/* UMF – Basis-Stylesheet (eigenentwickelt, ohne Framework). Farben als CSS-Variablen für Themes.
   Kontraste nach WCAG 2.1 AA werden automatisch geprüft (tests/Unit/Theme/ContrastTest.php). */

:root {
    --umf-bg: #f6f7f9;
    --umf-surface: #ffffff;
    --umf-text: #1f2933;
    --umf-muted: #52606d;
    --umf-border: #d5dae1;
    --umf-primary: #1a5fd0;
    --umf-primary-text: #ffffff;
    --umf-accent: #1a5fd0;
    --umf-ok: #127a3a;
    --umf-ok-bg: #ecf8f0;
    --umf-warn: #8a4f00;
    --umf-error: #b42318;
    --umf-error-bg: #fef3f2;
    --umf-radius: 10px;
    --umf-width: 72rem;
    --umf-font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --umf-bg: #111418;
        --umf-surface: #1b2027;
        --umf-text: #e4e7eb;
        --umf-muted: #a3adb8;
        --umf-border: #343c47;
        --umf-primary: #6ea2ff;
        --umf-primary-text: #0b1220;
        --umf-accent: #6ea2ff;
        --umf-ok: #4ade80;
        --umf-ok-bg: #12261a;
        --umf-warn: #fbbf24;
        --umf-error: #f97066;
        --umf-error-bg: #2b1614;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ------------------------------------------------------------------ Grundlagen */

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

body {
    margin: 0;
    font-family: var(--umf-font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--umf-text);
    background: var(--umf-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--umf-primary); text-underline-offset: .15em; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.25; }
:focus-visible { outline: 3px solid var(--umf-primary); outline-offset: 2px; }
main:focus { outline: none; }

.umf-container { width: 100%; max-width: var(--umf-width); margin: 0 auto; padding: 0 1rem; }
.umf-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Sprunglink: erst bei Tastaturfokus sichtbar */
.umf-skip {
    position: absolute; left: 1rem; top: -4rem; z-index: 10;
    background: var(--umf-primary); color: var(--umf-primary-text);
    padding: .5rem 1rem; border-radius: var(--umf-radius); font-weight: 600;
}
.umf-skip:focus { top: .5rem; }

/* ------------------------------------------------------------------ Kopf, Fuß */

.umf-header { background: var(--umf-surface); border-bottom: 1px solid var(--umf-border); }
.umf-header__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem 1rem; min-height: 3.75rem; padding-top: .4rem; padding-bottom: .4rem; }
.umf-brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--umf-text); }
.umf-brand img { display: block; max-height: 2.5rem; width: auto; }

.umf-nav { display: flex; align-items: center; flex-wrap: wrap; gap: .25rem 1rem; }
.umf-nav a { font-weight: 600; text-decoration: none; }
.umf-nav a:not(.umf-button):hover { text-decoration: underline; }
.umf-nav__form { margin: 0; }
.umf-linkbutton { background: none; border: 0; padding: 0; font: inherit; font-weight: 600; color: var(--umf-primary); cursor: pointer; }
.umf-linkbutton:hover { text-decoration: underline; }

.umf-main { flex: 1; padding-top: 2rem; padding-bottom: 3rem; }

.umf-footer { color: var(--umf-muted); font-size: .9rem; border-top: 1px solid var(--umf-border); background: var(--umf-surface); padding: 1.25rem 0; }
.umf-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1.5rem; }
.umf-footer__nav { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; }
.umf-footer__powered { font-size: .875em; opacity: .8; }
.umf-footer a { color: var(--umf-muted); }

/* Unternavigation (Kontobereich) */
.umf-subnav { display: flex; flex-wrap: wrap; gap: .25rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--umf-border); }
.umf-subnav a { padding: .5rem .9rem; text-decoration: none; font-weight: 600; color: var(--umf-muted); border-bottom: 3px solid transparent; margin-bottom: -1px; }
.umf-subnav a:hover { color: var(--umf-text); }
.umf-subnav a[aria-current=page] { color: var(--umf-text); border-bottom-color: var(--umf-primary); }

/* ------------------------------------------------------------------ Startseite */

.umf-hero { padding: 2rem 0 2.5rem; }
.umf-hero h1 { margin: 0 0 .5rem; font-size: clamp(1.75rem, 5vw, 2.75rem); }
.umf-hero__lead { margin: 0 0 1.5rem; font-size: 1.15rem; color: var(--umf-muted); max-width: 40rem; }
.umf-hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 0; }

.umf-steps { list-style: none; padding: 0; margin: 0 0 2rem; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); counter-reset: step; }
.umf-steps li { counter-increment: step; }
.umf-steps h3 { margin: 0 0 .25rem; font-size: 1.1rem; }
.umf-steps h3::before { content: counter(step) ". "; color: var(--umf-primary); }
.umf-steps p { margin: 0; color: var(--umf-muted); }
.umf-trust p { margin-bottom: 0; }

/* ------------------------------------------------------------------ Inhalte */

.umf-prose { max-width: 48rem; }
.umf-prose h1 { margin-top: 0; }
.umf-prose h2 { font-size: 1.25rem; margin-top: 1.75rem; }
.umf-prose h3 { font-size: 1.1rem; }
.umf-prose blockquote { margin: 0 0 1rem; padding: .75rem 1rem; border-left: 4px solid var(--umf-warn); background: var(--umf-bg); border-radius: 0 var(--umf-radius) var(--umf-radius) 0; }
.umf-prose blockquote p { margin: 0; }
.umf-prose hr { border: 0; border-top: 1px solid var(--umf-border); margin: 1.5rem 0; }

.umf-card { background: var(--umf-surface); border: 1px solid var(--umf-border); border-radius: var(--umf-radius); padding: 1.5rem; }
.umf-card h2 { margin-top: 0; font-size: 1.15rem; }
.umf-card--danger { border-color: var(--umf-error); }
.umf-stack { display: grid; gap: 1rem; }
.umf-list { margin: 0; padding-left: 1.2rem; }

.umf-facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: .75rem; margin: 0; }
.umf-facts > div { background: var(--umf-surface); border: 1px solid var(--umf-border); border-radius: var(--umf-radius); padding: .9rem 1rem; }
.umf-facts dt { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--umf-muted); }
.umf-facts dd { margin: .2rem 0 0; font-weight: 600; overflow-wrap: anywhere; }

.umf-ok { color: var(--umf-ok); }
.umf-warn { color: var(--umf-warn); }
.umf-hint, .umf-field__hint { color: var(--umf-muted); font-size: .9rem; margin: .3rem 0 0; }

.umf-alert { border-radius: var(--umf-radius); padding: .75rem 1rem; margin-bottom: 1rem; border: 1px solid; }
.umf-alert--error { background: var(--umf-error-bg); color: var(--umf-error); border-color: var(--umf-error); }
.umf-alert--success { background: var(--umf-ok-bg); color: var(--umf-ok); border-color: var(--umf-ok); }

/* Vertikaler Rhythmus: aufeinanderfolgende Blöcke im Fluss halten 1rem Abstand (Außenabstände unten und oben
   fallen im Blockfluss zusammen, es gibt keine Doppelabstände). In Rastern und Stapeln regelt `gap` den Abstand. */
:is(.umf-card, .umf-facts, .umf-table-wrap, .umf-stack, .umf-grid, .umf-alert, .umf-hint, .umf-fieldset) + :is(.umf-card, .umf-facts, .umf-table-wrap, .umf-stack, .umf-grid, .umf-alert, .umf-fieldset) { margin-top: 1rem; }
:is(.umf-main, .umf-admin__main) > :is(.umf-card, .umf-facts, .umf-table-wrap, .umf-stack, .umf-grid, .umf-alert) + :is(.umf-hint, form, table, h2, h3, p, ul, ol),
:is(.umf-main, .umf-admin__main) > .umf-hint + :is(form, table, h2, h3, p, ul, ol) { margin-top: 1rem; }
:is(.umf-grid, .umf-stack, .umf-facts) > :is(.umf-card, .umf-facts, .umf-table-wrap, .umf-stack, .umf-grid, .umf-alert, .umf-fieldset, .umf-hint) + :is(.umf-card, .umf-facts, .umf-table-wrap, .umf-stack, .umf-grid, .umf-alert, .umf-fieldset) { margin-top: 0; }

.umf-error { text-align: center; padding: 3rem 0; }
.umf-error__code { font-size: 4rem; font-weight: 800; margin: 0; color: var(--umf-muted); line-height: 1; }
.umf-error__text { color: var(--umf-muted); max-width: 32rem; margin: 0 auto 1.5rem; }

/* ------------------------------------------------------------------ Schaltflächen */

.umf-button {
    display: inline-block;
    background: var(--umf-primary);
    color: var(--umf-primary-text);
    padding: .6rem 1.15rem;
    min-height: 2.75rem; /* Zielgröße für Touch */
    border: 2px solid var(--umf-primary);
    border-radius: var(--umf-radius);
    text-decoration: none;
    font: inherit;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
}
.umf-button:hover { filter: brightness(1.1); }
.umf-button--small { padding: .3rem .8rem; min-height: 2.25rem; }
.umf-button--secondary { background: transparent; color: var(--umf-primary); }
.umf-button--danger { background: var(--umf-error); border-color: var(--umf-error); color: var(--umf-surface); }

/* ------------------------------------------------------------------ Formulare */

.umf-auth { max-width: 28rem; margin: 0 auto; }
.umf-auth h1 { margin-top: 0; }
.umf-auth__links { margin-bottom: 0; color: var(--umf-muted); }
/* Einheitliche Grundstile für alle Eingabeelemente (Admin, Mitgliederbereich, Installer). Niedrige Spezifität (:where),
   damit Themes und Plugins sie bei Bedarf überschreiben können. Checkbox, Radio, Bereich, Farbe, Datei und Knöpfe bleiben nativ. */
:where(input:not([type=checkbox], [type=radio], [type=range], [type=color], [type=file], [type=button], [type=submit], [type=reset], [type=image], [type=hidden]), select, textarea) {
    box-sizing: border-box; min-height: 2.5rem; max-width: 100%; padding: .5rem .7rem; font: inherit; line-height: 1.4;
    color: var(--umf-text); background-color: var(--umf-surface);
    border: 1px solid var(--umf-muted); border-radius: calc(var(--umf-radius) - 4px);
}
:where(textarea) { min-height: 6rem; resize: vertical; }
:where(input, select, textarea)::placeholder { color: var(--umf-muted); opacity: 1; }
:where(input, select, textarea):disabled { opacity: .6; cursor: not-allowed; background-color: var(--umf-bg); }
:where(input, select, textarea)[aria-invalid=true] { border: 2px solid var(--umf-error); }
:where(input[type=checkbox], input[type=radio], input[type=range]) { accent-color: var(--umf-primary); }
/* Auswahllisten: eigener Pfeil aus Farbverläufen (kein data:-URI, damit die CSP unverändert bleibt) */
:where(select:not([multiple], [size])), :where(select[size="1"]) {
    appearance: none; -webkit-appearance: none; padding-right: 2.2rem; cursor: pointer;
    background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
    background-position: calc(100% - 1.15rem) 50%, calc(100% - .8rem) 50%;
    background-size: .35rem .35rem, .35rem .35rem; background-repeat: no-repeat;
}
:where(select[multiple], select[size]:not([size="1"])) option { padding: .2rem .4rem; }
/* kompakte Felder in Filterleisten, Tabellen und Inline-Formularen */
:where(.umf-filter, .umf-inline, .umf-actions-inline, td, th) :where(input:not([type=checkbox], [type=radio], [type=range], [type=color], [type=file], [type=hidden]), select) { min-height: 2.25rem; padding-top: .3rem; padding-bottom: .3rem; }

.umf-field { margin-bottom: 1rem; }
.umf-field label { display: block; font-weight: 600; margin-bottom: .3rem; }
.umf-field :where(input:not([type=checkbox], [type=radio], [type=range], [type=color], [type=file], [type=hidden]), select, textarea) { width: 100%; }
.umf-field textarea { min-height: 8rem; }
.umf-field input[aria-invalid=true], .umf-field select[aria-invalid=true], .umf-field textarea[aria-invalid=true] { border: 2px solid var(--umf-error); }
.umf-field--check label { font-weight: 400; display: flex; gap: .5rem; align-items: flex-start; }
.umf-field--check input { margin-top: .35rem; width: 1.1rem; height: 1.1rem; }
.umf-field__error { color: var(--umf-error); margin: .3rem 0 0; font-size: .9rem; font-weight: 600; }

/* Bot-Schutz: Honeypot-Feld für Menschen unsichtbar (nicht display:none – manche Bots prüfen das) */
.umf-hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.umf-captcha { margin: 1rem 0; border: 1px solid var(--umf-border); border-radius: var(--umf-radius); padding: .75rem 1rem; }
.umf-captcha legend { font-weight: 600; padding: 0 .25rem; }

/* Icon-Captcha: Radio-Felder liegen über den Symbolen – ohne JavaScript, per Tastatur bedienbar */
.umf-iconcaptcha__board { position: relative; max-width: 100%; margin: .5rem 0; }
.umf-iconcaptcha__board img { display: block; width: 100%; height: auto; border-radius: var(--umf-radius); border: 1px solid var(--umf-border); }
.umf-iconcaptcha__cells { position: absolute; inset: 0; display: flex; }
.umf-iconcaptcha__cell { flex: 1; position: relative; cursor: pointer; }
.umf-iconcaptcha__cell input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.umf-iconcaptcha__mark { position: absolute; inset: 3px; border-radius: 8px; border: 3px solid transparent; }
.umf-iconcaptcha__cell:hover .umf-iconcaptcha__mark { border-color: var(--umf-border); }
.umf-iconcaptcha__cell input:focus-visible + .umf-iconcaptcha__mark { border-color: var(--umf-primary); border-style: dashed; }
.umf-iconcaptcha__cell input:checked + .umf-iconcaptcha__mark { border-color: var(--umf-primary); background: color-mix(in srgb, var(--umf-primary) 12%, transparent); }
.umf-iconcaptcha__alt { margin: 0; font-size: .875rem; }

/* Zwei-Faktor */
.umf-qr svg { display: block; max-width: 100%; height: auto; border-radius: 6px; }
.umf-secret { font-size: 1.1rem; letter-spacing: .08em; word-break: break-all; }
.umf-codes { display: grid; grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr)); gap: .4rem; padding: 0; list-style: none; }
.umf-codes code { font-size: 1.05rem; letter-spacing: .05em; }

/* ------------------------------------------------------------------ Druck */

@media print {
    .umf-header, .umf-footer, .umf-subnav, .umf-skip, .umf-button { display: none !important; }
    body { background: #fff; color: #000; }
    .umf-card { border: 0; padding: 0; }
}

/* ------------------------------------------------------------------ Installer */

.umf-install { max-width: 48rem; }
.umf-install h1 { margin-top: 0; }
.umf-install-steps { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem .5rem; padding: 0; margin: 0 0 1rem; counter-reset: step; font-size: .9rem; }
.umf-install-steps li { counter-increment: step; color: var(--umf-muted); }
.umf-install-steps li::before { content: counter(step) ". "; }
.umf-install-steps li + li::before { content: "› " counter(step) ". "; }
.umf-install-steps li[aria-current=step] { color: var(--umf-text); font-weight: 700; }
.umf-install-back { margin-top: 1rem; }
.umf-error-text { color: var(--umf-error); font-weight: 600; }
.umf-install progress { width: 100%; height: 1.25rem; }
.umf-dl { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; margin: 0 0 1rem; }
.umf-dl dt { color: var(--umf-muted); }
.umf-dl dd { margin: 0; overflow-wrap: anywhere; }
.umf-num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.umf-balance__main dd { font-size: 1.5rem; color: var(--umf-primary); }
.umf-areas { list-style: none; padding: 0; margin: 0 0 .5rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.umf-areas a { font-weight: 600; }
.umf-bookings td:first-child { white-space: nowrap; }

/* Status-Kennzeichen (Mitgliederbereich und Admin) */
.umf-badge { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .8rem; font-weight: 600; border: 1px solid var(--umf-border); }
.umf-badge--active { color: var(--umf-ok); border-color: var(--umf-ok); }
.umf-badge--locked { color: var(--umf-error); border-color: var(--umf-error); }
.umf-badge--pending { color: var(--umf-warn); border-color: var(--umf-warn); }
.umf-inline-form { display: inline; margin: 0; }
.umf-adlist h2 { font-size: 1.1rem; margin: 0 0 .25rem; }
.umf-adlist__meta { color: var(--umf-muted); }
.umf-inbox__unread td:first-child a { font-weight: 700; }
.umf-adslot { text-align: center; margin: 0 0 1.5rem; }
.umf-adslot img, .umf-banners img { max-width: 100%; height: auto; border-radius: 4px; }
.umf-banners { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: 1.25rem; justify-items: center; text-align: center; }
.umf-banners li { display: grid; gap: .35rem; justify-items: center; }
.umf-copy { width: 100%; font-family: ui-monospace, Consolas, monospace; padding: .5rem; border: 1px solid var(--umf-muted); border-radius: calc(var(--umf-radius) - 4px); background: var(--umf-surface); color: var(--umf-text); }
.umf-ranking { margin: 0; padding-left: 1.5rem; }
.umf-ranking__self { font-weight: 700; }
.umf-pagination { display: flex; gap: 1rem; justify-content: center; align-items: center; margin: 1.5rem 0; }
.umf-faq { display: grid; gap: .75rem; }
.umf-faq summary { cursor: pointer; font-weight: 600; }
.umf-faq details[open] summary { margin-bottom: .5rem; }
.umf-online { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
.umf-news-teaser { display: grid; gap: .75rem; }
.umf-warn { color: var(--umf-warn); font-weight: 600; }
.umf-ok { color: var(--umf-ok); font-weight: 600; }
.umf-lines { list-style: none; padding: 0; margin: 0; }
.umf-thread__staff { border-left: 4px solid var(--umf-primary, #1f6feb); }
.umf-promo { margin: 1rem 0; display: grid; gap: .5rem; }
.umf-promo img { max-width: 100%; height: auto; }
.umf-alert--warn { background: var(--umf-surface); color: var(--umf-text); border-color: var(--umf-warn); border-left-width: 4px; }
/* Demo-Betrieb: Hinweisbanner auf allen Seiten, abgefangene Mails */
.umf-demo-banner { background: #7a4600; color: #fff; padding: .5rem 1rem; text-align: center; font-size: .9rem; line-height: 1.4; }
.umf-demo-banner a { color: #fff; text-decoration: underline; margin-left: .5rem; }
.umf-demo-banner__login { display: block; margin-top: .25rem; }
.umf-demo-banner code { background: rgba(0, 0, 0, .25); color: #fff; padding: 0 .35em; border-radius: 4px; }
.umf-demo-mail { white-space: pre-wrap; overflow-wrap: anywhere; padding: 1rem; border: 1px solid var(--umf-border); border-radius: var(--umf-radius); background: var(--umf-surface); }

/* Passwort-Generator (per JavaScript eingeblendet, siehe assets/js/password-generator.js) */
.umf-pwgen { margin-bottom: 1rem; }
.umf-pwgen__result { margin-top: .75rem; padding: .75rem 1rem; border: 1px solid var(--umf-border); border-radius: var(--umf-radius); background: var(--umf-surface); }
.umf-pwgen__label { display: block; font-weight: 600; margin-bottom: .3rem; }
.umf-pwgen__row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.umf-pwgen__value { flex: 1 1 14rem; min-width: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .05em; }
.umf-pwgen__status { margin: .4rem 0 0; min-height: 1.2em; color: var(--umf-muted); font-size: .9rem; }