:root {
    --primary-color: #4285F4;
    --danger-color: #d9534f;
    --favorite-color: #FFD700;
    --light-gray: #f0f0f0;
    --medium-gray: #ccc;
    --text-color-light: #777;
    --text-color-dark: #333;
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --panel-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    --font-family: sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body, html {
    font-family: var(--font-family);
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#mynetwork {
    width: 100%;
    height: 100%;
    border: 1px solid #e0e0e0;
}

#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2em;
    color: #999;
    z-index: 1;
}

#filter-panel {
    max-width: 420px;
    min-width: 380px;
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 10px 15px;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-md);
    z-index: 10;
    box-shadow: var(--panel-shadow);
    font-size: 14px;
    display: flex;
    flex-direction: column;
    row-gap: 8px;
}

#filter-panel h4 {
    margin-top: 5px;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

.filter-panel__dates {
    display: flex;
    flex-direction: column;
    row-gap: 4px;
}

#filter-panel input[type="text"],
#filter-panel input[type="date"],
#filter-panel select {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    background-color: #fff;
}

.filter-panel__checkbox-group {
    margin-bottom: 8px;
}

.filter-panel__checkbox {
    display: flex;
    align-items: center;
    column-gap: 4px;
}

#chat-counter {
    padding-top: 8px;
    border-top: 1px solid #ddd;
    font-size: 13px;
    color: var(--text-color-dark);
}

#description-panel {
    position: absolute;
    top: 15px;
    right: 15px;
    max-width: 400px;
    min-width: 360px;
    max-height: calc(100% - 30px);
    background-color: #fff;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-md);
    box-shadow: var(--panel-shadow);
    z-index: 20;
    padding: 20px;
    overflow-y: auto;
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out, visibility 0.3s;
}

#description-panel.hidden {
    transform: translateX(110%);
    opacity: 0;
    visibility: hidden;
}

#description-panel h3 {
    margin-top: 0;
    margin-bottom: 5px;
}

#description-panel p {
    white-space: pre-wrap;
    border-top: 1px solid var(--medium-gray);
    border-bottom: 1px solid var(--medium-gray);
    padding: 8px 0;
    font-size: 14px;
}

.description-panel__main {
    display: flex;
    flex-direction: column;
    row-gap: 8px;
}

.desc-header {
    max-width: 92%;
}

#desc-title {
    display: inline;
}

#desc-meta {
    font-size: 12px;
    color: var(--text-color-light);
}

#desc-meta span {
    display: block;
    margin-bottom: 3px;
}

.star-icon {
    font-size: 24px;
    color: var(--medium-gray);
    cursor: pointer;
    transition: color 0.2s, transform 0.2s;
}

.star-icon:hover {
    transform: scale(1.2);
}

.star-icon.is-favorite {
    color: var(--favorite-color);
}

#add-tag-select {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-sm);
    margin-top: 8px;
    background-color: #fff;
}

#source-file-link {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    font-weight: 600;
    color: var(--primary-color);
    background-color: #f1f6fe;
    border: 1px solid #cddcfa;
    border-radius: var(--border-radius-sm);
    transition: all 0.2s ease-in-out;
    font-size: 14px;
}

#source-file-link:hover {
    background-color: var(--primary-color);
    color: #fff;
}

#manage-tags-btn {
    position: absolute;
    bottom: 15px;
    left: 15px;
    z-index: 10;
    padding: 8px 12px;
    cursor: pointer;
    background-color: #fff;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
}

#tag-manager-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.2s ease-in-out, visibility 0.2s ease-in-out;
    opacity: 1;
    visibility: visible;
}

#tag-manager-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.modal-content {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    width: 450px;
    position: relative;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.modal-content h3 {
    margin-top: 0;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
    font-size: 22px;
}

#all-tags-list {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

#new-global-tag-input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
}

#new-global-tag-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

.close-modal-btn, #close-panel-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #aaa;
    transition: color 0.2s;
}

.close-modal-btn:hover, #close-panel-btn:hover {
    color: var(--text-color-dark);
}

#desc-tags-list {
    display: flex;
    flex-direction: row;
    gap: 5px;
    margin: 8px 0;
}

.tag-item {
    background-color: var(--light-gray);
    color: var(--text-color-dark);
    padding: 6px 12px;
    border-radius: var(--border-radius-lg);
    font-size: 14px;
    transition: background-color 0.2s;
}

.tag-item:hover {
    background-color: #e0e0e0;
}

.remove-tag {
    margin-left: 8px;
    cursor: pointer;
    color: #888;
    font-weight: bold;
    font-size: 16px;
    transition: color 0.2s;
}

.remove-tag:hover {
    color: var(--danger-color);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

#refresh-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #ddd;
}

#refresh-data-btn {
    flex-grow: 1;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    background-color: #e8f0fe;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.2s;
}

#refresh-data-btn:hover {
    background-color: #d2e3fc;
}

#refresh-data-btn:disabled {
    cursor: not-allowed;
    background-color: var(--light-gray);
    border-color: var(--medium-gray);
    color: var(--text-color-light);
}

#refresh-spinner {
    font-size: 20px;
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

#notification-bar {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-weight: 500;
    font-size: 14px;
    display: none;
}

#notification-bar.success {
    background-color: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
    display: block;
}

#notification-bar.error {
    background-color: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
    display: block;
}

.hidden {
    display: none !important;
}