/* Hero-Section */
.hero {
    text-align: center;
    padding: 2rem 1rem;
    margin: 3rem;
    background: white;
    border-radius: 20px;
    border: none;
}

.hero h1 {
    font-size: 50px;
    color: black; /* Überschrift in Schwarz */
}

.hero p {
    margin: 1rem 0 2rem;
    color: #555;
}

/* Buttons */
.primary-btn {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.primary-btn:hover {
    background: #1d4ed8;
}

/* Verschiebung */
.shifted {
    transform: translateY(250px); /* Verschiebe das Element um 250px nach unten */
    transition: transform 0.3s ease; /* Sanfte Animation */
}

/* Content */
.content {
    flex: 1;
}

/* Grid */
.semester-grid {
    display: flex;
    justify-content: space-evenly;
    flex-wrap: wrap;
}

/* Gruppen-Section */
.groups {
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Elemente am oberen Rand ausrichten */
    padding-top: 3rem; /* Abstand von oben, passend zum Login-Fenster */
    min-height: 100vh; /* Volle Höhe des Viewports */
    background: linear-gradient(to bottom, #2a9d8f, #264653); /* Ähnlich wie hero */
    color: black; /* Standardfarbe für Texte in der Section */
    text-align: center;
}

.groups-content {
    background: rgba(255, 255, 255, 0.9); /* Weißer Hintergrund mit Transparenz */
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2); /* Schatten für die Box */
    max-width: 520px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.management-tabs {
    display: flex;
    align-items: flex-end;
    gap: 0;
    padding: 0;
    margin-top: 4px;
    margin-bottom: -1px;
    text-align: left;
    position: relative;
    z-index: 3;
    overflow-x: auto;
}

.management-tab {
    min-width: 148px;
    padding: 12px 18px;
    border: 1px solid #cbd5e1;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    background: #d9e2ec;
    color: #1f2933;
    cursor: pointer;
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
    transform: translateY(0);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.08);
}

.management-tab + .management-tab {
    margin-left: 6px;
}

.management-tab.active {
    background: #ffffff;
    color: #111827;
    font-weight: 700;
    position: relative;
    z-index: 4;
    transform: translateY(0);
    padding-bottom: 13px;
    border-color: #d9e2ec;
}

.management-tab.active::after {
    content: "";
    position: absolute;
    right: -1px;
    bottom: -1px;
    left: -1px;
    height: 2px;
    background: #ffffff;
    z-index: 5;
}

.management-card-stack {
    position: relative;
    text-align: left;
}

.management-card-stack::before {
    content: "";
    position: absolute;
    top: 14px;
    right: -10px;
    bottom: -10px;
    left: 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #edf2f7;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
    z-index: 0;
}

.management-panel {
    position: relative;
    z-index: 1;
    display: none;
    border: 1px solid #d9e2ec;
    border-radius: 0 8px 8px 8px;
    padding: 18px;
    background: #ffffff;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.12);
}

.management-panel.active {
    display: block;
}

.management-tabs:has(.management-tab:nth-child(2).active) + .management-card-stack .management-panel.active {
    border-radius: 8px;
}

.management-tabs:has(.management-tab:nth-child(2).active) .management-tab:nth-child(2)::after {
    left: -1px;
    right: -1px;
}

.management-panel h3 {
    margin-bottom: 16px;
    color: black;
    text-align: center;
}

/* Überschriften in der Gruppen-Section */
.groups-content h2 {
    color: black; /* Überschrift in Schwarz */
    margin-bottom: 20px; /* Abstand unter der Überschrift */
}

/* Labels */
.groups-content label {
    display: block; /* Block-Layout für Labels */
    margin-bottom: 5px; /* Abstand unter dem Label */
    font-weight: bold; /* Optional: Fett für bessere Sichtbarkeit */
    color: black; /* Textfarbe für Labels */
}

/* Dropdown-Menü */
.groups-content select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    color: black; /* Textfarbe im Dropdown */
    margin-bottom: 20px; /* Abstand unter dem Dropdown */
}

/* Eingabefeld */
.groups-content input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    color: black; /* Textfarbe im Eingabefeld */
    margin-bottom: 20px; /* Abstand unter dem Eingabefeld */
}

.form-message {
    min-height: 22px;
    margin-top: 12px;
    color: #1f2933;
    text-align: center;
}

/* Buttons */
.group-buttons {
    display: flex;
    justify-content: space-between; /* Abstand zwischen den Buttons */
    gap: 20px; /* Abstand zwischen den Buttons */
}

.group-cancel-button,
.group-save-button {
    flex: 1; /* Beide Buttons gleich groß machen */
    padding: 10px 0;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

.group-cancel-button {
    background-color: #e63946; /* Rot für Abbrechen */
    color: white;
}

.group-cancel-button:hover {
    background-color: #d62839; /* Dunkleres Rot beim Hover */
}

.group-save-button {
    background-color: #2a9d8f; /* Grün für Speichern */
    color: white;
}

.group-save-button:hover {
    background-color: #21867a; /* Dunkleres Grün beim Hover */
}

@media (max-width: 780px) {
    .groups {
        padding: 1.5rem 1rem;
    }

    .management-tabs {
        padding: 0;
    }

    .management-tab {
        min-width: 0;
        flex: 1;
        padding: 11px 10px;
        font-size: 0.9rem;
    }
}