/* === 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; }

/* === 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; }
.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; }
.sel-count { font-size: 0.7em; margin-left: 4px; opacity: 0.8; }

.search-box {
    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-box:focus { outline: none; border-color: var(--accent); }
.search-box::placeholder { color: var(--text-muted); }

.base-selector { 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; }

/* === 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; height: calc(100vh - 94px); }

/* === 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: 62px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.lib-icon.active span { color: var(--accent); }

/* === CENTER PANEL === */
.center-panel { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

.view-tabs {
    display: flex;
    gap: 6px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.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; }

.view-container { flex: 1; overflow: hidden; position: relative; }