@font-face {
    font-family: "Barlow";
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/barlow-latin-400-normal-l053MFU.woff2") format("woff2");
}

@font-face {
    font-family: "Barlow";
    font-weight: 500;
    font-display: swap;
    src: url("../fonts/barlow-latin-500-normal-VMkGyYA.woff2") format("woff2");
}

@font-face {
    font-family: "Barlow";
    font-weight: 600;
    font-display: swap;
    src: url("../fonts/barlow-latin-600-normal-fSS6XKm.woff2") format("woff2");
}

@font-face {
    font-family: "Barlow Semi Condensed";
    font-weight: 600;
    font-display: swap;
    src: url("../fonts/barlow-semi-condensed-latin-600-normal-BwiUhEJ.woff2") format("woff2");
}

@font-face {
    font-family: "Barlow Semi Condensed";
    font-weight: 700;
    font-display: swap;
    src: url("../fonts/barlow-semi-condensed-latin-700-normal-6ZktTDp.woff2") format("woff2");
}

@font-face {
    font-family: "IBM Plex Mono";
    font-weight: 400;
    font-display: swap;
    src: url("../fonts/ibm-plex-mono-latin-400-normal-78NWkmx.woff2") format("woff2");
}

/* Bootstrap's dist build emits its :root tokens outside any cascade layer, so overrides must be unlayered too */
:root {
    --ink: #1c2433;
    --ink-soft: #4d586b;
    --paper: #ffffff;
    --desk: #eef1f5;
    --rule: #cdd5e0;
    --stamp-violet: #5a3ec8;
    --stamp-green: #1f7a4d;
    --stamp-red: #b83a2e;

    --bs-body-font-family: "Barlow", system-ui, sans-serif;
    --bs-heading-font-family: "Barlow Semi Condensed", "Barlow", system-ui, sans-serif;
    --bs-font-mono: "IBM Plex Mono", ui-monospace, monospace;
    --bs-fg-body: var(--ink);
    --bs-heading-color: var(--ink);

    /* The site is pinned to light mode, so the primary roles don't need light-dark() pairs */
    --bs-primary-base: var(--stamp-violet);
    --bs-primary-bg: var(--stamp-violet);
    --bs-primary-fg: color-mix(in oklch, var(--stamp-violet) 85%, black);
    --bs-primary-fg-emphasis: color-mix(in oklch, var(--stamp-violet) 55%, black);
    --bs-primary-bg-subtle: color-mix(in oklch, var(--stamp-violet) 10%, white);
    --bs-primary-bg-muted: color-mix(in oklch, var(--stamp-violet) 20%, white);
    --bs-primary-border: color-mix(in oklch, var(--stamp-violet) 40%, white);
    --bs-primary-focus-ring: color-mix(in oklch, var(--stamp-violet) 50%, white);
    --bs-primary-contrast: var(--paper);
}

@layer custom {
    body {
        overscroll-behavior: none;
        line-height: 1.6;
    }

    h1, h2, h3 {
        letter-spacing: -0.01em;
    }

    .navbar-brand {
        font-family: var(--bs-heading-font-family);
        font-weight: 700;
        font-size: 1.375rem;
        color: var(--ink);
    }

    .desk {
        background-color: var(--desk);
    }

    .section {
        padding-block: clamp(3.5rem, 2rem + 5vw, 6rem);
    }

    .section-title {
        font-size: var(--bs-font-size-3xl);
        font-weight: 700;
        line-height: 1.1;
    }

    .section-intro {
        max-width: 36rem;
        color: var(--ink-soft);
    }

    /* Hero */

    #pruefen {
        padding-block: clamp(3rem, 1.5rem + 5vw, 5.5rem);
        scroll-margin-top: 1rem;
    }

    .hero-title {
        font-size: var(--bs-font-size-5xl);
        font-weight: 700;
        line-height: 1;
        letter-spacing: -0.02em;
        margin-bottom: 1.5rem;
    }

    .hero-intro {
        font-size: var(--bs-font-size-lg);
        max-width: 32rem;
        color: var(--ink-soft);
    }

    .hero-facts {
        list-style: none;
        padding: 0;
        margin: 1.5rem 0 0;
        display: grid;
        gap: 0.5rem;
        font-weight: 500;
    }

    .hero-facts .bi {
        color: var(--stamp-green);
        margin-inline-end: 0.5rem;
    }

    /* Invoice sheets: the PDF on top, its embedded XML peeking out underneath */

    .sheet-stack {
        position: relative;
        padding: 7.1rem 0 0 1.5rem;
    }

    .sheet {
        background-color: var(--paper);
        border: 1px solid var(--rule);
        border-radius: 2px;
        box-shadow: 0 1px 2px rgb(28 36 51 / 0.06), 0 12px 32px -12px rgb(28 36 51 / 0.18);
    }

    .sheet-xml {
        position: absolute;
        inset: 0 2rem 3rem 0;
        transform: rotate(-2deg);
        padding: 1.25rem 1.5rem;
        overflow: hidden;
    }

    .sheet-xml pre {
        margin: 0;
        font-family: var(--bs-font-mono);
        font-size: 0.75rem;
        line-height: 1.9;
        color: color-mix(in oklch, var(--stamp-violet) 70%, var(--ink));
    }

    .sheet-pdf {
        position: relative;
        min-height: 25rem;
        padding: 2.5rem;
        display: grid;
        transition: border-color 0.15s, box-shadow 0.15s;
    }

    .sheet-pdf > * {
        grid-area: 1 / 1;
    }

    .sheet-pdf.is-dragover {
        border-color: var(--stamp-violet);
        box-shadow: 0 0 0 4px color-mix(in oklch, var(--stamp-violet) 25%, transparent), 0 12px 32px -12px rgb(28 36 51 / 0.18);
    }

    .sheet-idle,
    .sheet-busy {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .sheet-pdf:not([data-state="idle"]) .sheet-idle,
    .sheet-pdf:not([data-state="busy"]) .sheet-busy,
    .sheet-pdf:not([data-state="report"]) .sheet-report {
        display: none;
    }

    .sheet-ruling {
        align-self: stretch;
        display: grid;
        gap: 0.75rem;
        margin-bottom: 2.5rem;
    }

    .sheet-ruling span {
        height: 0.5rem;
        border-radius: 1px;
        background-color: var(--desk);
    }

    .sheet-ruling span:first-child {
        width: 40%;
        height: 0.875rem;
        margin-bottom: 0.5rem;
        background-color: var(--rule);
    }

    .sheet-ruling span:last-child {
        width: 65%;
    }

    .sheet-prompt {
        font-family: var(--bs-heading-font-family);
        font-size: var(--bs-font-size-2xl);
        font-weight: 600;
        margin-bottom: 0.25rem;
    }

    .sheet-pdf.is-dragover .sheet-prompt {
        color: var(--stamp-violet);
    }

    .sheet-or {
        color: var(--ink-soft);
        margin-bottom: 1rem;
    }

    @media (pointer: coarse) {
        .sheet-pdf {
            min-height: 18rem;
        }

        .sheet-prompt,
        .sheet-or {
            display: none;
        }
    }

    .sheet-idle label:has(input:focus-visible) {
        outline: var(--bs-focus-ring-width, 3px) solid var(--bs-primary-focus-ring);
        outline-offset: 2px;
    }

    .sheet-busy {
        gap: 1rem;
        color: var(--ink-soft);
    }

    .sheet-busy .spinner-border {
        color: var(--stamp-violet);
    }

    /* Report with the verdict stamp */

    .report {
        position: relative;
    }

    .report-title {
        font-size: var(--bs-font-size-2xl);
        font-weight: 700;
        margin-bottom: 1.25rem;
        padding-inline-end: 9rem;
    }

    .report-title:focus {
        outline: 0;
    }

    .report-list {
        list-style: none;
        padding: 0;
        margin: 0 0 2rem;
        border-top: 1px solid var(--rule);
    }

    .report-item {
        display: flex;
        gap: 0.75rem;
        align-items: baseline;
        padding-block: 0.75rem;
        border-bottom: 1px solid var(--rule);
        overflow-wrap: anywhere;
    }

    .report-success .bi { color: var(--stamp-green); }
    .report-danger .bi { color: var(--stamp-red); }
    .report-info .bi { color: var(--ink-soft); }

    .report-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .stamp {
        --stamp-color: var(--stamp-green);

        position: absolute;
        top: -0.5rem;
        right: -0.5rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0.375rem 0.875rem 0.25rem;
        color: var(--stamp-color);
        border: 3px solid currentColor;
        border-radius: 6px;
        outline: 1px solid currentColor;
        outline-offset: 3px;
        transform: rotate(-9deg);
        mix-blend-mode: multiply;
        opacity: 0.88;
        font-family: var(--bs-heading-font-family);
        text-transform: uppercase;
        line-height: 1;
        animation: stamp-land 0.32s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
    }

    .stamp-fail {
        --stamp-color: var(--stamp-red);
    }

    .stamp-word {
        font-size: 1.5rem;
        font-weight: 700;
        letter-spacing: 0.06em;
    }

    .stamp-date {
        font-size: 0.8125rem;
        font-weight: 600;
        letter-spacing: 0.12em;
        margin-top: 0.25rem;
    }

    @keyframes stamp-land {
        from {
            opacity: 0;
            transform: rotate(-9deg) scale(1.8);
        }
    }

    @media (prefers-reduced-motion: reduce) {
        .stamp {
            animation: none;
        }
    }

    /* Deadlines */

    .timeline {
        list-style: none;
        padding: 0;
        margin: 0 0 2rem;
        border-inline-start: 2px solid var(--rule);
    }

    .timeline-step,
    .timeline-now {
        position: relative;
        padding-inline-start: 2rem;
    }

    .timeline-step {
        padding-bottom: 2rem;
    }

    .timeline-step::before {
        content: "";
        position: absolute;
        top: 0.45rem;
        left: -7px;
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background-color: var(--paper);
        border: 2px solid var(--ink);
    }

    .timeline-step.is-past::before {
        background-color: var(--ink);
    }

    .timeline-step time {
        font-family: var(--bs-heading-font-family);
        font-weight: 700;
        font-size: var(--bs-font-size-lg);
    }

    .timeline-step h3 {
        font-size: var(--bs-font-size-lg);
        font-family: var(--bs-body-font-family);
        font-weight: 600;
        margin-block: 0.125rem 0.375rem;
    }

    .timeline-step p {
        max-width: 38rem;
        color: var(--ink-soft);
        margin: 0;
    }

    .timeline-step.is-past p,
    .timeline-step.is-past h3 {
        color: var(--ink-soft);
    }

    .timeline-now {
        margin: -0.75rem 0 1.25rem;
        font-weight: 600;
        color: var(--stamp-violet);
    }

    .timeline-now::before {
        content: "";
        position: absolute;
        top: 50%;
        left: -2px;
        width: 1.5rem;
        border-top: 2px solid var(--stamp-violet);
    }

    .fine-print {
        font-size: var(--bs-font-size-sm);
        color: var(--ink-soft);
        max-width: 42rem;
        margin: 0;
    }

    /* Plans */

    .plans {
        display: grid;
        gap: 1.5rem;
    }

    @media (width >= 768px) {
        .plans {
            grid-template-columns: 1fr 1fr;
        }
    }

    .plan {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        background-color: var(--paper);
        border: 1px solid var(--rule);
        border-radius: 2px;
    }

    .plan-upcoming {
        border-style: dashed;
        border-color: color-mix(in oklch, var(--stamp-violet) 45%, var(--rule));
    }

    .plan-head {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        align-self: stretch;
    }

    .plan-head h3 {
        font-size: var(--bs-font-size-2xl);
        font-weight: 700;
        margin: 0;
    }

    .plan-price {
        font-family: var(--bs-heading-font-family);
        font-size: var(--bs-font-size-3xl);
        font-weight: 600;
        margin: 0;
    }

    .plan-note {
        color: var(--stamp-violet);
        font-weight: 600;
        margin: 0.25rem 0 0;
    }

    .plan-list {
        list-style: none;
        padding: 0;
        margin: 1.25rem 0 2rem;
        flex-grow: 1;
        align-self: stretch;
    }

    .plan-list li {
        padding-block: 0.5rem;
        border-bottom: 1px solid var(--desk);
    }

    .article {
        max-width: 40rem;
    }

    .article h2 {
        margin-top: 2.5rem;
    }

    .dialog-title {
        font-size: var(--bs-font-size-xl);
        font-weight: 700;
    }

    footer a {
        color: inherit;
    }

    /* Bootstrap 6 keeps closed dialogs rendered (visibility: hidden) for the open transition,
       but leaves the UA position: absolute, so they extend the page below the footer. */
    .dialog:not([open]) {
        position: fixed;
    }
}