body {
    background: #f0f4f8;
    color: #1b1b2f;
    font-family: 'Gill Sans', 'Gill Sans MT', 'Calibri', 'Trebuchet MS', sans-serif;
    line-height: 1.6;
    margin-bottom: 1rem;
    padding: 0;
}

/* Navigation Styles */
.navbar {
    background: linear-gradient(90deg, #1b1b2f,  #4a6fa5)
}
.navbar .nav-link {
    color: #fff;
    transition: color 0.3s, background-color 0.3s, border-color 0.3s;
    margin: 0 5px;
    border: 2px solid transparent;
    border-radius: 6px;
}
.navbar .nav-link:hover {
    background-color: rgba(255, 209, 102, 0.7);
    color: #1b1b2f;
    border-color: rgba(255, 209, 102, 0.9);
    padding: 5px 10px;
}

.navbar .nav-link.active {
    background-color: #ffd166;
    color: #1b1b2f;
    font-weight: bold;
    border: 2px solid #ffd166;
    border-radius: 6px;
    padding: 5px 10px;
}

.navbar .nav-link.has-unread-messages {
    background-color: #dc3545;
    color: #ffffff;
    font-weight: bold;
    border: 2px solid #ffd166;
    border-radius: 6px;
    padding: 5px 10px;
}

.navbar .nav-link.has-unread-messages {
    background-color: #dc3545;
    color: #ffffff;
    font-weight: bold;
    border-radius: 6px;
    padding: 5px 10px;
}

.navbar .nav-link.has-unread-messages::after {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-left: 8px;
    border-radius: 50%;
    background: #ffffff;
}

/* Main content styles */
.container-dashboard {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}
/* Cards/Scores styles */
.container > div:not(.modal) {
    background-color:#ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    padding: 25px;
    flex: 1 1 100%;
    transition: transform 0.3s, box-shadow 0.3s;
}  
.container > div:not(.modal):hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Keep Bootstrap modal sizing/layout intact */
#password-modal {
    padding: 0;
    background: transparent;
    box-shadow: none;
    border-radius: 0;
    font-size: 1rem;
}

#password-modal .modal-dialog {
    max-width: 560px;
}

/* Überschriften und Abstände  */
h1, h2, h3, h4, h5, h6 {
    margin-top: 1rem;
    margin-bottom: 20px;
    color: #1b1b2f;
}
p {
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    color: #333;
}
/* Button Styles */
.btn {
    background-color: #4a6fa5;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}
.btn:hover {
    background-color: #2b4a7c;
}
.btn:disabled,
.btn.disabled {
    background-color: #adb5bd;
    color: #495057;
    cursor: not-allowed;
    opacity: 1;
}
.btn-danger {
    background-color: #a84848;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}
.btn-danger:hover {
    background-color: #8a3b3b;
}
#page-wrapper {
    display: flex;
    min-height: 100vh;
    font-family: 'Segoe UI', sans-serif;
}
/* Sidebar Styles */
#sidebar {
    width: 240px;
    min-height: auto;
    background: linear-gradient(180deg, #1b1b2f,  #4a6fa5);
    color: white;
    padding: 25px;
}
#sidebar .nav-link {
    margin: 0.5rem 0;
    transition: color 0.3s, background-color 0.3s, border-color 0.3s;
    color: white;
    padding: 5px 10px;
    border: 2px solid transparent;
    border-radius: 6px;
}
#sidebar .nav-link:hover {
    color: #1b1b2f;
    background-color: rgba(255, 209, 102, 0.7);
    border-color: rgba(255, 209, 102, 0.9);
    border-radius: 6px;
}
#sidebar .nav-link.active {
    color: #1b1b2f;
    font-weight: bold;
    background-color: #ffd166;
    border: 2px solid #ffd166;
    border-radius: 6px;
    padding: 5px 10px;
}
#logo_img {
    max-width: 300px;   
    width: 50%;      
    height: auto;       
}
#main-area {
    flex: 1;
    background: #f3f4f6;
    display: flex;
    flex-direction: column;
}
/* Topbar Styles */
#topbar {
    height: 70px;
    background: white;
    padding: 0px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
#main-content {
    background-color: #f0f4f8;
    padding: 30px;
}
/* Card Styles */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    padding: 25px;
    margin-bottom: 20px;
}
.card h2 {
    margin-bottom: 10px;
}

/* Responsive Styles */
@media (max-width: 768px) {
    body {
        font-size: 0.9rem;
    }
    .container > div:not(.modal) {
        flex: 1 1 calc(50% - 40px);
    }
    #page-wrapper {
        flex-direction: column;
    }
    #sidebar {
        width: 100%;
        display: flex;
        overflow-x: auto;
    }
    #sidebar .nav-link {
        flex: 0 0 auto;
        margin: 0 10px;
    }
}
@media (min-width: 1200px) {
    body {
        font-size: 1.1rem;
    }
    .container > div:not(.modal) {
        flex: 1 1 calc(25% - 40px);
    }
    p.columns{
        column-count: 2;
        column-gap: 2rem;
    }
    #sidebar .nav-link {
        flex: 0 0 auto;
        margin: 0 15px;
    }

}

/* Table styles leaderboard */
.leaderboard-table {
    border-collapse: collapse;
    width: 100%;
    background: #ffffff;
    border-radius: 10px;
    overflow: hidden;
    font-size: 1rem;
}

.leaderboard-table th,
.leaderboard-table td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid #ddd;
    font-size: 16px;
}

.leaderboard-table thead th {
    background: #1b1b2f;
    color: #ffffff;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.leaderboard-table tbody tr {
    transition: background-color 0.2s ease;
}

.leaderboard-table tbody tr:nth-child(even) {
    background-color: #f7f9fc;
}

.leaderboard-table tbody tr:hover {
    background-color: #dbe6f7;
}

.leaderboard-table tbody tr.leaderboard-row-current-user,
.leaderboard-table tbody tr.leaderboard-row-current-user:nth-child(even),
.leaderboard-table tbody tr.leaderboard-row-current-user:hover {
    background-color: #dff3df;
}

.leaderboard-table tbody tr.leaderboard-row-current-user td {
    font-weight: 600;
}

.leaderboard-table tbody tr.leaderboard-row-gap td {
    border-bottom: none;
    padding: 0;
    height: 16px;
    background: transparent;
}

.leaderboard-table tbody tr.leaderboard-row-gap:hover,
.leaderboard-table tbody tr.leaderboard-row-gap:hover td {
    background: transparent;
}

.leaderboard-table tbody tr.leaderboard-row-current-user-extra td {
    border-top: 2px solid #b8dfb8;
}

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


/* Messages */
.container > .messages-card:not(.modal),
.messages-card {
    text-align: left;
    font-size: 1rem;
}

.container > .messages-card:not(.modal):hover,
.messages-card:hover {
    transform: none;
}

.messages-header,
.messages-inbox-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.messages-panel {
    background: #f8f9fa;
    border: 1px solid #dbe3ef;
    border-radius: 8px;
    padding: 18px;
}

.messages-panel h3 {
    font-size: 1.1rem;
    margin: 0 0 14px;
}

.messages-user-list {
    display: grid;
    gap: 10px;
}

.messages-user-button {
    width: 100%;
    border: 1px solid #c9d6e8;
    border-radius: 6px;
    background: #ffffff;
    color: #1b1b2f;
    padding: 10px 12px;
    text-align: left;
    transition: background-color 0.2s, border-color 0.2s;
}

.messages-user-button:hover {
    background: #e8f0fb;
    border-color: #4a6fa5;
}

.message-form textarea {
    resize: vertical;
}

.message-list {
    display: grid;
    gap: 12px;
}

.message-item {
    border-left: 4px solid #4a6fa5;
    border-radius: 8px;
    background: #ffffff;
    padding: 12px 14px;
}

.message-item-unread {
    border-left-color: #dc3545;
    background: #fff4f4;
}

.challenge-message-group {
    border-left-color: #6f7fb7;
}

.challenge-thread {
    display: grid;
    gap: 8px;
    margin-top: 12px;
    border-top: 1px solid #e5e7eb;
    padding-top: 10px;
}

.challenge-thread.d-none {
    display: none;
}

.challenge-thread-toggle {
    border: none;
    background: transparent;
    color: #4a6fa5;
    display: inline-flex;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 10px;
    padding: 0;
}

.challenge-thread-toggle:hover {
    color: #2b4a7c;
    text-decoration: underline;
}

.challenge-thread-item {
    border-radius: 6px;
    background: #f8fafc;
    padding: 8px 10px;
}

.challenge-thread-item span {
    display: block;
    color: #64748b;
    font-size: 0.82rem;
    margin-bottom: 4px;
}

.message-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    color: #1b1b2f;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.message-meta span,
.messages-empty {
    color: #667085;
}

.message-item p,
.messages-empty {
    margin: 0;
}

.challenge-status-button:disabled {
    background-color: #e5e7eb;
    border: 1px solid #cbd5e1;
    color: #64748b;
}

.challenge-result-graphic,
.play-challenge-result {
    margin-top: 12px;
    border-radius: 8px;
    border: 1px solid #dbe3ef;
    background: #ffffff;
    overflow: hidden;
}

.challenge-result-headline,
.play-challenge-result-title {
    padding: 10px 14px;
    font-weight: 700;
    color: #ffffff;
}

.challenge-outcome {
    align-items: center;
    background: #f8fafc;
    display: flex;
    gap: 12px;
    padding: 14px;
}

.challenge-outcome img {
    border-radius: 8px;
    height: 72px;
    object-fit: cover;
    width: 72px;
}

.challenge-outcome strong {
    color: #1b1b2f;
    font-size: 1.5rem;
}

.challenge-outcome-win {
    background: #e8f7ee;
}

.challenge-outcome-loss {
    background: #fdecec;
}

.challenge-outcome-draw {
    background: #eef3fb;
}

.challenge-result-win,
.play-challenge-result-winner .play-challenge-result-title {
    background: #198754;
}

.challenge-result-draw,
.play-challenge-result-draw .play-challenge-result-title {
    background: #4a6fa5;
}

.play-challenge-result-loser .play-challenge-result-title {
    background: #a84848;
}

.challenge-result-scores,
.play-challenge-result-scores {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: #dbe3ef;
}

.challenge-result-score,
.play-challenge-result-score {
    display: grid;
    gap: 4px;
    background: #ffffff;
    padding: 12px;
}

.challenge-result-score span,
.play-challenge-result-score span {
    color: #4a6fa5;
    font-size: 1.25rem;
    font-weight: 700;
}

.challenge-hint {
    display: inline-block;
    margin-top: 8px;
    border-radius: 6px;
    background: #fff4cc;
    color: #1b1b2f;
    padding: 6px 10px;
    font-size: 0.95rem;
    font-weight: 600;
}

@media (max-width: 768px) {
    .messages-header,
    .messages-inbox-title,
    .message-meta {
        align-items: flex-start;
        flex-direction: column;
    }

    .challenge-result-scores,
    .play-challenge-result-scores {
        grid-template-columns: 1fr;
    }
}