:root {
    --primary: #2563eb;
    --dark: #1e293b;
    --light: #f8fafc;
    --accent: #0ea5e9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

body {
    background-color: var(--light);
    color: var(--dark);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
}

.navbar {
    background-color: var(--dark) !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.3rem;
}

.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1.5rem;
}

.card-header {
    border-bottom: 2px solid rgba(255, 255, 255, 0.1) !important;
    padding: 1rem;
}

.bg-primary {
    background-color: var(--primary) !important;
}

/* Status badges */
.badge-up-to-date {
    background-color: var(--success);
}

.badge-patch-behind {
    background-color: var(--warning);
}

.badge-minor-behind {
    background-color: var(--warning);
}

.badge-major-behind {
    background-color: var(--danger);
}

/* Container image cards */
.image-card {
    border: none;
    padding: 1rem;
    background-color: white;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.image-card:hover {
    background-color: #fafafa;
    transform: translateX(4px);
    box-shadow: inset -2px 0 0 var(--primary);
}

.image-card[aria-expanded="true"] {
    background-color: #f0f9ff;
}

.container-group .details-row {
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
    padding: 0;
    transition: all 0.2s ease;
}

.container-group:last-child .image-card {
    border-bottom: none;
}

.image-name {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    word-break: break-word;
}

.image-name strong {
    color: var(--dark);
    font-weight: 600;
}

/* Drop Zone Styles */
.hidden {
    display: none;
}

#drop-area {
    border: 2px dashed #ccc;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

#drop-area:hover {
    background-color: #f0f8ff;
    border-color: #0066cc;
}

#drop-area.drag-over {
    background-color: #e6f2ff;
    border-color: #0066cc;
    box-shadow: inset 0 0 10px rgba(0, 102, 204, 0.1);
}

#upload-prompt {
    padding: 40px 20px;
}

#error-message {
    margin: 0;
    text-align: left;
    padding: 12px;
    font-size: 0.95rem;
}

#file-info {
    color: #666;
}

#file-info p {
    margin: 8px 0;
}

.image-name .badge {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.issues-list {
    padding-left: 0;
    list-style: none;
}

.issue-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid var(--danger);
    background-color: #fee2e2;
}

/* Connection status indicator */
#connection-status {
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    font-size: 0.85rem;
}

#connection-status.connected {
    color: var(--success) !important;
}

#connection-status.disconnected {
    color: var(--danger) !important;
}

/* Container group usage list */
.container-group .details-row ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e2e8f0;
}

.container-group .details-row ul li:last-child {
    border-bottom: none;
}

.container-group .details-row .badge {
    font-size: 0.75rem;
    margin-right: 0.5rem;
}

.container-group .details-row code {
    background-color: #f1f5f9;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.85rem;
}