:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --bg-dark: #1e1e2e;
    --bg-card: #2d2d3d;
    --bg-input: #3d3d4d;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --success: #4caf50;
    --warning: #ff9800;
    --danger: #f44336;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

.dashboard {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-card);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon { font-size: 2rem; }
.logo h1 { font-size: 1.5rem; font-weight: 600; }

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.online {
    background: var(--success);
    color: white;
}

.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 200px;
    background: var(--bg-card);
    padding: 1rem 0;
    border-right: 1px solid rgba(255,255,255,0.1);
}

.nav-menu { display: flex; flex-direction: column; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
    background: rgba(26, 115, 232, 0.2);
    color: var(--primary);
}

.content {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.section { display: none; height: 100%; }
.section.active { display: flex; flex-direction: column; }

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-input);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.chat-header h2 { font-size: 1.1rem; }
.chat-status { color: var(--text-secondary); font-size: 0.85rem; }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    display: flex;
    gap: 1rem;
    max-width: 80%;
}

.message.user { align-self: flex-end; flex-direction: row-reverse; }
.message.nimbus { align-self: flex-start; }

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.message.user .message-avatar { background: var(--primary); }

.message-content {
    background: var(--bg-input);
    padding: 0.75rem 1rem;
    border-radius: 12px;
}

.message.user .message-content { background: var(--primary); }

.message-content strong { display: block; margin-bottom: 0.25rem; font-size: 0.85rem; }
.message-content p { line-height: 1.5; }
.message-content .hint { color: var(--text-secondary); font-size: 0.8rem; margin-top: 0.5rem; }

.chat-input-container {
    display: flex;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--bg-input);
}

#chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px;
    background: var(--bg-dark);
    color: var(--text-primary);
    font-size: 1rem;
}

#chat-input:focus { outline: 2px solid var(--primary); }

.btn-send {
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-send:hover { background: var(--primary-dark); }

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding: 1rem 0;
}

.item-card {
    background: var(--bg-card);
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}

.item-card h3 { margin-bottom: 0.5rem; }
.item-card p { color: var(--text-secondary); font-size: 0.9rem; }

.logs-container {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem;
    font-family: 'Consolas', monospace;
    font-size: 0.85rem;
    max-height: 500px;
    overflow-y: auto;
}

.log-entry { padding: 0.5rem; border-bottom: 1px solid rgba(255,255,255,0.05); }
.log-entry:last-child { border-bottom: none; }