/* ── Variablen ─────────────────────────────────────────────────────────── */

:root {
    --color-primary:    #1a2940;
    --color-accent:     #2e6da4;
    --color-accent-h:   #245a8c;
    --color-bg:         #f5f6f8;
    --color-surface:    #ffffff;
    --color-text:       #1a1a2e;
    --color-muted:      #6b7280;
    --color-border:     #dde1e7;
    --color-error-bg:   #fef2f2;
    --color-error:      #b91c1c;
    --color-success-bg: #f0fdf4;
    --color-success:    #166534;

    --font:        system-ui, -apple-system, 'Segoe UI', sans-serif;
    --radius:      6px;
    --shadow:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md:   0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --max-width:   1140px;
    --header-h:    60px;
}

/* ── Reset ─────────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ─────────────────────────────────────────────────────────────── */

.site-container {
    max-width: var(--max-width);
    margin:    0 auto;
    padding:   0 1.5rem;
}

.site-main {
    flex: 1;
    padding: 2.5rem 0 4rem;
}

.site-page-title {
    font-size:     1.75rem;
    font-weight:   700;
    margin-bottom: 1.5rem;
    color:         var(--color-primary);
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.site-header {
    background:  var(--color-primary);
    height:      var(--header-h);
    position:    sticky;
    top:         0;
    z-index:     100;
    box-shadow:  var(--shadow-md);
}

.site-header__inner {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    height:          100%;
}

.site-header__logo {
    color:       #fff;
    font-size:   1.1rem;
    font-weight: 700;
    letter-spacing: .02em;
    text-decoration: none;
}

/* ── Navigation ─────────────────────────────────────────────────────────── */

.site-nav__list {
    display:    flex;
    gap:        .25rem;
    list-style: none;
}

.site-nav__link {
    display:       block;
    padding:       .4rem .85rem;
    border-radius: var(--radius);
    color:         rgba(255,255,255,.8);
    font-size:     .9rem;
    transition:    background .15s, color .15s;
    text-decoration: none;
}

.site-nav__link:hover,
.site-nav__item--active .site-nav__link {
    background: rgba(255,255,255,.12);
    color:      #fff;
    text-decoration: none;
}

.site-nav__link--current {
    background: rgba(255,255,255,.18);
    color:      #fff;
    font-weight: 600;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

.site-footer {
    background:  var(--color-primary);
    padding:     1.25rem 0;
    margin-top:  auto;
}

.site-footer__inner {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
}

.site-footer__copy {
    color:     rgba(255,255,255,.55);
    font-size: .85rem;
}

/* ── Provenance Plugin: Gemeinsam ────────────────────────────────────────── */

.provenance-plugin {
    font-family: var(--font);
}

.provenance-error {
    background:    var(--color-error-bg);
    border:        1px solid #fca5a5;
    border-radius: var(--radius);
    color:         var(--color-error);
    padding:       .85rem 1rem;
    margin-bottom: 1.25rem;
    font-size:     .9rem;
}

.provenance-empty {
    color:      var(--color-muted);
    font-style: italic;
    padding:    1.5rem 0;
}

.provenance-muted {
    color:      var(--color-muted);
    font-style: italic;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */

.provenance-btn {
    display:       inline-flex;
    align-items:   center;
    gap:           .4rem;
    padding:       .5rem 1rem;
    border-radius: var(--radius);
    font-size:     .875rem;
    font-weight:   500;
    cursor:        pointer;
    border:        1px solid transparent;
    text-decoration: none;
    transition:    background .15s, border-color .15s, color .15s;
    line-height:   1;
}

.provenance-btn--primary {
    background: var(--color-accent);
    color:      #fff;
}
.provenance-btn--primary:hover {
    background: var(--color-accent-h);
    color:      #fff;
    text-decoration: none;
}

.provenance-btn--secondary {
    background:   #fff;
    border-color: var(--color-border);
    color:        var(--color-text);
}
.provenance-btn--secondary:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.provenance-btn--small {
    padding:   .3rem .7rem;
    font-size: .8rem;
    background: var(--color-bg);
    border:    1px solid var(--color-border);
    color:     var(--color-text);
}
.provenance-btn--small:hover {
    background: var(--color-border);
    text-decoration: none;
}

.provenance-btn--back {
    background:   transparent;
    border-color: var(--color-border);
    color:        var(--color-muted);
    font-size:    .85rem;
}
.provenance-btn--back:hover {
    color: var(--color-text);
    text-decoration: none;
}

.provenance-btn--danger {
    background: #dc2626;
    color:      #fff;
    border:     none;
}
.provenance-btn--danger:hover {
    background: #b91c1c;
    text-decoration: none;
}

.provenance-detail__actions {
    display:    flex;
    gap:        .75rem;
    align-items: center;
    margin-top: 1.25rem;
}

.provenance-inline-form {
    display: inline;
    margin:  0;
    padding: 0;
}

/* ── Liste ───────────────────────────────────────────────────────────────── */

.provenance-list__header {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    margin-bottom:   1.5rem;
}

.provenance-list__header h2 {
    font-size:   1.4rem;
    font-weight: 700;
    color:       var(--color-primary);
}

.provenance-table {
    width:           100%;
    border-collapse: collapse;
    background:      var(--color-surface);
    border-radius:   var(--radius);
    box-shadow:      var(--shadow);
    overflow:        hidden;
    font-size:       .9rem;
}

.provenance-table thead {
    background: var(--color-primary);
    color:      #fff;
}

.provenance-table th {
    padding:    .75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size:  .8rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.provenance-table td {
    padding:       .7rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.provenance-table tbody tr:last-child td {
    border-bottom: none;
}

.provenance-table tbody tr:hover {
    background: var(--color-bg);
}

/* ── Detail ──────────────────────────────────────────────────────────────── */

.provenance-detail__header {
    display:       flex;
    align-items:   center;
    gap:           1rem;
    margin-bottom: 1.5rem;
}

.provenance-detail__header h2 {
    font-size:   1.4rem;
    font-weight: 700;
    color:       var(--color-primary);
}

.provenance-detail__table {
    width:         100%;
    border-collapse: collapse;
    background:    var(--color-surface);
    border-radius: var(--radius);
    box-shadow:    var(--shadow);
    overflow:      hidden;
    font-size:     .9rem;
}

.provenance-detail__table th {
    width:          220px;
    padding:        .65rem 1rem;
    text-align:     left;
    font-weight:    600;
    color:          var(--color-muted);
    font-size:      .8rem;
    border-bottom:  1px solid var(--color-border);
    background:     var(--color-bg);
    vertical-align: top;
}

.provenance-detail__table td {
    padding:       .65rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.provenance-detail__table tr:last-child th,
.provenance-detail__table tr:last-child td {
    border-bottom: none;
}

.provenance-detail__uri {
    margin-top: 1rem;
    color:      var(--color-muted);
    font-size:  .8rem;
}

.provenance-detail__uri code {
    font-size:     .75rem;
    background:    var(--color-bg);
    padding:       .2rem .4rem;
    border-radius: 3px;
    border:        1px solid var(--color-border);
    word-break:    break-all;
}

/* ── Formular ────────────────────────────────────────────────────────────── */

.provenance-form__header {
    display:       flex;
    align-items:   center;
    gap:           1rem;
    margin-bottom: 1.5rem;
}

.provenance-form__header h2 {
    font-size:   1.4rem;
    font-weight: 700;
    color:       var(--color-primary);
}

.provenance-form__body {
    display:        flex;
    flex-direction: column;
    gap:            1.25rem;
}

.provenance-form__group {
    background:    var(--color-surface);
    border:        1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow:    var(--shadow);
    padding:       1.25rem 1.5rem;
}

.provenance-form__group legend {
    font-size:   .8rem;
    font-weight: 700;
    color:       var(--color-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    padding:     0 .25rem;
    margin-bottom: .75rem;
}

.provenance-form__field {
    display:        flex;
    flex-direction: column;
    gap:            .3rem;
    margin-bottom:  .9rem;
}

.provenance-form__field:last-child {
    margin-bottom: 0;
}

.provenance-form__field label {
    font-size:   .85rem;
    font-weight: 500;
    color:       var(--color-text);
}

.provenance-form__field .required {
    color: var(--color-error);
}

.provenance-form__input,
.provenance-form__textarea,
.provenance-form__select {
    width:         100%;
    padding:       .5rem .75rem;
    border:        1px solid var(--color-border);
    border-radius: var(--radius);
    font-size:     .9rem;
    font-family:   var(--font);
    color:         var(--color-text);
    background:    var(--color-surface);
    transition:    border-color .15s, box-shadow .15s;
    appearance:    none;
}

.provenance-form__input:focus,
.provenance-form__textarea:focus,
.provenance-form__select:focus {
    outline:      none;
    border-color: var(--color-accent);
    box-shadow:   0 0 0 3px rgba(46,109,164,.15);
}

.provenance-form__textarea {
    resize:     vertical;
    min-height: 80px;
}

.provenance-form__select {
    background-image:    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat:   no-repeat;
    background-position: right .75rem center;
    padding-right:       2.25rem;
    cursor:              pointer;
}

.provenance-form__actions {
    display:    flex;
    gap:        .75rem;
    align-items: center;
    padding-top: .5rem;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
    .site-nav { display: none; }

    .provenance-list__header { flex-direction: column; align-items: flex-start; gap: .75rem; }
    .provenance-table th:nth-child(2),
    .provenance-table td:nth-child(2) { display: none; }

    .provenance-detail__table th { width: 120px; }
    .provenance-form__group { padding: 1rem; }
}