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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    color: #333;
}

.app-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    min-height: 100vh;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

#add-credits {
    background-color: #45a049;
    border: none;
    color: white;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#add-credits:hover {
    background-color: #3d8b40;
}

#credits {
    font-size: 1.1em;
    font-weight: bold;
}

.auction-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.auction-card {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.auction-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.auction-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 10px;
}

.auction-card h3 {
    margin: 0;
    font-size: 1.1em;
    color: #333;
}

.auction-card p {
    margin: 5px 0;
    font-size: 0.9em;
    color: #666;
}

.auction-details {
    padding: 20px;
    text-align: center;
}

.details-content {
    display: flex;
    gap: 20px;
    align-items: center;
}

#auction-image {
    max-width: 50%;
    border-radius: 5px;
}

.auction-info {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bid-count {
    color: #7f8c8d !important;
    font-size: 0.85em !important;
}

#bid-button, #close-details {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 15px;
}

#bid-button:hover, #close-details:hover {
    background-color: #45a049;
}

.time-remaining {
    color: #2ecc71 !important;
    font-weight: bold;
    font-size: 1em !important;
    background-color: #f8f9fa;
    padding: 5px 10px;
    border-radius: 4px;
    display: inline-block;
    margin: 5px auto !important;
}

.auction-ended {
    opacity: 0.8;
    pointer-events: none;
    background-color: #f8f9fa;
}

.auction-ended .time-remaining {
    color: #e74c3c !important;
}

.auction-ended::after {
    content: "Beendet";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
    background-color: rgba(231, 76, 60, 0.9);
    color: white;
    padding: 8px 30px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 1.2em;
    z-index: 1;
}