/* ==========================================================================
   FrenchyBooks – Design-System
   Ruhig, modern, mobile first. Eine Akzentfarbe, viel Weißraum,
   abgerundete Ecken, dezente Schatten. Dark Mode nach Systemeinstellung.
   ========================================================================== */

/* ---------- 1. Design-Tokens ---------- */
:root {
    color-scheme: light dark;

    /* Flächen & Text */
    --bg: #f6f5f2;
    --surface: #ffffff;
    --surface-2: #f0efeb;
    --border: #e3e1db;
    --text: #1d1f24;
    --text-muted: #5f636b;
    --text-subtle: #767a82;

    /* Akzentfarbe („Bleu de France“) */
    --accent: #2c55b8;
    --accent-hover: #234597;
    --accent-soft: #e6ecfa;
    --accent-contrast: #ffffff;
    --focus: #2c55b8;

    /* Status */
    --ok-bg: #e2f4e8;
    --ok-text: #11632f;
    --ok-dot: #1f9d4c;
    --warn-bg: #fdefd9;
    --warn-text: #874600;
    --warn-dot: #e2860b;
    --danger-bg: #fce6e6;
    --danger-text: #a2171b;
    --danger-dot: #d93036;
    --danger: #c62a2f;
    --danger-hover: #a51f24;

    /* Form */
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(20, 22, 28, .06);
    --shadow: 0 1px 3px rgba(20, 22, 28, .06), 0 6px 18px rgba(20, 22, 28, .06);
    --shadow-lg: 0 10px 40px rgba(20, 22, 28, .16);

    /* Typografie */
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
    --fs-xs: .8125rem;
    --fs-sm: .9375rem;
    --fs-base: 1rem;
    --fs-lg: 1.1875rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 1.875rem;

    /* Abstände */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;

    --tap: 48px;               /* Mindestgröße für Touch-Ziele */
    --container: 1120px;
    --bottom-nav-h: 64px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #121317;
        --surface: #1b1d23;
        --surface-2: #23262d;
        --border: #30333b;
        --text: #eceef2;
        --text-muted: #a9aeb8;
        --text-subtle: #8d929c;

        --accent: #8eaaff;
        --accent-hover: #adc2ff;
        --accent-soft: #232c45;
        --accent-contrast: #0f1629;
        --focus: #8eaaff;

        --ok-bg: #16311f;
        --ok-text: #86e0a5;
        --ok-dot: #45c877;
        --warn-bg: #3a2711;
        --warn-text: #ffc279;
        --warn-dot: #f5a13c;
        --danger-bg: #3d1719;
        --danger-text: #ff9c9f;
        --danger-dot: #ff6b70;
        --danger: #e5484d;
        --danger-hover: #f2676b;

        --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
        --shadow: 0 1px 3px rgba(0, 0, 0, .35), 0 6px 18px rgba(0, 0, 0, .25);
        --shadow-lg: 0 10px 40px rgba(0, 0, 0, .5);
    }
}

/* ---------- 2. Basis ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-padding-top: 80px;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: var(--fs-base);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 var(--space-3); font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
p { margin: 0 0 var(--space-4); }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
    border-radius: 6px;
}

.visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0);
    white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute;
    left: var(--space-4);
    top: -100px;
    z-index: 100;
    background: var(--accent);
    color: var(--accent-contrast);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--space-2); color: var(--accent-contrast); }

.icon { width: 22px; height: 22px; flex: none; }
.icon-sm { width: 18px; height: 18px; }
.icon-lg { width: 28px; height: 28px; }

.muted { color: var(--text-muted); }
.subtle { color: var(--text-subtle); font-size: var(--fs-sm); }
.small { font-size: var(--fs-sm); }
.text-center { text-align: center; }

/* ---------- 3. Layout ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.main {
    padding-top: var(--space-5);
    padding-bottom: calc(var(--bottom-nav-h) + var(--space-7) + env(safe-area-inset-bottom));
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}
.page-header h1 { margin: 0; }

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 40px;
    margin-bottom: var(--space-3);
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--fs-sm);
    font-weight: 500;
}
.back-link:hover { color: var(--text); }

.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }
.row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }

/* ---------- 4. Kopfzeile & Navigation ---------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(1.4) blur(10px);
    -webkit-backdrop-filter: saturate(1.4) blur(10px);
    border-bottom: 1px solid var(--border);
}
.topbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-serif);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -.01em;
}
.logo:hover { color: var(--text); }
.logo-mark {
    display: grid;
    place-items: center;
    width: 32px; height: 32px;
    border-radius: 9px;
    background: var(--accent);
    color: var(--accent-contrast);
}
.logo-mark svg { width: 19px; height: 19px; }
.logo em { font-style: italic; color: var(--accent); }

/* Desktop-Navigation (oben) */
.nav-desktop { display: none; }
.nav-desktop ul { display: flex; gap: var(--space-1); list-style: none; margin: 0; padding: 0; }
.nav-desktop a {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0 var(--space-3);
    border-radius: var(--radius-pill);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
}
.nav-desktop a:hover { background: var(--surface-2); color: var(--text); }
.nav-desktop a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }

/* Mobile-Navigation (unten) */
.nav-bottom {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 30;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, .04);
}
.nav-bottom ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    list-style: none;
    margin: 0 auto;
    padding: 0;
    max-width: 560px;
}
.nav-bottom a {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    height: var(--bottom-nav-h);
    color: var(--text-subtle);
    text-decoration: none;
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.1;
    text-align: center;
}
.nav-bottom a[aria-current="page"] { color: var(--accent); }
.nav-bottom a[aria-current="page"]::before {
    content: "";
    position: absolute;
    top: 0;
    width: 36px; height: 3px;
    border-radius: 0 0 3px 3px;
    background: var(--accent);
}
.nav-bottom .nav-add .icon {
    width: 34px; height: 34px;
    padding: 6px;
    border-radius: 12px;
    background: var(--accent);
    color: var(--accent-contrast);
}

.nav-count {
    display: inline-grid;
    place-items: center;
    min-width: 20px; height: 20px;
    padding: 0 6px;
    border-radius: var(--radius-pill);
    background: var(--danger);
    color: #fff;
    font-size: .6875rem;
    font-weight: 700;
}
.nav-bottom .nav-count { position: absolute; top: 6px; left: calc(50% + 6px); }

@media (min-width: 800px) {
    .nav-desktop { display: block; }
    .nav-bottom { display: none; }
    .main { padding-top: var(--space-6); padding-bottom: var(--space-7); }
}

/* ---------- 5. Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: var(--tap);
    padding: 0 var(--space-5);
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    color: var(--text);
    font: inherit;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background-color .15s, border-color .15s, color .15s, transform .08s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.btn:hover { color: var(--text); background: var(--border); }
.btn:active { transform: scale(.98); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }

.btn-primary { background: var(--accent); color: var(--accent-contrast); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-hover); color: var(--accent-contrast); }

.btn-secondary { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-secondary:hover { background: var(--surface-2); }

.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); color: #fff; }
.btn-danger-ghost { background: transparent; color: var(--danger); }
.btn-danger-ghost:hover { background: var(--danger-bg); color: var(--danger-text); }

.btn-success { background: var(--ok-dot); color: #fff; }
.btn-success:hover { background: var(--ok-text); color: #fff; }

.btn-block { display: flex; width: 100%; }
.btn-lg { min-height: 56px; font-size: var(--fs-lg); }
.btn-sm { min-height: 40px; padding: 0 var(--space-4); font-size: var(--fs-sm); }
.btn-icon { width: var(--tap); padding: 0; }

.button-group { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.button-group > form { display: contents; }

/* ---------- 6. Karten, Abschnitte, Listen ---------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-5);
}
.card-tight { padding: var(--space-4); }
.card h2 { font-size: var(--fs-lg); }

.section { margin-bottom: var(--space-7); }
.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-lg);
    margin-bottom: var(--space-3);
}
.section-title .count {
    display: inline-grid;
    place-items: center;
    min-width: 26px; height: 26px;
    padding: 0 8px;
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    color: var(--text-muted);
    font-size: var(--fs-xs);
}
.section-title .count-alert { background: var(--danger); color: #fff; }

.list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-3); }
.list-item {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: var(--space-3) var(--space-4);
    align-items: center;
    padding: var(--space-3);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.list-item.is-overdue { border-color: color-mix(in srgb, var(--danger-dot) 45%, var(--border)); }
.list-item .cover { width: 56px; border-radius: 6px; }
.list-item .cover-placeholder .ph-title { font-size: .5rem; }
.list-item .cover-placeholder .ph-author { display: none; }
.list-item-body { min-width: 0; }
.list-item-title {
    display: block;
    font-weight: 650;
    color: var(--text);
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.list-item-title:hover { color: var(--accent); }
.list-item-meta { font-size: var(--fs-sm); color: var(--text-muted); margin: 2px 0 var(--space-2); }
.list-item-actions { grid-column: 1 / -1; display: flex; gap: var(--space-2); }
.list-item-actions .btn { flex: 1; }
.list-item-actions > form { flex: 1; display: flex; }
.list-item-actions > form .btn { flex: 1; }
.request-message {
    margin: var(--space-2) 0 0;
    padding: var(--space-2) var(--space-3);
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    font-style: italic;
    color: var(--text-muted);
}

@media (min-width: 640px) {
    .list-item { grid-template-columns: 56px 1fr auto; }
    .list-item-actions { grid-column: auto; }
    .list-item-actions .btn, .list-item-actions > form { flex: none; }
}

/* ---------- 7. Badges & Chips ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    color: var(--text-muted);
    font-size: var(--fs-xs);
    font-weight: 650;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.badge::before {
    content: "";
    flex: none;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: currentColor;
}
.badge-available { background: var(--ok-bg); color: var(--ok-text); }
.badge-available::before { background: var(--ok-dot); }
.badge-lent { background: var(--warn-bg); color: var(--warn-text); }
.badge-lent::before { background: var(--warn-dot); }
.badge-overdue { background: var(--danger-bg); color: var(--danger-text); }
.badge-overdue::before { background: var(--danger-dot); }
.badge-neutral::before { display: none; }
.badge > span { overflow: hidden; text-overflow: ellipsis; }

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}
.chips-scroll {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    margin: 0 calc(-1 * var(--space-4));
    padding: 2px var(--space-4) var(--space-1);
    scroll-snap-type: x proximity;
}
.chips-scroll::-webkit-scrollbar { display: none; }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: none;
    min-height: 38px;
    padding: 0 var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface);
    color: var(--text-muted);
    font: inherit;
    font-size: var(--fs-sm);
    font-weight: 550;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    scroll-snap-align: start;
    transition: background-color .15s, border-color .15s, color .15s;
}
.chip:hover { color: var(--text); border-color: var(--text-subtle); }
.chip.is-active, .chip[aria-pressed="true"] {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-contrast);
}
.chip .icon { width: 16px; height: 16px; }

/* Checkbox-Gruppen als Chips (z. B. Genres im Formular) */
.chip-choices { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip-choice { position: relative; }
.chip-choice input {
    position: absolute;
    opacity: 0;
    inset: 0;
    width: 100%; height: 100%;
    margin: 0;
    cursor: pointer;
}
.chip-choice label { pointer-events: none; }
.chip-choice input:checked + .chip {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-contrast);
}
.chip-choice input:focus-visible + .chip { outline: 3px solid var(--focus); outline-offset: 2px; }

/* ---------- 8. Cover & Bücher-Grid ---------- */
.book-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-5) var(--space-4);
    list-style: none;
    margin: 0;
    padding: 0;
}
@media (min-width: 520px) { .book-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 800px) { .book-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1040px) { .book-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-6) var(--space-5); } }

.book-grid turbo-frame { display: contents; }

.book-tile { min-width: 0; }
.book-tile a {
    display: block;
    color: inherit;
    text-decoration: none;
    border-radius: var(--radius);
}
.book-tile a:focus-visible { outline-offset: 4px; }
.book-tile .cover { transition: transform .2s ease, box-shadow .2s ease; }
.book-tile a:hover .cover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.book-tile-title {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-top: var(--space-3);
    font-weight: 650;
    line-height: 1.3;
}
.book-tile-author {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-muted);
    font-size: var(--fs-sm);
}
.book-tile .badge { margin-top: var(--space-2); }

.cover {
    position: relative;
    width: 100%;
    aspect-ratio: 2 / 3;
    overflow: hidden;
    border-radius: 10px;
    background: var(--surface-2);
    box-shadow: var(--shadow);
}
.cover img {
    width: 100%; height: 100%;
    object-fit: cover;
}
/* Buchrücken-Effekt */
.cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0,0,0,.14) 0, rgba(255,255,255,.12) 3%, rgba(0,0,0,0) 6%);
    pointer-events: none;
}

/* Platzhalter, wenn kein Cover vorhanden ist */
.cover-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 14% 12%;
    color: #fff;
    background: var(--ph, #3b5bab);
    background-image:
        radial-gradient(120% 80% at 100% 0%, rgba(255,255,255,.18), transparent 60%),
        linear-gradient(160deg, rgba(255,255,255,.06), rgba(0,0,0,.18));
}
.cover-placeholder .ph-title {
    font-family: var(--font-serif);
    font-size: clamp(.8rem, 4.2cqi, 1.5rem);
    font-weight: 700;
    line-height: 1.2;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: anywhere;
    hyphens: auto;
}
.cover-placeholder .ph-author {
    font-size: clamp(.6rem, 2.6cqi, .95rem);
    opacity: .85;
    border-top: 1px solid rgba(255,255,255,.4);
    padding-top: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cover { container-type: inline-size; }

/* ---------- 9. Suche & Filter ---------- */
.search {
    position: relative;
    margin-bottom: var(--space-3);
}
.search .icon {
    position: absolute;
    left: 16px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-subtle);
    pointer-events: none;
}
.search input {
    width: 100%;
    min-height: 52px;
    padding: 0 var(--space-4) 0 50px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 1.0625rem;
    box-shadow: var(--shadow-sm);
}
.search input::placeholder { color: var(--text-subtle); }
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search input::-webkit-search-cancel-button { cursor: pointer; }

.filter-bar { margin-bottom: var(--space-5); }
.filter-bar .chips + .chips { margin-top: var(--space-2); }

.filter-panel {
    margin-top: var(--space-3);
    padding: var(--space-4);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.filter-panel h3 {
    margin: 0 0 var(--space-2);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-subtle);
}
.filter-panel .chips + h3 { margin-top: var(--space-4); }

.result-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    color: var(--text-muted);
    font-size: var(--fs-sm);
}
.select-inline {
    min-height: 40px;
    padding: 0 32px 0 var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 10px center;
    color: var(--text);
    font: inherit;
    font-size: var(--fs-sm);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.load-more { display: flex; justify-content: center; grid-column: 1 / -1; padding: var(--space-4) 0; }

/* ---------- 10. Formulare ---------- */
.form { display: grid; gap: var(--space-4); }
.form-row { display: grid; gap: 6px; }
.form-row > label, .form-label {
    font-weight: 600;
    font-size: var(--fs-sm);
    color: var(--text);
}
.form-row .required-mark { color: var(--danger); margin-left: 2px; }
.form-help { font-size: var(--fs-xs); color: var(--text-muted); margin: 0; }
.form-grid { display: grid; gap: var(--space-4); }
@media (min-width: 560px) { .form-grid-2 { grid-template-columns: 1fr 1fr; } }

.input,
.form input[type="text"], .form input[type="email"], .form input[type="password"],
.form input[type="number"], .form input[type="date"], .form input[type="search"],
.form input[type="tel"], .form select, .form textarea {
    width: 100%;
    min-height: var(--tap);
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 1rem; /* verhindert Zoom auf iOS */
    transition: border-color .15s, box-shadow .15s;
}
.form textarea { min-height: 110px; resize: vertical; line-height: 1.5; }
.form select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 40px;
    background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center;
}
.form input:focus, .form select:focus, .form textarea:focus, .input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-row.has-error input, .form-row.has-error select, .form-row.has-error textarea { border-color: var(--danger); }

.form-errors {
    list-style: none;
    margin: 0;
    padding: 0;
    color: var(--danger-text);
    font-size: var(--fs-sm);
    font-weight: 550;
}
.form-errors li { display: flex; gap: 6px; align-items: flex-start; }
.form-errors li::before { content: "!"; display: inline-grid; place-items: center; flex: none; width: 18px; height: 18px; margin-top: 2px; border-radius: 50%; background: var(--danger); color: #fff; font-size: 12px; font-weight: 800; }
.form-errors-global {
    padding: var(--space-3) var(--space-4);
    background: var(--danger-bg);
    border-radius: var(--radius-sm);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--tap);
    cursor: pointer;
    font-weight: 500;
}
.checkbox-row input[type="checkbox"] {
    width: 22px; height: 22px;
    margin: 0;
    accent-color: var(--accent);
    cursor: pointer;
}

.form-actions {
    display: grid;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

/* „Weitere Details“ – einklappbarer Bereich */
.disclosure {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}
.disclosure > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    min-height: 56px;
    padding: 0 var(--space-4);
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    border-radius: var(--radius);
}
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary .icon { transition: transform .2s; color: var(--text-subtle); }
.disclosure[open] > summary .icon { transform: rotate(180deg); }
.disclosure[open] > summary { border-bottom: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; }
.disclosure-body { padding: var(--space-4); display: grid; gap: var(--space-4); }
.disclosure-hint { font-weight: 400; color: var(--text-subtle); font-size: var(--fs-sm); }

/* Aufklappbare Aktion (z. B. „Verleihen“) */
.action-disclosure > summary { list-style: none; }
.action-disclosure > summary::-webkit-details-marker { display: none; }
.action-disclosure[open] > summary { display: none; }
.action-panel {
    padding: var(--space-4);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.action-panel h3 { font-size: var(--fs-base); }

/* Cover-Upload */
.cover-field {
    display: grid;
    grid-template-columns: 96px 1fr;
    gap: var(--space-4);
    align-items: center;
}
.cover-field .cover { width: 96px; }
.cover-field-actions { display: grid; gap: var(--space-2); }
.file-button { position: relative; overflow: hidden; }
.file-button input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    font-size: 0;
}
.file-button:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }

/* ---------- 11. Flash-Meldungen ---------- */
.flashes {
    position: fixed;
    z-index: 50;
    left: var(--space-4);
    right: var(--space-4);
    bottom: calc(var(--bottom-nav-h) + env(safe-area-inset-bottom) + var(--space-3));
    display: grid;
    gap: var(--space-2);
    justify-items: center;
    pointer-events: none;
}
@media (min-width: 800px) {
    .flashes { top: 76px; bottom: auto; left: auto; right: var(--space-5); justify-items: end; }
}
.flash {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    max-width: 440px;
    padding: var(--space-3) var(--space-2) var(--space-3) var(--space-4);
    background: var(--text);
    color: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-weight: 550;
    pointer-events: auto;
    animation: flash-in .25s ease-out;
}
.flash .flash-text { flex: 1; }
.flash .flash-icon { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; flex: none; }
.flash-success .flash-icon { background: var(--ok-dot); color: #fff; }
.flash-info .flash-icon { background: var(--accent); color: var(--accent-contrast); }
.flash-warning .flash-icon { background: var(--warn-dot); color: #fff; }
.flash-error .flash-icon { background: var(--danger-dot); color: #fff; }
.flash .flash-icon .icon { width: 16px; height: 16px; }
.flash button {
    display: grid;
    place-items: center;
    width: 40px; height: 40px;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: inherit;
    opacity: .7;
    cursor: pointer;
}
.flash button:hover { opacity: 1; background: rgba(127,127,127,.2); }
.flash.is-leaving { animation: flash-out .2s ease-in forwards; }
@keyframes flash-in { from { opacity: 0; transform: translateY(10px); } }
@keyframes flash-out { to { opacity: 0; transform: translateY(10px); } }

/* Inline-Hinweis */
.notice {
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    background: var(--accent-soft);
    color: var(--text);
    font-size: var(--fs-sm);
}
.notice .icon { color: var(--accent); margin-top: 1px; }
.notice p { margin: 0; }
.notice-warning { background: var(--warn-bg); }
.notice-warning .icon { color: var(--warn-text); }
.notice-danger { background: var(--danger-bg); }
.notice-danger .icon { color: var(--danger-text); }
.notice-success { background: var(--ok-bg); }
.notice-success .icon { color: var(--ok-text); }

/* ---------- 12. Leere Zustände ---------- */
.empty-state {
    display: grid;
    justify-items: center;
    gap: var(--space-3);
    padding: var(--space-7) var(--space-5);
    text-align: center;
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
}
.empty-state-icon {
    display: grid;
    place-items: center;
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
}
.empty-state-icon .icon { width: 30px; height: 30px; }
.empty-state h2, .empty-state h3 { margin: 0; font-size: var(--fs-lg); }
.empty-state p { margin: 0; max-width: 36ch; color: var(--text-muted); }
.empty-state .btn { margin-top: var(--space-2); }
.empty-state-compact { padding: var(--space-5); }

/* ---------- 13. Buch-Detailseite ---------- */
.book-detail {
    display: grid;
    gap: var(--space-5);
}
.book-detail-cover { max-width: 240px; margin: 0 auto; width: 70%; }
.book-detail-head { text-align: center; }
.book-detail-head h1 { font-family: var(--font-serif); font-size: 1.75rem; margin-bottom: var(--space-1); }
.book-detail-head .subtitle { color: var(--text-muted); font-size: var(--fs-lg); margin: 0 0 var(--space-2); }
.book-detail-head .authors { font-size: var(--fs-lg); margin: 0 0 var(--space-3); }
.book-detail-head .authors a { color: var(--text); text-decoration: none; font-weight: 550; }
.book-detail-head .authors a:hover { color: var(--accent); text-decoration: underline; }
.book-detail-head .badge { font-size: var(--fs-sm); padding: 5px 12px; }

.status-card { display: grid; gap: var(--space-3); }
.status-line { display: flex; gap: var(--space-3); align-items: center; }
.status-line .avatar { flex: none; }
.status-line p { margin: 0; }

.main-action { display: grid; gap: var(--space-3); }

.facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-3);
    margin: 0;
}
.facts div { min-width: 0; }
.facts dt { font-size: var(--fs-xs); color: var(--text-subtle); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }
.facts dd { margin: 2px 0 0; font-weight: 550; overflow-wrap: anywhere; }
.facts .wide { grid-column: 1 / -1; }

.description { white-space: pre-line; color: var(--text); }
.description.is-clamped {
    display: -webkit-box;
    -webkit-line-clamp: 6;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.private-note {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--warn-bg);
    border-radius: var(--radius);
    font-size: var(--fs-sm);
}
.private-note p { margin: 0; }
.private-note strong { display: block; font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .05em; color: var(--warn-text); }

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
    position: relative;
    padding: 0 0 var(--space-4) var(--space-5);
    border-left: 2px solid var(--border);
    margin-left: 6px;
}
.timeline li:last-child { padding-bottom: 0; border-left-color: transparent; }
.timeline li::before {
    content: "";
    position: absolute;
    left: -7px; top: 5px;
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--text-subtle);
}
.timeline li.is-active::before { background: var(--warn-dot); border-color: var(--warn-dot); }
.timeline li.is-overdue::before { background: var(--danger-dot); border-color: var(--danger-dot); }
.timeline .who { font-weight: 600; }
.timeline .when { font-size: var(--fs-sm); color: var(--text-muted); }

.owner-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; }

@media (min-width: 800px) {
    .book-detail {
        grid-template-columns: 300px 1fr;
        gap: var(--space-6) var(--space-7);
        align-items: start;
    }
    .book-detail-aside { position: sticky; top: 90px; display: grid; gap: var(--space-4); }
    .book-detail-cover { width: 100%; max-width: none; }
    .book-detail-head { text-align: left; }
    .book-detail-head h1 { font-size: 2.25rem; }
    .owner-actions { justify-content: flex-start; }
}

/* ---------- 14. Avatar ---------- */
.avatar {
    display: inline-grid;
    place-items: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--av, var(--accent));
    color: #fff;
    font-weight: 700;
    font-size: .9375rem;
    text-transform: uppercase;
}
.avatar-lg { width: 64px; height: 64px; font-size: 1.5rem; }

/* ---------- 15. Auth-Seiten ---------- */
.auth {
    max-width: 420px;
    margin: 0 auto;
    padding-top: var(--space-5);
}
.auth-hero { text-align: center; margin-bottom: var(--space-5); }
.auth-hero .logo-mark { width: 56px; height: 56px; border-radius: 16px; margin: 0 auto var(--space-4); }
.auth-hero .logo-mark svg { width: 30px; height: 30px; }
.auth-hero h1 { font-family: var(--font-serif); font-size: 2rem; margin-bottom: var(--space-2); }
.auth-hero p { color: var(--text-muted); margin: 0; }
.auth-switch { text-align: center; margin-top: var(--space-5); color: var(--text-muted); }

/* ---------- 16. Scanner ---------- */
.isbn-step { max-width: 560px; margin: 0 auto; }
.isbn-input-row { display: flex; gap: var(--space-2); }
.isbn-input-row input { flex: 1; font-size: 1.25rem !important; letter-spacing: .04em; }
.or-divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-subtle);
    font-size: var(--fs-sm);
}
.or-divider::before, .or-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

.scanner {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: flex;
    flex-direction: column;
    background: #000;
    color: #fff;
}
.scanner[hidden] { display: none; }
.scanner-video-wrap { position: relative; flex: 1; overflow: hidden; }
.scanner video { width: 100%; height: 100%; object-fit: cover; }
.scanner-frame {
    position: absolute;
    left: 50%; top: 45%;
    width: min(80vw, 380px);
    aspect-ratio: 16 / 9;
    transform: translate(-50%, -50%);
    border-radius: 18px;
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, .55);
    border: 3px solid rgba(255, 255, 255, .9);
}
.scanner-frame::after {
    content: "";
    position: absolute;
    left: 8%; right: 8%; top: 50%;
    height: 2px;
    background: #ff5a5f;
    box-shadow: 0 0 12px #ff5a5f;
    animation: scan-line 1.8s ease-in-out infinite;
}
.scanner.is-found .scanner-frame { border-color: #45c877; }
.scanner.is-found .scanner-frame::after { display: none; }
@keyframes scan-line { 0%, 100% { transform: translateY(-40px); } 50% { transform: translateY(40px); } }
.scanner-bar {
    display: grid;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-4) calc(var(--space-4) + env(safe-area-inset-bottom));
    background: #000;
    text-align: center;
}
.scanner-status { margin: 0; font-weight: 550; min-height: 1.5em; }
.scanner .btn-secondary { background: #fff; color: #111; border-color: #fff; }

/* ---------- 17. Dialog (Bestätigung beim Löschen) ---------- */
dialog.confirm-dialog {
    width: min(92vw, 420px);
    padding: var(--space-5);
    border: 0;
    border-radius: var(--radius-lg);
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-lg);
}
dialog.confirm-dialog::backdrop { background: rgba(10, 12, 16, .5); backdrop-filter: blur(2px); }
dialog.confirm-dialog h2 { font-size: var(--fs-lg); }
dialog.confirm-dialog p { color: var(--text-muted); }
dialog.confirm-dialog .button-group { justify-content: flex-end; }
@media (max-width: 480px) {
    dialog.confirm-dialog { margin: auto auto 0; width: 100%; max-width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; padding-bottom: calc(var(--space-5) + env(safe-area-inset-bottom)); }
    dialog.confirm-dialog .button-group { flex-direction: column-reverse; }
    dialog.confirm-dialog .btn { width: 100%; }
}

/* ---------- 18. Profil ---------- */
.profile-head { display: flex; gap: var(--space-4); align-items: center; margin-bottom: var(--space-5); }
.profile-head h1 { margin: 0; font-size: var(--fs-xl); }
.profile-head p { margin: 0; }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.stat {
    padding: var(--space-4) var(--space-3);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    text-decoration: none;
    color: var(--text);
}
a.stat:hover { border-color: var(--accent); color: var(--text); }
.stat strong { display: block; font-size: var(--fs-xl); line-height: 1.1; }
.stat span { font-size: var(--fs-xs); color: var(--text-muted); }
.code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    background: var(--surface-2);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: .95em;
}

/* ---------- 19. Fehlerseiten ---------- */
.error-page { max-width: 480px; margin: var(--space-7) auto; text-align: center; }
.error-page .error-code { font-family: var(--font-serif); font-size: 4rem; font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: var(--space-3); }

/* ---------- 20. Turbo-Ladebalken & Reduced Motion ---------- */
.turbo-progress-bar { height: 3px; background: var(--accent); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 21. Turbo-Frames ---------- */
turbo-frame { display: block; }
turbo-frame[aria-busy="true"] .book-grid,
turbo-frame[aria-busy="true"] .result-meta { opacity: .55; transition: opacity .2s; }
.error-page .error-code .icon { width: 64px; height: 64px; margin: 0 auto; }

/* ---------- 22. Sprachauswahl (Dropdown mit Flaggen) ---------- */
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); }

.flag {
    flex: none;
    width: 22px;
    height: 15px;
    border-radius: 3px;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .12);
}

.lang-dropdown { position: relative; }

.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0 var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: var(--fs-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background-color .15s, border-color .15s;
}
.lang-toggle:hover { background: var(--surface-2); }
.lang-toggle[aria-expanded="true"] { border-color: var(--accent); }
.lang-toggle .lang-chevron { color: var(--text-subtle); transition: transform .2s; }
.lang-toggle[aria-expanded="true"] .lang-chevron { transform: rotate(180deg); }

.lang-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    z-index: 40;
    min-width: 190px;
    margin: 0;
    padding: var(--space-1);
    list-style: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    animation: menu-in .15s ease-out;
}
@keyframes menu-in { from { opacity: 0; transform: translateY(-4px); } }
.lang-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--tap);
    padding: 0 var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}
.lang-menu a:hover, .lang-menu a:focus-visible { background: var(--surface-2); outline-offset: -2px; }
.lang-menu a[aria-current="true"] { font-weight: 650; }
.lang-menu a span { flex: 1; }
.lang-menu .lang-check { color: var(--accent); }

/* Variante im Profil: volle Breite, Menü links ausgerichtet */
.lang-dropdown-full .lang-toggle { width: 100%; min-height: var(--tap); padding: 0 var(--space-4); border-radius: var(--radius-sm); font-size: var(--fs-base); font-weight: 500; }
.lang-dropdown-full .lang-toggle-label { flex: 1; text-align: left; }
.lang-dropdown-full .lang-menu { left: 0; right: auto; width: 100%; }

/* Variante auf Login/Registrierung: mittig unter dem Formular */
.auth-lang { display: flex; justify-content: center; margin-top: var(--space-4); }
.lang-dropdown-auth .lang-toggle { border-color: transparent; background: transparent; color: var(--text-muted); font-weight: 500; }
.lang-dropdown-auth .lang-toggle:hover, .lang-dropdown-auth .lang-toggle[aria-expanded="true"] { background: var(--surface); border-color: var(--border); color: var(--text); }
.lang-dropdown-auth .lang-menu { left: 0; right: auto; }

.forgot-link { justify-self: end; text-decoration: none; font-weight: 550; color: var(--accent); padding: 6px 0; }
.forgot-link:hover { text-decoration: underline; }