:root {
    --color-primary: #2c5f7c;
    --color-primary-dark: #1e4456;
    --color-accent: #5b9279;
    --color-accent-warm: #b8843f;
    --color-accent-cool: #6b6f9e;
    --color-bg: #f4f6f5;
    --color-surface: #ffffff;
    --color-text: #2b2e30;
    --color-text-muted: #6b7177;
    --color-border: #dde2e0;
    --color-danger: #b0413e;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Karla", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

header.site-header {
    background: radial-gradient(circle at 15% 25%, #3a7a9c 0%, var(--color-primary) 45%, var(--color-primary-dark) 100%);
    color: #fff;
    padding: 1.4rem 1.5rem;
    box-shadow: var(--shadow);
}

header.site-header h1 {
    margin: 0;
    font-family: "Spectral", Georgia, serif;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 0.01em;
}

.site-subtitle {
    margin: 0.1rem 0 0;
    font-size: 0.85rem;
    line-height: 1.2;
    color: #d6e4ea;
    font-weight: 400;
}

header.site-header a {
    color: #fff;
    text-decoration: none;
}

nav.main-nav {
    display: flex;
    gap: 0.3rem;
    background: var(--color-primary-dark);
    padding: 0 0.5rem;
    overflow-x: auto;
}

nav.main-nav a {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: #e8eef0;
    text-decoration: none;
    padding: 0.8rem 0.9rem;
    font-size: 0.95rem;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.nav-icon {
    font-size: 1.1rem;
    line-height: 1;
}

nav.main-nav a:hover {
    background: rgba(255, 255, 255, 0.08);
}

nav.main-nav a.active {
    border-bottom-color: var(--color-accent);
    font-weight: 600;
}

.nav-logout {
    margin-left: auto;
    color: #f0d4d2 !important;
}

.nav-logout:hover {
    background: rgba(176, 65, 62, 0.25) !important;
}

@media (max-width: 480px) {
    nav.main-nav {
        justify-content: space-between;
    }
    nav.main-nav a {
        flex: 1;
        justify-content: center;
        padding: 0.8rem 0.4rem;
    }
    .nav-label {
        display: none;
    }
    .nav-icon {
        font-size: 1.3rem;
    }
    .nav-logout {
        margin-left: 0;
    }
}

main.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 2rem 1.5rem 5rem;
}

.site-footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-primary-dark);
    color: #cdd8dc;
    max-width: none;
    margin: 0;
    padding: 0.7rem 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: 0.78rem;
    box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.12);
    z-index: 500;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    margin-top: 0;
    font-family: "Spectral", Georgia, serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.schritt-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.92rem;
}

.form-group .hint {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.zeichen-zaehler {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.3rem;
    text-align: right;
}

.zeichen-zaehler.ist-warnung {
    color: var(--color-accent-warm);
    font-weight: 600;
}

.zeichen-zaehler.ist-kritisch {
    color: var(--color-danger);
    font-weight: 700;
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    background: #fff;
    color: var(--color-text);
}

textarea {
    height: 90px;
    overflow-y: auto;
    resize: none;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.15);
}

.btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 0.65rem 1.3rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    background: var(--color-primary-dark);
}

.btn.secondary {
    background: var(--color-accent);
}

.btn.danger {
    background: var(--color-danger);
}

.btn-row {
    display: flex;
    gap: 0.6rem;
    margin-top: 1rem;
}

.btn-nowrap {
    white-space: nowrap;
    flex-shrink: 0;
}

.choice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 600px) {
    .choice-grid {
        grid-template-columns: 1fr;
    }
}

.choice-card {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    font-weight: 600;
}

.choice-card:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

table.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

table.admin-table th,
table.admin-table td {
    text-align: left;
    padding: 0.6rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.92rem;
}

table.admin-table th:last-child,
table.admin-table td:last-child {
    text-align: right;
}

table.admin-table th {
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
}

.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert.success {
    background: #e3f1ea;
    color: #2c6b4a;
    border: 1px solid #b9dcc8;
}

.alert.error {
    background: #f7e6e5;
    color: var(--color-danger);
    border: 1px solid #e3bcba;
}

.inline-form {
    display: block;
}

.inline-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.92rem;
}

.inline-form-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.inline-form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.stacked-form {
    margin-bottom: 0;
}

.stacked-form .form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stacked-form .form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

input[type="date"] {
    font-family: "Karla", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
}

.btn-icon {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    width: 34px;
    height: 34px;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn-icon:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-icon.danger {
    color: var(--color-danger);
}

.btn-icon.danger:hover {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}

.btn-icon:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon:disabled:hover {
    background: #fff;
    color: var(--color-danger);
    border-color: var(--color-border);
}

/* Eigenes Bestätigungs-Modal (statt nativem confirm()-Dialog) */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 30, 28, 0.45);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 1000;
}

.modal-overlay.is-open {
    display: flex;
}

.modal-box {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    padding: 1.5rem 1.75rem;
    max-width: 420px;
    width: 100%;
}

.modal-box h3 {
    margin: 0 0 0.7rem;
    color: var(--color-primary-dark);
    font-size: 1.1rem;
}

.modal-box p {
    margin: 0 0 1.3rem;
    font-size: 0.92rem;
    color: var(--color-text);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.6rem;
}

/* SVG-Icons (statt Emoji) */
.icon {
    width: 1.1em;
    height: 1.1em;
    vertical-align: -0.15em;
    flex-shrink: 0;
}

.nav-icon .icon {
    width: 1.2rem;
    height: 1.2rem;
}

.btn-icon .icon {
    width: 1.1rem;
    height: 1.1rem;
}

.choice-card .icon {
    width: 1.4rem;
    height: 1.4rem;
    vertical-align: -0.25em;
}

.text-muted {
    color: var(--color-text-muted);
    font-size: 0.88rem;
}

/* Rich-Text-Editor */
.editor-toolbar {
    display: flex;
    width: 100%;
    gap: 0.3rem;
    margin-bottom: 0.4rem;
}

.editor-toolbar button {
    flex: 1;
    background: #eef3f1;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    height: 34px;
    font-size: 0.95rem;
    cursor: pointer;
    color: var(--color-primary-dark);
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.editor-toolbar button:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.editor-toolbar button.is-active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.rich-editor {
    width: 100%;
    min-height: 7.5rem; /* ca. 5 Zeilen */
    overflow-y: auto;
    resize: none;
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    background: #f8fafa;
    color: var(--color-text);
}

.rich-editor:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.15);
}

.rich-editor ul,
.rich-editor ol {
    margin: 0.3rem 0 0.3rem 1.2rem;
    padding: 0;
}

/* Auswahl-Buttons (Zeitraum/Fach) */
.button-select-list {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.button-select-list form {
    margin: 0;
}

.btn-select {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.8rem 1.1rem;
    font-size: 0.97rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn-select::after {
    content: '';
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
    margin-left: 0.8rem;
    background-color: currentColor;
    opacity: 0.55;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 6l6 6-6 6'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 6l6 6-6 6'/%3E%3C/svg%3E");
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.btn-select:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.btn-select:hover::after {
    opacity: 0.9;
}

.btn-select.is-disabled::after,
.btn-select.is-filled::after {
    display: none;
}

.btn-select.is-disabled {
    background: #f0f1f1;
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.btn-select.is-disabled:hover {
    background: #f0f1f1;
    border-color: var(--color-border);
    color: var(--color-text-muted);
}

.btn-select.is-filled {
    background: #f3f6f5;
    cursor: default;
}

.btn-select.is-filled:hover {
    background: #f3f6f5;
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn-select.is-filled .btn-icon {
    background: #fff;
}

.btn-select-label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    flex: 1;
}

.btn-select-label .badge {
    align-self: flex-start;
}

.btn-select .badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--color-border);
    color: var(--color-text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
}

/* Aufgaben-Verwaltung: aufklappbare Zeiträume mit Aufgaben-Zeilen */
.aufgaben-gruppe {
    margin-bottom: 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.aufgaben-gruppe-titel {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    background: #f3f6f5;
    color: var(--color-primary-dark);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    list-style: none;
}

.aufgaben-gruppe-titel-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.aufgaben-gruppe-zeitraum {
    color: var(--color-primary-dark);
}

.aufgaben-gruppe-anzahl {
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.aufgaben-gruppe-titel::-webkit-details-marker {
    display: none;
}

.aufgaben-gruppe-titel::before {
    content: '▸';
    display: inline-block;
    margin-right: 0.3rem;
    margin-top: 0.1rem;
    transition: transform 0.15s;
    color: var(--color-primary);
}

.aufgaben-gruppe[open] > .aufgaben-gruppe-titel::before {
    transform: rotate(90deg);
}

.aufgaben-gruppe[open] > .aufgaben-gruppe-titel {
    border-bottom: 1px solid var(--color-border);
}

.aufgaben-zeile {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--color-border);
}

.aufgaben-zeile:last-child {
    border-bottom: none;
}

.aufgaben-zeile-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.aufgaben-fach {
    font-weight: 600;
}

.aufgaben-kennung {
    font-family: "Segoe UI", system-ui, monospace;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
}

.aufgaben-zeile-aktionen {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

/* Verwaltungs-Kacheln (Zeiträume / Fächer / Aufgaben / Zeitrahmen) */
.admin-kachel-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.admin-kachel-grid form {
    margin: 0;
    display: flex;
}

@media (max-width: 600px) {
    .admin-kachel-grid {
        grid-template-columns: 1fr;
    }
}

.admin-kachel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    font-weight: 600;
    font-size: 0.97rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.admin-kachel .icon {
    width: 2rem;
    height: 2rem;
    color: var(--color-primary);
    transition: color 0.15s;
}

.admin-kachel:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.admin-kachel:hover .icon {
    color: #fff;
}

.mitteilung-card {
    border-left: 4px solid var(--color-accent-warm);
}

.mitteilung-card h2 {
    color: var(--color-accent-warm);
}

.mitteilung-text ul,
.mitteilung-text ol {
    margin: 0.3rem 0 0.3rem 1.2rem;
    padding: 0;
}

.mitteilung-meta {
    margin: 0.8rem 0 0;
    padding-top: 0.6rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.wartung-card {
    text-align: center;
    max-width: 480px;
    margin: 2rem auto;
}

.wartung-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.wartung-icon .icon {
    width: 4.5rem;
    height: 4.5rem;
    color: #d2562a;
}

.wartung-card h2 {
    color: #d2562a;
}

.wartungsmodus-card {
    border-left: 4px solid var(--color-border);
}

.wartungsmodus-card.is-aktiv {
    border-left-color: var(--color-danger);
}

.wartungsmodus-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    font-weight: 600;
}

.wartungsmodus-toggle input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
    accent-color: var(--color-danger);
}

/* Aufgaben-Vorschau (Web-Ansicht vor dem PDF-Download) */
.aufgaben-vorschau-block {
    padding: 0;
    overflow: hidden;
}

.vorschau-fachkopf {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    background: #ededed;
    padding: 1rem;
}

.vorschau-fachname {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
}

.vorschau-zeitrahmen {
    text-align: right;
    font-size: 0.82rem;
    color: var(--color-text);
    white-space: nowrap;
}

.vorschau-abschnitt {
    padding: 1rem;
}

.vorschau-abschnitt h4,
.vorschau-spalte h4 {
    margin: 0 0 0.4rem;
    font-size: 0.95rem;
    color: var(--color-text);
}

.vorschau-inhalt {
    font-size: 0.92rem;
    line-height: 1.15;
}

.vorschau-inhalt div,
.vorschau-inhalt p {
    margin: 0;
}

.vorschau-inhalt ul,
.vorschau-inhalt ol {
    margin: 0;
    padding: 0 0 0 1.1rem;
    list-style-position: outside;
}

.vorschau-inhalt li {
    line-height: 1.15;
    margin: 0;
}

.vorschau-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--color-primary);
    text-decoration: underline;
    word-break: break-all;
}

.vorschau-link:hover {
    color: var(--color-primary-dark);
}

.vorschau-link-icon {
    width: 0.95em;
    height: 0.95em;
    flex-shrink: 0;
}

.vorschau-spalten {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 0 1rem 1rem;
}

@media (max-width: 600px) {
    .vorschau-spalten {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    .vorschau-fachkopf {
        flex-direction: column;
        gap: 0.4rem;
    }
    .vorschau-zeitrahmen {
        text-align: left;
    }
}

/* Zeitraum-Auswahl: Kategorien "Aktuell" / "Vergangen" */
.zeitraum-kategorie {
    margin: 1.2rem 0 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text-muted);
}

.zeitraum-kategorie:first-of-type {
    margin-top: 0;
}

.btn-select.is-vergangen {
    background: #f7f8f7;
    color: var(--color-text-muted);
    font-weight: 500;
}

.btn-select.is-vergangen:hover {
    background: var(--color-text-muted);
    border-color: var(--color-text-muted);
    color: #fff;
}

/* Papierstapel-Icon zur Darstellung der Aufgabenanzahl */
.papierstapel-icon {
    width: 2.6rem;
    height: 2.6rem;
    flex-shrink: 0;
    color: var(--color-primary);
}

.papierstapel-blatt-hinten,
.papierstapel-blatt-mitte,
.papierstapel-blatt-vorne {
    fill: #fff;
    transition: fill 0.15s;
}

.papierstapel-zahl {
    fill: currentColor;
    transition: fill 0.15s;
}

.btn-select-mit-icon {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.9rem;
}

.btn-select-mit-icon:hover .papierstapel-icon {
    color: #fff;
}

.btn-select-mit-icon:hover .papierstapel-blatt-hinten,
.btn-select-mit-icon:hover .papierstapel-blatt-mitte,
.btn-select-mit-icon:hover .papierstapel-blatt-vorne {
    fill: var(--color-primary);
}

.btn-select-mit-icon.is-vergangen:hover .papierstapel-blatt-hinten,
.btn-select-mit-icon.is-vergangen:hover .papierstapel-blatt-mitte,
.btn-select-mit-icon.is-vergangen:hover .papierstapel-blatt-vorne {
    fill: var(--color-text-muted);
}

/* Admin: schlanker Logout-Link am Seitenanfang */
.admin-logout-link {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-decoration: none;
}

.admin-logout-link:hover {
    color: var(--color-danger);
}

.admin-logout-link .icon {
    width: 1rem;
    height: 1rem;
}

/* Hilfeseite */
.hilfe-abschnitt {
    padding: 0;
    overflow: hidden;
}

.hilfe-abschnitt summary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    font-family: "Spectral", Georgia, serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    cursor: pointer;
    list-style: none;
}

.hilfe-abschnitt summary::-webkit-details-marker {
    display: none;
}

.hilfe-abschnitt summary::before {
    content: '▸';
    display: inline-block;
    font-family: system-ui, sans-serif;
    font-weight: 400;
    margin-right: 0.2rem;
    transition: transform 0.15s;
    color: var(--color-primary);
}

.hilfe-abschnitt[open] summary::before {
    transform: rotate(90deg);
}

.hilfe-abschnitt[open] summary {
    border-bottom: 1px solid var(--color-border);
}

.hilfe-abschnitt summary:hover {
    background: var(--color-bg);
}

.hilfe-abschnitt summary .icon {
    width: 1.2rem;
    height: 1.2rem;
    color: var(--color-primary);
}

.hilfe-inhalt {
    padding: 1rem 1.25rem;
}

.hilfe-inhalt p {
    margin: 0 0 0.7rem;
}

.hilfe-inhalt p:last-child {
    margin-bottom: 0;
}

.hilfe-schritte,
.hilfe-liste {
    margin: 0;
    padding-left: 1.3rem;
}

.hilfe-schritte li,
.hilfe-liste li {
    margin-bottom: 0.6rem;
    line-height: 1.55;
}

.hilfe-schritte li:last-child,
.hilfe-liste li:last-child {
    margin-bottom: 0;
}

.klassenstufe-wechseln-link:link,
.klassenstufe-wechseln-link:visited {
    color: var(--color-primary);
}

.klassenstufe-wechseln-link:hover {
    color: var(--color-primary-dark);
}

/* Eigenes Kalender-Widget (ersetzt die Optik des nativen Datumspickers) */
.datumsfeld {
    position: relative;
}

.datumsfeld input[type="text"] {
    cursor: pointer;
    background: #fff;
}

.kalender-popup {
    display: none;
    position: absolute;
    z-index: 1000;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
    padding: 0.9rem;
    width: 280px;
    font-family: "Karla", "Segoe UI", system-ui, sans-serif;
}

/* Auf schmalen Bildschirmen (Mobil) wird das Popup unabhängig von der
   Feldposition in der Bildschirmmitte zentriert angezeigt, statt am Feld
   auszurichten – das vermeidet jedes Risiko, dass es über den Bildschirmrand
   hinausragt. */
.kalender-popup.ist-zentriert {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%);
    width: calc(100vw - 2.5rem);
    max-width: 320px;
}

.kalender-popup.ist-offen {
    display: block;
}

.kalender-kopf {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.7rem;
}

.kalender-titel {
    font-weight: 700;
    color: var(--color-primary-dark);
    font-family: "Spectral", Georgia, serif;
}

.kalender-nav {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    width: 1.8rem;
    height: 1.8rem;
    font-size: 1.1rem;
    line-height: 1;
    color: var(--color-primary);
    cursor: pointer;
}

.kalender-nav:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.kalender-wochentage,
.kalender-tage {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.kalender-wochentage span {
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 600;
    padding-bottom: 0.3rem;
}

.kalender-tag {
    background: none;
    border: none;
    border-radius: 6px;
    padding: 0.4rem 0;
    font-size: 0.85rem;
    color: var(--color-text);
    cursor: pointer;
    text-align: center;
}

.kalender-tag:hover {
    background: var(--color-bg);
}

.kalender-tag.ist-leer {
    cursor: default;
}

.kalender-tag.ist-heute {
    font-weight: 700;
    color: var(--color-primary);
}

.kalender-tag.ist-ausgewaehlt {
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
}

.kalender-tag.ist-ausgewaehlt:hover {
    background: var(--color-primary-dark);
}

/* Kompakte Auswahl-Kacheln (Zeitraum/Fach beim Eintragen) – flexibles Grid,
   gleiches Design wie die Admin-Kacheln, aber kleiner und ohne Icon. */
.eintrag-kachel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.7rem;
}

.eintrag-kachel-grid form {
    margin: 0;
    display: flex;
}

.eintrag-kachel {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    width: 100%;
    min-height: 4.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.8rem 0.7rem;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.eintrag-kachel:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.eintrag-kachel.ist-vergangen {
    background: #f7f8f7;
    color: var(--color-text-muted);
    font-weight: 500;
}

.eintrag-kachel.ist-vergangen:hover {
    background: var(--color-text-muted);
    border-color: var(--color-text-muted);
    color: #fff;
}

.eintrag-kachel-belegt {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    min-height: 4.5rem;
    background: #f3f6f5;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.8rem 0.7rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.eintrag-kachel-belegt .eintrag-kachel-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.eintrag-kachel-belegt .badge {
    font-size: 0.68rem;
}

.eintrag-kachel-belegt .btn-icon {
    width: 1.8rem;
    height: 1.8rem;
}

@media (max-width: 480px) {
    .eintrag-kachel-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

.datumsfeld-mit-leeren {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.datumsfeld-mit-leeren .datumsfeld {
    flex: 1;
}

.datumsfeld-mit-leeren .btn {
    flex-shrink: 0;
    padding: 0.6rem 0.9rem;
    font-size: 0.85rem;
}