:root {
    --primary-color: #66BB6A;
    --primary-color-dark: #388E3C;
    --system-active-color: #66BB6A;
    --light-gray: #f4f4f9;
    --medium-gray: #ccc;
    --dark-gray: #333;
    --bg-color: #ffffff;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --border-color: #e0e0e0;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color);
    flex-shrink: 0;
}

h1 {
    color: var(--dark-gray);
    font-weight: 600;
    margin: 0;
    font-size: 1.5rem;
}

main {
    flex-grow: 1;
    display: flex;
    position: relative;
    padding: 0;
    overflow: hidden;
}

#network {
    width: 100%;
    height: 100%;
    background-color: var(--light-gray);
    visibility: hidden;
}

#loader-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    z-index: 10;
}

.loader {
    border: 6px solid #e0e0e0;
    border-top: 6px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
   }
    100% {
        transform: rotate(360deg);
   }
}

.hidden {
    display: none;
}

#info-panel {
    width: 350px;
    flex-shrink: 0;
    height: 100%;
    position: absolute;
    right: 0;
    top: 0;
    background-color: var(--bg-color);
    border-left: 1px solid var(--border-color);
    box-shadow: -4px 0 15px rgba(0, 0, 0, 0.05);
    transform: translateX(100%);
    transition: transform 0.4s ease-in-out;
    z-index: 5;
    overflow-y: auto;
    box-sizing: border-box;
}

#info-panel.visible {
    transform: translateX(0);
}

.info-content {
    padding: 2rem;
}

#info-panel .iri-text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    color: #888;
    word-break: break-all;
    margin-bottom: 1.5rem;
    display: block;
    text-decoration: none;
    transition: color 0.2s ease;
}

#info-panel .iri-text:hover {
    color: var(--primary-color-dark);
    text-decoration: underline;
}

#info-panel h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--dark-gray);
    font-weight: 600;
}

#info-panel .detail-panel {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
    color: #555;
    background-color: #f9f9f9;
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid #eee;
    margin-bottom: 1.5rem;
}

#info-panel .detail-panel a {
    color: var(--primary-color-dark);
    text-decoration: none;
    font-weight: 600;
}

#info-panel .detail-panel a:hover {
    text-decoration: underline;
}

#info-panel .detail-panel strong {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--dark-gray);
    font-size: 1rem;
}

#info-panel .detail-panel p {
    margin: 0.25rem 0;
    line-height: 1.4;
}

.membership-item {
    border-top: 1px solid #e9e9e9;
    padding-top: 0.75rem;
    margin-top: 0.75rem;
}

.membership-item:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

#info-panel p {
    line-height: 1.6;
    color: #555;
    margin-bottom: 1.5rem;
}

#close-panel-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--medium-gray);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

#close-panel-btn:hover {
    color: var(--dark-gray);
}

.attribute-item {
    margin-bottom: 0.75rem;
}

.attribute-item:last-of-type {
    margin-bottom: 0;
}

.attribute-item p {
    margin: 0 0 0.25rem 0;
}

.attribute-item ul {
    list-style-type: none;
    padding-left: 1rem;
    margin: 0;
}

.attribute-item li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.2rem;
}

.attribute-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

#settings-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-gray);
    transition: all 0.2s ease;
}

#settings-btn:hover {
    background-color: #f5f5f5;
    border-color: #ccc;
}

#settings-btn svg {
    color: #666;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 20;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: #fff;
    width: 90%;
    max-width: 400px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}

.modal-overlay:not(.hidden) .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--dark-gray);
}

#close-modal-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #999;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

#close-modal-btn:hover {
    color: var(--dark-gray);
}

.modal-body {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.form-group input[type="date"], .form-group select {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    color: #333;
    background-color: #fff;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.help-text {
    margin-top: 0.4rem;
    font-size: 0.8rem;
    color: #888;
}

.modal-footer {
    padding: 1rem 1.5rem;
    background-color: #f9f9f9;
    border-top: 1px solid var(--border-color);
    text-align: right;
}

#apply-settings-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background-color 0.2s;
}

#apply-settings-btn:hover {
    background-color: var(--primary-color-dark);
}