/* === RESET & VARIABLES === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --border: #2a2a3a;
    --text: #e0e0e0;
    --text-muted: #888;
    --accent: #7c8aff;
    --card-width: 176px;
    --card-img-height: 176px;
}

html, body { height: 100%; overflow: hidden; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: #444; }

/* === APP LAYOUT === */
.app { display: flex; flex-direction: column; height: 100vh; }

/* === TOPBAR === */
.topbar {
    height: 50px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-center { flex: 1; display: flex; justify-content: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.logo { font-weight: 700; font-size: 1.2em; color: var(--accent); letter-spacing: 1px; }

/* === BUTTONS === */
.btn {
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 500;
    transition: all 0.15s ease;
}
.btn:hover { border-color: var(--accent); color: var(--text); }
.btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 0.75em; }

.search-input {
    width: 300px;
    padding: 9px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9em;
}
.search-input:focus { outline: none; border-color: var(--accent); }
.search-input::placeholder { color: var(--text-muted); }

.base-buttons { display: flex; gap: 2px; background: var(--bg-card); border-radius: 6px; padding: 3px; }
.base-btn {
    padding: 6px 14px;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 600;
    transition: all 0.15s ease;
}
.base-btn:hover { color: var(--text); }
.base-btn.active { background: var(--accent); color: #fff; }

/* === VIEW BAR === */
.view-bar {
    height: 40px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}
.view-bar-spacer { width: 120px; }

/* === SEL/GET GROUP === */
.sel-group {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-card);
    border-radius: 6px;
    padding: 3px;
}
.sel-btn {
    padding: 5px 12px;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75em;
    font-weight: 600;
    transition: all 0.15s ease;
}
.sel-btn:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.sel-btn.active { background: var(--accent); color: #fff; }
#sel-count {
    font-size: 0.7em;
    color: var(--accent);
    margin-left: 6px;
    font-weight: 600;
}

/* === GROUPS BAR === */
.groups-bar {
    height: 44px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 8px;
    overflow-x: auto;
}
.group-btn {
    padding: 6px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75em;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
    transition: all 0.15s ease;
}
.group-btn:hover { border-color: var(--accent); color: var(--text); }
.group-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* === MAIN LAYOUT === */
.main-layout { display: flex; flex: 1; overflow: hidden; }

/* === LEFT PANEL === */
.left-panel {
    width: 84px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 10px 6px;
    flex-shrink: 0;
}
.lib-icon {
    width: 68px;
    height: 68px;
    margin: 6px auto;
    border-radius: 10px;
    background: var(--bg-card);
    border: 2px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    transition: all 0.15s ease;
    overflow: hidden;
}
.lib-icon:hover { border-color: var(--accent); }
.lib-icon.active { border-color: var(--accent); background: rgba(124, 138, 255, 0.15); }
.lib-icon img { width: 42px; height: 42px; object-fit: cover; border-radius: 6px; }
.lib-icon span {
    font-size: 0.6em;
    color: var(--text-muted);
    margin-top: 4px;
    text-align: center;
    max-width: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* === CENTER PANEL === */
.center-panel { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* === VIEW TABS === */
.view-tabs { display: flex; gap: 6px; }
.view-tab {
    padding: 7px 20px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85em;
    font-weight: 500;
    transition: all 0.15s ease;
}
.view-tab:hover { color: var(--text); background: var(--bg-card); }
.view-tab.active { background: var(--accent); color: #fff; }

/* === CONTENT AREA === */
.content-area { flex: 1; overflow: hidden; position: relative; }

/* === GRID VIEW === */
.grid-view {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 16px;
    padding: 20px;
    overflow-y: auto;
    height: 100%;
}

.card {
    width: var(--card-width);
    flex-shrink: 0;
    flex-grow: 0;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    position: relative;
}
.card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.card.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 138, 255, 0.4);
}

.card-checkbox {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: rgba(0,0,0,0.7);
    border: 2px solid var(--border);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5;
    transition: all 0.15s ease;
}
.card-checkbox.visible { display: flex; }
.card-checkbox.checked { background: var(--accent); border-color: var(--accent); }
.card-checkbox.checked::after { content: "\2713"; color: #fff; font-size: 14px; font-weight: bold; }

.card-image {
    width: var(--card-width);
    height: var(--card-img-height);
    background: linear-gradient(145deg, #1a1a24 0%, #0a0a0f 100%);
    position: relative;
    overflow: hidden;
}

.card-placeholder {
    width: var(--card-width);
    height: var(--card-img-height);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5em;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.5;
    text-transform: uppercase;
    background: linear-gradient(145deg, #1a1a24 0%, #0a0a0f 100%);
}

.card-img {
    width: var(--card-width);
    height: var(--card-img-height);
    object-fit: cover;
}

.card-body { padding: 12px; }
.card-ref {
    font-size: 0.75em;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.card-name {
    font-size: 0.85em;
    color: var(--text);
    margin-top: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.3;
}

/* === TREE VIEW === */
.tree-view {
    padding: 20px;
    overflow-y: auto;
    height: 100%;
}
.tree-group { margin-bottom: 12px; }
.tree-header {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 8px;
    background: var(--bg-card);
    transition: background 0.15s ease;
}
.tree-header:hover { background: var(--bg-secondary); }
.tree-toggle {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1em;
    font-weight: bold;
    flex-shrink: 0;
}
.tree-group-name { flex: 1; font-weight: 500; }
.tree-count {
    font-size: 0.75em;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 4px 10px;
    border-radius: 12px;
}
.tree-items { display: none; margin-left: 28px; margin-top: 4px; }
.tree-items.expanded { display: block; }
.tree-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 6px;
    margin: 3px 0;
    gap: 10px;
    transition: background 0.15s ease;
}
.tree-item:hover { background: var(--bg-card); }
.tree-item.selected { background: rgba(124,138,255,0.15); }
.tree-img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-card);
}
.tree-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9em;
    font-weight: 600;
    color: var(--accent);
}
.tree-name { font-size: 0.9em; }

/* === GRAPH VIEW === */
.graph-view {
    width: 100%;
    height: 100%;
    position: relative;
}
.graph-view svg { width: 100%; height: 100%; display: block; background: var(--bg); }
.node { cursor: pointer; }
.node text { fill: var(--text-muted); pointer-events: none; font-size: 11px; }
.node.selected circle { stroke: var(--accent); stroke-width: 4; }
.link { stroke-opacity: 0.5; }

/* === DETAIL PANEL === */
.detail-panel {
    width: 0;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: hidden;
    transition: width 0.3s ease;
    flex-shrink: 0;
}
.detail-panel.open { width: 360px; }

.detail-header {
    position: relative;
    width: 100%;
    height: 220px;
    background: linear-gradient(145deg, var(--bg-card) 0%, var(--bg) 100%);
    overflow: hidden;
}
.detail-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 5em;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.4;
    text-transform: uppercase;
}
.detail-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.detail-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0,0,0,0.7);
    border: none;
    color: #fff;
    cursor: pointer;
    font-size: 20px;
    z-index: 5;
    transition: background 0.15s ease;
}
.detail-close:hover { background: rgba(0,0,0,0.9); }

.detail-body { padding: 20px; }
.detail-ref {
    font-size: 1.2em;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.detail-mrf {
    font-size: 0.7em;
    color: var(--text-muted);
    margin-top: 8px;
    font-family: monospace;
    word-break: break-all;
    cursor: pointer;
    padding: 8px 10px;
    background: var(--bg-card);
    border-radius: 6px;
    transition: color 0.15s ease;
}
.detail-mrf:hover { color: var(--accent); }
.detail-name { font-size: 1.3em; color: var(--text); margin-top: 16px; font-weight: 500; }
.detail-desc { font-size: 0.9em; color: var(--text-muted); margin-top: 12px; line-height: 1.7; }

.detail-section { margin-top: 24px; }
.detail-section h4 {
    font-size: 0.75em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.chip-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-chip {
    padding: 7px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.8em;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}
.tag-chip:hover { border-color: var(--accent); color: var(--text); }

/* === TOAST === */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #fff;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 0.9em;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
    pointer-events: none;
}
.toast.show { opacity: 1; }

/* === MODAL === */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
.modal.open { display: flex; }
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    width: 90%;
    max-width: 620px;
    max-height: 80vh;
    overflow: hidden;
}
.modal-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 { font-size: 1.15em; color: var(--text); font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5em;
    padding: 4px 8px;
}
.modal-close:hover { color: var(--text); }
.modal-body { padding: 22px; overflow-y: auto; max-height: calc(80vh - 65px); }
.api-item { margin-bottom: 18px; }
.api-endpoint {
    font-family: monospace;
    font-size: 0.9em;
    color: var(--accent);
    background: var(--bg-card);
    padding: 12px 14px;
    border-radius: 8px;
}
.api-desc { font-size: 0.85em; color: var(--text-muted); margin-top: 8px; }

/* === EMPTY STATE === */
.empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    gap: 16px;
    padding: 40px;
}

/* === LOADING === */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    gap: 14px;
    font-size: 1em;
}
.loading::after {
    content: "";
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === SELECT === */
select {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-card);
    color: var(--text);
    font-size: 0.8em;
    cursor: pointer;
}
select:focus { outline: none; border-color: var(--accent); }

/* === GRAPH OPTIONS PANEL === */
.graph-options {
    padding: 10px;
    overflow-y: auto;
    width: 180px;
}
.graph-section {
    margin-bottom: 16px;
}
.graph-section-title {
    font-size: 0.7em;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}
.graph-stat {
    display: flex;
    justify-content: space-between;
    font-size: 0.75em;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.graph-stat-value {
    color: var(--text);
    font-weight: 600;
}
.graph-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75em;
    color: var(--text-muted);
    margin-bottom: 6px;
    cursor: pointer;
}
.graph-checkbox:hover { color: var(--text); }
.graph-checkbox input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent);
    cursor: pointer;
}
.graph-checkbox .color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 4px;
}
.graph-slider {
    margin-bottom: 12px;
}
.graph-slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.7em;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.graph-slider-value {
    color: var(--text);
    font-weight: 600;
}
.graph-slider input[type="range"] {
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    -webkit-appearance: none;
    cursor: pointer;
}
.graph-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}
.left-panel.graph-mode {
    width: 180px;
}