/* Left Panel - Slate 기반 깔끔한 사이드바 */
.left-panel {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--left-width);
    height: 100vh;
    background: var(--left-bg);
    border-right: 1px solid var(--left-border);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    z-index: 20;
    transform: translateX(-100%);
    transition: transform var(--transition);
}

.left-panel.active {
    transform: translateX(0);
}

/* 데스크톱에서 항상 표시 - 767px 기준 */
@media (min-width: 768px) {
    .left-panel {
        transform: translateX(0);
    }
}

/* Left Header - 구분선 제거 */
.left-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
    height: 3rem;
}

/* 로고 폰트 크기 조정 - 중앙 패널과 동일하게 */
.logo-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.025em;
}

.logo-text:hover {
    text-decoration: none;
    color: var(--color-text);
}

/* Navigation */
.menu-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.375rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition);
}

.nav-item:hover {
    background: var(--left-hover);
    color: var(--color-text);
    text-decoration: none;
}

/* Active 상태 - Slate 기반 (파란색 X) */
.nav-item.active {
    background: var(--slate-800);
    color: white;
}

.nav-item.active:hover {
    background: var(--slate-700);
}

.nav-item svg {
    flex-shrink: 0;
    width: 1.125rem;
    height: 1.125rem;
}

/* 아이콘 색상 */
.nav-item svg {
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.nav-item:hover svg {
    color: var(--color-text);
}

.nav-item.active svg {
    color: white;
}

/* User Section - 구분선 제거 */
.user-section {
    padding-top: 1rem;
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 0.375rem;
    margin-bottom: 0.5rem;
}

/* User Avatar - Slate 색상 */
.user-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--slate-600);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    flex-shrink: 0;
}

.user-detail {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* User Info Link */
.user-info-link {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: 0.375rem;
    transition: background var(--transition);
}

.user-info-link:hover {
    background: var(--left-hover);
    text-decoration: none;
}

.user-info-link .user-info {
    margin-bottom: 0;
}

/* Menu Section Divider */
.menu-section {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--left-border);
}

.menu-section-title {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 0.75rem;
}

/* Logout Button */
.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.625rem 0.75rem;
    border-radius: 0.375rem;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-align: left;
}

.logout-btn:hover {
    background: var(--left-hover);
    color: var(--color-text);
}

.logout-btn svg {
    flex-shrink: 0;
    width: 1.125rem;
    height: 1.125rem;
}