/* Janal — Corporate Design der Universität Bayreuth
   Farben, Schriften und Bulletpoints folgen dem CD-Manual (Stand Januar 2016).
   Web-Substitute für Schriften: EB Garamond (statt Minion Pro), Source Sans 3 (statt Myriad Pro). */

:root {
    --ubt-green: #009260;
    --ubt-dark: #48535A;
    --ubt-medium: #7F8990;
    --ubt-light: #EBEBE4;
    --ubt-white: #FFFFFF;
    --ubt-black: #111;

    --ubt-error-bg: #f7e4e4;
    --ubt-error-fg: #8b2f2f;
    --ubt-info-bg: #e4f2ec;
    --ubt-info-fg: #146a4a;

    --serif: "EB Garamond", "Minion Pro", Georgia, serif;
    --sans: "Source Sans 3", "Myriad Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;

    --rule: 2px;        /* Stärke der grünen Trennlinie */
    --container-w: 1080px;
}

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

html, body {
    margin: 0;
    padding: 0;
    background: var(--ubt-white);
    color: var(--ubt-medium);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Typografie ---------- */
h1, h2, h3, h4 {
    font-family: var(--serif);
    color: var(--ubt-dark);
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0 0 0.5em;
    line-height: 1.15;
}
h1 { font-size: 2.3rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.25rem; }

.page-title {
    margin-top: 2rem;
    margin-bottom: 0.25rem;
}
.page-sub {
    font-family: var(--serif);
    font-style: italic;
    color: var(--ubt-medium);
    margin: 0 0 2rem;
    font-size: 1.05rem;
}
.lead {
    font-family: var(--serif);
    font-size: 1.15rem;
    color: var(--ubt-dark);
    margin: 0 0 1.5rem;
}

p { margin: 0 0 1em; }
a { color: var(--ubt-green); text-decoration: none; }
a:hover { text-decoration: underline; }

strong { color: var(--ubt-dark); font-weight: 600; }
em { color: var(--ubt-dark); font-style: italic; }

code {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    background: var(--ubt-light);
    padding: 2px 6px;
    border-radius: 2px;
    font-size: 0.9em;
    color: var(--ubt-dark);
}

hr {
    border: none;
    border-top: 1px solid var(--ubt-light);
    margin: 2rem 0;
}

/* ---------- Bulletpoints (quadratisch nach CD) ---------- */
ul.cd, ol.cd {
    list-style: none;
    padding: 0;
    margin: 0 0 1em;
}
ul.cd li, ol.cd li {
    position: relative;
    padding-left: 1.1em;
    margin-bottom: 0.35em;
}
ul.cd li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 0.5em;
    height: 0.5em;
    background: var(--ubt-green);
}

/* ---------- Header ---------- */
.site-header {
    background: var(--ubt-white);
    padding-top: 1.25rem;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-bottom: 1rem;
}
.main-nav {
    align-self: center;
}
.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--ubt-dark);
    text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
    display: inline-block;
    width: 38px;
    height: 38px;
    border: 1.5px solid var(--ubt-dark);
    position: relative;
    background: var(--ubt-white);
    flex-shrink: 0;
}
/* Nachempfundener Diagonal-Balken (Platzhalter, solange kein logo.* hochgeladen ist) */
.brand-mark::before {
    content: "";
    position: absolute;
    left: -2px; right: -2px; top: -2px; bottom: -2px;
    background: linear-gradient(to bottom right,
        transparent 0, transparent calc(50% - 8px),
        var(--ubt-green) calc(50% - 8px), var(--ubt-green) calc(50% + 8px),
        transparent calc(50% + 8px), transparent 100%);
}
.brand-logo {
    display: block;
    height: 2.1rem;       /* knapp unter der Titelhöhe (~1.7rem × 1.1 Zeile) */
    width: auto;
    max-width: 220px;
    object-fit: contain;
    flex-shrink: 0;
}
.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.brand-title {
    font-family: var(--serif);
    font-size: 1.7rem;
    line-height: 1.1;
    color: var(--ubt-dark);
    letter-spacing: -0.01em;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    font-size: 0.95rem;
    flex-wrap: wrap;
}
.main-nav a {
    color: var(--ubt-dark);
    font-weight: 600;
    position: relative;
    padding: 2px 0;
    transition: color 0.18s ease;
}
.main-nav a:not(.nav-logout)::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: var(--ubt-green);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.24s cubic-bezier(.4,.0,.2,1);
}
.main-nav a:hover { color: var(--ubt-green); text-decoration: none; }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav .nav-user {
    color: var(--ubt-medium);
    font-size: 0.85rem;
    border-left: 1px solid var(--ubt-light);
    padding-left: 1rem;
}
.main-nav .nav-logout {
    color: var(--ubt-medium);
}
.header-rule {
    height: var(--rule);
    background: var(--ubt-green);
}

/* ---------- Main / Footer ---------- */
.main {
    padding-top: 1.5rem;
    padding-bottom: 4rem;
    min-height: 60vh;
}
.site-footer {
    border-top: 1px solid var(--ubt-light);
    padding: 1.5rem 0;
    font-size: 0.85rem;
    color: var(--ubt-medium);
}
.site-footer .container {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ---------- Flash-Messages ---------- */
.flash {
    padding: 0.85rem 1rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--ubt-green);
    background: var(--ubt-light);
    color: var(--ubt-dark);
    font-size: 0.95rem;
    animation: fadeSlideIn 0.35s cubic-bezier(.4,.0,.2,1);
}
@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}
.flash-error {
    background: var(--ubt-error-bg);
    color: var(--ubt-error-fg);
    border-left-color: var(--ubt-error-fg);
}
.flash-info {
    background: var(--ubt-info-bg);
    color: var(--ubt-info-fg);
    border-left-color: var(--ubt-green);
}
.flash-success {
    background: var(--ubt-info-bg);
    color: var(--ubt-info-fg);
    border-left-color: var(--ubt-green);
}

/* ---------- Cards / Boxes ---------- */
.card {
    background: var(--ubt-light);
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.5rem;
}
.card-white {
    background: var(--ubt-white);
    padding: 1.5rem 0;
    margin-bottom: 1.5rem;
}
.card h2, .card h3 {
    margin-top: 0;
}
.card p:last-child { margin-bottom: 0; }

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}
@media (max-width: 780px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- Formulare ---------- */
.form-stack label {
    display: block;
    margin-bottom: 1rem;
}
.form-stack label > span {
    display: block;
    font-weight: 600;
    color: var(--ubt-dark);
    font-size: 0.9rem;
    margin-bottom: 0.35rem;
}
.form-stack label > small {
    display: block;
    color: var(--ubt-medium);
    font-size: 0.85rem;
    margin-top: 0.2rem;
}

input[type=text], input[type=password], input[type=number],
input[type=email], select, textarea {
    width: 100%;
    font-family: var(--sans);
    font-size: 1rem;
    color: var(--ubt-dark);
    background: var(--ubt-white);
    border: 1px solid var(--ubt-medium);
    padding: 0.55rem 0.7rem;
    line-height: 1.4;
    border-radius: 0;
}
textarea {
    min-height: 8rem;
    resize: vertical;
    font-family: var(--sans);
}
textarea.large { min-height: 16rem; }
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--ubt-green);
    box-shadow: 0 0 0 2px rgba(0,146,96,0.18);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

/* ---------- Buttons ---------- */
.btn {
    position: relative;
    overflow: hidden;
    display: inline-block;
    font-family: var(--sans);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.6rem 1.2rem;
    background: var(--ubt-white);
    color: var(--ubt-dark);
    border: 1px solid var(--ubt-dark);
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
    will-change: transform;
    transition:
        background 0.22s cubic-bezier(.4,.0,.2,1),
        color 0.22s cubic-bezier(.4,.0,.2,1),
        border-color 0.22s cubic-bezier(.4,.0,.2,1),
        box-shadow 0.22s cubic-bezier(.4,.0,.2,1),
        transform 0.12s cubic-bezier(.4,.0,.2,1);
}
.btn:hover {
    background: var(--ubt-light);
    color: var(--ubt-dark);
    text-decoration: none;
    box-shadow: 0 2px 10px rgba(72,83,90,0.10);
    transform: translateY(-1px);
}
.btn:active { transform: translateY(0) scale(0.97); transition-duration: 0.08s; }
.btn:focus-visible { outline: 2px solid var(--ubt-green); outline-offset: 2px; }

.btn-primary {
    background: var(--ubt-green);
    color: var(--ubt-white);
    border-color: var(--ubt-green);
}
.btn-primary:hover {
    background: #00a36d;
    color: var(--ubt-white);
    box-shadow: 0 4px 16px rgba(0,146,96,0.28);
}
.btn-danger {
    background: var(--ubt-white);
    color: var(--ubt-error-fg);
    border-color: var(--ubt-error-fg);
}
.btn-danger:hover {
    background: var(--ubt-error-bg);
    color: var(--ubt-error-fg);
    box-shadow: 0 2px 12px rgba(139,47,47,0.18);
}
.btn-link {
    border: none;
    background: transparent;
    color: var(--ubt-green);
    padding: 0;
    cursor: pointer;
    overflow: visible;
}
.btn-link:hover { text-decoration: underline; transform: none; box-shadow: none; }
.btn[disabled], button[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Spezieller „+ hinzufügen"-Button: dezent, zurückhaltend, aber klickbar */
.btn-add {
    background: var(--ubt-white);
    color: var(--ubt-green);
    border: 1px dashed var(--ubt-green);
}
.btn-add:hover {
    background: rgba(0,146,96,0.06);
    color: var(--ubt-green);
    border-style: solid;
}

/* Ripple-Effekt (von app.js dynamisch hinzugefügt) */
.btn .ripple, .btn-remove .ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    background: currentColor;
    opacity: 0.18;
    pointer-events: none;
    animation: ripple 0.55s cubic-bezier(.4,.0,.2,1);
}
@keyframes ripple {
    to { transform: scale(2.4); opacity: 0; }
}

/* ---------- Tabellen ---------- */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}
.table th, .table td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--ubt-light);
    vertical-align: top;
}
.table th {
    color: var(--ubt-dark);
    font-weight: 600;
    font-size: 0.82rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border-bottom: 2px solid var(--ubt-dark);
    background: var(--ubt-white);
}
.table tbody tr:hover { background: var(--ubt-light); }

/* ---------- Badge / Tag ---------- */
.badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ubt-dark);
    background: var(--ubt-light);
    padding: 2px 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.badge-green { background: var(--ubt-green); color: var(--ubt-white); }
.badge-muted { color: var(--ubt-medium); }

/* ---------- Fall-Details, Lösungsbereiche ---------- */
.case-head {
    background: var(--ubt-light);
    padding: 1.75rem 2rem;
    border-top: var(--rule) solid var(--ubt-green);
    margin-bottom: 2rem;
}
.case-head h1 { margin-bottom: 0.25rem; }
.case-head .meta {
    color: var(--ubt-medium);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}
.case-section {
    margin-bottom: 2rem;
}
.case-section h2 {
    font-size: 1.15rem;
    border-bottom: 1px solid var(--ubt-light);
    padding-bottom: 0.4rem;
    margin-bottom: 0.9rem;
}
.case-text {
    color: var(--ubt-dark);
    white-space: pre-wrap;
}

/* Editor: Listen einfügen */
.repeater-group {
    /* Außen-Abstand (Button der vorherigen Gruppe → Überschrift dieser Gruppe):
       Deutlich größer als der Innen-Abstand zwischen Überschrift und eigenem Button. */
    margin-top: 4.5rem;
    padding-top: 0;
    padding-bottom: 0;
    border-top: 0;
}
.repeater-group:first-of-type {
    margin-top: 1rem;
}

.repeater {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 0.9rem;
}
.repeater:empty { margin-bottom: 0.4rem; }

.repeater-item {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
    animation: itemSlideIn 0.28s cubic-bezier(.4,.0,.2,1);
    transform-origin: top center;
}
.repeater-item textarea {
    flex: 1;
    min-height: 3.5rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.repeater-item .btn-remove {
    position: relative;
    overflow: hidden;
    background: transparent;
    border: 1px solid var(--ubt-medium);
    color: var(--ubt-medium);
    padding: 0.3rem 0.6rem;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: var(--sans);
    transition:
        color 0.2s cubic-bezier(.4,.0,.2,1),
        border-color 0.2s cubic-bezier(.4,.0,.2,1),
        background 0.2s cubic-bezier(.4,.0,.2,1),
        transform 0.12s cubic-bezier(.4,.0,.2,1);
}
.repeater-item .btn-remove:hover {
    color: var(--ubt-error-fg);
    border-color: var(--ubt-error-fg);
    background: rgba(139,47,47,0.05);
}
.repeater-item .btn-remove:active { transform: scale(0.96); }

.repeater-item--leaving {
    animation: itemSlideOut 0.2s cubic-bezier(.4,.0,.2,1) forwards;
    pointer-events: none;
}

@keyframes itemSlideIn {
    from { opacity: 0; transform: translateY(-6px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes itemSlideOut {
    from { opacity: 1; transform: translateY(0) scale(1); max-height: 200px; }
    to   { opacity: 0; transform: translateY(-4px) scale(0.98); max-height: 0; }
}

.subsection-title {
    font-family: var(--sans);
    font-weight: 600;
    color: var(--ubt-green);
    font-size: 1rem;
    margin: 0 0 0.75rem;
    text-transform: none;
    letter-spacing: 0.01em;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid rgba(0,146,96,0.2);
}

.hint-box {
    background: var(--ubt-light);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    border-left: 3px solid var(--ubt-green);
}
.hint-box .hint-stage {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ubt-green);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.2rem;
}

.feedback-block {
    background: var(--ubt-white);
    border: 1px solid var(--ubt-light);
    border-left: var(--rule) solid var(--ubt-green);
    padding: 1.25rem 1.5rem;
    margin-top: 1rem;
    white-space: pre-wrap;
    color: var(--ubt-dark);
    line-height: 1.55;
    font-size: 1rem;
}
.feedback-block h3 {
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--ubt-green);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0;
}

/* ---------- Auth-Boxen (Login/Register) ---------- */
.auth-box {
    max-width: 420px;
    margin: 3rem auto 2rem;
    background: var(--ubt-light);
    padding: 2rem 2rem 1.75rem;
}
.auth-box h1 {
    margin-top: 0;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}
.auth-box .sub {
    color: var(--ubt-medium);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}
.auth-links {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.9rem;
    color: var(--ubt-medium);
}

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 1rem; }
.text-muted { color: var(--ubt-medium); }
.text-small { font-size: 0.9rem; }
.text-center { text-align: center; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }

/* Spinner für AI-Requests */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0,146,96,0.2);
    border-top-color: var(--ubt-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
    margin-right: 0.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }