.sidebar {
  background: #0d0f1a;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
}
.logo-icon { color: var(--violet); display: flex; }
.logo-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.logo-text {
  font-size: 15px; font-weight: 700;
  background: linear-gradient(135deg, #c0c1ff, #818cf8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -0.3px;
}
.logo-user {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.sidebar-section { padding: 12px 12px 0; }

.sidebar-upload-btn {
  width: 100%;
  justify-content: center;
  padding: 10px;
  font-size: 13px;
}

.sidebar-chips {
  display: flex; gap: 6px; padding: 10px 12px 4px;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding-bottom: 8px;
}

.sidebar-section-header {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px 6px;
  font-size: 11px; font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.8px; text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}
.sidebar-section-header:hover { color: var(--text-muted); }
.sidebar-section-header span:first-of-type { flex: 1; }
.chevron { font-size: 10px; margin-left: auto; }
.pin-count {
  background: var(--primary-glow); color: var(--violet);
  font-size: 10px; padding: 1px 5px; border-radius: 10px;
}

.sidebar-items { padding: 2px 10px 8px; display: flex; flex-direction: column; gap: 4px; }

.sidebar-empty {
  font-size: 12px; color: var(--text-dim);
  padding: 4px 4px 8px; text-align: center; line-height: 1.4;
}

/* Doc cards */
.doc-card {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 8px 10px; border-radius: var(--radius-sm);
  background: var(--surface-low);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.doc-card > svg { flex-shrink: 0; margin-top: 2px; color: var(--primary); }
.doc-info { overflow: hidden; flex: 1; }
.doc-name { font-size: 12px; font-weight: 500; color: var(--text); }
.doc-meta { font-size: 10px; color: var(--text-dim); margin-top: 2px; }

/* Pin cards */
.pin-card {
  background: var(--surface-low);
  border: 1px solid rgba(99,102,241,0.15);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}
.pin-text { font-size: 12px; color: var(--text); line-height: 1.5; }
.pin-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 4px; gap: 6px;
}
.pin-source { font-size: 10px; color: var(--text-dim); flex: 1; }
.pin-remove {
  background: none; border: none; color: var(--text-dim);
  cursor: pointer; font-size: 16px; line-height: 1; padding: 0 2px;
  border-radius: 3px;
}
.pin-remove:hover { color: var(--error); background: var(--error-bg); }

/* Session items */
.session-item {
  padding: 8px 10px; border-radius: var(--radius-sm);
  cursor: pointer; transition: background var(--transition);
}
.session-item:hover { background: var(--surface-mid); }
.session-item.active { background: var(--primary-glow); border: 1px solid rgba(99,102,241,0.25); }
.session-name { font-size: 12px; font-weight: 500; color: var(--text); }
.session-meta { font-size: 10px; color: var(--text-dim); margin-top: 2px; }

/* Footer */
.sidebar-footer {
  display: grid;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}
.btn-full { width: 100%; justify-content: center; }
.btn-sm { font-size: 11px; padding: 5px 10px; }