submit-btn {
    padding: 0.25rem;
    outline: var(--ring);
    background: var(--accent);
}

h2 {
    position: absolute;
    margin-top: 0;
    margin-bottom: auto;
    transform: translateY(-5rem);
}

.calories {
    position: absolute;
    margin-bottom: 0;
    margin-top: auto;
    transform: translateY(3rem);
}

.landing-buttons {
    display: flex;
    width: 100%;
    justify-content: space-around;
}

.app-shell {
    width: 100%;
    max-width: var(--content-max-width);
    height: 100%;
    display: grid;
    grid-template-rows: var(--header-height) 1fr var(--footer-height);
    background: var(--surface);
    padding-bottom: env(safe-area-inset-bottom);
}

.top,
.bottom {
    display: flex;
    align-items: center;
    background: var(--muted);
    border: 0;
    width: 100%;
}

.top {
    justify-content: space-between;
    padding-inline: 0.5rem;
}

.bottom {
    justify-content: space-evenly;
}

.content {
    display: flex;
    justify-content: center;
    align-items: start;
    overflow: auto;
    padding: 1rem;
}

.content-view {
    display: grid;
    grid-template-rows: auto 1fr;
    row-gap: 1rem;
    width: 100%;
    max-width: var(--content-max-width);
}

.row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    align-items: center;
    gap: 0.75rem;
}

.row>[data-field="label"] {
    opacity: 0.9;
}

.row>[data-field="control"] {
    width: 100%;
    min-height: 2.25rem;
    padding: 0.5rem 0.75rem;
    color: inherit;
    background: transparent;
    border: 1px solid color-mix(in oklab, var(--text) 22%, transparent);
    border-radius: 0.5rem;
    outline: none;
}

.row>[data-field="control"]:focus-visible {
    border-color: var(--ring);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--ring) 35%, transparent);
}

.btn {
    all: unset;
    cursor: pointer;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
    padding: 0.5rem 0.75rem;
    min-width: 3rem;
    margin: 0.25rem;
    font: inherit;
    color: var(--btn-fg);
    border-radius: 0.5rem;
    transition: background-color var(--ease-fast), transform var(--ease-press);
}

.btn:hover {
    background-color: var(--btn-bg-hover);
}

.btn:active {
    transform: scale(0.97);
}

.btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn .btn__label {
    font-size: 0.825rem;
    line-height: 1.1;
    font-weight: 600;
}

.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 1rem;
    width: 300px;
    height: 300px;
    margin: auto;
}

.dashboard.landing {
    grid-template-rows: 1fr;
    height: 150px;
}

.dashboard .btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}


#btn-go-signup>.btn__icon {
    transform: translateX(3px);
}

.btn.xs .btn__icon.xs {
    inline-size: var(--icon-size);
    block-size: var(--icon-size);
}

.btn .btn__icon {
    inline-size: calc(var(--icon-size)*1.5);
    block-size: calc(var(--icon-size)*1.5);
    display: inline-block;
    color: currentColor;
}

.btn .btn__icon>svg {
    width: 100%;
    height: 100%;
    display: block;
    fill: currentColor;
}

.btn .btn__icon.mask {
    background-color: currentColor;
    mask-image: var(--icon-src);
    mask-repeat: no-repeat;
    mask-position: center;
    mask-size: 100% 100%;
    -webkit-mask-image: var(--icon-src);
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    -webkit-mask-size: 100% 100%;
}

[hidden] {
    display: none !important;
}

footer.bottom[aria-hidden="true"] {
    min-height: var(--footer-height);
}

footer.bottom[aria-hidden="true"] .btn {
    visibility: hidden;
    pointer-events: none;
}


#btn-theme {
    margin-right: 0;
    margin-left: auto;
}


@media (prefers-reduced-motion: reduce) {
    .btn {
        transition: none;
    }
}

@media (max-width: 350px) {
    .dashboard {
        display: flex;
        flex-direction: column;
        width: 100%;
        height: auto;
    }

    .dashboard .btn {
        flex: 1 1 auto;
        padding: 1rem;
    }
}