/*
 * Aus dem smartlearn-Design-System abgeleitet — nur die Werte, die dieses Hilfsmittel braucht.
 * Die Farben sind bewusst als Hex hinterlegt und nicht als oklch(), damit Mailclients und
 * aeltere Browser denselben Wert sehen wie die Web-Oberflaeche.
 */
:root {
    --sml-color-primary: #096dd9;
    --sml-color-primary-strong: #0554aa;
    --sml-color-primary-subtle: #e7f1fc;

    --sml-color-surface: #ffffff;
    --sml-color-background: #eff1f2;
    --sml-color-border: #b0b7bd;
    --sml-color-border-subtle: #dfe3e6;

    --sml-color-text: #1f2a33;
    --sml-color-text-muted: #5c6670;

    --sml-color-success: #007f68;
    --sml-color-danger: #a3202a;

    --sml-font-family-sans:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
        'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';

    --sml-font-size-12: 0.75rem;
    --sml-font-size-14: 0.875rem;
    --sml-font-size-16: 1rem;
    --sml-font-size-20: 1.25rem;
    --sml-font-size-28: 1.75rem;
    --sml-font-weight-semi-bold: 600;

    --sml-spacing-4: 0.25rem;
    --sml-spacing-8: 0.5rem;
    --sml-spacing-12: 0.75rem;
    --sml-spacing-16: 1rem;
    --sml-spacing-24: 1.5rem;
    --sml-spacing-32: 2rem;
    --sml-spacing-48: 3rem;

    --sml-border-radius-sm: 4px;
    --sml-border-radius-md: 8px;

    --sml-box-shadow-md: 0 0 4px rgb(0 0 0 / 4%), 0 4px 8px rgb(0 0 0 / 6%);

    --sml-focus-outline: 2px solid var(--sml-color-primary);
    --sml-focus-outline-offset: 2px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--sml-font-family-sans);
    font-size: var(--sml-font-size-16);
    line-height: 1.5;
    color: var(--sml-color-text);
    background: var(--sml-color-background);
}

:focus-visible {
    outline: var(--sml-focus-outline);
    outline-offset: var(--sml-focus-outline-offset);
}

a {
    color: var(--sml-color-primary-strong);
}

/* Optisch versteckt, aber im Accessibility-Tree. Die Ausnahme laesst fokussierbare Inhalte
   darin wieder sichtbar werden; :where() traegt dabei keine Spezifitaet bei. */
.visually-hidden:where(:not(:focus-within, :active)) {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.page {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: var(--sml-spacing-24);
    min-height: 100dvh;
    max-width: 44rem;
    margin: 0 auto;
    padding: var(--sml-spacing-32) var(--sml-spacing-16);
}

.masthead {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sml-spacing-8) var(--sml-spacing-16);
    color: var(--sml-color-primary);
}

/* Das Wortbild bringt nur eine viewBox mit, darum kommt die Hoehe von hier. */
.masthead__logo svg {
    display: block;
    width: auto;
    height: 2rem;
}

.masthead__title {
    margin: 0;
    padding-left: var(--sml-spacing-16);
    border-left: 1px solid var(--sml-color-border);
    font-size: var(--sml-font-size-16);
    font-weight: var(--sml-font-weight-semi-bold);
    color: var(--sml-color-text-muted);
}

.badge {
    padding: 0 var(--sml-spacing-8);
    border-radius: var(--sml-border-radius-sm);
    background: var(--sml-color-primary-subtle);
    font-size: var(--sml-font-size-12);
    color: var(--sml-color-primary-strong);
}

.card {
    padding: var(--sml-spacing-32) var(--sml-spacing-24);
    background: var(--sml-color-surface);
    border-radius: var(--sml-border-radius-md);
    box-shadow: var(--sml-box-shadow-md);

    @media (width >= 40rem) {
        padding: var(--sml-spacing-48);
    }
}

.notification {
    margin: 0 0 var(--sml-spacing-24);
    padding: var(--sml-spacing-12) var(--sml-spacing-16);
    border-left: 4px solid var(--sml-color-primary);
    border-radius: var(--sml-border-radius-sm);
    background: var(--sml-color-primary-subtle);
}

.card__heading {
    margin: 0 0 var(--sml-spacing-8);
    font-size: var(--sml-font-size-28);
    line-height: 1.2;
}

.card__intro {
    margin: 0 0 var(--sml-spacing-24);
    color: var(--sml-color-text-muted);
}

/* Schrittanzeige Upload -> Bestaetigung -> Konvertierung -> Download. */
.steps {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sml-spacing-8) var(--sml-spacing-16);
    margin: 0 0 var(--sml-spacing-32);
    padding: 0;
    list-style: none;
    font-size: var(--sml-font-size-14);
}

.steps__item {
    display: flex;
    align-items: center;
    gap: var(--sml-spacing-8);
    color: var(--sml-color-text-muted);
}

.steps__item--current {
    color: var(--sml-color-primary-strong);
    font-weight: var(--sml-font-weight-semi-bold);
}

.steps__item--done {
    color: var(--sml-color-success);
}

.steps__marker {
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    border: 1px solid currentcolor;
    border-radius: 50%;
    font-size: var(--sml-font-size-12);
    font-variant-numeric: tabular-nums;

    .steps__item--current & {
        background: var(--sml-color-primary-subtle);
    }
}

.field {
    margin-bottom: var(--sml-spacing-24);

    & label {
        display: block;
        margin-bottom: var(--sml-spacing-4);
        font-weight: var(--sml-font-weight-semi-bold);
    }

    & input,
    & select {
        width: 100%;
        padding: var(--sml-spacing-12);
        border: 1px solid var(--sml-color-border);
        border-radius: var(--sml-border-radius-sm);
        background: var(--sml-color-surface);
        font: inherit;
        color: inherit;
    }

    & :is(input, select)[aria-invalid='true'] {
        border-color: var(--sml-color-danger);
    }
}

.field__help {
    display: block;
    margin-bottom: var(--sml-spacing-8);
    font-size: var(--sml-font-size-14);
    color: var(--sml-color-text-muted);
}

.field__errors {
    margin: var(--sml-spacing-8) 0 0;
    padding: 0;
    list-style: none;
}

.field__error {
    color: var(--sml-color-danger);
    font-size: var(--sml-font-size-14);
}

.note {
    padding: var(--sml-spacing-12) var(--sml-spacing-16);
    border-radius: var(--sml-border-radius-sm);
    background: var(--sml-color-background);
    font-size: var(--sml-font-size-14);
    color: var(--sml-color-text-muted);
}

.button {
    display: inline-block;
    margin-top: var(--sml-spacing-24);
    padding: var(--sml-spacing-12) var(--sml-spacing-24);
    border: 1px solid transparent;
    border-radius: var(--sml-border-radius-sm);
    background: var(--sml-color-primary);
    color: var(--sml-color-surface);
    font: inherit;
    font-weight: var(--sml-font-weight-semi-bold);
    text-decoration: none;
    cursor: pointer;

    &:hover {
        background: var(--sml-color-primary-strong);
    }
}

.site-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--sml-spacing-8) var(--sml-spacing-16);
    font-size: var(--sml-font-size-14);
    color: var(--sml-color-text-muted);
}

.site-footer p {
    margin: 0;
}

.language-switch {
    display: flex;
    gap: var(--sml-spacing-12);
    margin: 0;
    padding: 0;
    list-style: none;
}

.language-switch__current {
    font-weight: var(--sml-font-weight-semi-bold);
    color: var(--sml-color-text);
}